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1、下载Apache Tomcat® - Apache Tomcat 8 Software Downloads

图中是8.5.100的版本，下面的设置用的是另一个版本的，其实是一样。

2、先将Server配好，然后再进行导入操作。

2、选择jdk

当然，这里也可以直接“Download and install..."来安装tomcat，第一次成功了，后来删除了，重新下载，就不行了。所以一开始直接下载了tomcat。

3、导入项目

直接cpu100%，然后崩了。试了几次，效果都一样，全都validating到20%的时候，就不动了。

4、然后将eclipse退出，重新打开eclipse，然后进行配制。

因为javascript引入的比较多，一般validate的时候就会cpu 100%，然后就崩了。

这里我们设置不检查javascript，让其跳过去。

5、然后对照着之前的旧项目环境，进行配制确认。

java build path也进行确认，设置与现有的环境一致。

再者，看看java compiler对不对：

6、开始运行，然后直接报错代码：

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[/YcgSvr]]at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:252)at java.util.concurrent.FutureTask.get(FutureTask.java:111)at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:939)at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:872)at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1419)at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1409)at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)at java.util.concurrent.FutureTask.run(FutureTask.java:166)at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)at java.lang.Thread.run(Thread.java:722)
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/YcgSvr]]at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:167)... 7 more
Caused by: org.apache.catalina.LifecycleException: Failed to start component [org.apache.catalina.webresources.StandardRoot@1cd000a]at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:167)at org.apache.catalina.core.StandardContext.resourcesStart(StandardContext.java:4860)at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:4995)at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)... 7 more
Caused by: org.apache.catalina.LifecycleException: Failed to initialize component [org.apache.catalina.webresources.JarResourceSet@84c1c3]at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:113)at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:140)at org.apache.catalina.webresources.StandardRoot.startInternal(StandardRoot.java:724)at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)... 10 more
Caused by: java.lang.IllegalArgumentException: java.util.zip.ZipException: error in opening zip fileat org.apache.catalina.webresources.AbstractSingleArchiveResourceSet.initInternal(AbstractSingleArchiveResourceSet.java:113)at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:107)... 13 more
Caused by: java.util.zip.ZipException: error in opening zip fileat java.util.zip.ZipFile.open(Native Method)at java.util.zip.ZipFile.<init>(ZipFile.java:214)at java.util.zip.ZipFile.<init>(ZipFile.java:144)at java.util.jar.JarFile.<init>(JarFile.java:152)at java.util.jar.JarFile.<init>(JarFile.java:89)at org.apache.catalina.webresources.AbstractSingleArchiveResourceSet.initInternal(AbstractSingleArchiveResourceSet.java:110)... 14 more六月 13, 2024 4:43:57 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]]at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:252)at java.util.concurrent.FutureTask.get(FutureTask.java:111)at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:939)at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262)at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)at org.apache.catalina.core.StandardService.startInternal(StandardService.java:422)at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:793)at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)at org.apache.catalina.startup.Catalina.start(Catalina.java:670)at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)at java.lang.reflect.Method.invoke(Method.java:601)at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:355)at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:495)
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost]]at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:167)at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1419)at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1409)at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)at java.util.concurrent.FutureTask.run(FutureTask.java:166)at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)at java.lang.Thread.run(Thread.java:722)
Caused by: org.apache.catalina.LifecycleException: A child container failed during startat org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:948)at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:872)at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)... 7 more六月 13, 2024 4:43:57 下午 org.apache.catalina.startup.Catalina start
严重: The required Server component failed to start so Tomcat is unable to start.
org.apache.catalina.LifecycleException: Failed to start component [StandardServer[8005]]at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:167)at org.apache.catalina.startup.Catalina.start(Catalina.java:670)at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)at java.lang.reflect.Method.invoke(Method.java:601)at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:355)at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:495)
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardService[Catalina]]at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:167)at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:793)at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)... 7 more
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina]]at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:167)at org.apache.catalina.core.StandardService.startInternal(StandardService.java:422)at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)... 9 more
Caused by: org.apache.catalina.LifecycleException: A child container failed during startat org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:948)at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262)at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)... 11 more

这里是看的日志：

报错代码如下：

!ENTRY org.eclipse.jst.jsf.common 4 0 2024-06-13 16:35:34.973
!MESSAGE Caught exception
!STACK 0
java.util.zip.ZipException: zip END header not foundat java.base/java.util.zip.ZipFile$Source.findEND(ZipFile.java:1469)at java.base/java.util.zip.ZipFile$Source.initCEN(ZipFile.java:1477)at java.base/java.util.zip.ZipFile$Source.<init>(ZipFile.java:1315)at java.base/java.util.zip.ZipFile$Source.get(ZipFile.java:1277)at java.base/java.util.zip.ZipFile$CleanableResource.<init>(ZipFile.java:709)at java.base/java.util.zip.ZipFile.<init>(ZipFile.java:243)at java.base/java.util.zip.ZipFile.<init>(ZipFile.java:172)at java.base/java.util.jar.JarFile.<init>(JarFile.java:347)at java.base/java.util.jar.JarFile.<init>(JarFile.java:318)at java.base/java.util.jar.JarFile.<init>(JarFile.java:284)at org.eclipse.jst.jsf.common.internal.resource.ClasspathJarFile.getJarFileFromCPE(ClasspathJarFile.java:110)at org.eclipse.jst.jsf.common.internal.resource.ClasspathJarFile.getJarFile(ClasspathJarFile.java:76)at org.eclipse.jst.jsf.designtime.internal.resources.JarBasedJSFResourceLocator.doLocate(JarBasedJSFResourceLocator.java:113)at org.eclipse.jst.jsf.designtime.internal.resources.AbstractJSFResourceLocator.doLocate(AbstractJSFResourceLocator.java:1)at org.eclipse.jst.jsf.common.internal.locator.AbstractLocator.locate(AbstractLocator.java:108)at org.eclipse.jst.jsf.facelet.core.internal.registry.taglib.CompositeComponentTaglibLocator.start(CompositeComponentTaglibLocator.java:200)at org.eclipse.jst.jsf.facelet.core.internal.registry.taglib.CompositeComponentTaglibLocator.start(CompositeComponentTaglibLocator.java:1)at org.eclipse.jst.jsf.facelet.core.internal.registry.taglib.ProjectTaglibDescriptor$1.run(ProjectTaglibDescriptor.java:84)at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45)at org.eclipse.jst.jsf.facelet.core.internal.registry.taglib.ProjectTaglibDescriptor.initialize(ProjectTaglibDescriptor.java:73)at org.eclipse.jst.jsf.facelet.core.internal.registry.taglib.ProjectTaglibDescriptor.getTagLibraries(ProjectTaglibDescriptor.java:119)at org.eclipse.jst.jsf.facelet.core.internal.registry.FaceletTagRegistry.initialize(FaceletTagRegistry.java:195)at org.eclipse.jst.jsf.facelet.core.internal.registry.FaceletTagRegistry.getAllTagLibraries(FaceletTagRegistry.java:141)at org.eclipse.jst.jsf.facelet.core.internal.registry.FaceletTagRegistry.getTagLibrary(FaceletTagRegistry.java:242)

我们进行jar包的目录，查看是否有隐藏的jar，应该是临时文件，然后进入到lib下把隐藏的jar删除。这个项目之前一直在维护，可能是之前机器上产生的。

再次运行可以了。

办法想了很多种，最后发现 import...也是可以的。

将遇到的问题及尝试，记录下：

1）创建新项目，将src，webcontent拷过去，然后运行一样的报错，这种情况其实是一样的。报错在于lib下有临时的jar包导致。

2）想将导入的项目删除，会报java heap问题，然后删除不了，只能结束eclipse。这个可以直接到workspace目录中将其删除，然后打开就是一个关闭的目录，然后删除就行。

3）在桌面的图标中加入

-nosplash -clean -vmargs -Xms2024M -Xmx2024M -XX:PermSize=1024M -XX:MaxPermSize=1024M

启动图是没有了，但是运行的时候，validation并不会好多少。