啟動tomcat時出現異常：
org.apache.catalina.LifecycleException: Failed to start component [Connector[AJP/1.3-auto-1]]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)
at org.apache.catalina.core.StandardService.startInternal(StandardService.java:458)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:752)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.startup.Catalina.start(Catalina.java:625)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:351)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:485)
Caused by: org.apache.catalina.LifecycleException: The connector cannot start since the specified port value of [-1] is invalid
at org.apache.catalina.connector.Connector.startInternal(Connector.java:979)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
... 11 more
報了異常，但tomcat還是啟動起來了，並且項目也可以訪問，沒發現其他異常，google了一下，說是這個異常可以被忽略，並不影響功能的使用，說是從安全層面避免其它服務或軟件關閉tomcat.可參考：https://kb.acronis.com/es/node/54707 ;有時間再研究一下這個異常......