Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/dao]]

maven管理jar包，tomcat启动的时候，一直报错：Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/dao]]

十一月 10, 2017 3:04:11 下午 org.apache.catalina.core.ContainerBase startInternal
严重: A child container failed during start
java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/dao]]
	at java.util.concurrent.FutureTask.report(Unknown Source)
	at java.util.concurrent.FutureTask.get(Unknown Source)
	at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:943)
	at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:871)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1408)
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1398)
	at java.util.concurrent.FutureTask.run(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/dao]]
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:162)
	... 6 more
Caused by: org.apache.catalina.LifecycleException: Failed to start component [org.apache.catalina.webresources.StandardRoot@5504e0d4]
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:162)
	at org.apache.catalina.core.StandardContext.resourcesStart(StandardContext.java:4969)
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5102)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
	... 6 more
Caused by: org.apache.catalina.LifecycleException: Failed to initialize component [org.apache.catalina.webresources.JarResourceSet@17217302]
	at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:107)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:135)
	at org.apache.catalina.webresources.StandardRoot.startInternal(StandardRoot.java:722)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
	... 9 more
Caused by: java.lang.IllegalArgumentException: java.util.zip.ZipException: invalid LOC header (bad signature)
	at org.apache.catalina.webresources.AbstractSingleArchiveResourceSet.initInternal(AbstractSingleArchiveResourceSet.java:113)
	at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:102)
	... 12 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$1400(Unknown Source)
	at java.util.zip.ZipFile$ZipFileInputStream.read(Unknown Source)
	at java.util.zip.ZipFile$ZipFileInflaterInputStream.fill(Unknown Source)
	at java.util.zip.InflaterInputStream.read(Unknown Source)
	at sun.misc.IOUtils.readFully(Unknown Source)
	at java.util.jar.JarFile.getBytes(Unknown Source)
	at java.util.jar.JarFile.getManifestFromReference(Unknown Source)
	at java.util.jar.JarFile.getManifest(Unknown Source)
	at org.apache.catalina.webresources.AbstractSingleArchiveResourceSet.initInternal(AbstractSingleArchiveResourceSet.java:111)
	... 13 more

怎么解决了，看了网上的web.xml等，测试了很多都没用，看到别人说jar的问题，最后测试发现是mysql的依赖包有问题。只要加入这个包就报错。

 
	    
	        mysql
	        mysql-connector-java
	        5.1.35
	      

但是始终想不出问题，最后我看了以前的项目，我以前的mysql的jar包是5.0.4的版本。最后修改了版本号，tomcat就可以启动了，运行正常。

所以最后总结是：1、jar包冲突   2、jar的版本问题。

我是第一次用maven管理项目之类的，所以很多的依赖都是网上copy的，版本号也没有研究，还有以上是拙见，能帮到大家很好，有错误也希望大家指正。