jdbc mysql 8.0.12 驱动引入maven写法

1.在pom.xml中引用外部库 mysql-connector-java-8.0.12

     <!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->

    <dependency>
   <groupId>mysql</groupId>
   <artifactId>mysql-connector-java</artifactId>
   <version>8.0.12</version>
   </dependency>
   

2.更换驱动

（注意：自Mysql 8.0后，驱动名字从com.mysql.jdbc.Driver更改为com.mysql.cj.jdbc.Driver）

url =
"jdbc:mysql://localhost:3306/ [你的数据库名] ?useSSL=false&serverTimezone=GMT%2B8&useUnicode=true&characterEncoding=UTF-8";

Class.forName("com.mysql.cj.jdbc.Driver"); 
//注意，mysql8.0需要更换驱动名
connection =DriverManager.getConnection(url," [用户名] ","  [密码] ");