Struts2 访问不存在的Action报Unable to instantiate Action

Question

请问为什么struts2在访问不存在的Action,如：http://localhost:8080/Testweb/abc,
Testweb是我的项目名，abc是随便乱写的，然后报：
Unable to instantiate Action, com.shutao.test.action.abcAction,  defined for 'abc' in namespace '/'com.shutao.test.action.abcAction
com.opensymphony.xwork2.DefaultActionInvocation.createAction(DefaultActionInvocation.java:307)
com.opensymphony.xwork2.DefaultActionInvocation.init(DefaultActionInvocation.java:388)
com.opensymphony.xwork2.DefaultActionProxy.prepare(DefaultActionProxy.java:187)
org.apache.struts2.impl.StrutsActionProxy.prepare(StrutsActionProxy.java:61)
org.apache.struts2.impl.StrutsActionProxyFactory.createActionProxy(StrutsActionProxyFactory.java:39)
com.opensymphony.xwork2.DefaultActionProxyFactory.createActionProxy(DefaultActionProxyFactory.java:47)
org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:478)
org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:395)
org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)root causejava.lang.ClassNotFoundException: com.shutao.test.action.abcAction
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1387)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1233)
com.opensymphony.xwork2.util.ClassLoaderUtil.loadClass(ClassLoaderUtil.java:146)
com.opensymphony.xwork2.ObjectFactory.getClassInstance(ObjectFactory.java:96)
com.opensymphony.xwork2.spring.SpringObjectFactory.getClassInstance(SpringObjectFactory.java:212)
com.opensymphony.xwork2.spring.SpringObjectFactory.buildBean(SpringObjectFactory.java:132)
com.opensymphony.xwork2.ObjectFactory.buildBean(ObjectFactory.java:139)
com.opensymphony.xwork2.ObjectFactory.buildAction(ObjectFactory.java:109)
com.opensymphony.xwork2.DefaultActionInvocation.createAction(DefaultActionInvocation.java:288)
com.opensymphony.xwork2.DefaultActionInvocation.init(DefaultActionInvocation.java:388)
com.opensymphony.xwork2.DefaultActionProxy.prepare(DefaultActionProxy.java:187)
org.apache.struts2.impl.StrutsActionProxy.prepare(StrutsActionProxy.java:61)
org.apache.struts2.impl.StrutsActionProxyFactory.createActionProxy(StrutsActionProxyFactory.java:39)
com.opensymphony.xwork2.DefaultActionProxyFactory.createActionProxy(DefaultActionProxyFactory.java:47)
org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:478)
org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:395)
org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)请问为什么不是报404,是哪里出问题。
麻烦帮下新手，谢谢！

Answer 1

http://localhost:8080/Testweb/abc.action   -- 这个应该报404

Answer 2

不是呀，也是包同样错误，我的strutx.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>
<constant name="struts.enable.SlashesInActionNames " value="true" />
<constant name="struts.i18n.encoding" value="UTF-8"/>
<constant name="struts.devModel" value="true"/>
<constant name="locale" value="zh_CN"/>
<constant name="struts.objectFactory" value="spring"/><package name="TestSSH" namespace="/" extends="struts-default"> <default-action-ref name="notExist"></default-action-ref>

<action name="notExist">  
           <result>/index.jsp</result>  
       </action> 
       
<action name="*-*" class="com.shutao.test.action.{1}Action" method="{2}">
<result name="success">
/commonPages/success.jsp
</result>
<result name="execute">
/commonPages/execute.jsp
</result>
<result name="error">
/errorPages/error.jsp
</result>
</action> 

</package>
</struts>

Answer 3

java.lang.ClassNotFoundException: com.shutao.test.action.abcAction
类没找到

Answer 4

为什么struts2一定要去找这个类？该action不存在为什么不报404？

Answer 5

改成<action name="*-*Action" class="com.shutao.test.action.{1}Action" method="{2}">试试

Answer 6

applicationContext.xml 文件要与web.xml文件配置的位置对应，像下面的配置，applicationContext.xml 文件要放在WEB-INF下面<context-param>
  <param-name>contextConfigLocation</param-name>
  <param-value>/WEB-INF/applicationContext*.xml</param-value>
 </context-param>