解决报错http11.Http11Protocol-auto-null Protocol handler instantiation failed

升级JDK1.8至JDK17报错 初始化组件[Connector[org.apache.coyote.http11.Http11AprProtocol-8002]]失败 启动tomcat9失败

修改 server.xml 中的 

protocol="org.apache.coyote.http11.Http11AprProtocol"

为

protocol="HTTP/1.1"