卡尔酱
  1. [18:58:57 WARN]: [com.zaxxer.hikari.pool.PoolBase] HikariPool-1 - Failed to validate connection com.mysql.jdbc.JDBC4Connection@753b791 (No operations allowed after connection closed.). Possibly consider using a shorter maxLifetime value.
  2. [18:58:57 WARN]: [com.zaxxer.hikari.pool.PoolBase] HikariPool-1 - Failed to validate connection com.mysql.jdbc.JDBC4Connection@1bb58331 (No operations allowed after connection closed.). Possibly consider using a shorter maxLifetime value.
  3. [18:58:57 WARN]: [com.zaxxer.hikari.pool.PoolBase] HikariPool-1 - Failed to validate connection com.mysql.jdbc.JDBC4Connection@7c6f59ad (No operations allowed after connection closed.). Possibly consider using a shorter maxLifetime value.
  4. [18:58:57 WARN]: [com.zaxxer.hikari.pool.PoolBase] HikariPool-1 - Failed to validate connection com.mysql.jdbc.JDBC4Connection@277885cd (No operations allowed after connection closed.). Possibly consider using a shorter maxLifetime value.
  5. [18:58:57 WARN]: [com.zaxxer.hikari.pool.PoolBase] HikariPool-1 - Failed to validate connection com.mysql.jdbc.JDBC4Connection@3d8d518c (No operations allowed after connection closed.). Possibly consider using a shorter maxLifetime value.
  6. [18:58:57 WARN]: [com.zaxxer.hikari.pool.PoolBase] HikariPool-1 - Failed to validate connection com.mysql.jdbc.JDBC4Connection@a16f107 (No operations allowed after connection closed.). Possibly consider using a shorter maxLifetime value.
  7. [18:58:57 WARN]: [com.zaxxer.hikari.pool.PoolBase] HikariPool-1 - Failed to validate connection com.mysql.jdbc.JDBC4Connection@c3263d9 (No operations allowed after connection closed.). Possibly consider using a shorter maxLifetime value.
复制代码
不知道是那个插件的报错。
服务器采用远程mysql，数据库不在本地。
DreamVoid
请参阅以下链接：
https://blog.csdn.net/r_coder/ar ... ai2-1.channel_param
https://developer.aliyun.com/article/636763

我的建议：
1.像第一个链接里说的那样，把所有需要连接数据库的，能自定义连接参数的，后面全部加一条autoReconnect=true参数
2.像你的报错里说的那样，调高每一个需要连接数据库的插件的配置文件里的maxLifetime数值
小晴M
把数据等待超时改成-1