Tomcat WAR部署创建404

Question

我使用Tomcat Manager进行部署。 每当我更改网站并编译一个新的.WAR （称为home.war ）并进行部署时，加载根URL时都会出现404错误 。

正确配置的http://schmud.de应该加载http://schmud.de/home/ 。

关键事实： 如果我重新启动Tomcat实例，则部署将正常工作。 如何避免这种情况？ 这是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 &quot;%r&quot; %s %b" />

  <Context path="" docBase="home" debug="0" reloadable="true" />

</Host>

我在Apache Tomcat / 7.0.42，JVM 1.7.0，Linux 2.6.32上。 这是一台cPanel机器。

编辑：经过长时间的延迟，我在本地重建了Tomcat计算机，因此我可以完全访问所有参数。 这是我的日志，在我取消部署然后重新部署同一应用程序时显示错误，导致404错误：

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从取消部署到重新部署-

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.client.providers.netty.NettyAsyncHttpProvider$ThreadLocalBoolean@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 [org.jboss.netty.util.CharsetUtil$1@6e49414c]) and a value of type [java.util.IdentityHashMap] (value [{US-ASCII=sun.nio.cs.US_ASCII$Encoder@6e14afdd}]) 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.client.providers.netty.NettyAsyncHttpProvider$ThreadLocalBoolean@288f896e]) and a value of type [java.lang.Boolean] (value [true]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
Feb 14, 2016 1:05:03 PM org.apache.catalina.core.StandardContext resourcesStart
SEVERE: Error starting static Resources
java.lang.IllegalArgumentException: Document base /var/lib/tomcat7/webapps/home does not exist or is not a readable directory
    at org.apache.naming.resources.FileDirContext.setDocBase(FileDirContext.java:136)
    at org.apache.catalina.core.StandardContext.resourcesStart(StandardContext.java:5089)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5269)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    at org.apache.catalina.core.StandardContext.reload(StandardContext.java:3988)
    at org.apache.catalina.loader.WebappLoader.backgroundProcess(WebappLoader.java:425)
    at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1345)
    at org.apache.catalina.core.ContainerBase$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

上面已经清楚地说明了这些错误，但是我对Tomcat的了解并不深，无法理解它们。

Answer 1

当您说重启服务器时，您是指tomcat实例还是盒子本身？ 以我的经验，在部署新版本时，应该重新启动Tomcat实例。 编写部署脚本来节省时间会更有利。