强制关了myeclipse后之前打开是好的web现在打开总是404怎么处理

强制关了myeclipse后之前打开是好的web现在打开总是404怎么办
强制关了myeclipse后之前打开是好的web现在打开总是404怎么办，本来还好好的就是我嫌弃它太慢了就强关了一次，怎么办~~再也不要强关myeclipseT-T

运行起myeclipse中的项目后，连localhost:8080都打不开
2015-4-2220:28:01org.apache.catalina.core.AprLifecycleListenerinit
信息:TheApacheTomcatNativelibrarywhichallowsoptimalperformanceinproductionenvironmentswasnotfoundonthejava.library.path:D:myeclipsebinarycom.sun.java.jdk.win32.x86_1.6.0.013bin;D:myeclipsepluginscom.genuitec.eclipse.easie.tomcat.myeclipse_8.5.0.me201003121946tomcatbin
2015-4-2220:28:01org.apache.coyote.http11.Http11Protocolinit
信息:InitializingCoyoteHTTP/1.1onhttp-8080
2015-4-2220:28:01org.apache.catalina.startup.Catalinaload
信息:Initializationprocessedin498ms
2015-4-2220:28:01org.apache.catalina.core.StandardServicestart
信息:StartingserviceCatalina
2015-4-2220:28:01org.apache.catalina.core.StandardEnginestart
信息:StartingServletEngine:ApacheTomcat/6.0.13
2015-4-2220:28:03org.apache.tomcat.util.digester.DigesterfatalError
严重:ParseFatalErroratline334column4:Theelementtype"web-app"mustbeterminatedbythematchingend-tag"</web-app>".
org.xml.sax.SAXParseException:Theelementtype"web-app"mustbeterminatedbythematchingend-tag"</web-app>".
atorg.apache.xerces.util.ErrorHandlerWrapper.createSAXParseException(UnknownSource)
atorg.apache.xerces.util.ErrorHandlerWrapper.fatalError(UnknownSource)
atorg.apache.xerces.impl.XMLErrorReporter.reportError(UnknownSource)
atorg.apache.xerces.impl.XMLErrorReporter.reportError(UnknownSource)
atorg.apache.xerces.impl.XMLScanner.reportFatalError(UnknownSource)
atorg.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanEndElement(UnknownSource)
atorg.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(UnknownSource)
atorg.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(UnknownSource)
atorg.apache.xerces.parsers.XML11Configuration.parse(UnknownSource)
atorg.apache.xerces.parsers.DTDConfiguration.parse(UnknownSource)
atorg.apache.xerces.parsers.XMLParser.parse(UnknownSource)
atorg.apache.xerces.parsers.AbstractSAXParser.parse(UnknownSource)
atorg.apache.tomcat.util.digester.Digester.parse(Digester.java:1562)
atorg.apache.catalina.startup.ContextConfig.applicationWebConfig(ContextConfig.java:369)
atorg.apache.catalina.startup.ContextConfig.start(ContextConfig.java:1062)
atorg.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:261)
atorg.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)
atorg.apache.catalina.core.StandardContext.start(StandardContext.java:4236)
atorg.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)
atorg.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
atorg.apache.catalina.core.StandardHost.addChild(StandardHost.java:525)
atorg.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:920)
atorg.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:883)
atorg.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:492)
atorg.apache.catalina.startup.HostConfig.start(HostConfig.java:1138)
atorg.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311)
atorg.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)
atorg.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
atorg.apache.catalina.core.StandardHost.start(StandardHost.java:719)
atorg.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
atorg.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
atorg.apache.catalina.core.StandardService.start(StandardService.java:516)
atorg.apache.catalina.core.StandardServer.start(StandardServer.java:710)
atorg.apache.catalina.startup.Catalina.start(Catalina.java:566)
atsun.reflect.NativeMethodAccessorImpl.invoke0(NativeMethod)
atsun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
atsun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
atjava.lang.reflect.Method.invoke(Method.java:597)
atorg.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)
atorg.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)
2015-4-2220:28:03org.apache.catalina.startup.ContextConfigapplicationWebConfig
严重:Parseerrorinapplicationweb.xmlfileatjndi:/localhost/ylx/WEB-INF/web.xml
org.xml.sax.SAXParseException:Theelementtype"web-app"mustbeterminatedbythematchingend-tag
------解决思路----------------------
你的web.xml文件不符合xml格式
------解决思路----------------------
tomcat部署问题，重新部署项目。