Struts1登陆Demo
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2022-04-08 20:01:10
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本实例是Struts1的一个入门实例
采用的编辑器是Myeclipse 10
一，创建模型
本事列涉及两个JavaBean
1.UserInfo.java:描述用户的实体类
package cx.mystruts.entity;
public class UserInfo {
private String uid;
private String pwd;
public String getUid() {
return uid;
}
public void setUid(String uid) {
this.uid = uid;
}
public String getPwd() {
return pwd;
}
public void setPwd(String pwd) {
this.pwd = pwd;
}
public UserInfo(String uid, String pwd) {
super();
this.uid = uid;
this.pwd = pwd;
}
public UserInfo() {}
}
2.UserService.java:处理业务逻辑的JavaBean
package cx.mystruts.service;
import java.util.HashMap;
import java.util.Map;
import cx.mystruts.entity.UserInfo;
public class UserService {
//构造Map对象，用于存入UserInfo的集合
private Map userInfoMap=new HashMap();
//构造UserService静态对象，实现单列工厂模式
private static UserService userService=new UserService();
//构造函数私有，单列模式，模拟数据库产生UserInfo的集合
private UserService(){
try{
UserInfo u=new UserInfo("cx","123456");
userInfoMap.put(u.getUid(), u);
}
catch(Exception e){
e.printStackTrace();
}
}
//定义静态方法
public static UserService newInstance(){
return userService;
}
public UserInfo login(String uid,String pwd){
//判断用户输入的用户名是否在集合中
if(this.userInfoMap.containsKey(uid)){
UserInfo findUserInfo=(UserInfo)this.userInfoMap.get(uid);
if(findUserInfo.getPwd().equals(pwd)){
return findUserInfo;
}
return null;
}
return null;
}
}
二.以下步骤需要添加Struts支持，直接使用MyEclipse添加，这里不介绍
1.创建ActionForm
package cx.struts;
import org.apache.struts.action.ActionForm;
public class LoginActionForm extends ActionForm {
private String uid;
private String pwd;
public String getUid() {
return uid;
}
public void setUid(String uid) {
this.uid = uid;
}
public String getPwd() {
return pwd;
}
public void setPwd(String pwd) {
this.pwd = pwd;
}
}
2.创建控制器
（1）ActionMapping：包含Action的配置信息，与Struts-config.xml配置文件中的<action>元素对应。
（2）ActionForm：包含用户的表单数据。当Struts1框架调用execute()方法时，ActionFrom中的数据已经通过了表单验证。
（3）HttpServletRequest:当前的HTTP请求对象
（4）HttpServletResponse:当前的HTTP响应对象
package cx.struts;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import cx.mystruts.entity.UserInfo;
import cx.mystruts.service.UserService;
public class LoginAction extends Action{
@Override
public ActionForward execute(ActionMapping mapping, ActionForm form,HttpServletRequest request, HttpServletResponse response)throws Exception {
LoginActionForm frm=(LoginActionForm)form;
String uid=frm.getUid();
String pwd=frm.getPwd();
UserInfo user=UserService.newInstance().login(uid, pwd);
if(user!=null){
request.setAttribute("user", user);
return mapping.findForward("success");
}
return mapping.findForward("fail");
}
}
三.视图
1.登陆界面index.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>User Login</title>
</head>
<body>
<form action="login.do" method="post">
UID:<input type="text" name="uid" />
PWD:<input type="text" name="pwd"/>
<input type="submit" value="ok">
</form>
</body>
</html>
2.登陆成功界面success.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>Success</title>
</head>
<body>
<h1>Login Success</h1>
UID:${user.uid }<br/>
PWD:${user.pwd }
</body>
</html>
3.登陆失败界面fail.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>fail</title>
</head>
<body>
<h1>Login Fail</h1>
</body>
</html>
四.Struts配置文件
1.webxml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.5" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<display-name />
<servlet>
<servlet-name>action</servlet-name>
<servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
<init-param>
<param-name>config</param-name>
<param-value>/WEB-INF/struts-config.xml</param-value>
</init-param>
<init-param>
<param-name>debug</param-name>
<param-value>3</param-value>
</init-param>
<init-param>
<param-name>detail</param-name>
<param-value>3</param-value>
</init-param>
<load-on-startup>0</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>action</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>
2.Struts-config.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.2//EN" "http://struts.apache.org/dtds/struts-config_1_2.dtd">
<struts-config>
<data-sources />
<form-beans>
<form-bean name="loginActionForm" type="cx.struts.LoginActionForm"/>
</form-beans>
<global-exceptions />
<global-forwards />
<action-mappings>
<action name="loginActionForm" path="/login" type="cx.struts.LoginAction">
<!-- 配置Action中的success转发，对应于index.jsp页面 -->
<forward name="success" path="/success.jsp"/>
<!-- 配置Action中的fail转发，对应于error.jsp页面 -->
<forward name="fail" path="/fail.jsp"/>
</action>
</action-mappings>
<message-resources parameter="cx.struts.ApplicationResources" />
</struts-config>
OK!到此，整个登陆流程就Ok！