A C3P0Registry mbean is already registered.This probably means that an application using c3p0的警告信息处理
系统在启动的时候c3p0报警告信息“AC3P0Registrymbeanisalreadyregistered.Thisprobablymeansthatanapplicationusingc3p0wasundeployed,butnotallPooledDataSourceswereclosedpriortoundeployment.Thismayleadtoresourceleaksovert