PreparedStatement(预编译)

package com.lianxi;

import java.sql.Connection;
import java.sql.Date;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.util.Scanner;

public class AddBook {

    public static void main(String[] args) throws Exception {
        Class.forName("com.mysql.jdbc.Driver");
        Connection conn=DriverManager.getConnection("jdbc:mysql://localhost:3306/boooks","root","tiger");
        //创建预编译的PS
        PreparedStatement ps=conn.prepareStatement("insert into book(bookname,price,creatdate)values(?,?,?)");
        String bookname;
        int price;
        Scanner s=new Scanner(System.in);
        System.out.println("请输入书名");
        bookname=s.next();
        System.out.println("价格");
        price=s.nextInt();
        //两行代码赋值
        ps.setString(1, bookname);
        ps.setInt(2, price);
        ps.setDate(3, new Date(116,6,7));
        //new Date方法不好
        ps.execute();
        conn.close();

    }

}