jsp+mysql实现简单注册

jsp实现简单注册

1.实现工具:j2EE、mysql、Navicat for mysql
2.导入mysql-connector-java-x.x.xx-bin.jar包

1.在数据库中新建一张表

jsp+mysql实现简单注册_第1张图片

表格数据的属性设置如下
jsp+mysql实现简单注册_第2张图片

2.登陆注册主界面

源代码:

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>User Login Pagetitle>



head>
<body>
<hr><br>Welcome to this <font color="green">Login Pagefont>!<br>
<form action="do_login.jsp" method="post">
<br>
<h1>Please input your message:h1><br>
用户名:<input type="text" name="name"><br>
<br>
密码:  <input type="password" name="password"><br>
<br><br><br>
<input type="submit" value="登陆">    <input type="reset"><br>
Click me to <font color="green"><a href="register.jsp">Registera>!font><br>

form>

body>
html>

运行结果:
jsp+mysql实现简单注册_第3张图片

3.注册界面

源代码:

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here!title>
head>
<body>
<hr><br>Welcome to this <font color="green">Enroll(Register) Pagefont>!<br>
<form action="do_register.jsp" method="post">
<br>
<h1>Please input your message:h1><br>
用户名:<input type="text" name="register_name"><br>
密码:<input type="password" name="register_password"><br>
<br><br><br>
<input type="submit" value="注册">    <input type="reset"><br>
form>
body>
html>

运行结果:
jsp+mysql实现简单注册_第4张图片

4.注册处理

源代码:

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ page import="java.sql.*" %>

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Server to do the register page!title>
head>
<body>
<%

 String Register_name=request.getParameter("register_name");//获取register_name的参数值
 String Register_password=request.getParameter("register_password");//获取register_password的参数值
 if(Register_name==null||"".equals(Register_name.trim())||Register_password==null||"".equals(Register_password.trim())){//判断用户名和密码是否为空 
      //out.write("用户名或密码不能为空!"); 
      System.out.println("用户名或密码不能为空!");//输出提示  
      response.sendRedirect("register.jsp");//页面跳转
      return; 
      //request.getRequestDispatcher("login.jsp").forward(request, response); 
     } 

%>

<%
try{
 Class.forName("com.mysql.jdbc.Driver");//加载mysql驱动
 Connection conn=DriverManager.getConnection("jdbc:mysql://localhost:3306/test1?useSSL=false", "root", "3701211994812sls");//连接数据库
 Statement stmt=conn.createStatement();//实例化Statement对象
 String InsertSQL="INSERT INTO p_user(username,password) values('"+Register_name+"','"+Register_password+"')";//sql语句
 System.out.println(Register_name+"\t"+Register_password);//输出注册信息

 int FLAG=stmt.executeUpdate(InsertSQL);//执行sql语句

 if(FLAG!=0){//判断查询结果
     out.println(""); //弹出注册信息history.go(-1)表示返回当前页面的上一页
 }else{
     out.println("");  
 }
 //关闭资源
 stmt.close();
 conn.close();

}catch(SQLException e){//捕获异常
e.printStackTrace(); 
}



%>

body>
html>

注册运行过程:

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