第十周Jsp作业
数据库test 中建个表 stu(stuid 主键 自动增长 ，用户名，密码，年龄)
1.设计一个注册页面，实现用户注册功能
2.设计一个登陆页面，实现用户名密码登陆
3.两个页面可以互相超链接
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> </head> <body> <script type="text/javascript"> function date(){ if(loginForm.uname.value==""){ alert("账号不能为空!"); return; } if(loginForm.upwd.value==""){ alert("密码不能为空!"); return; } loginForm.submit(); } </script> <form name="loginForm" action="dologin.jsp" method="post"> 用户名:<input type="text" name="uname" value="aa"><br> 密码: <input type="password" name="upwd" value="aa"> <input type="button" value="登录" onClick="date()"> <a href="coinn.jsp">还没有账号?点击注册</a> </form> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <%@page import="yy.m.xr.Stu"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> </head> <body> <% Stu sd=new Stu(); request.setCharacterEncoding("utf-8"); String uname = request.getParameter("uname"); String upwd = request.getParameter("upwd"); if (sd.login(uname, upwd)){ session.setAttribute("uname", uname); request.getRequestDispatcher("main.jsp").forward(request, response); }else{ out.print("登陆失败，即将跳回登陆页....."); response.setHeader("refresh", "5;url=login.jsp"); } %> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> </head> <body> <script type="text/javascript"> function date(){ if(loginForm.stuid.value==""){ alert("id不能为空!"); return; } if(loginForm.uname.value==""){ alert("账号不能为空!"); return; } if(loginForm.upwd.value==""){ alert("密码不能为空!"); return; } if(loginForm.upwd1.value==""){ alert("确认密码不能为空!"); return; } if(loginForm.uage.value==""){ alert("年龄不能为空!"); return; } loginForm.submit(); } </script> <form name="loginForm" action="docoin.jsp" method="post"> stuid:<input type="number" name="stuid" ><br> 用户名:<input type="text" name="uname" value="aa"><br> 密码: <input type="password" name="upwd" value="aa"><br> 确认密码: <input type="password" name="upwd1" value="aa"><br> 年龄:<input type="number" name="uage" ><br> <a href="login.jsp">返回登录</a> <input type="button" value="注册" onClick="date()"> </form> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <%@page import="yy.m.xr.Stu"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> </head> <body> <% request.setCharacterEncoding("utf-8"); String id =request.getParameter("stuid"); Integer stuid =Integer.parseInt(id); String uname = request.getParameter("uname"); String upwd = request.getParameter("upwd"); String upwd1 = request.getParameter("upwd1"); String age =request.getParameter("uage"); Integer uage =Integer.parseInt(age); if((upwd.equals(upwd1))){ Stu sd=new Stu(); sd.reg(stuid, uname, upwd, uage); out.print("注册成功，即将跳回登录页....."); response.setHeader("refresh", "5;url=login.jsp"); } else{ out.print("两次密码不一致，即将跳回注册页....."); response.setHeader("refresh", "5;url=coinn.jsp"); } %> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> </head> <body> <% String uname=(String)session.getAttribute("uname"); //如果他是空，说明没登陆，直接访问该页面了 if(uname==null) response.sendRedirect("login.jsp"); %> 欢迎你<%=uname %> <a href="exit.jsp">退出登录</a> <br> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> </head> <body> <% session.invalidate(); response.setHeader("refresh", "5;url=login.jsp"); %> 退出成功! </body> </html>
