Spring MVC 使用 tomcat、maven 和 intelliJ 错误 [英] Spring MVC using tomcat, maven and intelliJ Error

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问题描述

我知道这个问题被问了好几次，但没有一个解决方案可以帮助我.这是项目

artifact

解决方案

Tomcat 10 适用于 Servlet 5.0，它与早期版本的 Servlet 规范不向后兼容.

那是因为所有 Java 类型都从包 javax.servlet 移动到包 jakarta.servlet.

不要使用Tomcat 10，使用Tomcat 9.

如果您想升级到 Tomcat 10 或更高版本，请参阅 Apache Tomcat® - 迁移指南 -Tomcat 10.0.x.

请参阅 Spring 框架问题 #25354 (支持用于 Jakarta EE 9(jakarta. 命名空间中的注释和接口))* 了解 Spring 对 Servlet 5.0/Tomcat 10 的支持状态.

I know this question is asked several times, but none of the solutions could help me out. Here's link to project project file.
Hoping anyone could help me out JDK-11

Error is class cast exception cannot figure out where specifically error lies and why? even referenced several sites still the error persist stack trace is attached for more details uploaded project to above mentioned link

Tomcat LocalHost log

17-Sep-2020 00:14:07.543 INFO [RMI TCP Connection(3)-127.0.0.1] org.apache.catalina.core.ApplicationContext.log Marking servlet [dispatcher] as unavailable
17-Sep-2020 00:14:07.543 SEVERE [RMI TCP Connection(3)-127.0.0.1] org.apache.catalina.core.StandardContext.loadOnStartup Servlet [dispatcher] in web application [/springMVC_war_exploded] threw load() exception
    java.lang.ClassCastException: class org.springframework.web.servlet.DispatcherServlet cannot be cast to class jakarta.servlet.Servlet (org.springframework.web.servlet.DispatcherServlet is in unnamed module of loader org.apache.catalina.loader.ParallelWebappClassLoader @2bc757; jakarta.servlet.Servlet is in unnamed module of loader java.net.URLClassLoader @478190fc)
        at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1043)
        at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:984)
        at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4813)
        at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5122)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
        at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:717)
        at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:690)
        at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:705)
        at org.apache.catalina.startup.HostConfig.manageApp(HostConfig.java:1727)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.base/java.lang.reflect.Method.invoke(Method.java:566)
        at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:288)
        at java.management/com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:809)
        at java.management/com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)
        at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:456)
        at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:405)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.base/java.lang.reflect.Method.invoke(Method.java:566)
        at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:288)
        at java.management/com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:809)
        at java.management/com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)
        at java.management/com.sun.jmx.remote.security.MBeanServerAccessController.invoke(MBeanServerAccessController.java:468)
        at java.management.rmi/javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1466)
        at java.management.rmi/javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(RMIConnectionImpl.java:1307)
        at java.base/java.security.AccessController.doPrivileged(Native Method)
        at java.management.rmi/javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(RMIConnectionImpl.java:1406)
        at java.management.rmi/javax.management.remote.rmi.RMIConnectionImpl.invoke(RMIConnectionImpl.java:827)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.base/java.lang.reflect.Method.invoke(Method.java:566)
        at java.rmi/sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:359)
        at java.rmi/sun.rmi.transport.Transport$1.run(Transport.java:200)
        at java.rmi/sun.rmi.transport.Transport$1.run(Transport.java:197)
        at java.base/java.security.AccessController.doPrivileged(Native Method)
        at java.rmi/sun.rmi.transport.Transport.serviceCall(Transport.java:196)
        at java.rmi/sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:562)
        at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:796)
        at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:677)
        at java.base/java.security.AccessController.doPrivileged(Native Method)
        at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:676)
        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
        at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
        at java.base/java.lang.Thread.run(Thread.java:834)<br/>

pom.xml

 <?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>org.example</groupId>
    <artifactId>springMVC</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>war</packaging>
    <properties>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
    </properties>
    <dependencies>
<!--        Spring-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>5.2.8.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>5.2.8.RELEASE</version>
        </dependency>

<!--        Servlet-->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>servlet-api</artifactId>
            <version>2.5</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>javax.servlet.jsp</groupId>
            <artifactId>jsp-api</artifactId>
            <version>2.2</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>

<!--        maven-->
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.8.1</version>
            </plugin>
        </plugins>
    </build>


</project>

Tomcat config

artifact

解决方案

Tomcat 10 is for Servlet 5.0, which is not backwards compatible with earlier versions of the Servlet specification.

That is because all the Java types were moved from package javax.servlet to package jakarta.servlet.

Don't use Tomcat 10, use Tomcat 9.

If you want to upgrade to Tomcat 10 or later, see Apache Tomcat® - Migration Guide - Tomcat 10.0.x.

See Spring Framework issue #25354 (Support for Jakarta EE 9 (annotations and interfaces in jakarta. namespace))* for status of Spring support for Servlet 5.0 / Tomcat 10.

这篇关于Spring MVC 使用 tomcat、maven 和 intelliJ 错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！

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