【Tomcat】解决：AJP连接器配置secretRequired=“true“,但是属性secret确实空或者空字符串，这样的组合是无效的

tomcat报错内容如下

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25-Apr-2021 15:35:08.897 严重 [main] org.apache.catalina.core.StandardService.startInternal Failed to start connector [Connector[AJP/1.3-8017]]
org.apache.catalina.LifecycleException: 协议处理器启动失败
    at org.apache.catalina.connector.Connector.startInternal(Connector.java:1102)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    at org.apache.catalina.core.StandardService.startInternal(StandardService.java:440)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:766)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    at org.apache.catalina.startup.Catalina.start(Catalina.java:688)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:342)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:473)
Caused by: java.lang.IllegalArgumentException: AJP连接器配置secretRequired="true",但是属性secret确实空或者空字符串，这样的组合是无效的。
    at org.apache.coyote.ajp.AbstractAjpProtocol.start(AbstractAjpProtocol.java:274)
    at org.apache.catalina.connector.Connector.startInternal(Connector.java:1100)
    ... 12 more

解决方法

在tomcat的配置文件,server.xml中找到这一行

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<Connector  
    port="8009" 
    protocol="AJP/1.3" 
    redirectPort="8443" />

添加: secretRequired="" 即可

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<Connector  
    port="8009" 
    protocol="AJP/1.3" 
    redirectPort="8443" 
    secretRequired=""/>