Tips For Fixing The Tomcat Debug Configuration

Tips For Fixing The Tomcat Debug Configuration

If you’re getting a tomcat debug configuration error on your PC, you should explore these troubleshooting ideas.

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    By default, the Tomcat execution port is 8080. So for the debugger, I will set the port to 8081. To do this, you can also choose any port other than the Tomcat execution port, or other dedicated ports on your localhost for other servers running on the treadmill.

    Unsplash photo by Markus List

  • Use IDEA intellij Community Edition because you all love IDEA intellij tools.
  • Too lazy to install or override NetBeans, which already provides debugging functionality for web programs running in Tomcat.
  • Linux user.
  • If you meet all of the above requirements, this article is the right answer for you.

    Features for debugging Tomcat web applications near you are only available in IntelliJ Ultimate Edition. But the Ultimate Edition is probably not free. But don’t worry!!! If for some reason you cannot purchase a license, you can create a basic Tomcat combo even in IDEA Free Community Edition with the following basic configurations.

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  • After successfully installing Tomcat, you can start editing configurations in IntelliJ IDEA and Tomcat.

    We first need to set up a port so that our debugger can connect to the versionand your company’s Tomcat. It really should be a separate port eluding Tomcat. By default, Tomcat runs on port 8080. For this debugger, I will assign port 8081. For this, you can make any choice other than the tomcat runtime port or other dedicated ports on all your local hosts for other running servers. p>

    1. Stop Tomcat

    tomcat debug configuration

    sudo systemctl stop tomcat

    If you follow the installation instructions above, you can stop the server by running

    What is jpda Tomcat?

    Note that JPDA (Java Platform Debugger Architecture) is for debugging, while JMX is for monitoring. Both can run in parallel, and JMX can be enabled in the Java Control Panel – JMX. The JMX URL, username combined with password will be displayed there. For more information on debugging JPDA with Eclipse or NetBeans, see the Tomcat wiki.

    cd /opt/tomcat/bin/
    ./ stop

    2. Add the following line to the file in the JAVA_OPTS set in place statement. Do not remove any available set JAVA_OPTS statements. You can add it after any set JAVA_OPTS statement.

    JAVA_OPTS="$JAVA_OPTS -Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=8081"

    If you follow the installation instructions above, the file will be available in the /opt/tomcat/bin directory.

    sudo run systemctl tomcat

    If you follow the installation instructions above, you can start the server by running


    cd /opt/tomcat/bin/
    Configurations in IntelliJ IDEA

    Add a new remote computer help configuration by clicking the + at the top of the form. You need to change the high port value in Settings. It automatically updates many other debugging-related configurations, such as command selection arguments for the remote JVM, quit. Click Apply and OK.

    Your Tomcat is now ready to go. You can also add breakpoints to the original value and click the debug icon here in IntelliJ IDEA Community Edition to analyze and debug a web application running in Tomcat. Anything when financial freedom sees you

    Connected to Pinpoint VM, address: "localhost:8081", transport: "socket"

    I’m wasting my time trying to get the right information.

    More appropriate configurations for enabling remote debugging with Tomcat

    -Xdebug-agentlib:jdwp=transport=dt_socket, address=8000, server=y, suspend=n

    I do not recommend the above system for Windows environments. Addhow to double click above configuration to connect to tomcat server accessible from server view. Find the following screenshot.

    Now add the above runtime ecosystem configuration to Tomcat. See screenshot below.

    Now navigate to the Edit Arguments statement in the Launch Properties configuration shown in the following screenshot.



    In the Debug Configurations, find “Remote Java Application” and double-click it.

    In the design segment, use the browse button to select the design you want to debug further. hostname

    is nothing but the new host address. Here I work in the community, so it’s “localhost”.

    The value of the last port in the column must be eight thousand. In addition to the project name, terminology, and label fields, the other two columns, host combined with port, will be populated by overridingeach other unless you keep the same values ​​as mentioned. Check the screenshot information.

    Now right-click on the console of the Tomcatserver and select “Add” and “Remove” from the context menu. In this dialog box, you can add a project to the server.

    Last internal or possibly even external browser was opened and your process started. If the runtime control hit with breakpoints, Eclipse will also prompt for the debug perspective.

    I recently set up Intellij Ultimate to remotely debug a web application running in Tomcat. All in all, it’s a pretty straightforward process if you have a few key details in mind. Below is the latest walkthrough.


    Note. The IntelliJ configuration in this guide only applies to IntelliJ Ultimate. You can also debug a remote Tomcat instance by purchasing IntelliJ Community Edition. Instructions can be found here.

    Note. At the time of writing this great article, I was using the following versions:

  • Cat – 8.5.54
  • IntelliJ – 2020.1.2
  • Customize P project Example

    Build -> Build Artifacts -> SimpleWebApp:war -> Build
    tomcat debug configuration

    You should see the destination folder containing the WAR file SimpleWebApp.war being prepared.

    Project -> SimpleWebApp -> -> The purpose of SimpleWebApp.Tomcat was

    Run In Debug Mode

    How do I start Tomcat in debug mode?

    Open the startup script that appears in (your_tomcat_home). Location: %CATALINA_HOME%binstartup.bat.Add the following lines to the first unusedth line of the file (near line 8) Windows: allocate JPDA_ADDRESS=8000.Edit the launch line at the end to include “jpda”.

    Edit the service in the Tomcat bin folder, then enter the command ( for Mac/Linux or catalina.bat for Windows):

    Note. Using the “jpda” option starts Tomcat in debug mode with all options set to their default values.

    If Tomcat started successfully, you should see the following output. Alt=””>


    How do I start Tomcat in debug mode for debugging in IntelliJ?

    Setting up IntelliJ IDEA Open configuration editing settings and simply click on the Remote option: the Remote Settings dialog box will appear allowing the person to specify the required configuration; away from the host, port, project, etc. Specify the required options, click OK to prevent changes and start debug time.

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    Configuração De Depuração Do Tomcat
    Configuration De Débogage De Tomcat
    Konfiguracja Debugowania Tomcat
    톰캣 디버그 구성
    Configuración De Depuración De Tomcat
    Configurazione Di Debug Tomcat
    Конфигурация отладки Tomcat
    Tomcat Debug Configuration