JSP第八次作业
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
package com.db.user; public class User { private String uname; private String upass; private int age; public User(){} public User (String uname,String upass,int age){ this.uname = uname; this.upass = upass; this.age = age; } public String getUname() { return uname; } public void setUname(String uname) { this.uname = uname; } public String getUpass() { return upass; } public void setUpass(String upass) { this.upass = upass; } public int getAge() { return age; } public void setAge(int age) { this.age = age; } }
package com.db.mydriver; import java.sql.Connection; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; public class UserDemo extends DriverDemo{ //注册 public int AddData(com.db.user.User s){ int i=0; Connection conn=null; PreparedStatement ps = null; conn = getConnection(); try { String sql = "insert into user(uname,upass,age) values(?,?,?)"; ps = conn.prepareStatement(sql); ps.setString(1, s.getUname()); ps.setString(2, s.getUpass()); ps.setInt(3, s.getAge()); i =ps.executeUpdate(); }catch (SQLException throwables) { throwables.printStackTrace(); }finally{ closeAll(conn, ps, null); } return i; } //登录 public int dl(com.db.user.User s){ int i=0; Connection conn =null; PreparedStatement ps = null; ResultSet rs =null; try { conn = getConnection(); String sql = "select * from user where uname=? and upass=? and age=?"; ps =conn.prepareStatement(sql); ps.setString(1, s.getUname()); ps.setString(2, s.getUpass()); ps.setInt(3, s.getAge()); rs = ps.executeQuery(); if(rs.next()){ System.out.print("账户登录成功"); i=1; }else{ System.out.print("账户登录失败"); i=0; } } catch (SQLException e) { e.printStackTrace(); }finally{ closeAll(conn, ps, rs); } return i; } }
package com.db.mydriver; import java.sql.Connection; import java.sql.DriverManager; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; public class DriverDemo { public Connection getConnection(){ Connection conn = null; try { Class.forName("com.mysql.jdbc.Driver"); conn =DriverManager.getConnection("jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf8","root",",root"); } catch (Exception e) { // TODO: handle exception } return conn; } //关闭连接 public void closeAll(Connection con,PreparedStatement ps,ResultSet rs){ try { if(rs != null) rs.close(); if(ps != null) ps.close(); if(con != null) con.close(); } catch (SQLException e) { e.printStackTrace(); } } }
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> <html> <head> <base href="<%=basePath%>"> </head> <body> <form action="ZcDemo.jsp" method="post"> <p> <span>账号：</span> <input type="text" name="zname" /> </p> <p> <span>密码：</span> <input type="password" name="zpass" /> </p> <p> <span>年龄：</span> <input type="number" name="age" /> </p> <p> <input type="submit" class="btn01" value="注册"/> </p> </form> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <%@ page import="java.sql.*" %> <%@ page import="com.db.user.User" %> <%@ page import="com.db.mydriver.UserDemo" %> <% 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> <base href="<%=basePath%>"> <title>My JSP 'ZcDemo.jsp' starting page</title> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="description" content="This is my page"> <!-- <link rel="stylesheet" type="text/css" href="styles.css"> --> </head> <body> <% request.setCharacterEncoding("utf-8"); User s = new User(); UserDemo us = new UserDemo(); //获取输入的用户名 String namee = request.getParameter("zname"); namee.trim(); s.setUname(namee); String passs = request.getParameter("zpass"); // 密码 passs.trim(); s.setUpass(passs); if(us.AddData(s)!=0){ session.setAttribute("uname",s.getUname()); response.sendRedirect("Zcshow.jsp"); }else{ out.print("注册失败"); } %> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> <html> <head> <base href="<%=basePath%>"> </head> <body> <form action="dlDemo.jsp" method="post"> <p> <span>账号：</span> <input type="text" name="dname" value="admin" class="num" /> </p> <p> <span>密码：</span> <input type="password" name="dpass" class="pass"/> </p> <p> <span>年龄：</span> <input type="number" name="age" /> </p> <p> <input type="submit" class="btn01" value="登录"/> <a href="zc.jsp">没有账户？点击注册</a> </p> </form> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <%@ page import="com.db.user.User" %> <%@ page import="com.db.mydriver.UserDemo" %> <% 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> <base href="<%=basePath%>"> <title>My JSP 'dlDemo.jsp' starting page</title> </head> <body> <% request.setCharacterEncoding("utf-8"); User s = new User(); UserDemo us = new UserDemo(); //获取输入的用户名 String namees = request.getParameter("dname"); namees.trim(); s.setUname(namees); String passss = request.getParameter("dpass"); // 密码 passss.trim(); s.setUpass(passss); if(us.dl(s)!=0){ session.setAttribute("uname",s.getUname()); response.sendRedirect("dlshow.jsp"); }else{ response.sendRedirect("index.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> <base href="<%=basePath%>"> <title>My JSP 'dlshow.jsp' starting page</title> </head> <body> 欢迎用户：<%=session.getAttribute("uname")%>登录！！！！ </body> </html>
