Web App deployment error on Tomcat mark

Development of a test web app, deployed to the cloud server Tomat, always reported the following error, but the local debugging is not a problem, and later confirmed that web. XML is less webapprootkey defined, multiple project conflicts caused, mark.

28-apr-2016 11:00:01.152 SEVERE [localhost-startstop-10] Org.apache.catalina.core.ContainerBase.addChildInternal ContainerBase.addChild:start:
org.apache.catalina.LifecycleException:Failed to start component [Standardengine[catalina]. Standardhost[localhost]. Standardcontext[/mywebtest]]
At Org.apache.catalina.util.LifecycleBase.start (lifecyclebase.java:154)
At Org.apache.catalina.core.ContainerBase.addChildInternal (containerbase.java:725)
At Org.apache.catalina.core.ContainerBase.addChild (containerbase.java:701)
At Org.apache.catalina.core.StandardHost.addChild (standardhost.java:717)
At Org.apache.catalina.startup.HostConfig.deployWAR (hostconfig.java:940)
At Org.apache.catalina.startup.hostconfig$deploywar.run (hostconfig.java:1738)
At Java.util.concurrent.executors$runnableadapter.call (executors.java:511)
At Java.util.concurrent.FutureTask.run (futuretask.java:266)
At Java.util.concurrent.ThreadPoolExecutor.runWorker (threadpoolexecutor.java:1142)
At Java.util.concurrent.threadpoolexecutor$worker.run (threadpoolexecutor.java:617)
At Java.lang.Thread.run (thread.java:745)
caused by:org.apache.catalina.LifecycleException:Failed to start component [[email protected]
At Org.apache.catalina.util.LifecycleBase.start (lifecyclebase.java:154)
At Org.apache.catalina.core.StandardContext.resourcesStart (standardcontext.java:4844)
At Org.apache.catalina.core.StandardContext.startInternal (standardcontext.java:4974)
At Org.apache.catalina.util.LifecycleBase.start (lifecyclebase.java:150)
... Ten more
caused by:org.apache.catalina.LifecycleException:Failed to initialize component [[email protected]]
At Org.apache.catalina.util.LifecycleBase.init (lifecyclebase.java:106)
At Org.apache.catalina.util.LifecycleBase.start (lifecyclebase.java:139)
At Org.apache.catalina.webresources.StandardRoot.startInternal (standardroot.java:690)
At Org.apache.catalina.util.LifecycleBase.start (lifecyclebase.java:150)
... More
caused by:java.lang.IllegalArgumentException:java.util.zip.ZipException:error in opening zip file
At Org.apache.catalina.webresources.JarResourceSet.initInternal (jarresourceset.java:96)
At Org.apache.catalina.util.LifecycleBase.init (lifecyclebase.java:102)
... More
caused by:java.util.zip.ZipException:error in opening zip file
At Java.util.zip.ZipFile.open (Native Method)
At Java.util.zip.zipfile.<init> (zipfile.java:220)
At Java.util.zip.zipfile.<init> (zipfile.java:150)
At Java.util.jar.jarfile.<init> (jarfile.java:166)
At Java.util.jar.jarfile.<init> (jarfile.java:103)
At Org.apache.catalina.webresources.JarResourceSet.initInternal (jarresourceset.java:88)
... More

Different projects in Web. XML should define their own different webapprootkey values, which, if not defined, will default to "Webapp.root", causing a conflict.

<context-param>
<param-name>webAppRootKey</param-name>
<param-value>mywebtest.root</param-value>
</context-param>

Web App deployment error on Tomcat mark