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I get an exception of 

SEVERE: Error Rendering View[/consult_carto.xhtml]
java.lang.IllegalArgumentException

Now I can't solve it yet, so I thought I might debug the JSF page and I went on to find that the <ui:debug /> helps with that, tried it just to find that it doesn't give much information.

My Question is : is it possible to know which line throws the exeption in a JSF page ? If so, how do we do that ?

Thanks.

Links : used this one : tag not working in Facelets (JSF 2.0) (and it works fine).

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  • Just look in Java renderer source code at the lines mentioned in the stack trace? If you can't decipher it, just ask a question with the full stack trace. – BalusC Jun 10 '13 at 13:11
  • That's what I do usually, but just wanted to know if there's a way to debug line by line a JSF page. Is there ? – Akheloes Jun 10 '13 at 13:50
  • Only if the bug is in XHTML code, not in Java code. JSF will then by default show line and char number of the problem in XHTML. In your particular case, the bug is apparently in Java code. Then you just have to read the source code indicated in the stack trace the usual way. – BalusC Jun 10 '13 at 13:50
  • Ok. Just to know it's possible good. Seems my issues is with java as you say, thanks. – Akheloes Jun 10 '13 at 13:57
  • As example, try removing a quote from a tag attribute like `value=#{bean.value}"`. You'll see a XHTML parsing error. – BalusC Jun 10 '13 at 13:57
  • Yes it does, but these are just syntaxe errors, what about exceptions specific to JSF rendering ? – Akheloes Jun 10 '13 at 14:02
  • That's already explained in my previous comments. Just look at source code the usual way based on stack trace. – BalusC Jun 10 '13 at 14:05
  • Ok got it, so always have to dive in java code. Thanks ! – Akheloes Jun 10 '13 at 14:08
  • I now see that you're the same person who asked http://stackoverflow.com/questions/17014942/commandbuttons-actionlistener-fire-a-java-lang-illegalargumentexception. I've already posted an answer over there related to this problem. – BalusC Jun 10 '13 at 14:12
  • Yes, sorry if I seperated the questions I thought this is a more general question that deserves it's own discussion. – Akheloes Jun 10 '13 at 14:15

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