JavaEE之原生JDBC连接MySQL数据库

1，工程目录结构：导入mysql-connector-java-5.0.8-bin.jar

(在工程目录中双击该jar包中的.java文件可以查看其源代码，不过没啥意义，只针对mysql数据库)

查看源码的前提是有src文件，该jar包的源码包已上传

import java.sql.Connection;

import java.sql.DriverManager;

import java.sql.ResultSet;

import java.sql.Statement;

public static void main(String[] args) throws  Exception {

         // TODO Auto-generated method stub

         String sql = "SELECT * FROM stu";

         //注册驱动

         DriverManager.registerDriver(new  com.mysql.jdbc.Driver());

         //获取连接Connection

         Connection conn =  DriverManager.getConnection("jdbc:mysql://localhost:3306/test","root","root");

         //获得执行SQL语句的对象Statement

         Statement stmt = conn.createStatement();

         //执行SQL语句，返回结果集

         ResultSet rs = stmt.executeQuery(sql);

         //处理结果集（显示在控制台）

         while(rs.next()){

             System.out.print(rs.getObject(1));

             System.out.print(rs.getObject(2));

             System.out.print(rs.getObject(3));

             System.out.println(rs.getObject(4));

             System.out.println("------------------------");

         }

         //关闭连接，释放资源

         rs.close();

         stmt.close();

         conn.close();

    }