部署專案的時候，重啟tomcat，死活起不來，很鬱悶，網上巴拉了半天，結合自己的情況，找到了原因；

錯誤日誌資訊：

2018-12-13 13:52:26,992 [main] INFO  org.apache.catalina.core.AprLifecycleListener- The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: /usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib
 
2018-12-13 13:52:27,052 [main] WARN  org.apache.tomcat.util.digester.Digester- [SetAllPropertiesRule]{Server/Service/Connector} Setting property 'maxSpareThreads' to '512' did not find a matching property.
2018-12-13 13:52:27,394 [main] INFO  org.apache.coyote.http11.Http11NioProtocol- Initializing ProtocolHandler ["http-nio-2015"]
 
2018-12-13 13:52:27,685 [main] INFO  org.apache.tomcat.util.net.NioSelectorPool- Using a shared selector for servlet write/read
2018-12-13 13:52:27,688 [main] INFO  org.apache.coyote.http11.Http11Protocol- Initializing ProtocolHandler ["http-bio-9094"]
2018-12-13 13:52:27,695 [main] INFO  org.apache.catalina.startup.Catalina- Initialization processed in 976 ms
 
2018-12-13 13:52:27,732 [main] INFO  org.apache.catalina.core.StandardService- Starting service Catalina
2018-12-13 13:52:27,732 [main] INFO  org.apache.catalina.core.StandardEngine- Starting Servlet Engine: ONIP SOABean OpenAS V300R002C50SPC100
2018-12-13 13:52:27,796 [localhost-startStop-1] ERROR org.apache.catalina.core.StandardContext- Error starting static Resources
java.lang.IllegalArgumentException: Document base /home/duiba/apache-tomcat/webapps/../webapps/manager does not exist or is not a readable directory
        at org.apache.naming.resources.FileDirContext.setDocBase(FileDirContext.java:138)
        at org.apache.catalina.core.StandardContext.resourcesStart(StandardContext.java:4912)
        at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5092)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
        at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1517)
        at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1508)
        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)
2018-12-13 13:52:27,800 [localhost-startStop-1] ERROR org.apache.catalina.core.StandardContext- Error in resourceStart()
2018-12-13 13:52:27,822 [localhost-startStop-1] ERROR org.apache.catalina.core.StandardContext- Error getConfigured
2018-12-13 13:52:27,823 [localhost-startStop-1] ERROR org.apache.catalina.core.StandardContext- Context [/manager] startup failed due to previous errors
2018-12-13 13:52:27,923 [localhost-startStop-1] INFO  org.apache.catalina.loader.WebappClassLoader- validateJarFile(/home/duiba/apache-tomcat/webapps/duiba/WEB-INF/lib/servlet-api-1.0.jar) - jar not loaded. See Servlet Spec 2.3, section 9.7.2. Offending class: javax/servlet/Servlet.class

　　分析原因：原來是因為我自己的原因，為了把原來的東西個刪除乾淨，我把tomcat自帶的manager目錄也給刪除了，這就尷尬了，啟動的時候就一直有這個錯誤的日誌資訊在列印（事實上，這個錯誤並不影響程式的執行），但是日誌一直有Error還是不好的，我就把其他模組的manager給複製了一份，並傳到了改伺服器上，然後重新啟動服務，啟動成功了！感覺下次要小心了，不能亂刪東西啊！