Java Tomcat启动，但在浏览器上显示为空白

我已经配置了一个tomcat应用程序

这是我的server.xml

当我启动tomcat时，它会给出：

Dec 08, 2015 1:50:40 PM org.apache.catalina.startup.SetAllPropertiesRule begin
WARNING: [SetAllPropertiesRule]{Server/Service/Connector} Setting property 'maxSpareThreads' to '50' did not find a matching property.
Dec 08, 2015 1:50:40 PM org.apache.catalina.startup.SetAllPropertiesRule begin
WARNING: [SetAllPropertiesRule]{Server/Service/Connector} Setting property 'maxSpareThreads' to '50' did not find a matching property.
Dec 08, 2015 1:50:40 PM org.apache.tomcat.util.digester.Digester endElement
WARNING:   No rules found matching 'Server/Service/Realm'.
Dec 08, 2015 1:50:40 PM org.apache.tomcat.util.digester.Digester endElement
WARNING:   No rules found matching 'Server/Service/Host'.
Dec 08, 2015 1:50:40 PM org.apache.coyote.AbstractProtocol init
INFO: Initializing ProtocolHandler ["http-nio-8491"]
Dec 08, 2015 1:50:40 PM org.apache.tomcat.util.net.NioSelectorPool getSharedSelector
INFO: Using a shared selector for servlet write/read
Dec 08, 2015 1:50:40 PM org.apache.coyote.AbstractProtocol init
INFO: Initializing ProtocolHandler ["http-nio-8492"]
Dec 08, 2015 1:50:40 PM org.apache.tomcat.util.net.NioSelectorPool getSharedSelector
INFO: Using a shared selector for servlet write/read
Dec 08, 2015 1:50:40 PM org.apache.catalina.startup.Catalina load
INFO: Initialization processed in 1482 ms
Dec 08, 2015 1:50:41 PM org.apache.catalina.core.StandardService startInternal
INFO: Starting service Nightfire-webapps
Dec 08, 2015 1:50:41 PM org.apache.catalina.core.StandardEngine startInternal
INFO: Starting Servlet Engine: Apache Tomcat/8.0.24
Dec 08, 2015 1:50:41 PM org.apache.catalina.mapper.MapperListener findDefaultHost
WARNING: Unknown default host [localhost] for service [StandardService[Nightfire-webapps]]
Dec 08, 2015 1:50:41 PM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["http-nio-8491"]
Dec 08, 2015 1:50:41 PM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["http-nio-8492"]
Dec 08, 2015 1:50:41 PM org.apache.catalina.startup.Catalina start
INFO: Server startup in 173 ms

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但是浏览器显示空白页

您能否提供有关Tomcat版本、操作系统、安装算法（手动或自动）的更多信息？您在浏览器上键入什么？如果使用默认的Tomcat设置，可以尝试

http://localhost:8080

。至少应该显示Tomcat默认页面