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From illum...@speakeasy.net
Subject Re: Catching Log4j Exceptions
Date Tue, 04 Oct 2005 20:59:20 GMT

I'm seeing this error in my junit testing.  I'm doing  
log.info(message).  Before this call I've attached a UDPAppender (with  
a "badhost") and removed all other appenders.

/EA

3050 [main] ERROR org.apache.log4j.net.UDPAppender - Could not find  
address of [badhost].
java.net.UnknownHostException: badhost: badhost
	at java.net.InetAddress.getAllByName0(InetAddress.java:1011)
	at java.net.InetAddress.getAllByName0(InetAddress.java:981)
	at java.net.InetAddress.getAllByName(InetAddress.java:975)
	at java.net.InetAddress.getByName(InetAddress.java:889)
	at  
org.apache.log4j.net.UDPAppender.getAddressByName(UDPAppender.java:227)
	at  
org.apache.log4j.net.UDPAppender.activateOptions(UDPAppender.java:122)
	at  
com.singingfish.knowledgebase.KBLogger.attachUDPAppender(KBLogger.java: 
165)
	at com.singingfish.knowledgebase.KBLogger.<init>(KBLogger.java:96)
	at  
com.singingfish.knowledgebase.KBLogger$KBLoggerFunctionalTest.testMessag 
eNoServer(KBLogger.java:430)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at  
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.jav 
a:39)
	at  
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessor 
Impl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:324)
	at junit.framework.TestCase.runTest(TestCase.java:154)
	at junit.framework.TestCase.runBare(TestCase.java:127)
	at junit.framework.TestResult$1.protect(TestResult.java:106)
	at junit.framework.TestResult.runProtected(TestResult.java:124)
	at junit.framework.TestResult.run(TestResult.java:109)
	at junit.framework.TestCase.run(TestCase.java:118)
	at junit.framework.TestSuite.runTest(TestSuite.java:208)
	at junit.framework.TestSuite.run(TestSuite.java:203)
	at  
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTe 
stRunner.java:436)
	at  
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRun 
ner.java:311)
	at  
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRu 
nner.java:192)


On Oct 4, 2005, at 1:50 PM, Jacob Kjome wrote:

> Quoting illumine@speakeasy.net:
>
>> I have a question which has likely been answered (sorry, couldn't find
>> it):  I'm using a UDPAppender so I want to be able to catch exceptions
>> like UnknownHostException or BindException, but if I do...
>>
>> log.info("sending UDP message");
>>
>> and it fails, the Exception is sent to the console, but I'm not able  
>> to
>> catch it in my code.  What is the intended way that I should handle
>> these types of exceptions?
>>
>
> Log4j should never ever throw exceptions from its public api.  What is  
> the
> exception?  Please provide the stacktrace.
>
> Jake
>
>> Thanks for any help!
>> /ErikAnthony
>>
>> p.s.
>> If there is a wiki or FAQ that I should normally consult (other than
>> the archive of this user list) that would be really helpful too.
>> Thanks again!
>> /EA
>>
>>
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>
>
>
>
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