平时使用mysql插入.查询数据都没有注意过效率,今天在for循环中使用JDBC插入1000条数据居然等待了一会儿 就来探索一下JDBC的批量插入语句对效率的提高 首先进行建表 create table `user1`( `id` int primary key auto_increment, `phoneNumber` int not null , `indentity` int not null , `address` varchar(100), index (id,phoneNumber,
Loading class `com.mysql.jdbc.Driver'. This is deprecated. The new driver class is `com.mysql.cj.jdbc.Driver'. The driver is automatically registered via the SPI and manual loading of the driver class is generally unnecessary. 这个问题是升级完MySQL的链接驱动后出现的问
异常: Loading class `com.mysql.jdbc.Driver'. This is deprecated. The new driver class is `com.mysql.cj.jdbc.Driver'. 整合spring boot项目过程中出现的,用了最新的mysql 连接驱动 application-dev.properties spring.datasource.url=jdbc:mysql://localhost:3306/test?serverTimezone=
Mysql版本的相关问题:com.mysql.cj.jdbc.Driver和com.mysql.jdbc.Driver 1. 在使用mysql时,控制台日志报错如下: Loading class `com.mysql.jdbc.Driver'. This is deprecated. The new driver class is `com.mysql.cj.jdbc.Driver'. The driver is automatically registered via the SPI and
在Eclipse中使用MySQL遇到了点小问题 如果对Eclipse中配置MySql还有疑问的可以参考一下这篇博客:https://blog.csdn.net/qq_38247544/article/details/80419692 参考菜鸟上的例子的代码如下: 当然,这是修改后没问题后的代码 package mysqltest; import java.sql.*; public class Mysql { // jdbc驱动名以及数据库URL // static final String J
http://tomcat.apache.org/tomcat-6.0-doc/jndi-datasource-examples-howto.html 前提:开启TOMCAT,MYsql MySQL DBCP Example0. Introduction Versions of MySQL and JDBC drivers that have been reported to work: MySQL 3.23.47, MySQL 3.23.47 using InnoDB,, MySQL 3.23