主页面
<%@ 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>
<form name="form1" method="post" action="kj.jsp" >
<table>
<tr>
<td>编号：</td>
<td> <input type="text" name="sid" id="userName" ></td>
</tr>
<tr>
<td>用户名：</td>
<td> <input type="text" name="uname" id="userName" ></td>
</tr>
<tr>
<td>输入登录密码：</td>
<td><input type="password" name="upwd" id="pwd"></td>
</tr>
<tr>
<td colspan="2"><input type="submit" value="登录"> <input type="submit" value="注册"></td>
</tr>
</table>
</form>
</body>
</html>
跳转页面
<%@page import="com.ss.dao.stuDao"%>
<%@page import="com.ss.bean.stu"%>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
stu s = new stu();
int id = Integer.parseInt(request.getParameter("sid"));
s.setSid(id);
String uname = request.getParameter("uname");
s.setUname(uname);
String upwd = request.getParameter("upwd");
s.setUpwd(upwd);
stuDao sd=new stuDao();
if(sd.addstu(s)>0){
//跳转注册成功页面
}else{
//错误页面
}
%>
<%
if(uname.equals("zs")&&upwd.equals("123")){
//跳转成功登录页面
request.getRequestDispatcher("ok.jsp").forward(request, response);
session.setAttribute("uname",uname);
}
else{
//错误页面
request.getRequestDispatcher("index.jsp").forward(request, response);
}
%>
登陆成功
<%@ 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+"/"; %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> </head> <body> 成功登录！<br> </body> </html>
stu
package com.ss.bean;
public class stu {
private int sid;
private String uname;
private String upwd;
//访问器
public int getSid() {
return sid;
}
public void setSid(int sid) {
this.sid = sid;
}
public String getUname() {
return uname;
}
public void setUname(String uname) {
this.uname = uname;
}
public String getUpwd() {
return upwd;
}
public void setUpwd(String upwd) {
this.upwd = upwd;
}
//构造器
public stu(int sid, String uname, String upwd) {
super();
this.sid = sid;
this.uname = uname;
this.upwd = upwd;
}
public stu() {
super();
}
}
stuDao
package com.ss.dao;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import com.ss.bean.stu;
import com.sun.corba.se.pept.transport.Connection;
public class stuDao {
public int addstu(stu s){
int i=0;
try {
//加载驱动
Class.forName("com.mysql.jdbc.Driver");
//建立连接
Connection con=(Connection) DriverManager.getConnection("jdbc:mysql://localhost:3306/mysql?useUnicode=true&characterEncoding=utf8", "root", "root");
String sql="insert into stu values(?,?,?)";
PreparedStatement ps=((java.sql.Connection) con).prepareStatement(sql);
ps.setInt(1, s.getSid());
ps.setString(2, s.getUname());
ps.setString(3, s.getUpwd());
i=ps.executeUpdate();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return i;
}
public int selectUser(stu u){
int n=0;
try{
Class.forName("com.mysql.jdbc.Driver");
Connection con=(Connection) DriverManager.getConnection("jdbc:mysql://localhost:3306/mysql?useUnicode=true&characterEncoding=utf8", "root", "root");
String sql="select uname,upwd from stu where uname=?and upwd=?";
PreparedStatement ps=((java.sql.Connection) con).prepareStatement(sql);
ps.setInt(1,u.getSid());
ps.setString(2, u.getUname());
ps.setString(3, u.getUpwd());
n=ps.executeUpdate();
} catch (Exception e) {
e.printStackTrace();
}
return n;
}
}
