Mysql 8以后URl需要加

Mysql 8以后URl需要加"useUnicode=true&characterEncoding=utf-8&useSSL=false&serverTimezone=GMT&allowPublicKeyRetrieval=true"

useUnicode=true&characterEncoding=utf-8&useSSL=false&serverTimezone=GMT&allowPublicKeyRetrieval=true

这里提供一个在application.yml中的一套模板

# mysql
spring:
  datasource:
    #MySQL配置
    driverClassName:  com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://localhost:3306/数据库名?useUnicode=true&characterEncoding=utf-8&useSSL=false&serverTimezone=GMT&allowPublicKeyRetrieval=true
    username: 用户名
    password: 密码