下载地址:http://download.csdn.net/detail/qq_33599520/9777172
项目结构图:
代码:
package com.mstf.action;
import java.util.List;
import com.mstf.entiity.User;
import com.mstf.service.UserBiz;
public class UserAction { // 控制器
private UserBiz userBiz;
private User user;
private String msg;
public String getMsg() {
return msg;
}
public void setMsg(String msg) {
this.msg = msg;
}
List<User> users;
public User getUser() {
return user;
}
public void setUser(User user) {
this.user = user;
}
public List<User> getUsers() {
return users;
}
public void setUsers(List<User> users) {
this.users = users;
}
// 用户登录的方法
public String login(){
userBiz = new UserBiz();
if(userBiz.validateUser(user))
return "welcome";
else{
msg = "请重新登陆";
return "error";
}
}
// 用户注册的方法
public String regist(){
userBiz = new UserBiz();
if(userBiz.registUser(user))
return "sucess";
else{
msg = "注册失败,请重新登陆";
return "fall";
}
}
// 显示所有注册用户的方法
public String showUsers(){
userBiz = new UserBiz();
users = userBiz.findAllUsers();
return "welcome";
}
}
package com.mstf.dao;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
import com.mstf.db.DbHelper;
import com.mstf.entiity.User;
public class UserDAO { // 用户的dao
// 用户登录
public boolean checkUser(User user){
Connection conn = DbHelper.getConnection();
String sql = "select * from admin where `userName`=? and `passWord`=?";
try {
PreparedStatement pstmt = conn.prepareStatement(sql);
pstmt.setString(1, user.getUserName());
pstmt.setString(2, user.getPassWord());
ResultSet rs = pstmt.executeQuery();
if(rs.next())
return true;
} catch (SQLException e) {
e.printStackTrace();
}
return false;
}
// 用户注册
public boolean saveUser(User user){
Connection conn = DbHelper.getConnection();
String sql = "insert into admin values(null,?,?)";
try {
PreparedStatement pstmt = conn.prepareStatement(sql);
pstmt.setString(1, user.getUserName());
pstmt.setString(2, user.getPassWord());
int num = pstmt.executeUpdate();
if(num>0)
return true;
} catch (SQLException e) {
e.printStackTrace();
}
return false;
}
// 显示所有注册用户
public List<User> findAllUsers(){
Connection conn = DbHelper.getConnection();
String sql = "select * from admin";
List<User> users = new ArrayList<User>();
try {
PreparedStatement pstmt = conn.prepareStatement(sql);
ResultSet rs = pstmt.executeQuery();
while(rs.next()){
User user = new User();
user.setId(rs.getInt("id"));
user.setUserName(rs.getString("userName"));
user.setPassWord(rs.getString("passWord"));
users.add(user);
}
} catch (SQLException e) {
e.printStackTrace();
}
return users;
}
}
package com.mstf.db;
import java.sql.Connection;
import java.sql.DriverManager;
public class DbHelper {
private static String url = "jdbc:mysql://localhost:3306/test"; //数据库地址
private static String userName = "root"; //数据库用户名
private static String passWord = "root"; //数据库密码
private static Connection conn;
private DbHelper(){
}
public static Connection getConnection(){
if(null == conn){
try {
Class.forName("com.mysql.jdbc.Driver");
conn = DriverManager.getConnection(url, userName, passWord);
} catch (Exception e) {
e.printStackTrace();
}
}
return conn;
}
public static void main(String[] args) { //测试数据库是否连通
System.err.println(getConnection());
}
}
package com.mstf.entiity;
public class User { // 实体类
private int id;
private String userName;
private String passWord;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
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 User(){
}
}
package com.mstf.filter;
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
public class LoginFilter extends HttpServlet implements Filter { // 登录过滤器
private static final long serialVersionUID = 1L;
public void destroy() {
}
public void doFilter(ServletRequest srq, ServletResponse srp, FilterChain filterChain) throws IOException, ServletException{
HttpServletRequest request = (HttpServletRequest) srq;
HttpServletResponse response = (HttpServletResponse) srp;
HttpSession session = request.getSession();
String url=request.getServletPath();
String contextPath=request.getContextPath();
if(url.equals("")) url+="/";
if((url.startsWith("/")&&!url.startsWith("/index.jsp"))){//若访问后台资源 过滤到login
String userName=(String)session.getAttribute("userName");
if(userName==null){//转入管理员登陆页面
response.sendRedirect(contextPath+"/index.jsp");
return;
}
}
filterChain.doFilter(srq, srp);
}
public void init(FilterConfig arg0) throws ServletException {
}
}
package com.mstf.service;
import java.util.List;
import com.mstf.dao.UserDAO;
import com.mstf.entiity.User;
public class UserBiz { // 业务层(服务层/逻辑处理层)
private UserDAO userDao;
// 验证用户登录是否合法
public boolean validateUser(User user){
userDao = new UserDAO();
// 业务层调用DAO的具体方法
return userDao.checkUser(user);
}
// 用户用户注册
public boolean registUser(User user){
userDao = new UserDAO();
return userDao.saveUser(user);
}
// 获得所有注册用户
public List<User> findAllUsers(){
userDao = new UserDAO();
return userDao.findAllUsers();
}
}
<?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>
<package name="test" namespace="/" extends="struts-default">
<action name="login" class="com.mstf.action.UserAction" method="login">
<result name="welcome" type="redirectAction">
<param name="actionName">showUsers</param>
</result>
<result name="error">/error.jsp</result>
</action>
<action name="regist" class="com.mstf.action.UserAction" method="regist">
<result name="sucess">/sucess.jsp</result>
<result name="fall">/fall.jsp</result>
</action>
<action name="showUsers" class="com.mstf.action.UserAction" method="showUsers">
<result name="welcome">/welcome.jsp</result>
</action>
</package>
</struts>
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
<display-name></display-name>
<!-- 起始页面 -->
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<!-- 过滤器 用于初始化struts2 -->
<filter>
<filter-name>struts2</filter-name>
<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
</filter>
<!-- 用于struts2 的过滤器映射 -->
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- 登陆验证过滤器 -->
<filter>
<filter-name>loginFilter</filter-name>
<filter-class>com.mstf.filter.LoginFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>loginFilter</filter-name>
<url-pattern>/error.jsp</url-pattern>
<url-pattern>/fall.jsp</url-pattern>
<url-pattern>/sucess.jsp</url-pattern>
<url-pattern>/welcome.jsp</url-pattern>
</filter-mapping>
</web-app>
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!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>登录失败</title>
</head>
<body>
<h1>用户名或密码错误!请重新登录。</h1>
<a href="index.jsp">返回后台管理首页</a>
</body>
</html>
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!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>注册失败</title>
</head>
<body>
<h1>很遗憾,注册失败!</h1>
<a href="index.jsp">返回后台管理首页</a>
</body>
</html>
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!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>后台管理</title>
</head>
<body>
<form action="login" method="post">
<table>
<tr>
<td>帐号:
<input type="text" name="user.userName" maxlength="16">
</td>
</tr>
<tr>
<td>密码:
<input type="password" name="user.passWord" maxlength="16">
</td>
</tr>
<tr>
<td>
<input type="submit" value="登录">
</td>
<td>
<a href="regeist.jsp">注册</a>
</td>
</tr>
</table>
</form>
</body>
</html>
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!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>用户注册</title>
</head>
<body>
<form action="regist" method="post" οnsubmit="return check(this);">
<table>
<tr>
<td>帐号:
<input type="text" name="user.userName" maxlength="16">
</td>
</tr>
<tr>
<td>输入密码:
<input type="password" name="user.passWord" maxlength="16">
</td>
</tr>
<tr>
<td>
<input type="submit" value="注册">
</td>
<td>
<a href="index.jsp">返回登录</a>
</td>
</tr>
</table>
</form>
</body>
</html>
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!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>注册成功</title>
</head>
<body>
<h1>恭喜您,${user.userName }注册成功!</h1>
<a href="index.jsp">返回后台管理首页登录</a>
</body>
</html>
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>欢迎登录</title>
</head>
<body>
<h1>欢迎${user.userName }登录成功!</h1>
<br><br>
<h2>已经注册的用户:</h2>
<br>
<table border="1px" width="600px" align="center">
<tr>
<td>
ID:
</td>
<td>
用户名:
</td>
<td>
密码:
</td>
</tr>
<c:forEach items="${users }" var="user">
<tr>
<td>
${user.id }
</td>
<td>
${user.userName }
</td>
<td>
${user.passWord }
</td>
</tr>
</c:forEach>
</table>
<a href="index.jsp">返回后台管理首页</a>
</body>
</html>
下载地址:http://download.csdn.net/detail/qq_33599520/9777172