index
<form method="post" action="register.jsp"> 用户名:<input type="text" name="username"><br> 密码: <input type="text" name="password"><br> 性别: <input type="text" name="gender"><br> 年龄: <input type="text" name="age"><br> <button type="submit">注册</button> </form>userbean
package com.media.bean; public class UserBean { private String username; private String password; private int gender; private int age; private int status; public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } public int getGender() { return gender; } public void setGender(int gender) { this.gender = gender; } public int getAge() { return age; } public void setAge(int age) { this.age = age; } public int getStatus() { return status; } public void setStatus(int status) { this.status = status; } }register
<% UserBean user = new UserBean(); user.setUsername(request.getParameter("username")); user.setPassword(request.getParameter("password")); Class.forName("com.mysql.jdbc.Driver"); String url = "jdbc:mysql://127.0.0.1:3306/book?user=root&password=root"; Connection connection = DriverManager.getConnection(url); Statement stmt = connection.createStatement(); String sql = "insert into user (username,password,gender,age) values('"+user.getUsername()+"','"+user.getPassword()+"',1,23)"; //String sql = "update user set status = 3 where id = 2"; //String sql = "delete from user where id = 5"; int count = stmt.executeUpdate(sql); if(count == 0 ){ out.print("注册失败"); }else{ out.print("注册成功"); } %>index
<form action="home.jsp " method="post"> <input type ="text " name="username"> <input type ="text " name="password"> <button type ="submit ">提交</button> </form>home
<% Class.forName("com.mysql.jdbc.Driver"); String url = "jdbc:mysql://localhost:3306/book"; Connection connection = DriverManager.getConnection(url,"root","root"); String sql = "select * from user where username = ? and password = ?"; PreparedStatement ps = connection.prepareStatement(sql); ps.setString(1,request.getParameter("username")); ps.setString(2,request.getParameter("password")); ResultSet rs = ps.executeQuery(); while (rs.next()){ out.print(rs.getString("username")+"-"+rs.getString(3)+"<br>"); } /* Statement stmt = connection.createStatement(); String sql = "select * from user"; ResultSet rs = stmt.executeQuery(sql); while (rs.next()){ out.print(rs.getString("username")+"-"+rs.getNString(3)+"<br>"); } */ %>