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struts的action添加内置信息

2014-10-25 13:52 260 查看

package com.test.action;

import com.opensymphony.xwork2.ActionSupport;
import com.test.dao.UserCheck;
import com.test.vo.User;

public class LoginActionSupport extends ActionSupport{

/**
*
*/
private static final long serialVersionUID = 1L;
public LoginActionSupport()
{
System.out.println("LoginActionSupport");
}
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;

public String execute()
{
User u=new User();
u.setUsername(this.getUsername());
u.setPassword(this.getPassword());

/*调用业务逻辑层代码*/
UserCheck check=new UserCheck();
if(check.login(u))
{
return "login_ok";
}
else
{
this.addFieldError("error", "用户名或密码错误！");
return "login_fail";
}

}
}

在JSP页面代码如下所示

<%@ 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>
登陆失败！<br>
<s:fielderror name="error" theme="simple"/>
</body>
</html>

输出页面

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