我正在使用嵌入式Tomcat创建Web应用程序。我尝试使用最新版本9（9.0.10），但是在服务器启动时，似乎无法在浏览器上运行。 Firefox表示无法连接Firefox无法在localhost：8080建立与服务器的连接。。没有错误日志。
但是，当将版本更改为8（8.5.32）时，它可以工作。我还注意到了他们的控制台日志之间的区别：
Tomcat 9.0.10：
Aug 16, 2018 2:19:46 PM org.apache.catalina.core.StandardContext setPath
WARNING: A context path must either be an empty string or start with a '/' and do not end with a '/'. The path [/] does not meet these criteria and has been changed to []
Aug 16, 2018 2:19:47 PM org.apache.catalina.core.StandardService startInternal
INFO: Starting service [Tomcat]
Aug 16, 2018 2:19:47 PM org.apache.catalina.core.StandardEngine startInternal
INFO: Starting Servlet Engine: Apache Tomcat/9.0.10
Aug 16, 2018 2:19:47 PM org.apache.catalina.startup.ContextConfig getDefaultWebXmlFragment
INFO: No global web.xml found
Aug 16, 2018 2:19:47 PM org.apache.jasper.servlet.TldScanner scanJars
INFO: At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
Tomcat 8.5.32：
Aug 16, 2018 2:41:32 PM org.apache.catalina.core.StandardContext setPath
WARNING: A context path must either be an empty string or start with a '/' and do not end with a '/'. The path [/] does not meet these criteria and has been changed to []
Aug 16, 2018 2:41:33 PM org.apache.coyote.AbstractProtocol init
INFO: Initializing ProtocolHandler ["http-nio-8080"]
Aug 16, 2018 2:41:33 PM org.apache.tomcat.util.net.NioSelectorPool getSharedSelector
INFO: Using a shared selector for servlet write/read
Aug 16, 2018 2:41:33 PM org.apache.catalina.core.StandardService startInternal
INFO: Starting service [Tomcat]
Aug 16, 2018 2:41:33 PM org.apache.catalina.core.StandardEngine startInternal
INFO: Starting Servlet Engine: Apache Tomcat/8.5.32
Aug 16, 2018 2:41:33 PM org.apache.catalina.startup.ContextConfig getDefaultWebXmlFragment
INFO: No global web.xml found
Aug 16, 2018 2:41:33 PM org.apache.jasper.servlet.TldScanner scanJars
INFO: At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
Aug 16, 2018 2:41:33 PM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["http-nio-8080"]
我注意到的两个主要区别是：
有人可以帮助我理解这些吗？谢谢。