JDBC简单代码

1..写简单sql语句执行

DROP TABLE IF EXISTS `jdbctest`;
CREATE TABLE `jdbctest` (
  `id` ) NOT NULL AUTO_INCREMENT,
  `name` ) DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE DEFAULT CHARSET=latin1;

-- ----------------------------
-- Records of jdbctest
-- ----------------------------
', 'tom');
', 'marry');
', 'kill');

2.写jdbc操作数据库代码（记得导入mysql-connector-java-5.1.7-bin包）

package com.newbe.jdbc1;
import java.sql.*;
/**
 * @Auther: Newbe
 * @email:1160285648@qq.com
 * @Date: 2019/9/2 22:27
 * @Description:个人手写jdbc
 */
public class MyJDBC {
    //定义数据库连接四要素：驱动名，url，用户名和密码
    private static String Driver="com.mysql.jdbc.Driver";
    private static String Url/test";
    private static String UserName="root";
    private static String PassWord";
    public static void main(String[] args) {
        try {
            .加载jdbc驱动
            Class.forName(Driver);
            .获取数据库连接
            Connection connection = DriverManager.getConnection(Url,UserName, PassWord );
            .获取预处理对象
            String sql = "select * from JDBCTest";
            PreparedStatement statement = connection.prepareStatement(sql);
            .执行sql语句
            ResultSet result=statement.executeQuery();
            .获取结果集取数据
            System.out.println("id"+" "+"name");
            while (result.next()){
                int id=result.getInt("id");
                String name=result.getString("name");
                System.out.println(id+" "+name);
            }
            System.out.println();
            .关闭连接
            result.close();
            statement.close();
            connection.close();
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        } catch (SQLException e) {
            e.printStackTrace();
        } finally {
        }
    }
}

3.运行结果