1.下载mysql包

2.项目中引入mysql包

3.连接数据库，查询结果

看jdbc数据库连接类

package Facade;import java.sql.*;/** * Created by Jiqing on 2016/10/18. */public class JDBCFacade {    private Connection conn=null;    private Statement statement=null;    public void open(String driver,String jdbcUrl,String userName,String userPwd) {        try {            Class.forName(driver).newInstance();            conn = DriverManager.getConnection(jdbcUrl,userName,userPwd);            statement = conn.createStatement();        }        catch (Exception e) {            e.printStackTrace();        }    }    public int executeUpdate(String sql) {        try {            return statement.executeUpdate(sql);        }        catch (SQLException e) {            e.printStackTrace();            return -1;        }    }    public ResultSet executeQuery(String sql) {        try {            return statement.executeQuery(sql);        } catch (SQLException e) {            e.printStackTrace();            return null;        }    }    public void close() {        try {            conn.close();            statement.close();        } catch (SQLException e) {            e.printStackTrace();        }    }}

客户端执行

package Facade;import java.sql.ResultSet;/** * Created by Jiqing on 2016/10/18. */public class Client {    public static void main(String args[])    {        try {            JDBCFacade jdbc= new JDBCFacade();            jdbc.open("com.mysql.jdbc.Driver","jdbc:mysql://localhost:3306/tpshop","root","123456");            ResultSet rs =  jdbc.executeQuery("select * from tp_admin");            while(rs.next()){                String email = rs.getString("email") ;                System.out.println(email);            }        }        catch (Exception e)        {            e.printStackTrace();        }    }}