配置struts2环境 找不到action

Question

struts.xml配置内容：
<struts>
<package name="struts2" namespace="/" extends="struts-default">
<action name="login" class="cn.itcast.struts2.action.LoginAction" method="execute">
<result name="success">/WEB-INF/pages/success.jsp</result>
<result name="errors">/WEB-INF/pages/errors.jsp</result>
</action>
</package>
</struts>web.xml配置内容：
<?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">
 <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>index.jsp</welcome-file>
 </welcome-file-list></web-app>LoginAciton.java
package cn.itcast.struts2.action;public class LoginAction {
private String username;
private String password;

public String getUsername(){
return username;
}
public String getPassword(){
return password;
}

public void setUsername(String username){
this.username = username;

}

public void setPassword(String password){
this.password = password;
}

//处理用户请求的execute方法
public String execute()throws Exception{
if(getUsername().equals("scott")&&
       getPassword().equals("tiger")){
  return "success";
 }else{
  return "error";
 }
}}在MyEclipse6.6.0上运行后提示错误：
严重: Exception starting filter struts2
Unable to load configuration. - action - file:/D:/Program%20Files/apache-tomcat-6.0.10/webapps/struts2/WEB-INF/classes/struts.xml:7:86
at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:58)
at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:360)
at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:403)
at org.apache.struts2.dispatcher.ng.InitOperations.initDispatcher(InitOperations.java:69)
at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.init(StrutsPrepareAndExecuteFilter.java:48)
at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:275)
at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:397)
at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:108)
at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:3693)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4342)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:761)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:741)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:525)
at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:920)
at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:883)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:492)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1138)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:120)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1023)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:719)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1015)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
at org.apache.catalina.core.StandardService.start(StandardService.java:448)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
at org.apache.catalina.startup.Catalina.start(Catalina.java:552)
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.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)
Caused by: Action class [cn.itcast.struts2.action.LoginAction] not found - action - file:/D:/Program%20Files/apache-tomcat-6.0.10/webapps/struts2/WEB-INF/classes/struts.xml:7:86 at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.verifyAction(XmlConfigurationProvider.java:405)
at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.addAction(XmlConfigurationProvider.java:355)
at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.addPackage(XmlConfigurationProvider.java:460)
at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.loadPackages(XmlConfigurationProvider.java:265)
at org.apache.struts2.config.StrutsXmlConfigurationProvider.loadPackages(StrutsXmlConfigurationProvider.java:111)
at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java:189)
at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:55)
... 31 more刚开始整Struts2，helloword都没整出来，真受挫折啊！！请高手指点一下

Answer 1

commons-fileupload-1.2.1。jar存在没？你的jsp中是怎么指定的？

Answer 2

存在commons-fileupload-1.2.1.jar
jsp页面：
<%@ page language="java" contentType="Text/html;charset=GBK" %>
<html>
<head>
<title>登陆页面</title>
</head>
<body>
<form action="Login.action" method="post">
<table align="center">
<caption><h3>用户登录</h3></caption>
<tr>
<td>用户名：<input type="text" name="username"/></td>
</tr>
<tr>
<td>密&nbsp;&nbsp;码: <input type="password" name="password"/></td>
</tr>
<tr align="center">
<td colspan="2"><input type="submit" value="登录"/>
<input type="reset" value="重填"/>
        </td>
</tr>

</table>
</form>
</body>
</html>

Answer 3

struts.xml 
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"struts-2.0.dtd"> 
<struts>
<package name="struts2" extends="struts-default">    <action name="login" class="com.test.action.LoginAction">             <result name="error">/error.jsp</result>
            <result name="success">/welcome.jsp</result>        </action>       </package>
</struts>

Answer 4

web.xml 
<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_9" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">    <display-name>Struts Blank</display-name>
    <filter>
        <filter-name>struts2</filter-name>
        <filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>
    </filter><filter-mapping>
        <filter-name>struts2</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping><welcome-file-list>
        <welcome-file>index.html</welcome-file>
    </welcome-file-list>
</web-app>

Answer 5

LoginAction.java 
package com.test.action;public class LoginAction 
{
 private String username;
 private String password;
 public String getUsername() {
  return username;
 }
 public void setUsername(String username) {
  this.username = username;
 }
 public String getPassword() {
  return password;
 }
 public void setPassword(String password) {
  this.password = password;
 }
 public String execute() throws Exception
 {
 if(getUsername().equals("scott")
   &&getPassword().equals("tiger"))
 {
  return "success";
 }
 else
 {
  return "error";
   }
 }
}

Answer 6

<form action="Login.action" method="post"> 
改为
<form action="/login.action" method="post"> 如还不行
改为
<form action="login.action" method="post"> 

Answer 7

<form action="Login.action" method="post"> 
<action name="login" class="cn.itcast.struts2.action.LoginAction" method="execute"> 
login一个大写一个小写？？

Answer 8

[code=Java]<filter>
        <filter-name>struts2</filter-name>
        <filter-class>
            org.apache.struts2.dispatcher.FilterDispatcher
        </filter-class>
    </filter>    <filter-mapping>
        <filter-name>struts2</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>[/code]
其余的看4，5楼

Answer 9

<form action="Login.action" method="post"> 
<action name="login" class="cn.itcast.struts2.action.LoginAction" method="execute"> 

Answer 10

<%@ page language="java" contentType="text/html; charset=UTF-8"%>
<html>
<head>
<title>登录页面</title>
</head>
<body>
<form action ="login.action" method="post"> 
<table align="center">
<caption><h3>用户登录</h3></caption>
<tr>
<td>用户名:<input type="text" name="username"/></td>
<td>密&nbsp;&nbsp;码:<input type="text" name="password"/></td>
</tr>
<tr align="center">
<td colspan="2"><input type="submit" value="登录"/>
&nbsp;&nbsp; <input type="reset" value="重填"/></td>
</tr>
</table>
</from>
</body>
</html>

Answer 11

bobo_916 你发的代码测试过吗？

Answer 12

cn.itcast.struts2.action.LoginAction 你这个类有编译成功吗？或者路径写错了

Answer 13

编译成功了 在classes目录下 \classes\cn\itcast\struts2\action\LoginAction.class

Answer 14

你的action为什么不继承ActionSupport?
public class LoginAction extends ActionSupport

Answer 15

POJO不是也可以作为action 不一定非得继承ActionSupport

Answer 16

没什么问题啊 难道你的action没有编译成功？你看看你webinfo 下面的classes里面有没有编译好的LoginAction.class

Answer 17

struts2不用继承ActionSupport
本来struts1耦合度高了  你struts2还继承ActionSupport   那没意义

Answer 18

Action class [cn.itcast.struts2.action.LoginAction] not found - action - file:/D:/Program%20Files/apache-tomcat-6.0.10/webapps/struts2/WEB-INF/classes/struts.xml:7:86 at 
struts.xml 第7行是什么？？

Answer 19

你把tomcat放到D:\根目录下试试，有没有可能是空格(%20)的问题哟

Answer 20

改了一下：
<struts>
 <package name="itcast" namespace="/test" extends="struts-default">
        <action name="helloworld" class="cn.itcast.action.HelloWorldAction" method="execute" >
<result name="success">/WEB-INF/page/hello.jsp</result>
<result name="error">/WEB-INF/page/error.jsp</result>
        </action>
 </package>
</struts>web.xml：
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4" 
xmlns="http://java.sun.com/xml/ns/j2ee" 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee 
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">    <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>
其他的基本一样 这次可以  但不知道为什么？？感觉差不多

Answer 21

我发现原来我一直都没有搭建过struts2基本环境。刚搭了个和你差不多的，居然一直报
There is no Action mapped for action name login. - [unknown location]
真是悲剧啊！一直用springside现成的环境。也不好啊，连最基本的都搞不定！

Answer 22

你的struts.xml放在哪的，我开发放在web-inf下面，然后通过配置config参数老是加载不成功。后来还是老老实实放在web-inf/classes下面才OK了~