Apache Tomcat/8.5.42启动报错-[SetAllPropertiesRule]{Server/Service/Connector} Setting property 'maxSpareThreads'

今天部署项目时，启动tomcat8初始化失败，日志如下：

十二月 23, 2020 4:45:07 下午 org.apache.catalina.startup.SetAllPropertiesRule begin
警告: [SetAllPropertiesRule]{Server/Service/Connector} Setting property 'maxSpareThreads' to '750' did not find a matching property.
十二月 23, 2020 4:45:07 下午 org.apache.catalina.startup.SetAllPropertiesRule begin
警告: [SetAllPropertiesRule]{Server/Service/Connector} Setting property 'minSpareTHreads' to '50' did not find a matching property.
INFO 2020-12-23 16:45:08:017 com.jd.pfinder.profiler.service.impl.PluginRegistrar [ main ] : enhance class org.apache.catalina.core.StandardHostValve by tomcatV7V8
十二月 23, 2020 4:45:08 下午 org.apache.tomcat.util.digester.SetPropertiesRule begin
警告: [SetPropertiesRule]{Server/Service/Engine/Host} Setting property 'xmlValidation' to 'false' did not find a matching property.
十二月 23, 2020 4:45:08 下午 org.apache.tomcat.util.digester.SetPropertiesRule begin
警告: [SetPropertiesRule]{Server/Service/Engine/Host} Setting property 'xmlNamespaceAware' to 'false' did not find a matching property.
十二月 23, 2020 4:45:08 下午 org.apache.catalina.startup.VersionLoggerListener log
信息: Server version:        Apache Tomcat/8.5.42

解决方案：

1、切换部署到tomcat7，再启动项目，启动成功。

2、网上有另一个解决方案，可参考 ：  

具体方法如下：

server.xml中的配置HTTPS的那部分Connector代码

<Connector port="8080"

protocol="HTTP/1.1"   //---------修改这行

。。。。。。。。

。。。。。。。。
 connectionTimeout="20000"
  redirectPort="8443" />

修改后：

<Connector port="8080"

protocol="org.apache.coyote.http11.Http11Protocol"  //-------------------填写完整的protocol 协议
connectionTimeout="20000"
 redirectPort="8443" />

 

即将protocol参数由"HTTP/1.1"改成"org.apache.coyote.http11.Http11Protocol"，重新启动Tomcat

 

备注：

     官方表达： http://tomcat.apache.org/tomcat-8.0-doc/config/http.html