java.lang.NoClassDefFoundError: com/mysql/cj/protocol/ExportControlled

Exception in thread "HikariPool-1 connection closer" java.lang.NoClassDefFoundError: com/mysql/cj/protocol/ExportControlled
    at com.mysql.cj.protocol.NetworkResources.forceClose(NetworkResources.java:53)
    at com.mysql.cj.protocol.AbstractSocketConnection.forceClose(AbstractSocketConnection.java:103)
    at com.mysql.cj.protocol.a.NativeProtocol.quit(NativeProtocol.java:1225)
    at com.mysql.cj.NativeSession.quit(NativeSession.java:174)
    at com.mysql.cj.jdbc.ConnectionImpl.realClose(ConnectionImpl.java:1733)
    at com.mysql.cj.jdbc.ConnectionImpl.close(ConnectionImpl.java:721)
    at com.zaxxer.hikari.pool.PoolBase.quietlyCloseConnection(PoolBase.java:139)
    at com.zaxxer.hikari.pool.HikariPool.lambda$closeConnection$1(HikariPool.java:447)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)

背景:Spring-boot-2.2.6 (spring-boot-starter-2.7.6),使用默认的Hikari连接数据库

安装使用的数据库版本是5.7.28; 项目pom.xml文件指定mysql-connector-java版本5.1.48

启动完成没报错,运行一段时间报错如上提示,搜索发现com/mysql/cj/protocol/ExportControlled这个类是在mysql-connector-java的8.0.x才出现,故提示找不到

解决办法:修改mysql-connector-java版本为8.0.19,Spring-boot自带connector默认版本也是8.0.x

你可能感兴趣的:(小问题记录)