ssh求助！！

Question

ssh2整合，功能有登陆注册，前几天程
序还能运行，但是今天登陆或注册就出现这个错误！！！
  网上很多方法：导入缺少的包、配置文件什么的都试过了！但是都没用！
Unable to instantiate Action, userAction,  defined for 'login' in namespace '/'userAction
求助啊！困扰了我好久啊！！！

Answer 1

web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" 
xmlns="http://java.sun.com/xml/ns/javaee" 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
  <display-name></display-name>
   <context-param>
  <param-name>contextConfigLocation</param-name>
  <param-value>classpath:applicationContext-*.xml</param-value>
 </context-param>
 <listener>
  <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
 </listener>
  <welcome-file-list>
    <welcome-file>index.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>
-----------------------------------------------application.xml<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd">
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver">
</property>
<property name="url" value="jdbc:mysql://localhost:3306/ssh2">
</property> <property name="username" value="root"></property>
<property name="password" value=""></property>
</bean>
<bean id="sessionFactory"
class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="dataSource">
<ref bean="dataSource" />
</property>
<property name="hibernateProperties">
<props>
<!-- 数据库方言 -->
<prop key="hibernate.dialect">
org.hibernate.dialect.MySQLDialect
</prop>
<!-- 数据库方言 -->
<prop key="hibernate.dialect">
org.hibernate.dialect.MySQLDialect   
                </prop>
<!-- 显示Hibernate持久化操作所生成的SQL语句 -->
<prop key="hibernate.show_sql">true</prop>
<!-- 将SQL脚本进行格式化后再输出 -->
<prop key="hibernate.format_sql">true</prop>
</props>
</property>
   
<property name="mappingResources">
<list>
<value>com/duyuan/beans/Users.hbm.xml</value>
</list>
</property>
</bean>
<!-- Users -->
<bean id="usersDAOImpl" class="com.duyuan.dao.impl.UsersDAOImpl">
<property name="sessionFactory">
<ref bean="sessionFactory" />
</property>
</bean>
<bean id="usersServiceImpl" class="com.duyuan.service.impl.UsersServiceImpl">
<property name="usersDAOImpl">
<ref local="usersDAOImpl" />
</property>
</bean>
<bean id="userAction" class="com.duyuan.action.UserAction">
<property name="usersService">
<ref local="usersServiceImpl" />
</property>
</bean>
    
</beans>
-----------------------------------------------
struts.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd">
<struts>
     <constant name="struts.objectFactory" value="spring"></constant>
   <include file="struts-default.xml"></include>
   <package name="com.duyuan.action" extends="struts-default" namespace="/">
   <!-- Users -->
      <action name="login" class="userAction" method="login">
         <result name="success">main.jsp</result>
         <result name="error">admin_index.jsp</result>
      </action>
       <action name="register" class="userAction" method="register">
         <result name="success">admin_index.jsp</result>
         <result name="error">register.jsp</result>
      </action>
       <action name="update" class="userAction" method="update">
         <result name="success">admin_index.jsp</result>
         <result name="error">admin_update.jsp</result>
      </action>
      </package>
</struts>    

Answer 2

HTTP Status 500 - --------------------------------------------------------------------------------type Exception reportmessage description The server encountered an internal error () that prevented it from fulfilling this request.exception Unable to instantiate Action, userAction,  defined for 'login' in namespace '/'userAction
com.opensymphony.xwork2.DefaultActionInvocation.createAction(DefaultActionInvocation.java:318)
com.opensymphony.xwork2.DefaultActionInvocation.init(DefaultActionInvocation.java:399)
com.opensymphony.xwork2.DefaultActionProxy.prepare(DefaultActionProxy.java:198)
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:58)
org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:475)
org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77)
org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:91)
root cause java.lang.ClassNotFoundException: userAction
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1676)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1521)
com.opensymphony.xwork2.util.ClassLoaderUtil.loadClass(ClassLoaderUtil.java:157)
com.opensymphony.xwork2.ObjectFactory.getClassInstance(ObjectFactory.java:107)
com.opensymphony.xwork2.spring.SpringObjectFactory.getClassInstance(SpringObjectFactory.java:223)
com.opensymphony.xwork2.spring.SpringObjectFactory.buildBean(SpringObjectFactory.java:143)
com.opensymphony.xwork2.ObjectFactory.buildBean(ObjectFactory.java:150)
com.opensymphony.xwork2.ObjectFactory.buildAction(ObjectFactory.java:120)
com.opensymphony.xwork2.DefaultActionInvocation.createAction(DefaultActionInvocation.java:299)
com.opensymphony.xwork2.DefaultActionInvocation.init(DefaultActionInvocation.java:399)
com.opensymphony.xwork2.DefaultActionProxy.prepare(DefaultActionProxy.java:198)
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:58)
org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:475)
org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77)
org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:91)
note The full stack trace of the root cause is available in the Apache Tomcat/7.0.11 logs.

Answer 3

前几天还好使，应该是 struts.xml 这个文件出了问题，可能是你删除了文件造成的。

Answer 4

java.lang.ClassNotFoundException: userAction<!-- Users -->
   <action name="login" class="userAction" method="login">
   <result name="success">main.jsp</result>
   <result name="error">admin_index.jsp</result>
   </action>
 你配置里面class="userAction" 路径对了没有?

Answer 5

那应该是你jsp页面里面的对应的action写错了。
仔细看看你的错误信息，感觉像你的文件路径被动了

Answer 6

你的namespace  "/" 下找不到你的Action类。

Answer 7

java.lang.ClassNotFoundException: userAction
 没有找到Action 类 ，加断点跑一下，看看哪里错了

Answer 8

<package name="com.duyuan.action" extends="struts-default" namespace="/">
  <!-- Users -->
  <action name="login" class="userAction" method="login">
    <result name="success">main.jsp</result>
    <result name="error">admin_index.jsp</result>
  </action>
  <action name="register" class="userAction" method="register">
    <result name="success">admin_index.jsp</result>
    <result name="error">register.jsp</result>
  </action>
  <action name="update" class="userAction" method="update">
    <result name="success">admin_index.jsp</result>
    <result name="error">admin_update.jsp</result>
  </action>
</package>
错误信息是namespace /下没有action，是不是摆错地方了，删掉namespace="/"试试看

Answer 9

你看一下你登陆后跳转的Action的路径和namespace="/"这个能不能对的上！