java.lang.NoClassDefFoundError:HttpServletRequest [英] java.lang.NoClassDefFoundError: HttpServletRequest

问题描述

我可能做过一些非常愚蠢的事情.我在玩目录，什么不在目录中，现在我的tomcat服务器无法在eclipse上启动我的动态Web项目.请帮忙.我不知道这是否与目录有关，但是当我尝试在服务器中运行项目时却出现了错误.

I might have done something really stupid. I was playing around with directories and what not, and now my tomcat server won't start my dynamic web project on eclipse. Please help. I don't know if this has something to do with the directory or not, but it's giving an error when I try to run my project in the server.

Caused by: java.lang.NoClassDefFoundError: HttpServletRequest
    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.apache.catalina.util.Introspection.getDeclaredMethods(Introspection.java:127)
    at org.apache.catalina.startup.WebAnnotationSet.loadMethodsAnnotation(WebAnnotationSet.java:273)
    at org.apache.catalina.startup.WebAnnotationSet.loadApplicationServletAnnotations(WebAnnotationSet.java:133)
    at org.apache.catalina.startup.WebAnnotationSet.loadApplicationAnnotations(WebAnnotationSet.java:65)
    at org.apache.catalina.startup.ContextConfig.applicationAnnotationsConfig(ContextConfig.java:334)
    at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:774)
    at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:305)
    at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:95)
    at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5154)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    ... 6 more
Caused by: java.lang.ClassNotFoundException: HttpServletRequest
    at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1333)
    at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1167)
    ... 20 more

推荐答案

您的Tomcat因以下原因而崩溃

Your Tomcat crashes due to

Caused by: java.lang.ClassNotFoundException: HttpServletRequest

请检查类路径中是否有 javax.servlet-api 库.

Please check if you have javax.servlet-api library in your classpath.

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