问题发现在七月份时,经常发现有几个定时任务报错,查看了下异常原因,大概定位是数据库执行异常Errorqueryingdatabase.Cause:com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException:UnsupportedcommandTheerrormayexistinclasspathresource[mapperXXXXXXXXXMapper.xml]TheerrormayinvolvedefaultParameterMapTheerroroccurredwhilesettingparametersSQL:selectt3.cino,t2.snasorderSn,t2.provideridasprovide...