Question

springboot+tomcat在eclipse中没问题。war包放到tomcat中报错

Caused by: org.springframework.jmx.export.UnableToRegisterMBeanException: Unable to register MBean [com.alibaba.druid.filter.stat.StatFilter@590ac60e] with key 'statFilter'; nested exception is javax.management.InstanceAlreadyExistsException: com.alibaba.druid.filter.stat:name=statFilter,type=StatFilter

Answer 1

把用到框架的所有jar包导入到项目的lib目录下，再重新导出war包，或者把那些jar包放到你所用的tomcat的lib目录下，重启tomcat