异常启动筛选器struts2 java.lang.ClassNotFoundException:org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter_Struts2

异常启动筛选器struts2 java.lang.ClassNotFoundException:org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter

struts2

异常启动筛选器struts2 java.lang.ClassNotFoundException:org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter,struts2,Struts2,我刚开始学习struts2，当我试图部署到tomcat时，遇到了以下错误 Exception starting filter struts2 java.lang.ClassNotFoundException:org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter 我还浏览了其他几篇文章，但我无法解决这个问题，请帮助我。。多谢 /这是我正在使用的web.xml文件/ <?xml version="1.0"

我刚开始学习struts2，当我试图部署到tomcat时，遇到了以下错误

Exception starting filter struts2
java.lang.ClassNotFoundException:org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter

我还浏览了其他几篇文章，但我无法解决这个问题，请帮助我。。多谢

/这是我正在使用的web.xml文件/

<?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" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
<display-name>Struts2Start</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
<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>
</web-app>

<?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="default" extends="struts-default">
    <action name="getTutorial" class="com.javabrains.struts.action.TutorialAction">
      <result name="success">/success.jsp</result>
      <result name="error">/error.jsp</result>
    </action>
   </package>
</struts>

SEVERE: Exception starting filter struts2
java.lang.ClassNotFoundException:     org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1714)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1559)
at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:527)
at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:509)
at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:137)
at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:260)
at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:107)
at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4775)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5452)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:633)
at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:656)
at org.apache.catalina.startup.HostConfig$DeployDescriptor.run(HostConfig.java:1635)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)


Struts2启动
index.html
index.htm
index.jsp
default.html
default.htm
default.jsp
支柱2
org.apache.struts2.dispatcher.ng.filter.strutspreadexecutefilter
支柱2
/*

/Struts.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" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
<display-name>Struts2Start</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
<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>
</web-app>

<?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="default" extends="struts-default">
    <action name="getTutorial" class="com.javabrains.struts.action.TutorialAction">
      <result name="success">/success.jsp</result>
      <result name="error">/error.jsp</result>
    </action>
   </package>
</struts>

SEVERE: Exception starting filter struts2
java.lang.ClassNotFoundException:     org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1714)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1559)
at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:527)
at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:509)
at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:137)
at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:260)
at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:107)
at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4775)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5452)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:633)
at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:656)
at org.apache.catalina.startup.HostConfig$DeployDescriptor.run(HostConfig.java:1635)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)


/success.jsp
/error.jsp

/控制台/

<?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" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
<display-name>Struts2Start</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
<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>
</web-app>

<?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="default" extends="struts-default">
    <action name="getTutorial" class="com.javabrains.struts.action.TutorialAction">
      <result name="success">/success.jsp</result>
      <result name="error">/error.jsp</result>
    </action>
   </package>
</struts>

SEVERE: Exception starting filter struts2
java.lang.ClassNotFoundException:     org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1714)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1559)
at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:527)
at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:509)
at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:137)
at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:260)
at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:107)
at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4775)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5452)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:633)
at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:656)
at org.apache.catalina.startup.HostConfig$DeployDescriptor.run(HostConfig.java:1635)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

严重：启动过滤器struts2时出现异常
java.lang.ClassNotFoundException:org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter
位于org.apache.catalina.loader.WebappClassLoader.loadClass（WebappClassLoader.java:1714）
位于org.apache.catalina.loader.WebappClassLoader.loadClass（WebappClassLoader.java:1559）
位于org.apache.catalina.core.DefaultInstanceManager.loadClass（DefaultInstanceManager.java:527）
位于org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged（DefaultInstanceManager.java:509）
位于org.apache.catalina.core.DefaultInstanceManager.newInstance（DefaultInstanceManager.java:137）
位于org.apache.catalina.core.ApplicationFilterConfig.getFilter（ApplicationFilterConfig.java:260）
位于org.apache.catalina.core.ApplicationFilterConfig.（ApplicationFilterConfig.java:107）
位于org.apache.catalina.core.StandardContext.filterStart（StandardContext.java:4775）
位于org.apache.catalina.core.StandardContext.startInternal（StandardContext.java:5452）
位于org.apache.catalina.util.LifecycleBase.start（LifecycleBase.java:150）
位于org.apache.catalina.core.ContainerBase.addChildInternal（ContainerBase.java:901）
位于org.apache.catalina.core.ContainerBase.addChild（ContainerBase.java:877）
位于org.apache.catalina.core.StandardHost.addChild（StandardHost.java:633）
位于org.apache.catalina.startup.HostConfig.deployDescriptor（HostConfig.java:656）
位于org.apache.catalina.startup.HostConfig$DeployDescriptor.run（HostConfig.java:1635）
位于java.util.concurrent.Executors$RunnableAdapter.call（未知源）
位于java.util.concurrent.FutureTask.run（未知源）
位于java.util.concurrent.ThreadPoolExecutor.runWorker（未知源）
位于java.util.concurrent.ThreadPoolExecutor$Worker.run（未知源）
位于java.lang.Thread.run（未知源）

我也有同样的问题。我可以通过添加更多的jar文件来解决这个问题。您必须至少具有以下jar文件：

commons-fileupload-X.X.X.jar

commons-io-X.X.jar

commons-lang-X.X.jar

commons-logging-X.X.X.jar

commons-logging-api-X.X.jar

commons-lang3-X.X.jar

freemaker-X.X.X.jar

javassist-X.X.X.GA.jar

ognl-X.X.X.jar

struts2-core-X.X.X.jar

xwork-core-X.X.X.jar

使用以下罐子并移除所有其他罐子

commons-fileupload-1.3.jar
commons-io-2.0.1.jar
commons-lang3-3.1.jar
commons-logging-1.1.3.jar
freemarker-2.3.19.jar
javassist-3.11.0.GA.jar
ognl-3.0.6.jar
struts2-core-2.3.15.1.jar
xwork-core-2.3.15.1.jar

我发现我的问题是忘记导出用户定义的库，在本例中是struts库。您可以通过以下方式通过Eclipse导出库：

转到标记选项卡（如果看不到，请执行Windows>显示视图>标记）

展开“类路径依赖验证程序消息”

右键单击“将不会导出或发布类路径条目org.eclipse.jdt.USER_LIBRARY/struts2。可能会导致运行时ClassNotFoundException。”

单击“快速修复”

选择“将关联的原始类路径条目标记为发布/导出依赖项。”

单击“完成”

可能有一些原因导致此错误。原因之一可能是您使用的jar版本没有所需的类。检查

struts2-core-X.X.X.jar

，确保它包含

org.apache.struts2.dispatcher.ng.filter

包下的

StrutsPrepareAndExecuteFilter

类

commons-fileupload-1.2.2.jar commons-io-2.0.1.jar commons-lang-2.5.jar commons-logging-1.1.jar commons-logging-api-1.1.jar freemarker-2.3.18.jar ognl-3.0.4.jar struts2-core-2.3.1.2.jar xwork-core-2.3.1.2.jar