struts2 简单实现用户登录源码

package com.manage.action; import com.opensymphony.xwork2.ActionContext; import com.opensymphony.xwork2.ActionSupport; public class UserAction extends ActionSupport { private static final long serialVersionUID = 1L; 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 { return "login"; } public String login() throws Exception { String msg; if ("test".equals(this.username) && "test".equals(this.password)) { msg = "登录成功，欢迎" + this.username; ActionContext context = ActionContext.getContext(); if (null != context.getSession().get("uName")) { msg = this.username + "：您已经登录过了。"; } else { context.getSession().put("uName", this.username); } return "success"; } else { msg = "登录失败，用户名或密码错误。"; return "error"; } } }