Best practice to use lib-gwt-imageupload with Spring Boot?

Vaadin 6 / 7 / 8
1

Hello,
As an exercise, I am trying to add image capture + display + upload to my Maven/Vaadin/SpringBoot App using the
lib-gwt-imageupload
 UI Component but, after many failed attempts to plug it in, I have hit a wall.

I have tried to put my head around the
Vaadin Touchkit Parking Ticket Demo
 (which uses lib-gwt-imageupload) but so many things are going on in there that it is overwhelmingly complex from a Vaadin beginner standpoint.
The lib-gwt-imageupload web page unfortunately do not offer any help and the small excerpt on the book (page 682) mentioning it, sends you in a ‘spin’ by forwarding you back to the Touchkit Parking Ticket example. Back to square one lol

Anyway, my latest attempt was to ditch my main app temporarily and try a few tests using a basic and solid base such as the
spring-vaadin-touchkit
 example (which I have set to the standard widgetset solution, as suggested in the source). Unfortunately, adding what I felt was the relevant/needed dependencies in pom.xml (see marks in the listing below):

[code]

<?xml version="1.0" encoding="UTF-8"?>


4.0.0

<groupId>io.spring</groupId>
<artifactId>spring-vaadin-touchkit</artifactId>
<version>0.0.1-SNAPSHOT</version>

<description>Vaadin Spring + Vaadin TouchKit integration example</description>

<properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    <version.vaadin>7.5.9</version.vaadin>
    <vaadin.plugin.version>${version.vaadin}</vaadin.plugin.version>
    <start-class>crud.Application</start-class>
</properties>

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>1.2.5.RELEASE</version>
</parent>

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-actuator</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>com.vaadin</groupId>
        <artifactId>vaadin-spring-boot</artifactId>
        <version>1.0.0</version>
    </dependency>
    <dependency>
        <groupId>com.vaadin</groupId>
        <artifactId>vaadin-server</artifactId>
        <version>${version.vaadin}</version>
        <exclusions>
            <!-- Remove some obsolete stuff not needed by server side Vaadin apps -->
            <exclusion>
                <artifactId>vaadin-theme-compiler</artifactId>
                <groupId>com.vaadin</groupId>
            </exclusion>
        </exclusions>
    </dependency>
    <dependency>
        <groupId>com.vaadin.addon</groupId>
        <artifactId>vaadin-touchkit-agpl</artifactId>
        <version>4.0.3</version>
        <exclusions>
            <!-- For some reason latest touchkit depends on vaadin-themes, which is not needed -->
            <exclusion>
                <groupId>com.vaadin</groupId>
                <artifactId>vaadin-themes</artifactId>
            </exclusion>
        </exclusions>
    </dependency>
    <dependency>
        <groupId>org.vaadin</groupId>
        <artifactId>viritin</artifactId>
        <version>1.37</version>
    </dependency>

    <dependency>
        <groupId>com.vaadin</groupId>
        <artifactId>vaadin-client</artifactId>
        <scope>provided</scope>
        <version>${version.vaadin}</version>
    </dependency>
    <dependency>
        <groupId>com.vaadin</groupId>
        <artifactId>vaadin-client-compiler</artifactId>
        <scope>provided</scope>
        <version>${version.vaadin}</version>
    </dependency>
    <dependency>
        <groupId>commons-io</groupId>
        <artifactId>commons-io</artifactId>
        <version>2.4</version>
    </dependency>
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>servlet-api</artifactId>
        <version>2.5</version>
        <scope>provided</scope>
    </dependency>
    <!-- This is needed for fallback app displayed for non webkit browsers -->
    <dependency>
        <groupId>com.vaadin</groupId>
        <artifactId>vaadin-client-compiled</artifactId>
        <version>${version.vaadin}</version>
    </dependency>
    <dependency>
        <groupId>org.vaadin.juho</groupId>
        <artifactId>lib-gwt-imageupload</artifactId>
        <version>0.0.3</version>
    </dependency>

</dependencies>

<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
        </plugin>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <configuration>
                <source>1.8</source>
                <target>1.8</target>
            </configuration>
        </plugin>

        <!-- If not using cdn.virit.in, remove previous plugin and uncomment this one -->
        <plugin>
            <groupId>com.vaadin</groupId>
            <artifactId>vaadin-maven-plugin</artifactId>
            <version>${vaadin.plugin.version}</version>
            <configuration>
                <extraJvmArgs>-Xmx1024M -Xss1024k</extraJvmArgs>
                <webappDirectory>${basedir}/target/classes/VAADIN/widgetsets</webappDirectory>
                <draftCompile>false</draftCompile>
                <compileReport>false</compileReport>
                <style>OBF</style>
                <strict>true</strict>
                <runTarget>http://localhost:8080/simple</runTarget>
                <module>AppWidgetset</module>
            </configuration>
            <executions>
                <execution>
                    <goals>
                        <goal>update-widgetset</goal>
                        <goal>compile</goal>
                    </goals>
                </execution>
            </executions>
        </plugin>

    </plugins>
    
    <pluginManagement>
        <plugins>
            <!--This plugin's configuration is used to store Eclipse m2e settings only. It has no influence on the Maven build itself.-->
            <plugin>
                <groupId>org.eclipse.m2e</groupId>
                <artifactId>lifecycle-mapping</artifactId>
                <version>1.0.0</version>
                <configuration>
                    <lifecycleMappingMetadata>
                        <pluginExecutions>
                            <pluginExecution>
                                <pluginExecutionFilter>
                                    <groupId>
                                        in.virit.vwscdn
                                    </groupId>
                                    <artifactId>
                                        vwscdn-maven-plugin
                                    </artifactId>
                                    <versionRange>
                                        [1.3.4,)
                                    </versionRange>
                                    <goals>
                                        <goal>generate</goal>
                                    </goals>
                                </pluginExecutionFilter>
                                <action>
                                    <ignore></ignore>
                                </action>
                            </pluginExecution>
                        </pluginExecutions>
                    </lifecycleMappingMetadata>
                </configuration>
            </plugin>
        </plugins>
    </pluginManagement>
</build>

<repositories>
    <repository>
        <id>spring-snapshots</id>
        <name>Spring Snapshots</name>
        <url>http://repo.spring.io/snapshot</url>
        <snapshots>
            <enabled>true</enabled>
        </snapshots>
    </repository>
    <repository>
        <id>spring-milestones</id>
        <name>Spring Milestones</name>
        <url>http://repo.spring.io/milestone</url>
        <snapshots>
            <enabled>false</enabled>
        </snapshots>
    </repository>
    <repository>
        <id>vaadin-snapshots</id>
        <url>http://oss.sonatype.org/content/repositories/vaadin-snapshots/</url>
        <snapshots>
            <enabled>true</enabled>
        </snapshots>
    </repository>
    <repository>
        <id>vaadin-addons</id>
        <url>http://maven.vaadin.com/vaadin-addons</url>
    </repository>

    <repository>
        <id>sonatype-snapshots</id>
        <url>https://oss.sonatype.org/content/repositories/snapshots</url>
        <snapshots>
            <enabled>true</enabled>
        </snapshots>
        <releases>
            <enabled>false</enabled>
        </releases>
    </repository>

</repositories>
<pluginRepositories>
    <pluginRepository>
        <id>spring-snapshots</id>
        <name>Spring Snapshots</name>
        <url>http://repo.spring.io/snapshot</url>
        <snapshots>
            <enabled>true</enabled>
        </snapshots>
    </pluginRepository>
    <pluginRepository>
        <id>spring-milestones</id>
        <name>Spring Milestones</name>
        <url>http://repo.spring.io/milestone</url>
        <snapshots>
            <enabled>false</enabled>
        </snapshots>
    </pluginRepository>
</pluginRepositories>
[/code]The app fails to launch:

[code]
/\ / ’ __ _ () __ __ _ \ \ \
( ( )__ | '_ | '| | ’ / ` | \ \ \
\/ )| |)| | | | | || (| | ) ) ) )
’ || .__|| ||| |_, | / / / /
=========||==============|/=////
:: Spring Boot :: (v1.2.5.RELEASE)

2016-02-29 19:06:22.912 INFO 4600 — [ main]
org.vaadin.tkspring.Application : Starting Application on XTreme with PID 4600 (F:\My_Devs\MetaConcept\Ingeo\r&d\studies\vaadin-spring-touchkit\target\classes started by Monty in F:\My_Devs\MetaConcept\Ingeo\r&d\studies\vaadin-spring-touchkit)
2016-02-29 19:06:22.946 INFO 4600 — [ main]
ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@f4d528: startup date [Mon Feb 29 19:06:22 CET 2016]
; root of context hierarchy
2016-02-29 19:06:23.628 INFO 4600 — [ main]
o.s.b.f.s.DefaultListableBeanFactory : Overriding bean definition for bean ‘beanNameViewResolver’: replacing [Root bean: class [null]
; scope=; abstract=false; lazyInit=false; autowireMode=3; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=org.springframework.boot.autoconfigure.web.ErrorMvcAutoConfiguration$WhitelabelErrorViewConfiguration; factoryMethodName=beanNameViewResolver; initMethodName=null; destroyMethodName=(inferred); defined in class path resource [org/springframework/boot/autoconfigure/web/ErrorMvcAutoConfiguration$WhitelabelErrorViewConfiguration.class]
] with [Root bean: class [null]
; scope=; abstract=false; lazyInit=false; autowireMode=3; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=org.springframework.boot.autoconfigure.web.WebMvcAutoConfiguration$WebMvcAutoConfigurationAdapter; factoryMethodName=beanNameViewResolver; initMethodName=null; destroyMethodName=(inferred); defined in class path resource [org/springframework/boot/autoconfigure/web/WebMvcAutoConfiguration$WebMvcAutoConfigurationAdapter.class]
]
2016-02-29 19:06:23.902 WARN 4600 — [ main]
ationConfigEmbeddedWebApplicationContext : Exception encountered during context initialization - cancelling refresh attempt

org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor’: Invocation of init method failed; nested exception is java.lang.NoClassDefFoundError: javax/validation/ParameterNameProvider
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1574)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199)
at org.springframework.context.support.PostProcessorRegistrationDelegate.registerBeanPostProcessors(PostProcessorRegistrationDelegate.java:199)
at org.springframework.context.support.AbstractApplicationContext.registerBeanPostProcessors(AbstractApplicationContext.java:615)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:465)
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:118)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:686)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:320)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:957)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:946)
at org.vaadin.tkspring.Application.main(Application.java:12)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:144)
Caused by: java.lang.NoClassDefFoundError: javax/validation/ParameterNameProvider
at org.hibernate.validator.HibernateValidator.createGenericConfiguration(HibernateValidator.java:41)
at javax.validation.Validation$GenericBootstrapImpl.configure(Validation.java:269)
at org.springframework.validation.beanvalidation.LocalValidatorFactoryBean.afterPropertiesSet(LocalValidatorFactoryBean.java:223)
at org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor$Jsr303ValidatorFactory.run(ConfigurationPropertiesBindingPostProcessor.java:381)
at org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor.afterPropertiesSet(ConfigurationPropertiesBindingPostProcessor.java:174)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1633)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1570)
… 20 common frames omitted
Caused by: java.lang.ClassNotFoundException: javax.validation.ParameterNameProvider
at java.net.URLClassLoader$1.run(URLClassLoader.java:372)
at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:360)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
… 27 common frames omitted

2016-02-29 19:06:23.906 INFO 4600 — [ main]
.b.l.ClasspathLoggingApplicationListener : Application failed to start with classpath: [file:/C:/Program%20Files%20(x86)/Java/jdk1.8.0_25/jre/lib/charsets.jar, file:/C:/Program%20Files%20(x86)/Java/jdk1.8.0_25/jre/lib/deploy.jar, file:/C:/Program%20Files%20(x86)/Java/jdk1.8.0_25/jre/lib/javaws.jar, file:/C:/Program%20Files%20(x86)/Java/jdk1.8.0_25/jre/lib/jce.jar, file:/C:/Program%20Files%20(x86)/Java/jdk1.8.0_25/jre/lib/jfr.jar, file:/C:/Program%20Files%20(x86)/Java/jdk1.8.0_25/jre/lib/jfxswt.jar, file:/C:/Program%20Files%20(x86)/Java/jdk1.8.0_25/jre/lib/jsse.jar, file:/C:/Program%20Files%20(x86)/Java/jdk1.8.0_25/jre/lib/management-agent.jar, file:/C:/Program%20Files%20(x86)/Java/jdk1.8.0_25/jre/lib/plugin.jar, file:/C:/Program%20Files%20(x86)/Java/jdk1.8.0_25/jre/lib/resources.jar, file:/C:/Program%20Files%20(x86)/Java/jdk1.8.0_25/jre/lib/rt.jar, file:/C:/Program%20Files%20(x86)/Java/jdk1.8.0_25/jre/lib/ext/access-bridge-32.jar, file:/C:/Program%20Files%20(x86)/Java/jdk1.8.0_25/jre/lib/ext/cldrdata.jar, file:/C:/Program%20Files%20(x86)/Java/jdk1.8.0_25/jre/lib/ext/dnsns.jar, file:/C:/Program%20Files%20(x86)/Java/jdk1.8.0_25/jre/lib/ext/jaccess.jar, file:/C:/Program%20Files%20(x86)/Java/jdk1.8.0_25/jre/lib/ext/jfxrt.jar, file:/C:/Program%20Files%20(x86)/Java/jdk1.8.0_25/jre/lib/ext/localedata.jar, file:/C:/Program%20Files%20(x86)/Java/jdk1.8.0_25/jre/lib/ext/nashorn.jar, file:/C:/Program%20Files%20(x86)/Java/jdk1.8.0_25/jre/lib/ext/sunec.jar, file:/C:/Program%20Files%20(x86)/Java/jdk1.8.0_25/jre/lib/ext/sunjce_provider.jar, file:/C:/Program%20Files%20(x86)/Java/jdk1.8.0_25/jre/lib/ext/sunmscapi.jar, file:/C:/Program%20Files%20(x86)/Java/jdk1.8.0_25/jre/lib/ext/sunpkcs11.jar, file:/C:/Program%20Files%20(x86)/Java/jdk1.8.0_25/jre/lib/ext/zipfs.jar, file:/F:/My_Devs/MetaConcept/Ingeo/r&d/studies/vaadin-spring-touchkit/target/classes/, file:/C:/Users/Monty/.m2/repository/org/springframework/boot/spring-boot-starter-actuator/1.2.5.RELEASE/spring-boot-starter-actuator-1.2.5.RELEASE.jar, file:/C:/Users/Monty/.m2/repository/org/springframework/boot/spring-boot-starter/1.2.5.RELEASE/spring-boot-starter-1.2.5.RELEASE.jar, file:/C:/Users/Monty/.m2/repository/org/springframework/boot/spring-boot-starter-logging/1.2.5.RELEASE/spring-boot-starter-logging-1.2.5.RELEASE.jar, file:/C:/Users/Monty/.m2/repository/org/slf4j/jcl-over-slf4j/1.7.12/jcl-over-slf4j-1.7.12.jar, file:/C:/Users/Monty/.m2/repository/org/slf4j/jul-to-slf4j/1.7.12/jul-to-slf4j-1.7.12.jar, file:/C:/Users/Monty/.m2/repository/org/slf4j/log4j-over-slf4j/1.7.12/log4j-over-slf4j-1.7.12.jar, file:/C:/Users/Monty/.m2/repository/ch/qos/logback/logback-classic/1.1.3/logback-classic-1.1.3.jar, file:/C:/Users/Monty/.m2/repository/ch/qos/logback/logback-core/1.1.3/logback-core-1.1.3.jar, file:/C:/Users/Monty/.m2/repository/org/yaml/snakeyaml/1.14/snakeyaml-1.14.jar, file:/C:/Users/Monty/.m2/repository/org/springframework/boot/spring-boot-actuator/1.2.5.RELEASE/spring-boot-actuator-1.2.5.RELEASE.jar, file:/C:/Users/Monty/.m2/repository/org/springframework/spring-context/4.1.7.RELEASE/spring-context-4.1.7.RELEASE.jar, file:/C:/Users/Monty/.m2/repository/org/springframework/spring-core/4.1.7.RELEASE/spring-core-4.1.7.RELEASE.jar, file:/C:/Users/Monty/.m2/repository/org/springframework/boot/spring-boot-starter-web/1.2.5.RELEASE/spring-boot-starter-web-1.2.5.RELEASE.jar, file:/C:/Users/Monty/.m2/repository/org/springframework/boot/spring-boot-starter-tomcat/1.2.5.RELEASE/spring-boot-starter-tomcat-1.2.5.RELEASE.jar, file:/C:/Users/Monty/.m2/repository/org/apache/tomcat/embed/tomcat-embed-core/8.0.23/tomcat-embed-core-8.0.23.jar, file:/C:/Users/Monty/.m2/repository/org/apache/tomcat/embed/tomcat-embed-el/8.0.23/tomcat-embed-el-8.0.23.jar, file:/C:/Users/Monty/.m2/repository/org/apache/tomcat/embed/tomcat-embed-logging-juli/8.0.23/tomcat-embed-logging-juli-8.0.23.jar, file:/C:/Users/Monty/.m2/repository/org/apache/tomcat/embed/tomcat-embed-websocket/8.0.23/tomcat-embed-websocket-8.0.23.jar, file:/C:/Users/Monty/.m2/repository/com/fasterxml/jackson/core/jackson-databind/2.4.6/jackson-databind-2.4.6.jar, file:/C:/Users/Monty/.m2/repository/com/fasterxml/jackson/core/jackson-annotations/2.4.6/jackson-annotations-2.4.6.jar, file:/C:/Users/Monty/.m2/repository/com/fasterxml/jackson/core/jackson-core/2.4.6/jackson-core-2.4.6.jar, file:/C:/Users/Monty/.m2/repository/org/hibernate/hibernate-validator/5.1.3.Final/hibernate-validator-5.1.3.Final.jar, file:/C:/Users/Monty/.m2/repository/org/jboss/logging/jboss-logging/3.1.3.GA/jboss-logging-3.1.3.GA.jar, file:/C:/Users/Monty/.m2/repository/com/fasterxml/classmate/1.0.0/classmate-1.0.0.jar, file:/C:/Users/Monty/.m2/repository/org/springframework/spring-web/4.1.7.RELEASE/spring-web-4.1.7.RELEASE.jar, file:/C:/Users/Monty/.m2/repository/org/springframework/spring-aop/4.1.7.RELEASE/spring-aop-4.1.7.RELEASE.jar, file:/C:/Users/Monty/.m2/repository/aopalliance/aopalliance/1.0/aopalliance-1.0.jar, file:/C:/Users/Monty/.m2/repository/org/springframework/spring-beans/4.1.7.RELEASE/spring-beans-4.1.7.RELEASE.jar, file:/C:/Users/Monty/.m2/repository/org/springframework/spring-webmvc/4.1.7.RELEASE/spring-webmvc-4.1.7.RELEASE.jar, file:/C:/Users/Monty/.m2/repository/org/springframework/spring-expression/4.1.7.RELEASE/spring-expression-4.1.7.RELEASE.jar, file:/C:/Users/Monty/.m2/repository/com/vaadin/vaadin-spring-boot/1.0.0/vaadin-spring-boot-1.0.0.jar, file:/C:/Users/Monty/.m2/repository/com/vaadin/vaadin-spring/1.0.0/vaadin-spring-1.0.0.jar, file:/C:/Users/Monty/.m2/repository/org/slf4j/slf4j-api/1.7.12/slf4j-api-1.7.12.jar, file:/C:/Users/Monty/.m2/repository/org/springframework/boot/spring-boot/1.2.5.RELEASE/spring-boot-1.2.5.RELEASE.jar, file:/C:/Users/Monty/.m2/repository/org/springframework/boot/spring-boot-autoconfigure/1.2.5.RELEASE/spring-boot-autoconfigure-1.2.5.RELEASE.jar, file:/C:/Users/Monty/.m2/repository/com/vaadin/vaadin-server/7.5.9/vaadin-server-7.5.9.jar, file:/C:/Users/Monty/.m2/repository/com/vaadin/vaadin-sass-compiler/0.9.12/vaadin-sass-compiler-0.9.12.jar, file:/C:/Users/Monty/.m2/repository/com/vaadin/external/flute/flute/1.3.0.gg2/flute-1.3.0.gg2.jar, file:/C:/Users/Monty/.m2/repository/com/vaadin/vaadin-shared/7.5.9/vaadin-shared-7.5.9.jar, file:/C:/Users/Monty/.m2/repository/com/vaadin/external/streamhtmlparser/streamhtmlparser-jsilver/0.0.10.vaadin1/streamhtmlparser-jsilver-0.0.10.vaadin1.jar, file:/C:/Users/Monty/.m2/repository/com/vaadin/external/google/guava/16.0.1.vaadin1/guava-16.0.1.vaadin1.jar, file:/C:/Users/Monty/.m2/repository/org/jsoup/jsoup/1.8.1/jsoup-1.8.1.jar, file:/C:/Users/Monty/.m2/repository/com/vaadin/addon/vaadin-touchkit-agpl/4.0.3/vaadin-touchkit-agpl-4.0.3.jar, file:/C:/Users/Monty/.m2/repository/org/vaadin/viritin/1.37/viritin-1.37.jar, file:/C:/Users/Monty/.m2/repository/org/vaadin/addon/confirmdialog/2.1.3/confirmdialog-2.1.3.jar, file:/C:/Users/Monty/.m2/repository/org/commonjava/googlecode/markdown4j/markdown4j/2.2-cj-1.0/markdown4j-2.2-cj-1.0.jar, file:/C:/Users/Monty/.m2/repository/commons-beanutils/commons-beanutils/1.9.2/commons-beanutils-1.9.2.jar, file:/C:/Users/Monty/.m2/repository/org/apache/commons/commons-lang3/3.3.2/commons-lang3-3.3.2.jar, file:/C:/Users/Monty/.m2/repository/javax/el/javax.el-api/2.2.4/javax.el-api-2.2.4.jar, file:/C:/Users/Monty/.m2/repository/org/w3c/css/sac/1.3/sac-1.3.jar, file:/C:/Users/Monty/.m2/repository/javax/validation/validation-api/1.0.0.GA/validation-api-1.0.0.GA.jar, file:/C:/Users/Monty/.m2/repository/commons-collections/commons-collections/3.2.1/commons-collections-3.2.1.jar, file:/C:/Users/Monty/.m2/repository/commons-io/commons-io/2.4/commons-io-2.4.jar, file:/C:/Users/Monty/.m2/repository/com/vaadin/vaadin-client-compiled/7.5.9/vaadin-client-compiled-7.5.9.jar, file:/C:/Users/Monty/.m2/repository/org/vaadin/juho/lib-gwt-imageupload/0.0.3/lib-gwt-imageupload-0.0.3.jar, file:/C:/Users/Monty/.m2/repository/org/vectomatic/lib-gwt-file/0.3.4/lib-gwt-file-0.3.4.jar, file:/C:/Program%20Files%20(x86)/JetBrains/IntelliJ%20IDEA%2015.0.2/lib/idea_rt.jar]

2016-02-29 19:06:23.907 ERROR 4600 — [ main]
o.s.boot.SpringApplication : Application startup failed

org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor’: Invocation of init method failed; nested exception is java.lang.NoClassDefFoundError: javax/validation/ParameterNameProvider
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1574)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199)
at org.springframework.context.support.PostProcessorRegistrationDelegate.registerBeanPostProcessors(PostProcessorRegistrationDelegate.java:199)
at org.springframework.context.support.AbstractApplicationContext.registerBeanPostProcessors(AbstractApplicationContext.java:615)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:465)
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:118)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:686)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:320)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:957)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:946)
at org.vaadin.tkspring.Application.main(Application.java:12)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:144)
Caused by: java.lang.NoClassDefFoundError: javax/validation/ParameterNameProvider
at org.hibernate.validator.HibernateValidator.createGenericConfiguration(HibernateValidator.java:41)
at javax.validation.Validation$GenericBootstrapImpl.configure(Validation.java:269)
at org.springframework.validation.beanvalidation.LocalValidatorFactoryBean.afterPropertiesSet(LocalValidatorFactoryBean.java:223)
at org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor$Jsr303ValidatorFactory.run(ConfigurationPropertiesBindingPostProcessor.java:381)
at org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor.afterPropertiesSet(ConfigurationPropertiesBindingPostProcessor.java:174)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1633)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1570)
… 20 common frames omitted
Caused by: java.lang.ClassNotFoundException: javax.validation.ParameterNameProvider
at java.net.URLClassLoader$1.run(URLClassLoader.java:372)
at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:360)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
… 27 common frames omitted

Exception in thread “main” org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor’: Invocation of init method failed; nested exception is java.lang.NoClassDefFoundError: javax/validation/ParameterNameProvider
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1574)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199)
at org.springframework.context.support.PostProcessorRegistrationDelegate.registerBeanPostProcessors(PostProcessorRegistrationDelegate.java:199)
at org.springframework.context.support.AbstractApplicationContext.registerBeanPostProcessors(AbstractApplicationContext.java:615)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:465)
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:118)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:686)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:320)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:957)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:946)
at org.vaadin.tkspring.Application.main(Application.java:12)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:144)
Caused by: java.lang.NoClassDefFoundError: javax/validation/ParameterNameProvider
at org.hibernate.validator.HibernateValidator.createGenericConfiguration(HibernateValidator.java:41)
at javax.validation.Validation$GenericBootstrapImpl.configure(Validation.java:269)
at org.springframework.validation.beanvalidation.LocalValidatorFactoryBean.afterPropertiesSet(LocalValidatorFactoryBean.java:223)
at org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor$Jsr303ValidatorFactory.run(ConfigurationPropertiesBindingPostProcessor.java:381)
at org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor.afterPropertiesSet(ConfigurationPropertiesBindingPostProcessor.java:174)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1633)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1570)
… 20 more
Caused by: java.lang.ClassNotFoundException: javax.validation.ParameterNameProvider
at java.net.URLClassLoader$1.run(URLClassLoader.java:372)
at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:360)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
… 27 more

Process finished with exit code 1
[/code]The structure of the app

spring-vaadin-touchkit src main java org.vaadin.tkstring client TakePhoto.java Application.java MainUI.java SpringAwareTouchKitServlet.java AppWidgetset.gwt.xml resources webapp pom.xml README. is the same as in the spring-vaadin-touchkit example to which I have added a “client” package, an AppWidgetset.gwt.xml file and a “TakePhoto” class:

[code]
package org.vaadin.tkspring.client;

import com.google.gwt.dom.client.Style;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.event.logical.shared.ResizeEvent;
import com.google.gwt.event.logical.shared.ResizeHandler;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.SimplePanel;
import com.google.gwt.user.client.ui.Widget;
import com.vaadin.addon.touchkit.gwt.client.ui.VerticalComponentGroupWidget;
import com.vaadin.client.ui.VButton;
import com.vaadin.client.ui.VCssLayout;
import org.vaadin.juho.imageupload.client.*;

/**
*
*/
public class TakePhoto extends VerticalComponentGroupWidget {
private final SimplePanel imagePanel;
private String thumbnailUrl;
private boolean imageLoaded;
// private final TicketViewModuleListener listener;

private final VButton removeButton = new VButton();
private final VButton takePhotoButton = new VButton();
private final ImageUpload fileUpload = new ImageUpload();

private void setImagePanelScale() {
    Widget parent = imagePanel.getParent();
    int width = parent.getOffsetWidth();
    imagePanel.getElement().getStyle().setFontSize(width, Style.Unit.PX);
}

public TakePhoto(/*final TicketViewModuleListener listener*/) {

// this.listener = listener;

    VCssLayout innerLayout = new VCssLayout();

// innerLayout.addStyleName(“photoinnerlayout”);

    imagePanel = new SimplePanel();

// imagePanel.addStyleName(“imagepanel”);
innerLayout.add(imagePanel);

    takePhotoButton.getElement().setId("uploadbutton");

// takePhotoButton.setStyleName(“parkingbutton”);
// takePhotoButton.addStyleName(“blue”);
// takePhotoButton.addStyleName(“textcentered”);
takePhotoButton.addClickHandler(new ClickHandler() {
@Override
public void onClick(ClickEvent event) {
fileUpload.click();
}
});

    fileUpload.setCapture(true);

    EXIFOrientationNormalizer normalizer = new EXIFOrientationNormalizer();
    normalizer.setMaxWidth(1024);
    normalizer.setMaxHeight(1024);
    fileUpload.addImageManipulator(normalizer);
    fileUpload.addImageLoadedHandler(new ImageLoadedHandler() {
        @Override
        public void onImageLoaded(ImageLoadedEvent event) {
            setImage(event.getImageData().getDataURL());
        }
    });

    ImageTransformer thumbnailGenerator = new ImageTransformer();
    thumbnailGenerator.setImageDataSource(fileUpload);
    thumbnailGenerator.setMaxWidth(75);
    thumbnailGenerator.setMaxHeight(75);
    thumbnailGenerator.addImageLoadedHandler(new ImageLoadedHandler() {
        @Override
        public void onImageLoaded(ImageLoadedEvent event) {
            thumbnailUrl = event.getImageData().getDataURL();
        }
    });

    VCssLayout buttonsLayout = new VCssLayout();

// buttonsLayout.addStyleName(“buttonslayout”);
buttonsLayout.add(fileUpload);
buttonsLayout.add(takePhotoButton);

    removeButton.getElement().setId("removebutton");
    removeButton.setText("Remove");

// removeButton.setStyleName(“parkingbutton”);
// removeButton.addStyleName(“blue”);
// removeButton.addStyleName(“textcentered”);
removeButton.addClickHandler(new ClickHandler() {
@Override
public void onClick(final ClickEvent event) {
removeImage();
}
});
buttonsLayout.add(removeButton);

    innerLayout.add(buttonsLayout);

    add(innerLayout);

    Window.addResizeHandler(new ResizeHandler() {
        @Override
        public void onResize(final ResizeEvent event) {
            setImagePanelScale();
        }
    });
}

private void setImage(String dataURL) {

// OfflineDataService.setCachedImage(dataURL);
imageLoaded = true;

    imagePanel.getElement().getStyle()
            .setBackgroundImage("url(" + dataURL + ")");
    takePhotoButton.setText("Replace...");

// takePhotoButton.removeStyleName(“empty”);

    imagePanel.setVisible(true);
    removeButton.setVisible(true);

// listener.fieldsChanged();
setImagePanelScale();
}

private void removeImage() {
    imageLoaded = false;
    thumbnailUrl = null;
    takePhotoButton.setText("Take a photo");

// takePhotoButton.addStyleName(“empty”);
imagePanel.setVisible(false);
removeButton.setVisible(false);
// listener.fieldsChanged();
setImagePanelScale();
}

}
[/code]What I have noticed:

  • The lib-gwt-imageupload component is not added automatically to the Widgeset.gwt.xml file - I have therefore added it manually - is this normal?
  • After proceeding commenting out the added dependencies one by one, It would seem that the culprits causing the app launch to fail and crash are the vaadin-client and vaadin-client-compiler dependencies.

Thank you for reading up until here - as I said, I have hit a wall and do not know where to look any more (other than here) for a solution to implement a simple example to make this thing work as expected.
Any help/examples or anyone willing to explain the best practice on how to handle this (type of) component (which doesn’t seem to behave like the others) - greatly appreciated.

Thanks in advance!

2

Well after digging further it appears that the failed launch of the app was due to the following missing dependencies:

<dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-validator</artifactId>
    <version>5.1.0.Final</version>
</dependency>
<dependency>
    <groupId>javax.validation</groupId>
    <artifactId>validation-api</artifactId>
    <version>1.1.0.Final</version>
</dependency>

Now the apps
starts without crashing
 but only up until refreshing the localhost page. An exception is thrown by the servlet.service for servlet springAwareTouchKitServlet:

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v1.2.5.RELEASE)

2016-03-01 15:44:49.669  INFO 1604 --- [           main]
 org.vaadin.tkspring.Application          : Starting Application on XTreme with PID 1604 (F:\My_Devs\MetaConcept\Ingeo\r&d\studies\vaadin-spring-touchkit\target\classes started by Monty in F:\My_Devs\MetaConcept\Ingeo\r&d\studies\vaadin-spring-touchkit)
2016-03-01 15:44:49.704  INFO 1604 --- [           main]
 ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@f4d528: startup date [Tue Mar 01 15:44:49 CET 2016]
; root of context hierarchy
2016-03-01 15:44:50.370  INFO 1604 --- [           main]
 o.s.b.f.s.DefaultListableBeanFactory     : Overriding bean definition for bean 'beanNameViewResolver': replacing [Root bean: class [null]
; scope=; abstract=false; lazyInit=false; autowireMode=3; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=org.springframework.boot.autoconfigure.web.ErrorMvcAutoConfiguration$WhitelabelErrorViewConfiguration; factoryMethodName=beanNameViewResolver; initMethodName=null; destroyMethodName=(inferred); defined in class path resource [org/springframework/boot/autoconfigure/web/ErrorMvcAutoConfiguration$WhitelabelErrorViewConfiguration.class]
] with [Root bean: class [null]
; scope=; abstract=false; lazyInit=false; autowireMode=3; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=org.springframework.boot.autoconfigure.web.WebMvcAutoConfiguration$WebMvcAutoConfigurationAdapter; factoryMethodName=beanNameViewResolver; initMethodName=null; destroyMethodName=(inferred); defined in class path resource [org/springframework/boot/autoconfigure/web/WebMvcAutoConfiguration$WebMvcAutoConfigurationAdapter.class]
]
2016-03-01 15:44:51.078  INFO 1604 --- [           main]
 s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat initialized with port(s): 8080 (http)
2016-03-01 15:44:51.212  INFO 1604 --- [           main]
 o.apache.catalina.core.StandardService   : Starting service Tomcat
2016-03-01 15:44:51.213  INFO 1604 --- [           main]
 org.apache.catalina.core.StandardEngine  : Starting Servlet Engine: Apache Tomcat/8.0.23
2016-03-01 15:44:51.324  INFO 1604 --- [ost-startStop-1]
 o.a.c.c.C.[Tomcat]
.[localhost]
.
[/]       : Initializing Spring embedded WebApplicationContext
2016-03-01 15:44:51.324  INFO 1604 --- [ost-startStop-1]
 o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 1622 ms
2016-03-01 15:44:51.424  INFO 1604 --- [ost-startStop-1]
 c.v.s.b.i.VaadinServletConfiguration     : Registering Vaadin servlet
2016-03-01 15:44:51.425  INFO 1604 --- [ost-startStop-1]
 c.v.s.b.i.VaadinServletConfiguration     : Servlet will be mapped to URLs 
[/vaadinServlet/*, /VAADIN/*]
2016-03-01 15:44:51.449  INFO 1604 --- [ost-startStop-1]
 c.v.s.b.i.VaadinServletConfiguration     : Setting servlet init parameters
2016-03-01 15:44:51.449  INFO 1604 --- [ost-startStop-1]
 c.v.s.b.i.VaadinServletConfiguration     : Set servlet init parameter [productionMode]
 = [false]

2016-03-01 15:44:51.449  INFO 1604 --- [ost-startStop-1]
 c.v.s.b.i.VaadinServletConfiguration     : Set servlet init parameter [resourceCacheTime]
 = [3600]

2016-03-01 15:44:51.449  INFO 1604 --- [ost-startStop-1]
 c.v.s.b.i.VaadinServletConfiguration     : Set servlet init parameter [heartbeatInterval]
 = [300]

2016-03-01 15:44:51.449  INFO 1604 --- [ost-startStop-1]
 c.v.s.b.i.VaadinServletConfiguration     : Set servlet init parameter [closeIdleSessions]
 = [false]

2016-03-01 15:44:52.002  INFO 1604 --- [ost-startStop-1]
 o.s.b.c.e.ServletRegistrationBean        : Mapping servlet: 'dispatcherServlet' to 
[/]
2016-03-01 15:44:52.003  INFO 1604 --- [ost-startStop-1]
 o.s.b.c.e.ServletRegistrationBean        : Mapping servlet: 'springAwareTouchKitServlet' to 
[/vaadinServlet/*, /VAADIN/*]
2016-03-01 15:44:52.005  INFO 1604 --- [ost-startStop-1]
 o.s.b.c.embedded.FilterRegistrationBean  : Mapping filter: 'metricFilter' to: 
[/*]
2016-03-01 15:44:52.005  INFO 1604 --- [ost-startStop-1]
 o.s.b.c.embedded.FilterRegistrationBean  : Mapping filter: 'characterEncodingFilter' to: 
[/*]
2016-03-01 15:44:52.005  INFO 1604 --- [ost-startStop-1]
 o.s.b.c.embedded.FilterRegistrationBean  : Mapping filter: 'hiddenHttpMethodFilter' to: 
[/*]
2016-03-01 15:44:52.005  INFO 1604 --- [ost-startStop-1]
 o.s.b.c.embedded.FilterRegistrationBean  : Mapping filter: 'webRequestLoggingFilter' to: 
[/*]
2016-03-01 15:44:52.006  INFO 1604 --- [ost-startStop-1]
 o.s.b.c.embedded.FilterRegistrationBean  : Mapping filter: 'applicationContextIdFilter' to: 
[/*]
2016-03-01 15:44:52.175  INFO 1604 --- [           main]
 s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for @ControllerAdvice: org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@f4d528: startup date [Tue Mar 01 15:44:49 CET 2016]
; root of context hierarchy
2016-03-01 15:44:52.230  INFO 1604 --- [           main]
 s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{
[/error]}" onto public org.springframework.http.ResponseEntity<java.util.Map<java.lang.String, java.lang.Object>> org.springframework.boot.autoconfigure.web.BasicErrorController.error(javax.servlet.http.HttpServletRequest)
2016-03-01 15:44:52.230  INFO 1604 --- [           main]
 s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{
[/error],produces=[text/html]
}" onto public org.springframework.web.servlet.ModelAndView org.springframework.boot.autoconfigure.web.BasicErrorController.errorHtml(javax.servlet.http.HttpServletRequest)
2016-03-01 15:44:52.248  INFO 1604 --- [           main]
 o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path 
[/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]

2016-03-01 15:44:52.248  INFO 1604 --- [           main]
 o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path 
[/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]

2016-03-01 15:44:52.278  INFO 1604 --- [           main]
 o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path 
[/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]

2016-03-01 15:44:52.291  INFO 1604 --- [           main]
 c.v.s.b.i.VaadinServletConfiguration     : Checking the application context for Vaadin UI mappings
2016-03-01 15:44:52.293  INFO 1604 --- [           main]
 c.v.s.b.i.VaadinServletConfiguration     : Registering Vaadin servlet of type [org.vaadin.tkspring.SpringAwareTouchKitServlet]

2016-03-01 15:44:52.297  INFO 1604 --- [           main]
 c.v.s.b.i.VaadinServletConfiguration     : Forwarding @SpringUI URLs from {/=org.springframework.web.servlet.mvc.ServletForwardingController@1ebcff}
2016-03-01 15:44:52.297  INFO 1604 --- [           main]
 o.s.w.s.handler.SimpleUrlHandlerMapping  : Root mapping to handler of type [class org.springframework.web.servlet.mvc.ServletForwardingController]

2016-03-01 15:44:52.302  INFO 1604 --- [           main]
 c.v.spring.navigator.SpringViewProvider  : Looking up SpringViews
2016-03-01 15:44:52.305  WARN 1604 --- [           main]
 c.v.spring.navigator.SpringViewProvider  : No SpringViews found
2016-03-01 15:44:52.526  INFO 1604 --- [           main]
 o.s.b.a.e.mvc.EndpointHandlerMapping     : Mapped "{
[/configprops],methods=[GET]
}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.EndpointMvcAdapter.invoke()
2016-03-01 15:44:52.527  INFO 1604 --- [           main]
 o.s.b.a.e.mvc.EndpointHandlerMapping     : Mapped "{
[/trace],methods=[GET]
}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.EndpointMvcAdapter.invoke()
2016-03-01 15:44:52.527  INFO 1604 --- [           main]
 o.s.b.a.e.mvc.EndpointHandlerMapping     : Mapped "{
[/dump],methods=[GET]
}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.EndpointMvcAdapter.invoke()
2016-03-01 15:44:52.527  INFO 1604 --- [           main]
 o.s.b.a.e.mvc.EndpointHandlerMapping     : Mapped "{
[/env/{name:.*}],methods=[GET]
}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.EnvironmentMvcEndpoint.value(java.lang.String)
2016-03-01 15:44:52.527  INFO 1604 --- [           main]
 o.s.b.a.e.mvc.EndpointHandlerMapping     : Mapped "{
[/env],methods=[GET]
}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.EndpointMvcAdapter.invoke()
2016-03-01 15:44:52.527  INFO 1604 --- [           main]
 o.s.b.a.e.mvc.EndpointHandlerMapping     : Mapped "{
[/metrics/{name:.*}],methods=[GET]
}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.MetricsMvcEndpoint.value(java.lang.String)
2016-03-01 15:44:52.528  INFO 1604 --- [           main]
 o.s.b.a.e.mvc.EndpointHandlerMapping     : Mapped "{
[/metrics],methods=[GET]
}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.EndpointMvcAdapter.invoke()
2016-03-01 15:44:52.528  INFO 1604 --- [           main]
 o.s.b.a.e.mvc.EndpointHandlerMapping     : Mapped "{
[/info],methods=[GET]
}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.EndpointMvcAdapter.invoke()
2016-03-01 15:44:52.528  INFO 1604 --- [           main]
 o.s.b.a.e.mvc.EndpointHandlerMapping     : Mapped "{
[/mappings],methods=[GET]
}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.EndpointMvcAdapter.invoke()
2016-03-01 15:44:52.528  INFO 1604 --- [           main]
 o.s.b.a.e.mvc.EndpointHandlerMapping     : Mapped "{
[/autoconfig],methods=[GET]
}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.EndpointMvcAdapter.invoke()
2016-03-01 15:44:52.528  INFO 1604 --- [           main]
 o.s.b.a.e.mvc.EndpointHandlerMapping     : Mapped "{
[/beans],methods=[GET]
}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.EndpointMvcAdapter.invoke()
2016-03-01 15:44:52.529  INFO 1604 --- [           main]
 o.s.b.a.e.mvc.EndpointHandlerMapping     : Mapped "{
[/health]}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.HealthMvcEndpoint.invoke(java.security.Principal)
2016-03-01 15:44:52.539  INFO 1604 --- [           main]
 o.s.j.e.a.AnnotationMBeanExporter        : Registering beans for JMX exposure on startup
2016-03-01 15:44:52.544  INFO 1604 --- [           main]
 o.s.c.support.DefaultLifecycleProcessor  : Starting beans in phase 0
2016-03-01 15:44:52.667  INFO 1604 --- [           main]
 s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat started on port(s): 8080 (http)
2016-03-01 15:44:52.668  INFO 1604 --- [           main]
 org.vaadin.tkspring.Application          : Started Application in 3.216 seconds (JVM running for 3.541)
2016-03-01 15:45:00.175  INFO 1604 --- [nio-8080-exec-1]
 o.a.c.c.C.[Tomcat]
.[localhost]
.
[/]       : Initializing Spring FrameworkServlet 'dispatcherServlet'
2016-03-01 15:45:00.175  INFO 1604 --- [nio-8080-exec-1]
 o.s.web.servlet.DispatcherServlet        : FrameworkServlet 'dispatcherServlet': initialization started
2016-03-01 15:45:00.189  INFO 1604 --- [nio-8080-exec-1]
 o.s.web.servlet.DispatcherServlet        : FrameworkServlet 'dispatcherServlet': initialization completed in 14 ms
2016-03-01 15:45:00.211  WARN 1604 --- [nio-8080-exec-1]
 c.v.s.DefaultDeploymentConfiguration     :
=================================================================
Vaadin is running in DEBUG MODE.
Add productionMode=true to web.xml to disable debug features.
To show debug window, add ?debug to your application URL.
=================================================================
2016-03-01 15:45:00.248  INFO 1604 --- [nio-8080-exec-1]
 c.vaadin.spring.server.SpringUIProvider  : Checking the application context for Vaadin UIs
2016-03-01 15:45:00.250  INFO 1604 --- [nio-8080-exec-1]
 c.vaadin.spring.server.SpringUIProvider  : Found Vaadin UI [org.vaadin.tkspring.MainUI]

2016-03-01 15:45:00.494 ERROR 1604 --- [nio-8080-exec-5]
 com.vaadin.server.DefaultErrorHandler    :

java.lang.NoClassDefFoundError: com/google/gwt/user/client/ui/ComplexPanel
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:760)
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:455)
    at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:367)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:360)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:760)
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:455)
    at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:367)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:360)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    at org.vaadin.tkspring.MainUI.init(MainUI.java:28)
    at com.vaadin.ui.UI.doInit(UI.java:675)
    at com.vaadin.server.communication.UIInitHandler.getBrowserDetailsUI(UIInitHandler.java:214)
    at com.vaadin.server.communication.UIInitHandler.synchronizedHandleRequest(UIInitHandler.java:74)
    at com.vaadin.server.SynchronizedRequestHandler.handleRequest(SynchronizedRequestHandler.java:41)
    at com.vaadin.server.VaadinService.handleRequest(VaadinService.java:1408)
    at com.vaadin.server.VaadinServlet.service(VaadinServlet.java:351)
    at org.vaadin.tkspring.SpringAwareTouchKitServlet.service(SpringAwareTouchKitServlet.java:38)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:721)
    at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:466)
    at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:358)
    at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:318)
    at org.springframework.web.servlet.mvc.ServletForwardingController.handleRequestInternal(ServletForwardingController.java:128)
    at org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:146)
    at org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:50)
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959)
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:967)
    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:869)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:648)
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:843)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.springframework.boot.actuate.autoconfigure.EndpointWebMvcAutoConfiguration$ApplicationContextHeaderFilter.doFilterInternal(EndpointWebMvcAutoConfiguration.java:295)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.springframework.boot.actuate.trace.WebRequestTraceFilter.doFilterInternal(WebRequestTraceFilter.java:102)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:77)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:85)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.springframework.boot.actuate.autoconfigure.MetricsFilter.doFilterInternal(MetricsFilter.java:68)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518)
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1091)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:668)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1521)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1478)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.ClassNotFoundException: com.google.gwt.user.client.ui.ComplexPanel
    at java.net.URLClassLoader$1.run(URLClassLoader.java:372)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:360)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    ... 89 common frames omitted

2016-03-01 15:45:00.496 ERROR 1604 --- [nio-8080-exec-5]
 c.c.C.[.[.[.[springAwareTouchKitServlet]
 : Servlet.service() for servlet springAwareTouchKitServlet threw exception

java.lang.ClassNotFoundException: com.google.gwt.user.client.ui.ComplexPanel
    at java.net.URLClassLoader$1.run(URLClassLoader.java:372)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:360)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:760)
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:455)
    at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:367)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:360)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:760)
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:455)
    at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:367)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:360)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    at org.vaadin.tkspring.MainUI.init(MainUI.java:28)
    at com.vaadin.ui.UI.doInit(UI.java:675)
    at com.vaadin.server.communication.UIInitHandler.getBrowserDetailsUI(UIInitHandler.java:214)
    at com.vaadin.server.communication.UIInitHandler.synchronizedHandleRequest(UIInitHandler.java:74)
    at com.vaadin.server.SynchronizedRequestHandler.handleRequest(SynchronizedRequestHandler.java:41)
    at com.vaadin.server.VaadinService.handleRequest(VaadinService.java:1408)
    at com.vaadin.server.VaadinServlet.service(VaadinServlet.java:351)
    at org.vaadin.tkspring.SpringAwareTouchKitServlet.service(SpringAwareTouchKitServlet.java:38)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:721)
    at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:466)
    at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:358)
    at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:318)
    at org.springframework.web.servlet.mvc.ServletForwardingController.handleRequestInternal(ServletForwardingController.java:128)
    at org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:146)
    at org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:50)
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959)
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:967)
    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:869)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:648)
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:843)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.springframework.boot.actuate.autoconfigure.EndpointWebMvcAutoConfiguration$ApplicationContextHeaderFilter.doFilterInternal(EndpointWebMvcAutoConfiguration.java:295)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.springframework.boot.actuate.trace.WebRequestTraceFilter.doFilterInternal(WebRequestTraceFilter.java:102)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:77)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:85)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.springframework.boot.actuate.autoconfigure.MetricsFilter.doFilterInternal(MetricsFilter.java:68)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518)
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1091)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:668)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1521)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1478)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Thread.java:745)

2016-03-01 15:45:00.503 ERROR 1604 --- [nio-8080-exec-5]
 o.a.c.c.C.[.[.
[/]
.[dispatcherServlet]
    : Servlet.service() for servlet [dispatcherServlet]
 in context with path threw exception [com.vaadin.server.ServiceException: java.lang.NoClassDefFoundError: com/google/gwt/user/client/ui/ComplexPanel]
 with root cause

java.lang.ClassNotFoundException: com.google.gwt.user.client.ui.ComplexPanel
    at java.net.URLClassLoader$1.run(URLClassLoader.java:372)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:360)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:760)
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:455)
    at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:367)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:360)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:760)
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:455)
    at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:367)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:360)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    at org.vaadin.tkspring.MainUI.init(MainUI.java:28)
    at com.vaadin.ui.UI.doInit(UI.java:675)
    at com.vaadin.server.communication.UIInitHandler.getBrowserDetailsUI(UIInitHandler.java:214)
    at com.vaadin.server.communication.UIInitHandler.synchronizedHandleRequest(UIInitHandler.java:74)
    at com.vaadin.server.SynchronizedRequestHandler.handleRequest(SynchronizedRequestHandler.java:41)
    at com.vaadin.server.VaadinService.handleRequest(VaadinService.java:1408)
    at com.vaadin.server.VaadinServlet.service(VaadinServlet.java:351)
    at org.vaadin.tkspring.SpringAwareTouchKitServlet.service(SpringAwareTouchKitServlet.java:38)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:721)
    at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:466)
    at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:358)
    at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:318)
    at org.springframework.web.servlet.mvc.ServletForwardingController.handleRequestInternal(ServletForwardingController.java:128)
    at org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:146)
    at org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:50)
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959)
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:967)
    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:869)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:648)
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:843)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.springframework.boot.actuate.autoconfigure.EndpointWebMvcAutoConfiguration$ApplicationContextHeaderFilter.doFilterInternal(EndpointWebMvcAutoConfiguration.java:295)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.springframework.boot.actuate.trace.WebRequestTraceFilter.doFilterInternal(WebRequestTraceFilter.java:102)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:77)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:85)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.springframework.boot.actuate.autoconfigure.MetricsFilter.doFilterInternal(MetricsFilter.java:68)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518)
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1091)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:668)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1521)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1478)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Thread.java:745)

2016-03-01 15:45:00.528  INFO 1604 --- [nio-8080-exec-8]
 com.vaadin.server.VaadinServlet          : Requested resource 
[/VAADIN/themes/base/fonts/fontawesome-webfont.woff] not found from filesystem or through class loader. Add widgetset and/or theme JAR to your classpath or add files to WebContent/VAADIN folder

and the error message displayed on the page:

Whitelabel Error Page

This application has no explicit mapping for /error, so you are seeing this as a fallback.
Tue Mar 01 15:45:00 CET 2016
There was an unexpected error (type=Internal Server Error, status=500).
java.lang.NoClassDefFoundError: com/google/gwt/user/client/ui/ComplexPanel

Obviously it is still not working but there is that nice feeling of finally getting closer :slight_smile:

3

In my excitement yesterday, I forgot to say that the error mentioned in my 2nd post occurs when I add:

final TakePhoto takePhoto = new TakePhoto(); to the init() method of MainUI class.

I have also tried to declare the component directly again in the init() method of the MainUI class but this time, the error on the page is:

There was an unexpected error (type=Internal Server Error, status=500).
java.lang.NoClassDefFoundError: com/google/gwt/user/client/ui/HasName

Well unfortunately, I am still stuck and do not understand what I need to do to make this component works and hope that someone will shime in to cast some light on this mistery - thanks in advance again :slight_smile:

4

First of all, please accept my apologies as I just realised that I have likely posted in the wrong forum - huuuuh!! - please feel free to move it to the relevant one or advise me on the best method to do so to avoid post crossing.

Also, after digging some more, this
post
cast some light on the matter and I will follow the advice suggested to hopefully, finally, find the Holy Grail :slight_smile:

Anyhow, this doesn’t close this thread and anyone willing to put its pinch of salt on the matter is still welcome - thanks again. :slight_smile: