实例内容
利用Strust2实现一个登陆 注册功能的登陆系统。
实现基础流程：
实现代码
JSP页面部分：
代码语言：javascript复制<%--
登陆页面
Created by IntelliJ IDEA.
User: Richard
Date: 2017/6/21
Time: 12:36
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@taglib prefix="s" uri="/struts-tags" %>
<html>
<head>
<title>Login</title>
</head>
<style>
body{
padding: 0;
margin:0;
}
h1{
background-color: black;
color: white;
}
.subform{
width:200px;
border-style:solid;
border-color: black;
border-radius: 2px;
padding: 10px;
margin-left: 40px;
margin-top: 70px;
}
</style>
<body>
<h1>Login For My Struts</h1>
<hr>
<div class="subform">
<form method="post" action="loginuser.action" name="pform" >
<p>用户名：</p><br>
<input type="text" name="username" id="name"><br>
<br>
<p>密码：</p><br>
<input type="password" name="password" id="key"><br>
<br>
<s:actionmessage></s:actionmessage>
<input type="submit" value="登陆" onclick="return check(this);"/>
<a href="register.jsp">点我注册</a>
</form>
</div>
</body>
<script>
function check(form) {
if(document.forms.pform.username.value==""){
alert("用户名不能为空！")
document.forms.pform.username.focus();
return false;
}
if(document.forms.pform.password.value==""){
alert("密码不能为空！")
document.forms.pform.password.focus();
return false;
}
}
</script>
</html><%--
注册页面
Created by IntelliJ IDEA.
User: Richard
Date: 2017/6/21
Time: 13:04
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@taglib prefix="s" uri="/struts-tags" %>
<html>
<head>
<title>Register</title>
</head>
<style>
body{
padding:0;
margin:0;
}
h1{
background-color: black;
color:white;
}
.form{
width: 400px;
border-radius: 2px;
padding:10px;
border-style: solid;
border-color: black;
margin:0 auto;
}
</style>
<body>
<H1>Register up for My Struts</H1>
<hr>
<form method="post" action="*reguser.action" name="rform" class="form">
<p>请输入用户名：</p><br>
<input type="text" name="username" id="name"><br>
<br>
<p>请输入密码：</p><br>
<input type="password" name="password" id="key"><br>
<p>请再次输入密码：</p><br>
<input type="password" name="compassword" id="comkey"><br>
<br>
<s:actionmessage></s:actionmessage>
<input type="submit" value="注册" onclick="return recheck(this);" />
<a href="login.jsp">登陆</a>
</form>
</body>
<script>
function recheck(form) {
if(document.forms.rform.username.value==""){
alert("用户名不能为空！");
document.forms.rform.username.focus();
return false;
}
if(document.forms.rform.password.value==""||document.forms.rform.compassword.value==""){
alert("密码不能为空！");
document.forms.rform.password.focus();
return false;
}
if(document.forms.rform.password.value!=document.forms.rform.compassword.value){
alert("两次输入的密码不相同！")
document.forms.rform.password.focus();
return false;
}
}
</script>
</html><%--
欢迎页面
Created by IntelliJ IDEA.
User: Richard
Date: 2017/6/16
Time: 21:38
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Welcome</title>
</head>
<body>
<h1>WelCome to My Struts Page</h1>
<hr>
当前登录的用户:${param.username}<br>
</body>
</html>XML配置方面
代码语言：javascript复制<?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>
<constant name="struts.devMode" value="true"/>
<constant name="struts.enable.DynamicMethodInvocation" value="true"></constant>
<!--利用通配符配置Action需要调用的方法-->
<package name="user" namespace="/" extends="struts-default">
<action name="*user" class="UserBlock.UserAction" method="{1}">
<result name="index">in.jsp</result>
<result name="login">login.jsp</result>
<result name="register">register.jsp</result>
</action>
</package>
</struts>Action
代码语言：javascript复制package UserBlock;
import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;
import java.util.ArrayList;
import java.util.Map;
import java.util.logging.LogManager;
/**
* Created by Richard on 2017/6/16.
* 继承ActionSupport实现一个Action
* 登陆界面通过loginuser.action调用login()方法来处理数据
* login()方法中通过ActionContext调用Session对象，存入输入错误的数据
* 通过addActionMessage()方法向页面输出相关信息
* 注册页面通过reguser.action调用reg()方法来处理数据
*/
public class UserAction extends ActionSupport {
private String INDEX="index";
private String LOGIN="login";
private String REG="register";
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 login(){
try{
if(username.equals("rekent")){
if(password.equals("root")){
/*登陆成功*/
return INDEX;
}else{
ActionContext applicton=ActionContext.getContext();
Map session=applicton.getSession();
int count;
if(session.get("count")==null){
count=0;
}else{
count= (int) session.get("count");
}
if(count>=3){
addActionMessage("错误次数过多");
count=0;
session.put("count",count);
return LOGIN;
}else{
count ;
addActionMessage("您输入的用户名或密码错误" count);
session.put("count",count);
return LOGIN;
}
}
}else{
addActionMessage("该用户不存在，已经跳转到注册页面");
return REG;
}
}catch (Exception e){
addActionError(e.getMessage());
}
return LOGIN;
}
public String reg(){
try{
if(username.equals("rekent"))
{
addActionMessage("该用户已经存在");
return REG;
}
else{
return INDEX;
}
}catch (Exception e){
addActionError(e.getMessage());
}
return REG;
}
}实例代码
示例代码，持续更新
