IntelliJ IDEA中JAVA连接MYSQL

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();
        }

    }
}