第10次
主页面 <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>My JSP 'index.jsp' starting page</title> </head> <body> <form action="sLog.jsp"> 用户名:<input type="text" name="sname" /> 密码:<input type="password" name="spas" /> 年龄:<input type="text" name="sage" /> <input type="submit" value="登录" /> </form> <form action="sLogon.jsp"> <input type="submit" value="注册" /> </form> </body> </html> 登陆 <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <%@page import="stu.student" %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>My JSP 'index.jsp' starting page</title> </head> <body> <% String sname = request.getParameter("sname"); String spas = request.getParameter("spas"); try { if (sname!=null&&spas!=null) { out.println("登录成功!"); } else { out.println("登陆失败!"); response.setHeader("refresh", "2;url=main.jsp"); } } catch (Exception e) { out.println("异常!!"); response.setHeader("refresh", "2;url=main.jsp"); } %> 返回主页面 </body> </html> 注册 <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>My JSP 'index.jsp' starting page</title> </head> <body> <form action="logontest.jsp"> 姓名:<input type="text" name="sname" /> 密码:<input type="password" name="spas" /> 年龄:<input type="text" name="sage" /> <input type="submit" value="注册" /> </form> </body> </html> logontest.jsp <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <%@page import="stu.student"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>My JSP 'index.jsp' starting page</title> </head> <body> <% String name = request.getParameter("sname"); String pas = request.getParameter("spas"); String age = request.getParameter("sage"); if(name!=null&&pas!=null){ out.println("注册成功!"); response.setHeader("refresh", "5;url=main.jsp"); }else { out.println("注册失败!"); response.setHeader("refresh", "5;url=main.jsp"); } %> 返回主页面 </body> </html>
public class student { String sname; String spas; int sage; public student(String name, String pas, int age) { super(); sname = name; this.spas = pas; sage = age; } public String getName() { return sname; } public void setName(String name) { sname = name; } public String getPas() { return spas; } public void setPas(String pas) { this.spas = pas; } public int getAge() { return sage; } public void setAge(int age) { sage = age; } package stu; import java.sql.Connection; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; import java.util.Scanner; public class stuj extends stuTest{ /** * @param args * */ public boolean login(String Name, String pas) { boolean f = false; Connection conn = getConnection(); String sql = "select * from stu where uname=? and upwd=?"; PreparedStatement ps = null; ResultSet rs = null; try { ps = conn.prepareStatement(sql); ps.setString(1, Name); ps.setString(2, pas); rs = ps.executeQuery(); if (rs.next()) f = true; } catch (SQLException e) { // TODO Auto-generated catch block e.printStackTrace(); } finally { closeAll(conn, ps, rs); } return f; } public static void main(String Name, String pas,int Age) { Connection conn = getConnection(); PreparedStatement ps = null; Scanner sc=new Scanner(System.in); try { String sql = "insert into student(sname,spas,sage) values(?,?,?)"; // 4.执行SQL语句 System.out.println("请输名"); String sname=sc.next(); System.out.println("请输入密码"); String spas=sc.next(); System.out.println("请输入年龄"); int sage=sc.nextInt(); ps = conn.prepareStatement(sql); ps.setString(1, sname); ps.setString(2, spas); ps.setInt(3, sage); ps.executeUpdate();// 增删改都用这个 } catch (SQLException e) { // TODO Auto-generated catch block e.printStackTrace(); } finally { closeAll(conn, ps, null); } } } package stu; import java.sql.Connection; import java.sql.DriverManager; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; public class stuTest { /** * @param args */ protected static Connection getConnection(){ Connection conn=null; try { Class.forName("com.mysql.jdbc.Driver"); // 2.建立连接 conn = DriverManager.getConnection( "jdbc:mysql://localhost:3306/test", "root", "jth12345"); } catch (Exception e) { e.printStackTrace(); } return conn; } //关闭连接 protected static 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(); } } }