使用MyEclipse8.5 + tomcat6.0进行开发。
这是一个登录验证程序。
已经把structs资源包中的blank项目中的jar放到myeclipse的lib目录中
代码部分见下
错误信息
严重:
Could not find action or result
There is no Action mapped for namespace / and action name login. - [unknown location] ......
===================================================================
/**********************以下为代码和配置文件**********************/
===================================================================
LoginAction.java程序如下：
package com.struts.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() {
if (username.trim().equals("www") && (password.equals("www"))) {
return "success";
} else {
return "failed";
}
}
}
===============================================================
index.jsp文件代码如下：
<body>
<center>
<h1 align="center">
用户登录
</h1>
<form action="login.action" method="post">
姓名：
<input type="text" name="username" />
<br>
密码：
<input type="text" name="password" />
<br>
<br>
<br>
<input type="submit" name="submit" value="登录" />
</form>
</center>
</body>
================================================================
success.jsp和failed.jsp代码非常相似，如下：
success.jsp
<body>
<h1>欢迎登录！</h1>
</body>
failed.jsp
<body>
<h1>
登录失败！
</h1>
<a href="index.jsp">返回</a>
</body>
================================================================
其中struts.xml配置如下：
<struts>
<package namespace="" name="login"
extends="struts-default">
<action name="login" class="com.struts.action.LoginAction">
<result name="success">/success.jsp</result>
<result name="failed">/failed.jsp</result>
</action>
</package>
</struts>
=================================================================
web.xml配置如下：
<filter>
<filter-name>struts</filter-name>
<filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>
</filter>
<filter-mapping>
<filter-name>struts</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
=================================================================
/*******************一下为解决方法****************************/
=================================================================
刚开始时，输入用户名和密码点击登录按钮时，就会显示http;status 404错误，
There is no Action mapped for namespace / and action name login，经过仔细观察，解决方法如下：
1.将struts.xml一定要放在
src目录下，这样在程序编译时，就会将其放到classes目录下。
2.一定要将struts.xml中的extends="struts-default"写正确，刚开始的时候，把default写成了dafult，最后经过改正，程序可以正常运行了！
3.插一句，namespace写不写都影响不大的。
一定要注意以上红色字体和蓝色字体部分，这个是程序能否正常运行的关键！！！
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