我保存表情符号使用spring.datasource.tomcat但有时它不起作用

Question

现在我使用spring boot，tomcat数据源，当我发表评论时，有时它会起作用，但有时它不起作用！我没有想法。请帮帮我！谢谢

这是我的java代码

spring:
  application:
    name: Club Application
  datasource:
    name: dev
    url: jdbc:mysql://dev.mysql.apitops.com:4307/tops_club?useUnicode=true&characterEncoding=utf8&zeroDateTimeBehavior=convertToNull&autoReconnect=true&failOverReadOnly=false
    username: club_test
    password: 7VBD2vqLnectdn9fvYKhpPGVL49wzJ
    type: org.apache.tomcat.jdbc.pool.DataSource
    driver-class-name: com.mysql.jdbc.Driver
    tomcat:
      init-s-q-l: SET NAMES utf8mb4 COLLATE utf8mb4_unicode_ci
      max-active: 5
      max-idle: 5
      min-idle: 5
      initial-size: 5
      validation-query: 'select 1'
      test-on-borrow: true
      test-on-return: true
      test-while-idle: true
      max-wait: 15000