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我作为 .NET 开发人员已经 8 年多了,我被安排在一个 Java 项目上,我正在努力跟上进度。我正在使用 Eclipse EE 3.5.1、JBoss 5.1 和 Struts 2.1.8.1(所有最新版本为 AFAIK)。

我正在尝试使用简单的登录名和主页创建一个新项目。但是当我从 Eclipse 运行我的项目时,我收到以下构建错误:

Exception starting filter struts2    
java.lang.ClassNotFoundException: org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter  
    at java.net.URLClassLoader$1.run(Unknown Source)  
    at java.security.AccessController.doPrivileged(Native Method)  
    at java.net.URLClassLoader.findClass(Unknown Source)  
    at java.lang.ClassLoader.loadClass(Unknown Source)  
    at java.lang.ClassLoader.loadClass(Unknown Source)  
    at org.jboss.web.tomcat.service.TomcatInjectionContainer.newInstance(TomcatInjectionContainer.java:262)  
    at org.jboss.web.tomcat.service.TomcatInjectionContainer.newInstance(TomcatInjectionContainer.java:256)  
    at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:220)  
    at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:332)  
    at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:90)  
    at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:3783)  
    at org.apache.catalina.core.StandardContext.start(StandardContext.java:4413)  
    at org.jboss.web.tomcat.service.deployers.TomcatDeployment.performDeployInternal(TomcatDeployment.java:310)  
    at org.jboss.web.tomcat.service.deployers.TomcatDeployment.performDeploy(TomcatDeployment.java:142)  
    at org.jboss.web.deployers.AbstractWarDeployment.start(AbstractWarDeployment.java:461)  
    at org.jboss.web.deployers.WebModule.startModule(WebModule.java:118)  
    at org.jboss.web.deployers.WebModule.start(WebModule.java:97)  
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)  
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)  
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)  
    at java.lang.reflect.Method.invoke(Unknown Source)  
    at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:157)  
    at org.jboss.mx.server.Invocation.dispatch(Invocation.java:96)  
    at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)  
    at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)  
    at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:668)  
    at org.jboss.system.microcontainer.ServiceProxy.invoke(ServiceProxy.java:206)  
    at $Proxy38.start(Unknown Source)  
    at org.jboss.system.microcontainer.StartStopLifecycleAction.installAction(StartStopLifecycleAction.java:42)  
    at org.jboss.system.microcontainer.StartStopLifecycleAction.installAction(StartStopLifecycleAction.java:37)  
    at org.jboss.dependency.plugins.action.SimpleControllerContextAction.simpleInstallAction(SimpleControllerContextAction.java:62)  
    at org.jboss.dependency.plugins.action.AccessControllerContextAction.install(AccessControllerContextAction.java:71)  
    at org.jboss.dependency.plugins.AbstractControllerContextActions.install(AbstractControllerContextActions.java:51)  
    at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348)  
    at org.jboss.system.microcontainer.ServiceControllerContext.install(ServiceControllerContext.java:286)  
    at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1631)  
    at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:934)  
    at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1082)  
    at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:984)  
    at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:822)  
    at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:553)  
    at org.jboss.system.ServiceController.doChange(ServiceController.java:688)  
    at org.jboss.system.ServiceController.start(ServiceController.java:460)  
    at org.jboss.system.deployers.ServiceDeployer.start(ServiceDeployer.java:163)  
    at org.jboss.system.deployers.ServiceDeployer.deploy(ServiceDeployer.java:99) 
    at org.jboss.system.deployers.ServiceDeployer.deploy(ServiceDeployer.java:46)  
    at org.jboss.deployers.spi.deployer.helpers.AbstractSimpleRealDeployer.internalDeploy(AbstractSimpleRealDeployer.java:62)  
    at org.jboss.deployers.spi.deployer.helpers.AbstractRealDeployer.deploy(AbstractRealDeployer.java:50)  
    at org.jboss.deployers.plugins.deployers.DeployerWrapper.deploy(DeployerWrapper.java:171)  
    at org.jboss.deployers.plugins.deployers.DeployersImpl.doDeploy(DeployersImpl.java:1439)  
    at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1157)  
    at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1178)  
    at org.jboss.deployers.plugins.deployers.DeployersImpl.install(DeployersImpl.java:1098)  
    at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348)  
    at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1631)  
    at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:934)  
    at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1082)  
    at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:984)  
    at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:822)  
    at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:553)  
    at org.jboss.deployers.plugins.deployers.DeployersImpl.process(DeployersImpl.java:781)  
    at org.jboss.deployers.plugins.main.MainDeployerImpl.process(MainDeployerImpl.java:702)  
    at org.jboss.system.server.profileservice.repository.MainDeployerAdapter.process(MainDeployerAdapter.java:117)  
    at org.jboss.system.server.profileservice.repository.ProfileDeployAction.install(ProfileDeployAction.java:70)  
    at org.jboss.system.server.profileservice.repository.AbstractProfileAction.install(AbstractProfileAction.java:53)  
    at org.jboss.system.server.profileservice.repository.AbstractProfileService.install(AbstractProfileService.java:361)  
    at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348)  
    at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1631)  
    at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:934)  
    at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1082)  
    at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:984)  
    at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:822)  
    at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:553)  
    at org.jboss.system.server.profileservice.repository.AbstractProfileService.activateProfile(AbstractProfileService.java:306)  
    at org.jboss.system.server.profileservice.ProfileServiceBootstrap.start(ProfileServiceBootstrap.java:271)  
    at org.jboss.bootstrap.AbstractServerImpl.start(AbstractServerImpl.java:461)  
    at org.jboss.Main.boot(Main.java:221)  
    at org.jboss.Main$1.run(Main.java:556)  
    at java.lang.Thread.run(Unknown Source)  

这是我的项目结构:

  • /src/struts.xml
  • /src/struts2demo/login/action/Login.java
  • /WebContent/META-INF/MANIFEST.MF
  • /WebContent/WEB-INF/web.xml
  • /WebContent/home.jsp
  • /WebContent/login.jsp

这是我的配置文件:web.xml:

<?xml version="1.0" encoding="UTF-8"?>  
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
    xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"  
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"  
    id="WebApp_ID" version="2.5">  
    <display-name>struts2demo</display-name>  
    <filter>  
        <filter-name>struts2</filter-name>  
        <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>  
    </filter>  
    <filter-mapping>  
        <filter-name>struts2</filter-name>  
        <url-pattern>/*</url-pattern>  
    </filter-mapping>  
    <welcome-file-list>  
        <welcome-file>login.jsp</welcome-file>  
    </welcome-file-list>  
</web-app>  

注意:当我的过滤器类是 org.apache.struts2.dispatcher.FilterDispatcher 时,我会收到类似的错误。

struts.xml:

<?xml version="1.0" encoding="UTF-8" ?>  
<!DOCTYPE struts PUBLIC  
    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"  
    "http://struts.apache.org/dtds/struts-2.0.dtd">   
<struts>  
    <package name="struts2demo" extends="struts-default">  
        <action name="Login"  
            class="struts2demo.login.action.Login">  
            <result>/home.jsp</result>  
            <result name="error">/login.jsp</result>  
        </action>  
    </package>  
</struts>  

.类路径:

4

3 回答 3

2

听起来您的类路径中可能没有 Struts 2 JAR 文件。转到您的项目属性 -> Java Build Path -> Libraries 并确保必要的 Struts 2 JAR 文件都列在 Web App Libraries 下。

于 2010-01-04T20:13:19.030 回答
0

您能否将您的web.xmlstruts.xml文件与本教程进行比较(尽管它使用 apache-tomcat 6 服务器而不是 JBoss)

即使评论中报告了此错误,本教程也确实有效。


我确实在这个Struts-2.1.8.tgz 中找到了你的类(参见docjar,如果在 Struts 下载中引用了 struts 下载中的相关 jar,这应该没问题。

WEB-INF
  lib
    struts-core2.1.8.jar
于 2010-01-04T20:09:01.143 回答
0

好的....我能够用一些简单的东西来调试重大错误,这对我来说很有意义。我在带有Tomcat 7的Eclipse Helios上使用tomcat插件。对不起,如果这篇文章太明显了......我对此很陌生。

错误以及我如何解决它们:- 1. 严重:异常启动过滤器 struts2 java.lang.ClassNotFoundException: org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter

解决方案:我从 struts2 展示示例应用程序中复制了所有 jar。可在此处获得->(必须删除,因为 stackoverflow dint 允许我发布多个链接)我将那场战争的 web-inf/lib 中的所有 jar 复制到我的 eclipse 项目的 web-inf/lib 中。仍然出现该错误....在检查时,我看到我以前的版本正在使用同一台服务器,我通过删除该服务器并在 eclipse 中重新创建删除了该服务器....确保它没有引用我以前版本的库我当前的库通过检查我的项目的运行时配置并在我的 web-inf/lib 之外创建了一个新的 lib 目录并将其设置在构建路径中。解决了那个特定的错误。

  1. 然后,出现了一些弹簧错误,例如找不到 SpringObjectFactory 之类的东西

解决方案:从我的库中删除了所有的 spring jar,例如 spring-beans、spring struts 插件等。解决了那个特定的错误。

  1. 然后是 xwork2 错误 -> com.opensymphony.xwork2.inject.DependencyException: 和一些 java 运行时异常

解决方案:您需要在 web.xml 中提及您的操作类包。感谢邮件存档...我可以解决它。链接 -> http://mail-archives.apache.org/mod_mbox/struts-user/200908.mbox/%3CBLU142-W31D8183CCB7D6CABA09BFDAE080@phx.gbl%3E 您需要在 web.xml 中像这样提及您的操作包: -

<filter> <filter-name>struts2</filter-name> <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class> <init-param> <param-name>actionPackages</param-name> <param-value>myapp.actions</param-value> </init-param>
</filter>

就是这样。它现在工作。

于 2011-01-30T11:54:46.823 回答