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

2012-11-09 03:02:20 2.5k 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

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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 cause



java.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！

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智学无忧-老曹 2013-11-13

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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>

huimiezu 2012-11-09

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

linshutao 2012-11-09

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是通配符的关系吧，但不知道怎么改~~

linshutao 2012-11-09

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引用 3 楼 huimiezu 的回复:

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

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

huimiezu 2012-11-09

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

linshutao 2012-11-09

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引用 1 楼 liangtu33 的回复:

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

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>

liangtu 2012-11-09

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

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

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