用servlet进行用户名和密码校验
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<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <title>西南石油大学电子邮件系统</title> <link rel="stylesheet" type=text/css href="Mystyle.css" /> </head> <body> <div class="t"> <div class="h"> <div class="logo"> <img src="img/login_logo.png"/> </div> <a target="_blank" class="help">帮助</a> </div> </div> <div class="c"> <div class="box" style="right: 60px;top: 60px;left: auto;" id="box"> <ul class="tab" id="tab"> <li class="current">账号登录</li> <li class="dragbar"></li> </ul> <div class="boxc" id="tab_via_acct"> <h3>用户登录</h3> <form> <div class="text_item"> <input type="text" class="text" id="user" name="user" style="font-size: 20px;" _autocomplete="off" placeholder="用户名"> </div> <div> <input type="password" class="text" id="password" _autocomplete="off" name="password" placeholder="密码"> </div> <div class="b1"> <span style="float: left;"> <font style="color: red;font-family: ‘宋体‘; clear: both;">学生选择@stu.swpu.edu.cn</font> </span> <span class="blt"> <a style="text-decoration: none;">忘记密码</a> </span> </div> <div class="btnb"> <input type="submit" name="submit" class="btn" value="登 录" style="float: right;"> </div> </form> </div> </div> </div> <div class="b">西南石油大学</div> </html>
package com.Swpu.email; import java.io.IOException; import java.io.PrintWriter; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; /** * Servlet implementation class ServletRequest */ public class ServletRequest extends HttpServlet { private static final long serialVersionUID = 1L; private String User; private String Password; /** * @see HttpServlet#HttpServlet() */ public ServletRequest() { super(); // TODO Auto-generated constructor stub } /** * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response) */ protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // TODO Auto-generated method stub response.getWriter().append("Served at: ").append(request.getContextPath()); } /** * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response) */ protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // TODO Auto-generated method stub response.setContentType("text/html;charset=UTF-8"); response.setCharacterEncoding("utf-8"); PrintWriter out=response.getWriter(); //获取参数 User=request.getParameter("user"); Password=request.getParameter("password"); if(User.equals("tom") && Password.equals("123")) { out.print("<h1>登陆成功</h1>"); out.print("欢迎 : " + User+",您的密码是:"+Password); }else if(User==""||Password==""){ out.print("<h1>用户名或密码不能为空</h1>"); }else { out.print("<h1>用户名或密码错误</h1>"); } out.close(); } }
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