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我使用Tomcat Manager進行部署。無論何時我修改網站並編譯一個新的.WAR（稱爲home.war）並進行部署，當我加載根URL時，我會收到一個404錯誤。Tomcat WAR部署會創建一個404
正確配置，http://schmud.de應加載http://schmud.de/home/。
關鍵事實：如果我重新啓動Tomcat實例，則部署將正常工作。我該如何避免這種情況？這裏是server.xml的<host>配置：
<Host name="localhost" appBase="webapps" unpackWARs="true" autoDeploy="false">
<!-- SingleSignOn valve, share authentication between web applications Documentation at: /docs/config/valve.html -->
<!-- <Valve className="org.apache.catalina.authenticator.SingleSignOn" /> -->
<!-- Access log processes all example.
Documentation at: /docs/config/valve.html
Note: The pattern used is equivalent to using pattern="common" -->
<Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"
prefix="localhost_access" suffix=".log" rotatable="false"
pattern="%h %l %u %t "%r" %s %b" />
<Context path="" docBase="home" debug="0" reloadable="true" />
</Host>
我在Apache Tomcat/7.0.42，JVM 1.7.0，Linux的2.6.32。這是一個cPanel機器。
編輯：經過長時間的延遲，我在本地重建了Tomcat機器，因此我可以完全訪問所有參數。這裏是我的日誌顯示錯誤，當我取消部署，然後重新部署相同的應用程序，導致404錯誤：
tomcat7/localhost.2016-02-14.log，取消部署和重新部署 -
Feb 14, 2016 1:04:59 PM org.apache.catalina.core.ApplicationContext log
INFO: HTMLManager: undeploy: Undeploying web application at '/home'
Feb 14, 2016 1:05:00 PM org.apache.catalina.core.ApplicationContext log
INFO: HTMLManager: list: Listing contexts for virtual host 'localhost'
Feb 14, 2016 1:06:44 PM org.apache.catalina.core.ApplicationContext log
INFO: HTMLManager: list: Listing contexts for virtual host 'localhost'
tomcat7/catalina.2016-02-14.log從取消部署重新部署 -
Feb 14, 2016 1:05:00 PM org.apache.catalina.startup.HostConfig undeploy
INFO: Undeploying context [/home]
Feb 14, 2016 1:05:03 PM org.apache.catalina.loader.WebappClassLoader modified
SEVERE: Resource '/WEB-INF/lib/args4j-2.0.26.jar' is missing
Feb 14, 2016 1:05:03 PM org.apache.catalina.core.StandardContext reload
INFO: Reloading Context with name [] has started
Feb 14, 2016 1:05:03 PM org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
SEVERE: The web application [] appears to have started a thread named [Timer-0] but has failed to stop it. This is very likely to create a memory leak.
Feb 14, 2016 1:05:03 PM org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
SEVERE: The web application [] appears to have started a thread named [New I/O worker #1] but has failed to stop it. This is very likely to create a memory leak.
Feb 14, 2016 1:05:03 PM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
SEVERE: The web application [] created a ThreadLocal with key of type [com.ning.http.client.providers.netty.NettyAsyncHttpProvider.ThreadLocalBoolean] (value [com.ning.http.c[email protected]288f896e]) and a value of type [java.lang.Boolean] (value [false]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
Feb 14, 2016 1:05:03 PM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
SEVERE: The web application [] created a ThreadLocal with key of type [org.jboss.netty.util.CharsetUtil$1] (value [[email protected]]) and a value of type [java.util.IdentityHashMap] (value [{[email protected]}]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
Feb 14, 2016 1:05:03 PM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
SEVERE: The web application [] created a ThreadLocal with key of type [com.ning.http.client.providers.netty.NettyAsyncHttpProvider.ThreadLocalBoolean] (value [com.ning.http.c[email protected]288f896e]) and a value of type [java.lang.Boolean] (value [true]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
Feb 14, 2016 1:05:03 PM org.apache.catalina.core.StandardContext resourcesStart
SEVERE: Error starting static Resources
java.lang.IllegalArgumentException: Document base /var/lib/tomcat7/webapps/home does not exist or is not a readable directory
at org.apache.naming.resources.FileDirContext.setDocBase(FileDirContext.java:136)
at org.apache.catalina.core.StandardContext.resourcesStart(StandardContext.java:5089)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5269)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.StandardContext.reload(StandardContext.java:3988)
at org.apache.catalina.loader.WebappLoader.backgroundProcess(WebappLoader.java:425)
at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1345)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1530)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1540)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1540)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1519)
at java.lang.Thread.run(Thread.java:745)
Feb 14, 2016 1:05:03 PM org.apache.catalina.core.StandardContext reload
SEVERE: Exception starting Context with name []
org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[]]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)
at org.apache.catalina.core.StandardContext.reload(StandardContext.java:3988)
at org.apache.catalina.loader.WebappLoader.backgroundProcess(WebappLoader.java:425)
at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1345)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1530)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1540)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1540)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1519)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.apache.catalina.LifecycleException: Error in resourceStart()
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5270)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
... 8 more
Feb 14, 2016 1:05:03 PM org.apache.catalina.core.StandardContext reload
INFO: Reloading Context with name [] is completed
Feb 14, 2016 1:06:20 PM org.apache.catalina.startup.HostConfig deployWAR
INFO: Deploying web application archive /var/lib/tomcat7/webapps/home.war
上面清楚地說明了這些錯誤，但我對Tomcat的理解並不夠熟悉。
你的webapps/look怎麼樣？在部署之前，您是否刪除了ROOT.war？你有沒有檢查你的日誌重新部署時會發生什麼？ – Jan
@Jan - ROOT.war被刪除。經過長時間的延遲，我已經添加了上面的日誌。顯然有一個錯誤。我不知道該怎麼做。 –