java.lang.NoClassDefFoundError: javax/servlet/ServletContext

java.lang.NoClassDefFoundError: javax/servlet/ServletContext

提问by user1548875

I just upgraded to IntelliJ 15.0 from 14.1 (I was in a hurry and forgot to save the previous plug state for 14.1) and I'm attempting to configure general run/debug configuration settings with Spring Boot in Intellij using Gradle. In the configuration tab I have added 1) the Main class, 2) JRE, and 3) class path of module in IntelliJ. I use Spring Boot as the selected configuration. However, when select Run I get this error:

我刚刚从 14.1 升级到 IntelliJ 15.0（我很匆忙，忘记为 14.1 保存以前的插件状态），我正在尝试使用 Gradle 在 Intellij 中使用 Spring Boot 配置常规运行/调试配置设置。在配置选项卡中，我添加了 1) Main 类，2) JRE 和 3) IntelliJ 中模块的类路径。我使用 Spring Boot 作为选定的配置。但是，选择运行时，我收到此错误：

2015-11-07 22:00:21.457 ERROR 10632 --- [main] 
o.s.boot.SpringApplication : Application startup failed
java.lang.NoClassDefFoundError: javax/servlet/ServletContext    
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Class.java:2701)
at java.lang.Class.getDeclaredMethods(Class.java:1975)
at org.springframework.core.type.StandardAnnotationMetadata.getAnnotatedMethods(StandardAnnotationMetadata.java:140)
at org.springframework.context.annotation.ConfigurationClassParser.doProcessConfigurationClass(ConfigurationClassParser.java:289) 
at org.springframework.context.annotation.ConfigurationClassParser.processConfigurationClass(ConfigurationClassParser.java:229) 
at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:196)
at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:165)
at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:306)
at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:239)
at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:254)
at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:94)
at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:94)
at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:606)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:462)
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.awana.mozo.club.Application.main(Application.java:37)
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 com.intellij.rt.execution.application.AppMain.main(AppMain.java:144) Caused by: java.lang.ClassNotFoundException: javax.servlet.ServletContext
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
2015-11-07 22:00:21.457  INFO 10632 --- [           main]    s.c.a.AnnotationConfigApplicationContext : Closing   org.springframework.context.annotation.AnnotationConfigApplicationContext@3788f3    : startup date [Sat Nov 07 22:00:21 CST 2015]; root of context hierarchy
2015-11-07 22:00:21.458  WARN 10632 --- [           main]   s.c.a.AnnotationConfigApplicationContext : Exception thrown from    ApplicationListener handling ContextClosedEvent
java.lang.IllegalStateException: ApplicationEventMulticaster not initialized - call 'refresh' before multicasting events via the context: org.springframework.context.annotation.AnnotationConfigApplicationContext@3788f3: startup date [Sat Nov 07 22:00:21 CST 2015]; root of context hierarchy
at  org.springframework.context.support.AbstractApplicationContext.getApplicationEventMulticaster(AbstractApplicationContext.java:344)
at   org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:331)
at org.springframework.context.support.AbstractApplicationContext.doClose(AbstractApplicationContext.java:869)
at org.springframework.context.support.AbstractApplicationContext.close(AbstractApplicationContext.java:836)
at  org.springframework.boot.SpringApplication.run(SpringApplication.java:342)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:957)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:946)
at org.awana.mozo.club.Application.main(Application.java:37)
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 com.intellij.rt.execution.application.AppMain.main(AppMain.java:144)
2015-11-07 22:00:21.459  WARN 10632 --- [           main]  s.c.a.AnnotationConfigApplicationContext : Exception thrown from LifecycleProcessor on context close
java.lang.IllegalStateException: LifecycleProcessor not initialized - call 'refresh' before invoking lifecycle methods via the context:  org.springframework.context.annotation.AnnotationConfigApplicationContext@3788f3: startup date [Sat Nov 07 22:00:21 CST 2015]; root of context hierarchy
at   org.springframework.context.support.AbstractApplicationContext.getLifecycleProcessor(AbstractApplicationContext.java:357)
at org.springframework.context.support.AbstractApplicationContext.doClose(AbstractApplicationContext.java:877)
at org.springframework.context.support.AbstractApplicationContext.close(AbstractApplicationContext.java:836)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:342)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:957)
at  org.springframework.boot.SpringApplication.run(SpringApplication.java:946)
at org.awana.mozo.club.Application.main(Application.java:37)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at  sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at  sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.jav    a:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:144)
Exception in thread "main" java.lang.NoClassDefFoundError: javax/servlet  /ServletContext
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Class.java:2701)
at java.lang.Class.getDeclaredMethods(Class.java:1975)
at   org.springframework.core.type.StandardAnnotationMetadata.getAnnotatedMethods(Sta    ndardAnnotationMetadata.java:140)
at org.springframework.context.annotation.ConfigurationClassParser.doProcessConfigu    rationClass(ConfigurationClassParser.java:289)
at org.springframework.context.annotation.ConfigurationClassParser.processConfigura    tionClass(ConfigurationClassParser.java:229)
at org.springframework.context.annotation.ConfigurationClassParser.parse(Configurat    ionClassParser.java:196)
at org.springframework.context.annotation.ConfigurationClassParser.parse(Configurat    ionClassParser.java:165)
at org.springframework.context.annotation.ConfigurationClassPostProcessor.processCo    nfigBeanDefinitions(ConfigurationClassPostProcessor.java:306)            
at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProce    ssBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:239)
at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBean    DefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:254)
at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBean    FactoryPostProcessors(PostProcessorRegistrationDelegate.java:94)
at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactory    PostProcessors(AbstractApplicationContext.java:606)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:462)
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.awana.mozo.club.Application.main(Application.java:37)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.jav    a:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:144) Caused by: java.lang.ClassNotFoundException: javax.servlet.ServletContext
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
Process finished with exit code 1

采纳答案by user1548875

OK here is what I had to do to solve this specific issue: IntelliJ needed to have a definition for Gradle Task called bootRun within the Debug/Run Configuration. This allows me to now run back-end code or debug back-end code updates in IntelliJ. 2) Next I had to restructure my IntelliJ directories because IntelliJ 15 had installed both a parent and a child JRE folder which is incorrect so therefore IntelliJ displayed and exception stating that it could not find the a) java.exec nor the b) jvm.cfg files under it's JRE/Lib sub-directory. Once I fixed these two issues both builds and debugging seemed to work for Java Spring back end. I followed up with IntelliJ about the quirky JRE installation.

好的，这是我为解决这个特定问题而必须做的：IntelliJ 需要在调试/运行配置中为 Gradle 任务定义一个名为 bootRun 的定义。这使我现在可以在 IntelliJ 中运行后端代码或调试后端代码更新。2）接下来，我不得不重组我的 IntelliJ 目录，因为 IntelliJ 15 安装了不正确的父级和子级 JRE 文件夹，因此 IntelliJ 显示和异常说明它找不到 a) java.exec 或 b) jvm。其 JRE/Lib 子目录下的 .cfg 文件。一旦我解决了这两个问题，构建和调试似乎都适用于 Java Spring 后端。我跟进了 IntelliJ 关于古怪的 JRE 安装。

回答by arcseldon

Had same problem. Seemed specific to trying to run a spring boot web app via IntelliJ 15.x spring bootrun configuration. Since I was using mavenI instead created a mavenrun configuration specifying the command line actionas spring-boot:run- this works both in run and debug modes. Screenshot attached.

有同样的问题。似乎特定于尝试通过 IntelliJ 15.xspring boot运行配置运行 Spring Boot Web 应用程序。由于我使用的是maven我创建了一个maven运行配置，指定command line actionas spring-boot:run- 这在运行和调试模式下都有效。附上截图。

回答by Vahap Gencdal

I think you need to add valid javax-servlet and servlet-api version to your pom.xml. an example below that will solve your problem I think

我认为您需要在 pom.xml 中添加有效的 javax-servlet 和 servlet-api 版本。下面的一个例子可以解决你的问题，我认为

    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>servlet-api</artifactId>
        <version>3.0-alpha-1</version>
    </dependency>
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>jstl</artifactId>
       <version>1.2</version>
    </dependency>