package com.imooc.jdbc;

import java.sql.Connection;

import java.sql.DriverManager;

import java.sql.ResultSet;

import java.sql.SQLException;

import java.sql.Statement;

? ? public class JdbcImooc {

private static final String url = "jdbc:mysql://127.0.0.1:3306/imooc";

private static final String user = "root";

private static final String password = "123";

public static void main(String[] args) {

// TODO Auto-generated method stub

//1加載驅動程序

try {

Class.forName("com.mysql.jdbc.Driver");

} catch (ClassNotFoundException e) {

// TODO Auto-generated catch block

e.printStackTrace();

//2.獲得數據庫連接

try {

Connection conn = DriverManager.getConnection(url, user, password);

//3.通過連接操控數據庫進行增刪改查

Statement stmt = conn.createStatement();

ResultSet rs = stmt.executeQuery("select user_name, age from imooc_goddess");

while (rs.next()){

System.out.println(rs.getString("name")+","+rs.getInt("age"));

}

} catch (SQLException e1) {

// TODO Auto-generated catch block

e1.printStackTrace();

}

}

}

}

為什么我的什么也不顯示