apache - tomcat8 启动时报错

**求大神们帮助，
我的项目是在tomcat6的环境下开发的，并在tomcat6上面部署的
现在想换成版本较新的服务器tomcat8
现在在ubuntu的环境下部署好了tomcat8之后，可以登录tomcat的管理首页
我把编译好的项目放在webapps下面重新启动tomcat的时候出现了以下错误，希望大神指点一下，十分感谢。**
15-Apr-2016 16:56:01.916 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory /home/lee/taskmgr/apache-tomcat-8/webapps/ai
15-Apr-2016 16:56:02.383 SEVERE [localhost-startStop-1] org.apache.catalina.core.ContainerBase.addChildInternal ContainerBase.addChild: start: 
 org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/ai]]
        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.deployDirectory(HostConfig.java:1101)
        at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1786)
        at java.util.concurrent.Executors$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 [org.apache.catalina.webresources.StandardRoot@695cc4e]
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)
        at org.apache.catalina.core.StandardContext.resourcesStart(StandardContext.java:4845)
        at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:4975)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
        ... 10 more
Caused by: org.apache.catalina.LifecycleException: Failed to initialize component [org.apache.catalina.webresources.JarResourceSet@3b83cbac]
        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:699)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
        ... 13 more
Caused by: java.lang.IllegalArgumentException: java.util.zip.ZipException: invalid LOC header (bad signature)
        at org.apache.catalina.webresources.JarResourceSet.initInternal(JarResourceSet.java:96)
        at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:102)
        ... 16 more
Caused by: java.util.zip.ZipException: invalid LOC header (bad signature)
        at java.util.zip.ZipFile.read(Native Method)
        at java.util.zip.ZipFile.access$1400(ZipFile.java:60)
        at java.util.zip.ZipFile$ZipFileInputStream.read(ZipFile.java:716)
        at java.util.zip.ZipFile$ZipFileInflaterInputStream.fill(ZipFile.java:419)
        at java.util.zip.InflaterInputStream.read(InflaterInputStream.java:158)
        at sun.misc.IOUtils.readFully(IOUtils.java:65)
        at java.util.jar.JarFile.getBytes(JarFile.java:425)
        at java.util.jar.JarFile.getManifestFromReference(JarFile.java:193)
        at java.util.jar.JarFile.getManifest(JarFile.java:180)
        at org.apache.catalina.webresources.JarResourceSet.initInternal(JarResourceSet.java:94)
        ... 17 more

15-Apr-2016 16:56:02.388 SEVERE [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Error deploying web application directory /home/lee/taskmgr/apache-tomcat-8/webapps/ai
 java.lang.IllegalStateException: ContainerBase.addChild: start: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/ai]]
        at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:729)
        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.deployDirectory(HostConfig.java:1101)
        at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1786)
        at java.util.concurrent.Executors$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)

15-Apr-2016 16:56:02.393 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory /home/lee/taskmgr/apache-tomcat-8/webapps/ai has finished in 475 ms
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apache - tomcat8 启动时报错

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