java - Apache Tomcat 在 "Initializing started..."后挂起

Question

以下是启动日志消息:

Check if Algo ant logger exists
Found Algo logger, starting with Algo ant logging
Buildfile: $ALGOWEBAPPS_HOME/bin/algowebapps-control.xml
Deleting:$ALGO_TOP/algowebapps/webapps/
        acm.war,acm470help.war,awl.war,dmcfg.war,Navigator.war,mdc.war,Visualizer.war
Copying 7 file to $ALGO_TOP/algowebapps/webapps
Deleting directory $ALGO_TOP/algowebapps/webapps/awl
Copying 1 file to $ALGO_TOP/algowebapps/webapps/ROOT
Sep 26, 2017 10:18:25 PM org.apache.catalina.core.AprLifecycleListener init
INFO: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path...
Sep 26, 2017 10:18:25 PM org.apache.coyote.http11.Http11Protocol init
INFO: Initializing Coyote HTTP/1.1 on http-12001
Sep 26, 2017 10:18:26 PM org.apache.coyote.http11.Http11Protocol init
INFO: Initializing Coyote HTTP/1.1 on http-8888
Sep 26, 2017 10:18:26 PM org.apache.catalina.startup.Catalina load
INFO: Initialization processed in 1145 ms
Sep 26, 2017 10:18:26 PM org.apache.catalina.core.StandardService start
INFO: Starting service Catalina
Sep 26, 2017 10:18:26 PM org.apache.catalina.core.StandardEngine start
INFO: Starting Servlet Engine: Apache Tomcat/6.0.32
Sep 26, 2017 10:18:26 PM org.apache.catalina.startup.HostConfig deployWAR
INFO: Deploying web application archive Navigator.war
Load details in $ALGO_TOP/algowebapps/webapps/Navigator//MetaTables.xml
        Loaded 11 tables & views
Load details of db jdbc:oracle:thin:@UAT4
Load details of db jdbc:oracle:thin:@UAT4
Sep 26, 2017 10:18:32 PM org.apache.catalina.startup.HostConfig deployWAR
INFO: Deploying web application archive mdc.war
Sep 26, 2017 10:18:32 PM org.apache.catalina.startup.HostConfig deployWAR
INFO: Deploying web application archive acm.war
INFO: GridServlet - ==> initializing GridServlet processing
INFO: TreeServlet - ==> initializing TreeServlet processing
==> initializing LoaderServlet
INFO: AjaxStoreServlet - ==> initializing AjaxStoreServlet processing
INFO: ConfigStoreServlet - ==> initializing ConfigStoreServlet processing
INFO: ActionDataServlet - ==> initializing Ricos HTTP Servlet Executer
INFO: ExecuterServlet2 - ==> initializing Ricos HTTP Servlet Executer
INFO: ValidationServlet - ==> initializing ValidationServlet processing
Sep 26, 2017 10:18:32 PM org.apache.catalina.startup.HostConfig deployWAR
INFO: Deploying web application archive acm470help.war
Sep 26, 2017 10:18:32 PM org.apache.catalina.startup.HostConfig deployWAR
INFO: Deploying web application archive awl.war
Sep 26, 2017 10:18:32 PM org.apache.catalina.startup.HostConfig deployWAR
INFO: Deploying web application archive dmcfg.war
2017-09-26 22:18:33,525 DEBUG [dmcfg] Installing into composite=com.algorithmics.log.provider.DailyLogFileProvider com.algorithmics.log.provider.CompositeLogProvider
2017-09-26 22:18:33,533 DEBUG [dmcfg] File path 'log' is relative - prepending ALGO_TOP=/opt/bns/alreu4/Algo/ALGO_TOP com.algorithmics.log.provider.DailyLogFileProvider
2017-09-26 22:18:33,534 DEBUG [dmcfg] Opening file '$ALGO_TOP/log/dmcfg-default-sbuvvrwm471-2017-09-26.log' om.algorithmics.log.provider.DailyLogFileProvider
2017-09-26 22:18:33,541 DEBUG [dmcfg] Installing into composite=com.algorithmics.log.provider.ConsoleLogProvider com.algorithmics.log.provider.CompositeLogProvider
Sep 26, 2017 10:18:36 PM org.apache.catalina.startup.HostConfig deployWAR
INFO: Deploying web application archive Visualizer.war
Initializing started...

<<<It hangs here indefinitely>>>

以下是正常启动时预期会发生的情况:

[[
Initializing finished...
Sep 26, 2017 10:37:48 PM org.apache.catalina.startup.HostConfig     deployDirectory
INFO: Deploying web application directory ROOT
Sep 26, 2017 10:37:48 PM org.apache.coyote.http11.Http11Protocol start
INFO: Starting Coyote HTTP/1.1 on http-12001
Sep 26, 2017 10:37:48 PM org.apache.coyote.http11.Http11Protocol start
INFO: Starting Coyote HTTP/1.1 on http-8443
Sep 26, 2017 10:37:48 PM org.apache.catalina.startup.Catalina start
INFO: Server startup in 7637 ms
]]

下载 Tomcat 源代码并启用 Tomcat Debug模式是确定此类问题根本原因的唯一选择吗？但是我无法访问在Tomcat中运行的那些应用程序的源代码(我可以反编译war文件中的jar文件，虽然这很繁琐)。或者可能有更好的方法来找出原因？

Answer 1

这似乎是部署的应用程序启动时出现的问题。您必须为应用程序启用调试日志记录并查看根本原因。