<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<title>My JSP 'index.jsp' starting page</title>
</head>
<body>
<form name="formName" action="dologin.jsp">
用户名：<input type="text" name="uname"><br> 密码：<input
type="text" name="password"><br>
<input type="button" value="登录" onclick="toLogin()">
<input type="button" value="注册" onclick="toReg()">
</form>
<script type="text/javascript">
function toReg() {
window.location.href = "reg.jsp";
}
function toLogin() {
if(formName.uname.value==""||formName.password.value==""){
alert("账号或密码不能为空!");
return;
}
formName.submit();
}
</script>
<br>
</body>
</html>
<%@page import="com.dmk.entity.User"%>
<%@page import="com.dmk.dao.UserDao"%>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<title>My JSP 'index.jsp' starting page</title>
</head>
<body>
<%
String uname = request.getParameter("uname");
String password = request.getParameter("password");
UserDao userDao = new UserDao();
User user = userDao.getUserByUname(uname);
if (password.equals(user.getPassword())) {
session.setAttribute("uname", uname);
request.getRequestDispatcher("main.jsp").forward(
request, response);
} else {
%>
<script type="text/javascript">
alert("登录失败");
</script>
<%
request.getRequestDispatcher("login.jsp").forward(request,
response);
}
%>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<title>My JSP 'index.jsp' starting page</title>
</head>
<body>
<form name="regForm" action="submit.jsp">
用户名：<input type="text" name="uname"><br> 密码：<input
type="password" name="password"><br> 确认密码：<input
type="password"><br> 年龄：<input type="text" name="age"><br>
</form>
<button onclick="reg()">登录</button>
<script type="text/javascript">
function reg() {
regForm.submit();
}
</script>
<br>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<title>My JSP 'index.jsp' starting page</title>
</head>
<body>
<%
request.setCharacterEncoding("utf-8");
response.setCharacterEncoding("utf-8");
String uname = request.getParameter("uname");
String password = request.getParameter("password");
Integer age = Integer.parseInt(request.getParameter("age"));
User user = new User(uname, password, age);
UserDao userDao = new UserDao();
userDao.regUser(user);
response.sendRedirect("login.jsp");
%>
</body>
</html>
package com.dmk.entity;
public class User {
private Integer stuId;
private String uname;
private String password;
private Integer age;
public User() {
super();
}
public User(String uname, String password, Integer age) {
super();
this.uname = uname;
this.password = password;
this.age = age;
}
public Integer getStuId() {
return stuId;
}
public void setStuId(Integer stuId) {
this.stuId = stuId;
}
public String getUname() {
return uname;
}
public void setUname(String uname) {
this.uname = uname;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
}
package com.dmk.util;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
public class DbUtil {
static {
try {
Class.forName("com.mysql.jdbc.Driver");
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public static Connection getCon() {
Connection con = null;
try {
con = DriverManager.getConnection(
"jdbc:mysql://localhost:3306/test", "root", "123456");
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return con;
}
}
