由于异常，Tomcat 7 无法在 EC2 实例上部署

Question

我已经根据以下内容构建了我的基座应用程序

https://github.com/pedestal/pedestal/blob/master/guides/documentation/service-war-deployment.md

然后我上传 .war 文件并部署它。

但是，当我 ssh 进入 ec2 实例时，我发现它没有成功部署，即使它这么说

INFO: At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs durin$ May 31, 2016 2:09:52 AM org.apache.catalina.core.ContainerBase addChildInternal SEVERE: ContainerBase.addChild: start: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[]]
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:153)
        at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:899)
        at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:875)
        at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:652)
        at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:1091)
        at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1980)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
        at java.util.concurrent.FutureTask.run(FutureTask.java:262)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:745) Caused by: java.lang.NoClassDefFoundError: org/apache/tomcat/util/descriptor/tld/TldParser
        at org.apache.jasper.servlet.TldScanner.<init>(TldScanner.java:86)
        at org.apache.jasper.servlet.JasperInitializer.newTldScanner(JasperInitializer.java:120)
        at org.apache.jasper.servlet.JasperInitializer.onStartup(JasperInitializer.java:101)
        at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5573)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147)
        ... 10 more Caused by: java.lang.ClassNotFoundException: org.apache.tomcat.util.descriptor.tld.TldParser
        at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1858)
        at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1701)
        ... 15 more

May 31, 2016 2:09:52 AM org.apache.catalina.startup.HostConfig deployWAR SEVERE: Error deploying web application archive /var/lib/tomcat7/webapps/ROOT.war java.lang.IllegalStateException: ContainerBase.addChild: start: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[]]
        at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:903)
        at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:875)
        at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:652)
        at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:1091)
        at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1980)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
        at java.util.concurrent.FutureTask.run(FutureTask.java:262)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:745)


May 31, 2016 2:09:52 AM org.apache.catalina.startup.HostConfig deployWAR INFO: Deployment of web application archive /var/lib/tomcat7/webapps/ROOT.war has finished in 6,440 ms 
May 31, 2016 2:09:52 AM org.apache.coyote.AbstractProtocol start INFO: Starting ProtocolHandler ["http-bio-8080"] 
May 31, 2016 2:09:52 AM org.apache.coyote.AbstractProtocol start INFO: Starting ProtocolHandler ["ajp-bio-8009"] 
May 31, 2016 2:09:52 AM org.apache.catalina.startup.Catalina start INFO: Server startup in 6530 ms

我认为这是特定于基座的，因为我成功部署了一个打包成 war 的 clojure ring web 应用程序，没有任何问题。

Answer 1

从堆栈跟踪来看，似乎缺少这个类：org/apache/tomcat/util/descriptor/tld/TldParser。

您提供的 uber-war 可能仍然包含 Tomcat 类。您链接到的说明以删除 Tomcat 依赖项：

[io.pedestal/pedestal.tomcat "0.1.0"] 

我猜 EC2 提供了它自己的 Tomcat，如果你没有提供任何冲突的类，你就不会得到那个错误。

您可以使用任何 zip/归档工具查看战争内部并确认您已完全删除 Tomcat：毕竟它只是一个 zip 文件。