Description
在spring boot 1.4中，内嵌tomcat，项目启动时报错，错误信息如下：WARN o.a.c.loader.WebappClassLoaderBase -The web application [api#v1] appears to have started a thread named [Abandoned connection cleanup thread] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
java.lang.Object.wait(Native Method)
java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:143)
com.mysql.jdbc.AbandonedConnectionCleanupThread.run(AbandonedConnectionCleanupThread.java:43)
2016-11-04 11:26:59.373 [main] INFO o.s.b.a.l.AutoConfigurationReportLoggingInitializer -
Error starting ApplicationContext. To display the auto-configuration report enable debug logging (start with --debug)
2016-11-04 11:26:59.389 [main] ERROR o.s.boot.SpringApplication -Application startup failed
org.springframework.jmx.export.UnableToRegisterMBeanException: Unable to register MBean [com.github.tobato.fastdfs.conn.FdfsConnectionPool@574413bd] with key 'tobaotoFdfsConnectionPool'; nested exception is javax.management.InstanceAlreadyExistsException: MXBean already registered with name org.apache.commons.pool2:type=GenericKeyedObjectPool,name=pool