Vaadin8 not loading widgetset

Josh49 · April 7, 2017, 8:29pm

I’m upgrading a fairly big project to Vaadin 8, and I think I’m really close to it actually working, except every time I run the application, it gives me an error:

Failed to load the widgetset: ./VAADIN/widgetsets/com.vaadin.DefaultWidgetSet/com.vaadin.DefaultWidgetSet.nocache.js?1491596745122I think there’s an error in my POM, but I don’t know what it could be.

[code]

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

4.0.0

<groupId>com.styleconnect</groupId>
<artifactId>Crescent-CRM-Vaadin-Maven</artifactId>
<packaging>war</packaging>
<version>1.0-SNAPSHOT</version>
<name>Crescent-CRM-Vaadin-Maven</name>

<prerequisites>
    <maven>3</maven>
</prerequisites>

<properties>
    
    <vaadin.version>8.0.5</vaadin.version>
    
    <vaadin.plugin.version>${vaadin.version}</vaadin.plugin.version>
    
    
    <jetty.plugin.version>9.3.9.v20160517</jetty.plugin.version>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
    <!-- If there are no local customisations, this can also be "fetch" or "cdn" -->
    <vaadin.widgetset.mode>local</vaadin.widgetset.mode>
</properties>

<repositories>
    <repository>
        <id>vaadin-addons</id>
        <url>http://maven.vaadin.com/vaadin-addons</url>
    </repository>
</repositories>

<dependencyManagement>
    <dependencies>

        <dependency>
             <groupId>com.google.apis</groupId>
            <artifactId>google-api-services-oauth2</artifactId>
             <version>v2-rev124-1.22.0</version>
           </dependency>
           
        <dependency>
            <groupId>com.vaadin</groupId>
            <artifactId>vaadin-bom</artifactId>
            <version>${vaadin.version}</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
    </dependencies>
</dependencyManagement>

<dependencies>
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>javax.servlet-api</artifactId>
        <version>3.0.1</version>
        <scope>provided</scope>
    </dependency>

    <dependency>
        <groupId>com.vaadin</groupId>
        <artifactId>vaadin-compatibility-server</artifactId>
    </dependency>
    <dependency>
        <groupId>com.vaadin</groupId>
        <artifactId>vaadin-push</artifactId>
    </dependency>
    <dependency>
        <groupId>com.vaadin</groupId>
        <artifactId>vaadin-compatibility-client-compiled</artifactId>
    </dependency>
    <dependency>
        <groupId>com.vaadin</groupId>
        <artifactId>vaadin-themes</artifactId>
    </dependency>
    
    <dependency>
        <groupId>com.google.code.gson</groupId>
        <artifactId>gson</artifactId>
        <version>2.7</version>
    </dependency>
    <dependency>
        <groupId>com.google.api-client</groupId>
        <artifactId>google-api-client-servlet</artifactId>
        <version>1.22.0</version>
    </dependency>
    <dependency>
        <groupId>org.imgscalr</groupId>
        <artifactId>imgscalr-lib</artifactId>
        <version>4.2</version>
    </dependency>
            <!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->

mysql mysql-connector-java 5.1.41

    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-core</artifactId>
        <version>4.3.7.RELEASE</version>
    </dependency>
    
    <!-- https://mvnrepository.com/artifact/org.springframework/spring-web -->

org.springframework spring-web 4.3.7.RELEASE org.springframework.security spring-security-web 4.2.2.RELEASE

</dependencies>

<build>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-war-plugin</artifactId>
            <version>2.6</version>
            <configuration>
                <failOnMissingWebXml>false</failOnMissingWebXml>
                
                <!-- Exclude an unnecessary file generated by the GWT compiler. -->
                <packagingExcludes>WEB-INF/classes/VAADIN/widgetsets/WEB-INF/**</packagingExcludes>
            </configuration>
        </plugin>
        
        
        <plugin>
            <groupId>com.vaadin</groupId>
            <artifactId>vaadin-maven-plugin</artifactId>
            <version>${vaadin.version}</version>
            <executions>
                <execution>
                    <goals>
                        
                        <goal>update-theme</goal>
                        <goal>update-widgetset</goal>
                        
                        <goal>compile</goal>
                        
                        
                        <goal>compile-theme</goal>
                        
                    </goals>
                </execution>
            </executions>
        </plugin>
        
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-clean-plugin</artifactId>
            <version>3.0.0</version>
            <!-- Clean up also any pre-compiled themes -->
            <configuration>
                <filesets>
                    <fileset>
                        <directory>src/main/webapp/VAADIN/themes</directory>
                        <includes>
                            <include>**/styles.css</include>
                            <include>**/styles.scss.cache</include>
                        </includes>
                    </fileset>
                </filesets>
            </configuration>
        </plugin>

    </plugins>
</build>

<profiles>
    <profile>
        <!-- Vaadin pre-release repositories -->
        <id>vaadin-prerelease</id>
        <activation>
            <activeByDefault>false</activeByDefault>
        </activation>

        <repositories>
            <repository>
                <id>vaadin-prereleases</id>
                <url>http://maven.vaadin.com/vaadin-prereleases</url>
            </repository>
            <repository>
                <id>vaadin-snapshots</id>
                <url>https://oss.sonatype.org/content/repositories/vaadin-snapshots/</url>
                <releases>
                    <enabled>false</enabled>
                </releases>
                <snapshots>
                    <enabled>true</enabled>
                </snapshots>
            </repository>
        </repositories>
        <pluginRepositories>
            <pluginRepository>
                <id>vaadin-prereleases</id>
                <url>http://maven.vaadin.com/vaadin-prereleases</url>
            </pluginRepository>
            <pluginRepository>
                <id>vaadin-snapshots</id>
                <url>https://oss.sonatype.org/content/repositories/vaadin-snapshots/</url>
                <releases>
                    <enabled>false</enabled>
                </releases>
                <snapshots>
                    <enabled>true</enabled>
                </snapshots>
            </pluginRepository>
        </pluginRepositories>
    </profile>
</profiles>

[/code]This is the build log. [code] [INFO] Scanning for projects... [INFO]

[INFO]

[INFO]
Building Crescent-CRM-Vaadin-Maven 1.0-SNAPSHOT
[INFO]

[INFO]

[INFO]
— maven-clean-plugin:3.0.0:clean (default-clean) @ Crescent-CRM-Vaadin-Maven —
[INFO]
Deleting /projects/Crescent-CRM-V/Crescent-CRM-Vaadin-Maven/src/main/webapp/VAADIN/themes (includes = [**/styles.css, **/styles.scss.cache]
, excludes = )
[INFO]

[INFO]
— vaadin-maven-plugin:8.0.5:update-theme (default) @ Crescent-CRM-Vaadin-Maven —
[INFO]
Updating theme VAADIN/themes/lightTheme
[INFO]
Widgetsets found from classpath:
[INFO]
Addon styles found from classpath:
[INFO]

[INFO]
Search took 16ms
[INFO]
Theme “VAADIN/themes/lightTheme” updated
[INFO]
Updating theme VAADIN/themes/darkTheme
[INFO]
Widgetsets found from classpath:
[INFO]
Addon styles found from classpath:
[INFO]

[INFO]
Search took 17ms
[INFO]
Theme “VAADIN/themes/darkTheme” updated
[INFO]

[INFO]
— vaadin-maven-plugin:8.0.5:update-widgetset (default) @ Crescent-CRM-Vaadin-Maven —
[WARNING]
GWT plugin is configured to detect modules, but none were found.
[INFO]
No widgetsets found - generating AppWidgetset if necessary.
[INFO]
Updating widgetset AppWidgetset
[INFO]
Adding resource directory to command classpath: /projects/Crescent-CRM-V/Crescent-CRM-Vaadin-Maven/src/main/resources
[INFO]
Adding resource directory to command classpath: /projects/Crescent-CRM-V/Crescent-CRM-Vaadin-Maven/target/generated-resources/gwt
[INFO]
Using com.vaadin:vaadin-client version 8.0.5
[INFO]
Using com.vaadin:vaadin-client-compiler version 8.0.5
[INFO]
Widgetsets found from classpath:
[INFO]
com.vaadin.DefaultWidgetSet in jar:file:/home/user/.m2/repository/com/vaadin/vaadin-client/8.0.5/vaadin-client-8.0.5.jar!/
[INFO]
Addon styles found from classpath:
[INFO]

[INFO]
Search took 8ms
[INFO]

[INFO]
— vaadin-maven-plugin:8.0.5:compile-theme (default) @ Crescent-CRM-Vaadin-Maven —
[INFO]
Updating theme VAADIN/themes/lightTheme
[INFO]
Theme “VAADIN/themes/lightTheme” compiled
[INFO]
Updating theme VAADIN/themes/darkTheme
[INFO]
Theme “VAADIN/themes/darkTheme” compiled
[INFO]

[INFO]
— maven-resources-plugin:2.6:resources (default-resources) @ Crescent-CRM-Vaadin-Maven —
[INFO]
Using ‘UTF-8’ encoding to copy filtered resources.
[INFO]
Copying 3 resources
[INFO]
Copying 0 resource
[INFO]

[INFO]
— maven-compiler-plugin:3.1:compile (default-compile) @ Crescent-CRM-Vaadin-Maven —
[INFO]
Changes detected - recompiling the module!
[INFO]
Compiling 71 source files to /projects/Crescent-CRM-V/Crescent-CRM-Vaadin-Maven/target/classes
[WARNING]
/projects/Crescent-CRM-V/Crescent-CRM-Vaadin-Maven/src/main/java/inventory/InventoryItem.java: Some input files use or override a deprecated API.
[WARNING]
/projects/Crescent-CRM-V/Crescent-CRM-Vaadin-Maven/src/main/java/inventory/InventoryItem.java: Recompile with -Xlint:deprecation for details.
[WARNING]
/projects/Crescent-CRM-V/Crescent-CRM-Vaadin-Maven/src/main/java/uiElements/TemplateRowUI.java: Some input files use unchecked or unsafe operations.
[WARNING]
/projects/Crescent-CRM-V/Crescent-CRM-Vaadin-Maven/src/main/java/uiElements/TemplateRowUI.java: Recompile with -Xlint:unchecked for details.
[INFO]

[INFO]
— vaadin-maven-plugin:8.0.5:compile (default) @ Crescent-CRM-Vaadin-Maven —
[WARNING]
GWT plugin is configured to detect modules, but none were found.
[INFO]
Using com.vaadin:vaadin-client version 8.0.5
[INFO]
Using com.vaadin:vaadin-client-compiler version 8.0.5
[INFO]

[INFO]
— maven-resources-plugin:2.6:testResources (default-testResources) @ Crescent-CRM-Vaadin-Maven —
[INFO]
Using ‘UTF-8’ encoding to copy filtered resources.
[INFO]
skip non existing resourceDirectory /projects/Crescent-CRM-V/Crescent-CRM-Vaadin-Maven/src/test/resources
[INFO]

[INFO]
— maven-compiler-plugin:3.1:testCompile (default-testCompile) @ Crescent-CRM-Vaadin-Maven —
[INFO]
No sources to compile
[INFO]

[INFO]
— maven-surefire-plugin:2.12.4:test (default-test) @ Crescent-CRM-Vaadin-Maven —
[INFO]
No tests to run.
[INFO]

[INFO]
— maven-war-plugin:2.6:war (default-war) @ Crescent-CRM-Vaadin-Maven —
[INFO]
Packaging webapp
[INFO]
Assembling webapp [Crescent-CRM-Vaadin-Maven]
in
[/projects/Crescent-CRM-V/Crescent-CRM-Vaadin-Maven/target/Crescent-CRM-Vaadin-Maven-1.0-SNAPSHOT]
[INFO]
Processing war project
[INFO]
Copying webapp resources
[/projects/Crescent-CRM-V/Crescent-CRM-Vaadin-Maven/src/main/webapp]
[INFO]
Webapp assembled in [362 msecs]

[INFO]
Building war: /projects/Crescent-CRM-V/Crescent-CRM-Vaadin-Maven/target/Crescent-CRM-Vaadin-Maven-1.0-SNAPSHOT.war
[INFO]

[INFO]
BUILD SUCCESS
[INFO]

[INFO]
Total time: 32.677 s
[INFO]
Finished at: 2017-04-07T20:25:19+00:00
[INFO]
Final Memory: 30M/441M
[INFO]

[/code]Does anyone have any idea whats going on?

Andrey169 · April 12, 2017, 8:14am

Hi, try to add annotation in UI class:

@Widgetset("com.vaadin.v7.Vaadin7WidgetSet")

Josh49 · April 12, 2017, 2:35pm

Thanks. Though I did have that, I simply reverted to before the upgrade and did the upgrade again. I don’t know why it worked this time, but it did.

Vaadin8 not loading widgetset

[INFO]

[INFO] Building Crescent-CRM-Vaadin-Maven 1.0-SNAPSHOT [INFO]

[INFO] Building war: /projects/Crescent-CRM-V/Crescent-CRM-Vaadin-Maven/target/Crescent-CRM-Vaadin-Maven-1.0-SNAPSHOT.war [INFO]

[INFO] BUILD SUCCESS [INFO]

[INFO] Total time: 32.677 s [INFO] Finished at: 2017-04-07T20:25:19+00:00 [INFO] Final Memory: 30M/441M [INFO]

[INFO]
Building Crescent-CRM-Vaadin-Maven 1.0-SNAPSHOT
[INFO]

[INFO]
Building war: /projects/Crescent-CRM-V/Crescent-CRM-Vaadin-Maven/target/Crescent-CRM-Vaadin-Maven-1.0-SNAPSHOT.war
[INFO]

[INFO]
BUILD SUCCESS
[INFO]

[INFO]
Total time: 32.677 s
[INFO]
Finished at: 2017-04-07T20:25:19+00:00
[INFO]
Final Memory: 30M/441M
[INFO]