Attach debugger to application using Eclipse

by

Yes.

If you start your server with the debug port open, by adding this into your java command:

-Xdebug -Xrunjdwp:transport=dt_socket,address=127.0.0.1:8888,server=y,suspend=n

And you have the source code in your project (technically this isn’t required, but it’s kind of useless unless you do), you can connect to the running server by setting up a “debug configuration”
with host = the machine the server is running on and port = 8888 (for example – see options above)

You can then set break points and the debug session will halt the server there and you can inspect variables/fields, and even set their values.

Update

The more modern command-line options for the JVM to do this are

 -agentlib:jdwp=transport=dt_socket,address=127.0.0.1:8888,server=y,suspend=n

More Related Contents:

  1. Eclipse java debugging: source not found
  2. Break when exception is thrown
  3. JBoss debugging in Eclipse
  4. How to use conditional breakpoint in Eclipse?
  5. Eclipse – debugger doesn’t stop at breakpoint
  6. Locally declared variables can not be inspected
  7. Viewing complete strings while debugging in Eclipse
  8. How do I deal with a ClassNotLoadedException while debugging?
  9. Eclipse logcat debugging
  10. Eclipse debugging “source not found”
  11. Java object ID in jvm
  12. How to find out if “debug mode” is enabled
  13. Determine if a java application is in debug mode in Eclipse
  14. Can I find out the return value before returning while debugging in Eclipse?
  15. Running a program in Debug mode is incredible slow
  16. How to detect when a variable changes value
  17. Where do you configure Eclipse Java compiler (javac) flags?
  18. How to Use Eclipse to Debug JNI code (Java & C/C++)
  19. Breakpoint at exception in Eclipse – how to examine Exception object?
  20. Best way to debug Java web application packaged as a WAR using Eclipse and Maven?
  21. Why does the Eclipse debugger give the error “Source not found” seemingly without reason?
  22. What different breakpoint icons mean in Eclipse?
  23. Java: export to an .jar file in eclipse
  24. Convert Existing Eclipse Project to Maven Project
  25. Java properties UTF-8 encoding in Eclipse
  26. Eclipse Optimize Imports to Include Static Imports
  27. Using Eclipse Java Compiler (ecj) in maven builds
  28. Eclipse: How to install a plugin manually?
  29. Read file from /src/main/resources/
  30. Which @NonNull Java annotation to use [duplicate]

Leave a Comment