软件3班20240513

java.util.PropertyResourceBundle@4554617c

package com.yanyu;import java.sql.*;
import java.util.ResourceBundle;public class JDBCTest01 {public static void main(String[] args) throws SQLException {
//        获取属性配置文件ResourceBundle bundle = ResourceBundle.getBundle("com/yanyu/db");//ctrl   alt   v
//        System.out.println(bundle);//   CTRL  SHIFT   F10  java.util.PropertyResourceBundle@4554617cString driver = bundle.getString("driver");String url = bundle.getString("url");String user = bundle.getString("user");String password = bundle.getString("password");
//Connection con = null;Statement st = null;ResultSet rs = null;//        注册驱动try {Class.forName(driver);//  alt   entercon = DriverManager.getConnection(url, user, password);
//            System.out.println(connection);con.setAutoCommit(false);st = con.createStatement();
//            关闭十五自动提交String sql = "insert into t_user values(2,'yanyu2')";boolean execute = st.execute(sql);
//            System.out.println(execute?"数据插入成功":"数据插入失败");con.commit();} catch (ClassNotFoundException e) {throw new RuntimeException(e);} catch (SQLException e) {if (con != null) {con.rollback();}throw new RuntimeException(e);} finally {if (rs != null) {rs.close();}if (st != null) {st.close();}if (con != null) {con.close();}}
//        异常     方法未重写（继承 父类   接口）}
}

driver=com.mysql.cj.jdbc.Driver
url=jdbc:mysql://127.0.0.1:3306/soft03
#https:www.baidu.com
user=root
password=root