65 modol1用户登录
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65 modol1用户登录
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定義一個Users類
package srever;public class Users {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;}}定義一個UserDao類
package srever;//用戶的業(yè)務(wù)邏輯類 public class UsersDAO {//用戶登錄方法public boolean usersLogin(Users u){if("admin".equals(u.getUsername())&&"admin".equals(u.getPassword())){return true;}else{return false;}} }定義一個login的jsp頁面
<%@ page language="java" import="java.util.*" contentType="text/html; charset=utf-8"%><% request.setCharacterEncoding("utf-8"); %> <jsp:useBean id="loginUser" class="srever.Users" scope="page"/> <jsp:useBean id="userDAO" class="srever.UsersDAO" scope="page"/> <jsp:setProperty property="*" name="loginUser"/><%String path = request.getContextPath();String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";//如果用戶和密碼都等于admin,則登錄成功if(userDAO.usersLogin(loginUser)){session.setAttribute("loginUser", loginUser.getUsername());request.getRequestDispatcher("login_success.jsp").forward(request, response);}else{response.sendRedirect("login_failure.jsp");} %>定義一個dologin的jsp頁面
<%@ page language="java" import="java.util.*" contentType="text/html; charset=utf-8"%> <%String path = request.getContextPath();String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";String username ="";String password ="";request.setCharacterEncoding("utf-8");//防止中文亂碼username = request.getParameter("username");password = request.getParameter("password");//如果用戶和密碼都等于admin,則登錄成功if("admin".equals(username)&&"admin".equals(password)){session.setAttribute("loginUser", username);request.getRequestDispatcher("login_success.jsp").forward(request, response);}else{response.sendRedirect("login_failure.jsp");} %>定義一個登錄成功的頁面login_success
<%@ page language="java" import="java.util.*" contentType="text/html; charset=utf-8"%> <%String path = request.getContextPath();String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> <html><head><!-- Page title --><title>imooc - Login</title><!-- End of Page title --><!-- Libraries --><link type="text/css" href="css/login.css" rel="stylesheet" /> <link type="text/css" href="css/smoothness/jquery-ui-1.7.2.custom.html" rel="stylesheet" /> <script type="text/javascript" src="js/jquery-1.3.2.min.js"></script><script type="text/javascript" src="js/easyTooltip.js"></script><script type="text/javascript" src="js/jquery-ui-1.7.2.custom.min.js"></script><!-- End of Libraries --> </head><body><div id="container"><div class="logo"><a href="#"><img src="assets/logo.png" alt="" /></a></div><div id="box"><% String loginUser = "";if(session.getAttribute("loginUser")!=null){loginUser = session.getAttribute("loginUser").toString();}%>歡迎您<font color="red"><%=loginUser%></font>,登錄成功！</div></div></body> </html>定義一個登錄失敗login_failure
<%@ page language="java" import="java.util.*" contentType="text/html; charset=utf-8"%> <%String path = request.getContextPath();String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> <html><head><!-- Page title --><title>imooc - Login</title><!-- End of Page title --><!-- Libraries --><link type="text/css" href="css/login.css" rel="stylesheet" /> <link type="text/css" href="css/smoothness/jquery-ui-1.7.2.custom.html" rel="stylesheet" /> <script type="text/javascript" src="js/jquery-1.3.2.min.js"></script><script type="text/javascript" src="js/easyTooltip.js"></script><script type="text/javascript" src="js/jquery-ui-1.7.2.custom.min.js"></script><!-- End of Libraries --> </head><body><div id="container"><div class="logo"><a href="#"><img src="assets/logo.png" alt="" /></a></div><div id="box">登錄失敗！請檢查用戶或者密碼!<br><a href="login.jsp">返回登錄</a> </div></div></body> </html>運行結(jié)果
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