package com.test.action;
import com.opensymphony.xwork2.ActionSupport;
import com.test.model.User;
public class CheckUser extends ActionSupport{
/**
*
*/
private static final long serialVersionUID = 1L;
private User user=new User();
private String username;
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;
}
private String password;
@Override
public String execute() throws Exception {
System.out.println("checkuser");
// TODO Auto-generated method stub
return SUCCESS;
}
/*注意，validate方法是在execute之前运行*/
@Override
public void validate() {
user.setUsername(this.getUsername());
user.setPassword(this.getPassword());
System.out.println(user);
// TODO Auto-generated method stub
if(user.getUsername().equals("admin"))
{
this.addFieldError("username_error", "权限不够");
}
super.validate();
}
}
struts.xml
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN" "http://struts.apache.org/dtds/struts-2.3.dtd"> <struts> <!-- 採用注解的方式 --> <constant name="struts.enable.DynamicMethodInvocation" value="true" /> <constant name="struts.devMode" value="true" /> <package name="default" namespace="" extends="struts-default"> <!-- struts2捕获action类异常 --> <!-- <global-results> <result name="error">/error.jsp</result> </global-results> <global-exception-mappings> <exception-mapping result="error" exception="java.lang.Exception"></exception-mapping> </global-exception-mappings> --> <action name="link" class="com.test.action.LoginAction"> <result>/result.jsp</result> </action> <action name="linkIOC" class="com.test.action.LoginActionIOC"> <result>/result.jsp</result> </action> <!-- 正确和错误的分别跳转，齐总input是在验证失败后会跳转的页面 --> <action name="data" class="com.test.action.CheckUser"> <result name="success">/result.jsp</result> <result name="input">/login.jsp</result> </action> </package> <!-- Add packages here --> </struts>
html页面
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib uri="/struts-tags" prefix="s"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<!-- 这个地方是用来显示错误信息 -->
<s:fielderror/>
<form action="data.action" method="post">
<input type="text" name="username"><br>
<input type="password" name="password"><br>
<input type="submit" name="ok"><br>
</form>
</body>
</html>即当严重不通过后，会返回到该页面，同一时候输出出错信息。
測试结果。当输入admin之后。会发现例如以下的页面
版权声明：本文博主原创文章，博客，未经同意不得转载。