-------------------------------------------- On Sat, 3/17/18, Konstantin Kolinko <knst.koli...@gmail.com> wrote:
Subject: Re: Tomcat stopped and Debug can't be done in Eclipse To: "Tomcat Users List" <users@tomcat.apache.org> Date: Saturday, March 17, 2018, 10:25 PM /Hi! 2018-03-17 10:11 GMT+03:00 Karen Goh <karenwo...@yahoo.com>: > > I have added this in my JVM under the tomcat argument for remote debug configuration : > > -Dcatalina.opts="-agentlib:jdwp=transport=dt_socket,address=8000,server=y,suspend=n" The above line is wrong. There is no system property "catalina.opts". Those arguments are for java (java.exe, javaw.exe). https://docs.oracle.com/javase/8/docs/technotes/tools/windows/java.html#BABDJJFI Thanks Konstantin for giving me quite a clear detail on how to do the actual debugging. The thing is that I am constantly getting 404 with certain occasion able to get the tutorRegister page being displayed so I think there is still something not quite right in the setting or something else I don't know. I'd like to check with you is it a good idea to have this line at the System Variables(this is the Advanced System Setting at Windows 10) hard coded there ? CATALINA_OPTS -Xdebug -Xrunjdwp:transport=dt_socket,address=8000, server=y, suspend=n Note that "Remote" debugging means that you do two steps: 1. First, you start Tomcat as a normal "running" application. If you do it from within Eclipse, use "Run", not "Debug". See menu Run > Run Configurations... Add those options to its "Arguments" into "VM arguments" field (not "Program arguments") -agentlib:jdwp=transport=dt_socket,address=8000,server=y,suspend=n 2. Then, you start "Debug" separately. See menu Run > Debug Configurations... Create "Remote Java Application". Fill in "Project" (your project), "Port" (8000) fields and press "Debug" to start debugging. Eclipse will connect to Tomcat that has been started separately. > Below, it shows that Tomcat is started > > Mar 17, 2018 2:33:29 PM org.apache.tomcat.util.digester.SetPropertiesRule begin > WARNING: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.jee.server:Hi5S' did not find a matching property. > Mar 17, 2018 2:33:29 PM org.apache.catalina.startup.VersionLoggerListener log > INFO: Server version: Apache Tomcat/8.5.24 > Mar 17, 2018 2:33:29 PM org.apache.catalina.startup.VersionLoggerListener log > INFO: Server built: Nov 27 2017 13:05:30 UTC > Mar 17, 2018 2:33:29 PM org.apache.catalina.startup.VersionLoggerListener log > INFO: Server number: 8.5.24.0 > Mar 17, 2018 2:33:29 PM org.apache.catalina.startup.VersionLoggerListener log > INFO: OS Name: Windows 10 > Mar 17, 2018 2:33:29 PM org.apache.catalina.startup.VersionLoggerListener log > INFO: OS Version: 10.0 > Mar 17, 2018 2:33:29 PM org.apache.catalina.startup.VersionLoggerListener log > INFO: Architecture: amd64 > Mar 17, 2018 2:33:29 PM org.apache.catalina.startup.VersionLoggerListener log > INFO: Java Home: C:\Program Files\Java\jre1.8.0_161 > Mar 17, 2018 2:33:29 PM org.apache.catalina.startup.VersionLoggerListener log > INFO: JVM Version: 1.8.0_161-b12 > Mar 17, 2018 2:33:29 PM org.apache.catalina.startup.VersionLoggerListener log > INFO: JVM Vendor: Oracle Corporation > Mar 17, 2018 2:33:29 PM org.apache.catalina.startup.VersionLoggerListener log > INFO: CATALINA_BASE: C:\Users\Karen.Goh\workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp2 > Mar 17, 2018 2:33:29 PM org.apache.catalina.startup.VersionLoggerListener log > INFO: CATALINA_HOME: C:\Program Files\Apache\apache-tomcat-8.5.24 > Mar 17, 2018 2:33:29 PM org.apache.catalina.startup.VersionLoggerListener log > INFO: Command line argument: -agentlib:jdwp=transport=dt_socket,suspend=y,address=localhost:50906 Note the above line. A command line argument, logged by VersionLoggerListener . > Mar 17, 2018 2:33:29 PM org.apache.catalina.startup.VersionLoggerListener log > INFO: Command line argument: -Dcatalina.base=C:\Users\Karen.Goh\workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp2 > Mar 17, 2018 2:33:29 PM org.apache.catalina.startup.VersionLoggerListener log > INFO: Command line argument: -Dcatalina.home=C:\Program Files\Apache\apache-tomcat-8.5.24 > Mar 17, 2018 2:33:29 PM org.apache.catalina.startup.VersionLoggerListener log > INFO: Command line argument: -Dwtp.deploy=C:\Users\Karen.Goh\workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp2\wtpwebapps > Mar 17, 2018 2:33:29 PM org.apache.catalina.startup.VersionLoggerListener log > INFO: Command line argument: -Djava.endorsed.dirs=C:\Program Files\Apache\apache-tomcat-8.5.24\endorsed > Mar 17, 2018 2:33:29 PM org.apache.catalina.startup.VersionLoggerListener log > INFO: Command line argument: -Dcatalina.opts=-agentlib:jdwp=transport=dt_socket,address=8000,server=y,suspend=n Note the above line. That is what you added. > Mar 17, 2018 2:33:29 PM org.apache.catalina.startup.VersionLoggerListener log > INFO: Command line argument: -Dfile.encoding=UTF-8 > Mar 17, 2018 2:33:29 PM org.apache.catalina.core.AprLifecycleListener lifecycleEvent > INFO: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: [C:\Program Files\Java\jre1.8.0_161\bin;C:\WINDOWS\Sun\Java\bin;C:\WINDOWS\system32;C:\WINDOWS;C:/Program Files/Java/jre1.8.0_161/bin/server;C:/Program Files/Java/jre1.8.0_161/bin;C:/Program Files/Java/jre1.8.0_161/lib/amd64;C:\ProgramData\Oracle\Java\javapath;C:\Program Files\MySQL\mysql-5.7.20-win32\bin;C:\Program Files\Java\jdk1.8.0_151\bin;C:\Program Files (x86)\Eclipse JEE IDE\eclipse;;.] > Mar 17, 2018 2:33:30 PM org.apache.coyote.AbstractProtocol init > INFO: Initializing ProtocolHandler ["http-nio-8080"] > Mar 17, 2018 2:33:31 PM org.apache.tomcat.util.net.NioSelectorPool getSharedSelector > INFO: Using a shared selector for servlet write/read > Mar 17, 2018 2:33:31 PM org.apache.coyote.AbstractProtocol init > INFO: Initializing ProtocolHandler ["ajp-nio-8009"] > Mar 17, 2018 2:33:31 PM org.apache.tomcat.util.net.NioSelectorPool getSharedSelector > INFO: Using a shared selector for servlet write/read > Mar 17, 2018 2:33:31 PM org.apache.catalina.startup.Catalina load > INFO: Initialization processed in 4380 ms > Mar 17, 2018 2:33:31 PM org.apache.catalina.core.StandardService startInternal > INFO: Starting service [Catalina] > Mar 17, 2018 2:33:31 PM org.apache.catalina.core.StandardEngine startInternal > INFO: Starting Servlet Engine: Apache Tomcat/8.5.24 > Mar 17, 2018 2:33:33 PM org.apache.jasper.servlet.TldScanner scanJars > 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 during scanning can improve startup time and JSP compilation time. > Mar 17, 2018 2:33:43 PM org.apache.jasper.servlet.TldScanner scanJars > 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 during scanning can improve startup time and JSP compilation time. > 2018-03-17 14:33:45,175 localhost-startStop-1 DEBUG Starting LoggerContext[name=/Hi5S] from configuration at file:/C:/Users/Karen.Goh/workspace/.metadata/.plugins/org.eclipse.wst.server.core/tmp2/wtpwebapps/Hi5S/WEB-INF/log4j2.xml > 2018-03-17 14:33:45,190 localhost-startStop-1 DEBUG Starting LoggerContext[name=/Hi5S, org.apache.logging.log4j.core.LoggerContext@64c0cbaa] with configuration XmlConfiguration[location=C:\Users\Karen.Goh\workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp2\wtpwebapps\Hi5S\WEB-INF\log4j2.xml]... > 2018-03-17 14:33:45,190 localhost-startStop-1 DEBUG Shutdown hook enabled. Registering a new one. > 2018-03-17 14:33:45,205 localhost-startStop-1 DEBUG Initializing configuration XmlConfiguration[location=C:\Users\Karen.Goh\workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp2\wtpwebapps\Hi5S\WEB-INF\log4j2.xml] > 2018-03-17 14:33:45,221 localhost-startStop-1 DEBUG Installed 1 script engine > 2018-03-17 14:33:46,565 localhost-startStop-1 DEBUG Oracle Nashorn version: 1.8.0_161, language: ECMAScript, threading: Not Thread Safe, compile: true, names: [nashorn, Nashorn, js, JS, JavaScript, javascript, ECMAScript, ecmascript], factory class: jdk.nashorn.api.scripting.NashornScriptEngineFactory > 2018-03-17 14:33:46,570 localhost-startStop-1 DEBUG PluginManager 'Core' found 117 plugins > 2018-03-17 14:33:46,571 localhost-startStop-1 DEBUG PluginManager 'Level' found 0 plugins > 2018-03-17 14:33:46,588 localhost-startStop-1 DEBUG PluginManager 'Lookup' found 14 plugins > 2018-03-17 14:33:46,604 localhost-startStop-1 DEBUG Building Plugin[name=layout, class=org.apache.logging.log4j.core.layout.PatternLayout]. > 2018-03-17 14:33:46,682 localhost-startStop-1 DEBUG PluginManager 'TypeConverter' found 26 plugins > 2018-03-17 14:33:46,822 localhost-startStop-1 DEBUG PatternLayout$Builder(pattern="%-5p [%t]: %m%n", PatternSelector=null, Configuration(C:\Users\Karen.Goh\workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp2\wtpwebapps\Hi5S\WEB-INF\log4j2.xml), Replace=null, charset="null", alwaysWriteExceptions="null", disableAnsi="null", noConsoleNoAnsi="null", header="null", footer="null") > 2018-03-17 14:33:46,838 localhost-startStop-1 DEBUG PluginManager 'Converter' found 42 plugins > 2018-03-17 14:33:46,838 localhost-startStop-1 DEBUG Building Plugin[name=appender, class=org.apache.logging.log4j.core.appender.ConsoleAppender]. > 2018-03-17 14:33:46,916 localhost-startStop-1 DEBUG ConsoleAppender$Builder(target="SYSTEM_OUT", follow="null", direct="null", bufferedIo="null", bufferSize="null", immediateFlush="null", ignoreExceptions="null", PatternLayout(%-5p [%t]: %m%n), name="STDOUT", Configuration(C:\Users\Karen.Goh\workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp2\wtpwebapps\Hi5S\WEB-INF\log4j2.xml), Filter=null) > 2018-03-17 14:33:46,932 localhost-startStop-1 DEBUG Starting OutputStreamManager SYSTEM_OUT.false.false > 2018-03-17 14:33:46,932 localhost-startStop-1 DEBUG Building Plugin[name=appenders, class=org.apache.logging.log4j.core.config.AppendersPlugin]. > 2018-03-17 14:33:46,947 localhost-startStop-1 DEBUG createAppenders(={STDOUT}) > 2018-03-17 14:33:46,947 localhost-startStop-1 DEBUG Building Plugin[name=appender-ref, class=org.apache.logging.log4j.core.config.AppenderRef]. > 2018-03-17 14:33:47,010 localhost-startStop-1 DEBUG createAppenderRef(ref="STDOUT", level="INFO", Filter=null) > 2018-03-17 14:33:47,025 localhost-startStop-1 DEBUG Building Plugin[name=logger, class=org.apache.logging.log4j.core.config.LoggerConfig]. > 2018-03-17 14:33:47,025 localhost-startStop-1 DEBUG createLogger(additivity="false", level="INFO", name="Business.RegisterService", includeLocation="null", ={STDOUT}, ={}, Configuration(C:\Users\Karen.Goh\workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp2\wtpwebapps\Hi5S\WEB-INF\log4j2.xml), Filter=null) > 2018-03-17 14:33:47,057 localhost-startStop-1 DEBUG Building Plugin[name=appender-ref, class=org.apache.logging.log4j.core.config.AppenderRef]. > 2018-03-17 14:33:47,057 localhost-startStop-1 DEBUG createAppenderRef(ref="STDOUT", level="INFO", Filter=null) > 2018-03-17 14:33:47,057 localhost-startStop-1 DEBUG Building Plugin[name=logger, class=org.apache.logging.log4j.core.config.LoggerConfig]. > 2018-03-17 14:33:47,072 localhost-startStop-1 DEBUG createLogger(additivity="false", level="INFO", name="DQOSql.tutorDAOImpl.java", includeLocation="null", ={STDOUT}, ={}, Configuration(C:\Users\Karen.Goh\workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp2\wtpwebapps\Hi5S\WEB-INF\log4j2.xml), Filter=null) > 2018-03-17 14:33:47,072 localhost-startStop-1 DEBUG Building Plugin[name=appender-ref, class=org.apache.logging.log4j.core.config.AppenderRef]. > 2018-03-17 14:33:47,072 localhost-startStop-1 DEBUG createAppenderRef(ref="STDOUT", level="INFO", Filter=null) > 2018-03-17 14:33:47,072 localhost-startStop-1 DEBUG Building Plugin[name=logger, class=org.apache.logging.log4j.core.config.LoggerConfig]. > 2018-03-17 14:33:47,088 localhost-startStop-1 DEBUG createLogger(additivity="false", level="INFO", name="controller.tutorController", includeLocation="null", ={STDOUT}, ={}, Configuration(C:\Users\Karen.Goh\workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp2\wtpwebapps\Hi5S\WEB-INF\log4j2.xml), Filter=null) > 2018-03-17 14:33:47,104 localhost-startStop-1 DEBUG Building Plugin[name=AppenderRef, class=org.apache.logging.log4j.core.config.AppenderRef]. > 2018-03-17 14:33:47,104 localhost-startStop-1 DEBUG createAppenderRef(ref="STDOUT", level="null", Filter=null) > 2018-03-17 14:33:47,104 localhost-startStop-1 DEBUG Building Plugin[name=logger, class=org.apache.logging.log4j.core.config.LoggerConfig]. > 2018-03-17 14:33:47,104 localhost-startStop-1 DEBUG createLogger(additivity="false", level="INFO", name="org.hibernate", includeLocation="null", ={STDOUT}, ={}, Configuration(C:\Users\Karen.Goh\workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp2\wtpwebapps\Hi5S\WEB-INF\log4j2.xml), Filter=null) > 2018-03-17 14:33:47,104 localhost-startStop-1 DEBUG Building Plugin[name=AppenderRef, class=org.apache.logging.log4j.core.config.AppenderRef]. > 2018-03-17 14:33:47,119 localhost-startStop-1 DEBUG createAppenderRef(ref="STDOUT", level="null", Filter=null) > 2018-03-17 14:33:47,119 localhost-startStop-1 DEBUG Building Plugin[name=logger, class=org.apache.logging.log4j.core.config.LoggerConfig]. > 2018-03-17 14:33:47,119 localhost-startStop-1 DEBUG createLogger(additivity="true", level="DEBUG", name="org.hibernate.SQL", includeLocation="null", ={STDOUT}, ={}, Configuration(C:\Users\Karen.Goh\workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp2\wtpwebapps\Hi5S\WEB-INF\log4j2.xml), Filter=null) > 2018-03-17 14:33:47,119 localhost-startStop-1 DEBUG Building Plugin[name=AppenderRef, class=org.apache.logging.log4j.core.config.AppenderRef]. > 2018-03-17 14:33:47,119 localhost-startStop-1 DEBUG createAppenderRef(ref="STDOUT", level="null", Filter=null) > 2018-03-17 14:33:47,119 localhost-startStop-1 DEBUG Building Plugin[name=logger, class=org.apache.logging.log4j.core.config.LoggerConfig]. > 2018-03-17 14:33:47,119 localhost-startStop-1 DEBUG createLogger(additivity="false", level="TRACE", name="org.hibernate.type.descriptor.sql", includeLocation="null", ={STDOUT}, ={}, Configuration(C:\Users\Karen.Goh\workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp2\wtpwebapps\Hi5S\WEB-INF\log4j2.xml), Filter=null) > 2018-03-17 14:33:47,119 localhost-startStop-1 DEBUG Building Plugin[name=AppenderRef, class=org.apache.logging.log4j.core.config.AppenderRef]. > 2018-03-17 14:33:47,135 localhost-startStop-1 DEBUG createAppenderRef(ref="STDOUT", level="null", Filter=null) > 2018-03-17 14:33:47,135 localhost-startStop-1 DEBUG Building Plugin[name=logger, class=org.apache.logging.log4j.core.config.LoggerConfig]. > 2018-03-17 14:33:47,135 localhost-startStop-1 DEBUG createLogger(additivity="false", level="DEBUG", name="util", includeLocation="null", ={STDOUT}, ={}, Configuration(C:\Users\Karen.Goh\workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp2\wtpwebapps\Hi5S\WEB-INF\log4j2.xml), Filter=null) > 2018-03-17 14:33:47,135 localhost-startStop-1 DEBUG Building Plugin[name=loggers, class=org.apache.logging.log4j.core.config.LoggersPlugin]. > 2018-03-17 14:33:47,150 localhost-startStop-1 DEBUG createLoggers(={Business.RegisterService, DQOSql.tutorDAOImpl.java, controller.tutorController, org.hibernate, org.hibernate.SQL, org.hibernate.type.descriptor.sql, util}) > 2018-03-17 14:33:47,166 localhost-startStop-1 DEBUG Building Plugin[name=AppenderRef, class=org.apache.logging.log4j.core.config.AppenderRef]. > 2018-03-17 14:33:47,166 localhost-startStop-1 DEBUG createAppenderRef(ref="STDOUT", level="null", Filter=null) > 2018-03-17 14:33:47,182 localhost-startStop-1 DEBUG Building Plugin[name=root, class=org.apache.logging.log4j.core.config.LoggerConfig$RootLogger]. > 2018-03-17 14:33:47,182 localhost-startStop-1 DEBUG createLogger(additivity="null", level="INFO", includeLocation="null", ={STDOUT}, ={}, Configuration(C:\Users\Karen.Goh\workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp2\wtpwebapps\Hi5S\WEB-INF\log4j2.xml), Filter=null) > 2018-03-17 14:33:47,197 localhost-startStop-1 DEBUG Building Plugin[name=loggers, class=org.apache.logging.log4j.core.config.LoggersPlugin]. > 2018-03-17 14:33:47,197 localhost-startStop-1 DEBUG createLoggers(={root}) > 2018-03-17 14:33:47,197 localhost-startStop-1 DEBUG Configuration XmlConfiguration[location=C:\Users\Karen.Goh\workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp2\wtpwebapps\Hi5S\WEB-INF\log4j2.xml] initialized > 2018-03-17 14:33:47,197 localhost-startStop-1 DEBUG Starting configuration XmlConfiguration[location=C:\Users\Karen.Goh\workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp2\wtpwebapps\Hi5S\WEB-INF\log4j2.xml] > 2018-03-17 14:33:47,197 localhost-startStop-1 DEBUG Started configuration XmlConfiguration[location=C:\Users\Karen.Goh\workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp2\wtpwebapps\Hi5S\WEB-INF\log4j2.xml] OK. > 2018-03-17 14:33:47,197 localhost-startStop-1 DEBUG Shutting down OutputStreamManager SYSTEM_OUT.false.false-1 > 2018-03-17 14:33:47,197 localhost-startStop-1 DEBUG Shut down OutputStreamManager SYSTEM_OUT.false.false-1, all resources released: true > 2018-03-17 14:33:47,213 localhost-startStop-1 DEBUG Appender DefaultConsole-1 stopped with status true > 2018-03-17 14:33:47,213 localhost-startStop-1 DEBUG Stopped org.apache.logging.log4j.core.config.DefaultConfiguration@3177456d OK > 2018-03-17 14:33:47,244 localhost-startStop-1 DEBUG Registering MBean org.apache.logging.log4j2:type=/Hi5S > 2018-03-17 14:33:47,260 localhost-startStop-1 DEBUG Registering MBean org.apache.logging.log4j2:type=/Hi5S,component=StatusLogger > 2018-03-17 14:33:47,275 localhost-startStop-1 DEBUG Registering MBean org.apache.logging.log4j2:type=/Hi5S,component=ContextSelector > 2018-03-17 14:33:47,291 localhost-startStop-1 DEBUG Registering MBean org.apache.logging.log4j2:type=/Hi5S,component=Loggers,name= > 2018-03-17 14:33:47,307 localhost-startStop-1 DEBUG Registering MBean org.apache.logging.log4j2:type=/Hi5S,component=Appenders,name=STDOUT > 2018-03-17 14:33:47,369 localhost-startStop-1 DEBUG LoggerContext[name=/Hi5S, org.apache.logging.log4j.core.LoggerContext@64c0cbaa] started OK with configuration XmlConfiguration[location=C:\Users\Karen.Goh\workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp2\wtpwebapps\Hi5S\WEB-INF\log4j2.xml]. > 2018-03-17 14:33:47,369 localhost-startStop-1 DEBUG Log4jServletContextListener ensuring that Log4j starts up properly. > 2018-03-17 14:33:47,369 localhost-startStop-1 DEBUG Log4jServletFilter initialized. > Mar 17, 2018 2:33:47 PM org.apache.coyote.AbstractProtocol start > INFO: Starting ProtocolHandler ["http-nio-8080"] > Mar 17, 2018 2:33:47 PM org.apache.coyote.AbstractProtocol start > INFO: Starting ProtocolHandler ["ajp-nio-8009"] > Mar 17, 2018 2:33:47 PM org.apache.catalina.startup.Catalina start > INFO: Server startup in 16089 ms > > > and at the internal browser, I then enter the URL to debug my app. The URL appeared and I entered the infor into the form. > > But, after I submitted my form, only a blank screen and it is not jumped to the breakpoint(s) that need debug and everything just grind to a halt :( Switch Eclipse to "Debug" perspective. (menu Window > Perspective > Open Perspective > Debug) Reset the perspective, if some panels (views) are hidden. (menu Window > Perspective > Reset Perspective) > I hope you can tell me what is missing such that I can't get debug to work ? > HTH Konstantin Kolinko --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
