c3p0不断输出debug日志 Running DeadlockDetector[Exiting. No pending tasks.] log4j.properties添加内容：

问题：c3p0 疯狂输出debug日志

信息如下：

[DEBUG] 2018-06-22 16:06:29,972 method:com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector.run(ThreadPoolAsynchronousRunner.java:730)
com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector@5af5b3ae -- Running DeadlockDetector[Exiting. No pending tasks.]

log4j.properties添加内容：

#c3p0  

log4j.logger.com.mchange.v2.async.ThreadPoolAsynchronousRunner = ERROR