Vaadin flow on Tomcat7

Luca101 · September 11, 2018, 8:30am

Hi,

I’m trying to run the Starter packs of Vaadin 10 on Tomcat 7, but Intellij throw the following exception:

GRAVE: Error during ServletContainerInitializer processing
javax.servlet.ServletException: Servlet 3.1+ is required
at com.vaadin.flow.server.startup.ServletVerifier.verifyServletVersion(ServletVerifier.java:51)
at com.vaadin.flow.server.startup.ServletVerifier.onStartup(ServletVerifier.java:34)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5623)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:899)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:875)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:652)
at org.apache.catalina.startup.HostConfig.manageApp(HostConfig.java:1863)
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:497)
at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:301)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)
at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)
at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:618)
at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:565)
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:497)
at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:301)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)
at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)
at javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1471)
at javax.management.remote.rmi.RMIConnectionImpl.access$300(RMIConnectionImpl.java:76)
at javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(RMIConnectionImpl.java:1312)
at javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(RMIConnectionImpl.java:1404)
at javax.management.remote.rmi.RMIConnectionImpl.invoke(RMIConnectionImpl.java:832)
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:497)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:323)
at sun.rmi.transport.Transport$1.run(Transport.java:200)
at sun.rmi.transport.Transport$1.run(Transport.java:197)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:196)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:568)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:826)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$256(TCPTransport.java:683)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:682)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NoSuchMethodException: javax.servlet.http.HttpServletResponse.setContentLengthLong(long)
at java.lang.Class.getMethod(Class.java:1786)
at com.vaadin.flow.server.startup.ServletVerifier.verifyServletVersion(ServletVerifier.java:46)
… 45 more

On my pom.xml file, i’m using the default dependency of servlet api

javax.servlet
javax.servlet-api
3.0.1
provided

Tomcat 7 uses as servlet specification the version 3.0 and even if i change the artifact version to 3.1 or 4.0, i receive the same exception.
How can i run a vaadin 10 starter on a tomcat 7 server ?

Pekka3 · September 11, 2018, 8:34am

Hi Luca. The simple answer is - you don’t since it is not supported. From the release notes:

Vaadin Flow requires Java Servlet API 3.1 (JSR-340) or newer. It is tested on:
Apache Tomcat 8.0.x, 8.5, 9

Luca101 · September 11, 2018, 9:09am

Ok, it means i will use tomcat 8.
Thanks for the immediate response.

Isaaco · April 19, 2020, 8:19pm

I have a Springboot Vaadin 14 App running well locally but when I take the War File to Deploy on our test Environment Tomcat 7 it fails.

POM.xml:

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

<modelVersion>4.0.0</modelVersion>
<groupId>com.voda.app</groupId>
<artifactId>srs</artifactId>
<name>Srs</name>
<version>2.0-SNAPSHOT</version>
<packaging>war</packaging>

<properties>
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>

    <vaadin.version>14.1.25</vaadin.version>

    <drivers.dir>${project.basedir}/drivers</drivers.dir>
    <drivers.downloader.phase>pre-integration-test</drivers.downloader.phase>
</properties>

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.2.0.RELEASE</version>
</parent>

<repositories>
    <!-- The order of definitions matters. Explicitly defining central here to make sure it has the highest priority. -->

    <!-- Main Maven repository -->
    <repository>
        <id>central</id>
        <url>https://repo.maven.apache.org/maven2</url>
        <snapshots>
            <enabled>false</enabled>
        </snapshots>
    </repository>
    <!-- Repository used by many Vaadin add-ons -->
    <repository>
        <id>Vaadin Directory</id>
        <url>https://maven.vaadin.com/vaadin-addons</url>
        <snapshots>
            <enabled>false</enabled>
        </snapshots>
    </repository>
</repositories>

<pluginRepositories>
    <!-- Main Maven repository -->
    <pluginRepository>
        <id>central</id>
        <url>https://repo.maven.apache.org/maven2</url>
        <snapshots>
            <enabled>false</enabled>
        </snapshots>
    </pluginRepository>
</pluginRepositories>

<dependencyManagement>
    <dependencies>
        <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>com.vaadin</groupId>
        <!-- Replace artifactId with vaadin-core to use only free components -->
        <artifactId>vaadin</artifactId>
        <exclusions>
            <!-- Webjars are only needed when running in Vaadin 13 compatibility mode -->
            <exclusion>
                <groupId>com.vaadin.webjar</groupId>
                <artifactId>*</artifactId>
            </exclusion>
            <exclusion>
                <groupId>org.webjars.bowergithub.insites</groupId>
                <artifactId>*</artifactId>
            </exclusion>
            <exclusion>
                <groupId>org.webjars.bowergithub.polymer</groupId>
                <artifactId>*</artifactId>
            </exclusion>
            <exclusion>
                <groupId>org.webjars.bowergithub.polymerelements</groupId>
                <artifactId>*</artifactId>
            </exclusion>
            <exclusion>
                <groupId>org.webjars.bowergithub.vaadin</groupId>
                <artifactId>*</artifactId>
            </exclusion>
            <exclusion>
                <groupId>org.webjars.bowergithub.webcomponents</groupId>
                <artifactId>*</artifactId>
            </exclusion>
        </exclusions>
    </dependency>
    <dependency>
        <groupId>com.vaadin</groupId>
        <artifactId>vaadin-spring-boot-starter</artifactId>
        <exclusions>
            <!-- Excluding so that webjars are not included. -->
            <exclusion>
                <groupId>com.vaadin</groupId>
                <artifactId>vaadin-core</artifactId>
            </exclusion>
        </exclusions>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-devtools</artifactId>
        <optional>true</optional>
    </dependency>

    <dependency>
        <groupId>za.vodacom.co.za</groupId>
        <artifactId>srsETL</artifactId>
        <version>1.0.0</version>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-tomcat</artifactId>
        <scope>provided</scope>
    </dependency>

    <dependency>
        <groupId>za.vodacom.co.za</groupId>
        <artifactId>vodaProp</artifactId>
        <version>1.0.0</version>
    </dependency>

    <dependency>
        <groupId>za.vodacom.co.za</groupId>
        <artifactId>mySQL5138</artifactId>
        <version>5.1.38</version>
    </dependency>

    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>javax.servlet-api</artifactId>
        <version>3.1.0</version>
        <scope>provided</scope>
 </dependency>

 <dependency>
     <groupId>org.springframework.security</groupId>
     <artifactId>spring-security-web</artifactId>
 </dependency>
 <dependency>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-jdbc</artifactId>
 </dependency>
 <!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java-->
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <scope>runtime</scope>
    </dependency>

    <!-- https://mvnrepository.com/artifact/log4j/log4j -->
    <dependency>
        <groupId>log4j</groupId>
        <artifactId>log4j</artifactId>
        <version>1.2.17</version>
    </dependency>
    <dependency>
        <groupId>org.springframework.security</groupId>
        <artifactId>spring-security-config</artifactId>
    </dependency>
    <dependency>
        <groupId>com.vaadin</groupId>
        <artifactId>vaadin-testbench</artifactId>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>cglib</groupId>
        <artifactId>cglib-nodep</artifactId>
        <version>2.2.2</version>
        <scope>compile</scope>
    </dependency>


</dependencies>

<build>
    <finalName>${artifactId}</finalName>
    <defaultGoal>spring-boot:run</defaultGoal>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
            <!-- Clean build and startup time for Vaadin apps sometimes may exceed
                 the default Spring Boot's 30sec timeout.  -->
            <configuration>
                <wait>500</wait>
                <maxAttempts>240</maxAttempts>
            </configuration>
        </plugin>

        <!--
            Take care of synchronizing java dependencies and imports in
            package.json and main.js files.
            It also creates webpack.config.js if not exists yet.
        -->
        <plugin>
            <groupId>com.vaadin</groupId>
            <artifactId>vaadin-maven-plugin</artifactId>
            <version>${vaadin.version}</version>
            <executions>
                <execution>
                    <goals>
                        <goal>prepare-frontend</goal>
                    </goals>
                </execution>
            </executions>
        </plugin>
    </plugins>
</build>

<profiles>
    <profile>
        <!-- Production mode is activated using -Pproduction -->
        <id>production</id>
        <properties>
            <vaadin.productionMode>true</vaadin.productionMode>
        </properties>

        <dependencies>
            <dependency>
                <groupId>com.vaadin</groupId>
                <artifactId>flow-server-production-mode</artifactId>
            </dependency>
        </dependencies>

        <build>
            <plugins>
                <plugin>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-maven-plugin</artifactId>
                    <configuration>
                        <jvmArguments>-Dvaadin.productionMode</jvmArguments>
                    </configuration>
                </plugin>
                <plugin>
                    <groupId>com.vaadin</groupId>
                    <artifactId>vaadin-maven-plugin</artifactId>
                    <version>${vaadin.version}</version>
                    <executions>
                        <execution>
                            <goals>
                                <goal>build-frontend</goal>
                            </goals>
                            <phase>compile</phase>
                        </execution>
                    </executions>
                </plugin>
            </plugins>
        </build>
    </profile>

    <profile>
        <id>integration-tests</id>
        <build>
            <plugins>
                <plugin>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-maven-plugin</artifactId>
                    <executions>
                        <execution>
                            <id>start-spring-boot</id>
                            <phase>pre-integration-test</phase>
                            <goals>
                                <goal>start</goal>
                            </goals>
                        </execution>
                        <execution>
                            <id>stop-spring-boot</id>
                            <phase>post-integration-test</phase>
                            <goals>
                                <goal>stop</goal>
                            </goals>
                        </execution>
                    </executions>
                </plugin>

                <!-- Runs the integration tests (*IT) after the server is started -->
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-failsafe-plugin</artifactId>
                    <executions>
                        <execution>
                            <goals>
                                <goal>integration-test</goal>
                                <goal>verify</goal>
                            </goals>
                        </execution>
                    </executions>
                    <configuration>
                        <trimStackTrace>false</trimStackTrace>
                        <enableAssertions>true</enableAssertions>
                        <systemPropertyVariables>
                            <!-- Pass location of downloaded webdrivers to the tests -->
                            <webdriver.chrome.driver>${webdriver.chrome.driver}</webdriver.chrome.driver>
                        </systemPropertyVariables>
                    </configuration>
                </plugin>

                <plugin>
                    <groupId>com.lazerycode.selenium</groupId>
                    <artifactId>driver-binary-downloader-maven-plugin</artifactId>
                    <version>1.0.17</version>
                    <configuration>
                        <onlyGetDriversForHostOperatingSystem>true
                        </onlyGetDriversForHostOperatingSystem>
                        <rootStandaloneServerDirectory>
                            ${project.basedir}/drivers/driver
                        </rootStandaloneServerDirectory>
                        <downloadedZipFileDirectory>
                            ${project.basedir}/drivers/driver_zips
                        </downloadedZipFileDirectory>
                        <customRepositoryMap>
                            ${project.basedir}/drivers.xml
                        </customRepositoryMap>
                    </configuration>
                    <executions>
                        <execution>
                            <!-- use phase "none" to skip download step -->
                            <phase>${drivers.downloader.phase}</phase>
                            <goals>
                                <goal>selenium</goal>
                            </goals>
                        </execution>
                    </executions>
                </plugin>
            </plugins>
        </build>
    </profile>

</profiles>

---------------------------------------------------------------------

Log FILE:
Apr 19, 2020 10:08:41 PM org.apache.catalina.startup.HostConfig deployWAR
INFO: Deploying web application archive /data/srs-voms/webapps/srs.war
Apr 19, 2020 10:08:41 PM org.apache.catalina.loader.WebappClassLoaderBase validateJarFile
INFO: validateJarFile(/data/srs-voms/webapps/srs/WEB-INF/lib/javax.servlet-api-3.1.0.jar) - jar not loaded. See Servlet Spec 3.0, section 10.7.2. Offending class: javax/servlet/Servlet.class
Apr 19, 2020 10:08:45 PM org.apache.catalina.startup.TldConfig execute
INFO: At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
Apr 19, 2020 10:08:45 PM org.apache.catalina.core.StandardContext startInternal
SEVERE: Error during ServletContainerInitializer processing
javax.servlet.ServletException: Servlet 3.1+ is required
at com.vaadin.flow.server.startup.ServletVerifier.verifyServletVersion(ServletVerifier.java:53)
at com.vaadin.flow.server.startup.ServletVerifier.process(ServletVerifier.java:36)
at com.vaadin.flow.server.startup.ClassLoaderAwareServletContainerInitializer.onStartup(ClassLoaderAwareServletContainerInitializer.java:76)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5669)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:1018)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:994)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:652)
at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:1127)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:593)
at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1815)
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:498)
at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:301)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)
at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)
at org.apache.catalina.manager.ManagerServlet.check(ManagerServlet.java:1514)
at org.apache.catalina.manager.HTMLManagerServlet.upload(HTMLManagerServlet.java:278)
at org.apache.catalina.manager.HTMLManagerServlet.doPost(HTMLManagerServlet.java:198)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:650)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.filters.CsrfPreventionFilter.doFilter(CsrfPreventionFilter.java:136)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:109)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:110)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:603)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:1025)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:445)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1137)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.NoSuchMethodException: javax.servlet.http.HttpServletResponse.setContentLengthLong(long)
at java.lang.Class.getMethod(Class.java:1786)
at com.vaadin.flow.server.startup.ServletVerifier.verifyServletVersion(ServletVerifier.java:48)
… 48 more

Apr 19, 2020 10:08:45 PM org.apache.catalina.core.StandardContext startInternal
SEVERE: Context
[/srs] startup failed due to previous errors
Apr 19, 2020 10:08:45 PM org.apache.catalina.loader.WebappClassLoaderBase clearReferencesThreads
SEVERE: The web application
[/srs] appears to have started a thread named [Abandoned connection cleanup thread]
but has failed to stop it. This is very likely to create a memory leak.
Apr 19, 2020 10:08:45 PM org.apache.catalina.startup.HostConfig deployWAR
INFO: Deployment of web application archive /data/srs-voms/webapps/srs.war has finished in 4,002 ms
Apr 19, 2020 10:09:24 PM org.apache.catalina.loader.WebappClassLoaderBase validateJarFile
INFO: validateJarFile(/data/srs-voms/webapps/srs/WEB-INF/lib/javax.servlet-api-3.1.0.jar) - jar not loaded. See Servlet Spec 3.0, section 10.7.2. Offending class: javax/servlet/Servlet.class
Apr 19, 2020 10:09:26 PM org.apache.catalina.startup.TldConfig execute
INFO: At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
Apr 19, 2020 10:09:26 PM org.apache.catalina.core.StandardContext startInternal
SEVERE: Error during ServletContainerInitializer processing
javax.servlet.ServletException: Servlet 3.1+ is required
at com.vaadin.flow.server.startup.ServletVerifier.verifyServletVersion(ServletVerifier.java:53)
at com.vaadin.flow.server.startup.ServletVerifier.process(ServletVerifier.java:36)
at com.vaadin.flow.server.startup.ClassLoaderAwareServletContainerInitializer.onStartup(ClassLoaderAwareServletContainerInitializer.java:76)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5669)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
at org.apache.catalina.manager.ManagerServlet.start(ManagerServlet.java:1320)
at org.apache.catalina.manager.HTMLManagerServlet.start(HTMLManagerServlet.java:683)
at org.apache.catalina.manager.HTMLManagerServlet.doPost(HTMLManagerServlet.java:209)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:650)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.filters.CsrfPreventionFilter.doFilter(CsrfPreventionFilter.java:136)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:109)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:110)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:603)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:1025)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:445)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1137)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.NoSuchMethodException: javax.servlet.http.HttpServletResponse.setContentLengthLong(long)
at java.lang.Class.getMethod(Class.java:1786)
at com.vaadin.flow.server.startup.ServletVerifier.verifyServletVersion(ServletVerifier.java:48)
… 35 more

Apr 19, 2020 10:09:26 PM org.apache.catalina.core.StandardContext startInternal
SEVERE: Context
[/srs] startup failed due to previous errors
Apr 19, 2020 10:09:26 PM org.apache.catalina.loader.WebappClassLoaderBase clearReferencesThreads
SEVERE: The web application
[/srs] appears to have started a thread named [Abandoned connection cleanup thread]
but has failed to stop it. This is very likely to create a memory leak.

Chris335 · April 20, 2020, 7:52am

Hi,

Vaadin 10- uses Servlet 3.1 API. Minimum required Tomcat version is 8.

Regards

ollit.1 · April 20, 2020, 9:36am

Generally, I’d recommend Tomcat 8.5 at least, since Tomcat 8.0 series maintenance has ended already.