(No operations allowed after connection closed.). Possibly consider using a shorter maxLifetime value

(No operations allowed after connection closed.). Possibly consider using a shorter maxLifetime value

 

先按提示添加maxLifetime的超时时间试试看

spring:
  # 数据库连接
  datasource:
    username: root
    password: 
    url: 
    driver-class-name: com.mysql.cj.jdbc.Driver
    hikari:
      max-lifetime: 1200000