struts2 action编程

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struts2 action中属性与表单中提交的字段的关系如下，在使用时可以自动获取对应的值，无需手动获取。

package com.yht.web;import java.util.Map;import com.opensymphony.xwork2.ActionContext;import com.opensymphony.xwork2.ActionSupport;import com.yht.model.User;import com.yht.service.UserService;import com.yht.util.AppException;public class Login extends ActionSupport {private String name;private String password;private String massage;public String getName() {return name;}public void setName(String name) {this.name = name;}public String getPassword() {return password;}public void setPassword(String password) {this.password = password;}public String getMassage() {return massage;}public void setMassage(String massage) {this.massage = massage;}@Overridepublic String execute() {String result="";try {int id = new UserService().login(name, password);User u = new User();u.setName(name);u.setId(id);u.setPassword(password);if(id!=0){massage = "登录成功";ActionContext context = ActionContext.getContext();Map<String,Object> session = context.getSession();session.put("userId", id);session.put("username", name);int role = new UserService().getUserRole(id);if(role==0)//普通编辑{result = "toEditor";}else if(role==1)//管理员{result = "toAdmin";}}else{result = "toLogin";massage = "登录失败";}} catch (AppException e) {result = "error";massage = "系统异常"+ e.getMessage();}return result;}}

在struts.xml中配置这个action

 <package name="news" extends="struts-default"><!-- 接受登录信息，分发登录结果 -->   <action name="login" class="com.yht.web.Login">   <result name="toEditor" type="redirectAction">toEditor</result>   <result name="toAdmin" type="redirectAction">toAdmin</result>   <result name="toLogin" type="dispatcher">/login.jsp</result>   </action>   </package>

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