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How can I hide long class paths in stack traces to make them readable?

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By User



Often stack traces can get so verbose from long class paths that they are very painful to read. Here's an example:







1) No implementation for java.util.Set<

com.mydomain.myapp.android.activities.catbrowser.generalizedbrowser.listview.

helpers.databaseitem.itemmanipulators.ItemManipulator<

 com.mydomain.myapp.flash.Cat>> annotated with

 @com.google.inject.assistedinject.Assisted(value=) was bound.

      while locating

 java.util.Set<

  com.mydomain.myapp.android.activities.catbrowser.generalizedbrowser.listview.

  helpers.databaseitem.itemmanipulators.ItemManipulator<

   com.mydomain.myapp.flash.Cat>> annotated with 

   @com.google.inject.assistedinject.Assisted(value=)







...





If I could trim the class path, only showing class names and methods, it would look like this:







1) No implementation for 

   Set<ItemManipulator<Cat>> annotated with @Assisted(value=) was bound.

   while locating Set<ItemManipulator<Cat>> annotated with @Assisted(value=)







...





I first asked this as a Guice-specific question , but realized it applies to stack traces in general. Is there any way to configure Java or Eclipse to do this natively? If not, is there a plugin or even external tool to accomplish this?


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Comments

  1. Tips For AllFebruary 15, 2012 at 2:06 AM

    You can set the default UncaughtExceptionHandler and modify the stack trace before printing to System.err. You may have to play around with the regex, but this will work:

    Thread.setDefaultUncaughtExceptionHandler(new UncaughtExceptionHandler() {
    @Override
    public void uncaughtException(Thread t, Throwable e) {
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    PrintStream ps = new PrintStream(baos);
    e.printStackTrace(ps);
    String withoutClasspaths = baos.toString().replaceAll("(\\w+\\.){2,}(\\w*)", "$2");
    System.err.println(withoutClasspaths);
    }
    });

    ReplyDelete
  2. Tips For AllFebruary 15, 2012 at 2:06 AM

    To produce more readable traces, paste the stack trace into Notepad++ and the following regular expression. The same expression could also be used in a scripting language.

    I paste the trace into Notepad++ and use the following search and replace settings.

    Search pattern: \w[a-z\d_\.]+\.([A-Z][A-Za-z\d_]*)

    Replace with: \1

    Search Settings: match case enabled, Regular expression search mode.

    ReplyDelete
  3. Tips For AllFebruary 15, 2012 at 2:06 AM

    If you use logback, then you can use layout to output logs in any way you like
    http://logback.qos.ch/manual/layouts.html.

    Outputting a class like java.lang.String as j.l.String is quite common in stack traces

    ReplyDelete

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