Thanks. We need to add that example to a wiki page or add it to some examples
on the web site.
Ralph
On May 28, 2013, at 8:08 AM, Lucie Boubée wrote:
> Thanks, I implements MessageFactory and it's works
>
>
> 2013/5/27 Ralph Goers <ralph.go...@dslextreme.com>
>
>> You could use a custom MessageFactory.
>>
>> public class MyMessageFactory extends ParameterizedMessageFactory {
>>
>> private final String objId;
>>
>> public MyMessageFactory(Object obj) {
>> this.objId = obj.toString();
>> }
>>
>> @Override
>> public Message newMessage(final String message, final Object...
>> params) {
>> return new ParameterizedMessage("{}: " + message, objId,
>> params);
>> }
>>
>> }
>>
>>
>>
>>
>> then just do
>>
>> public class MyClass {
>>
>> private String id = "512";
>>
>> private Logger logger =
>> LogManager.getLogger("com.mycorp.mycomponent.MyClass", new
>> MyMessageFactory(this));
>>
>> public doWork() {
>> logger.error("this is an error");
>> }
>>
>> public String toString() {
>> return this.id;
>> }
>> }
>>
>> When the error is logged you should see "512: this is an error" as the
>> message.
>>
>>
>> Ralph
>>
>> On May 27, 2013, at 8:15 AM, Lucie Boubée wrote:
>>
>>> 2013/5/27 Remko Popma <rem...@yahoo.com>
>>>
>>>>
>>>> On 2013/05/27, at 23:50, Lucie Boubée <lbou...@gmail.com> wrote:
>>>>
>>>>> Hi,
>>>>>
>>>>> I use log4j2 beta 6 and I would like to add a prefix to all my
>> messages.
>>>>> This prefix is passed to the constructor parameter and it depends on
>> the
>>>>> instance of the class. So we're at the object level (not class or
>>>> thread).
>>>>>
>>>>> For example, I have an A class instantiated like new A(152), so when I
>>>> use
>>>>> log.error("message") on this class, 152: is written just before the
>>>>> message. For new A(155),155: will be displayed instead.
>>>>
>>>> Do you mean that the call to log.error("message") is inside class A?
>>>> In that case, how about simply using
>>>> log.error("{} message", myPrefix);
>>>> Would that work?
>>>>
>>>
>>> Yes, log.error("message") is calling inside class A.
>>> log.error('{} message", myPrefix) work, but I would like to avoid to add
>>> the prefix every time I read a log error, like with ThreadContext.
>>>
>>>>
>>>>>
>>>>> I try to use ThreadContext.put on the constructor but, I don't know
>> when
>>>>> logger wiil be call consequently the prefix is set to the last
>>>>> ThreadContext called but that does not necessarily correspond to the
>>>>> correct class instance
>>>>> I ask to stackoverflow (
>>>>>
>>>>
>> http://stackoverflow.com/questions/16723016/how-do-i-add-a-prefix-to-log4j-messages-at-the-object-level
>>>> )
>>>>> but
>>>>> it has not solved my problem.
>>>>>
>>>>> --
>>>>> Lucie
>>>>
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>>>>
>>>>
>>>
>>>
>>> --
>>> Lucie BOUBÉE
>>
>>
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>>
>>
>
>
> --
> Lucie BOUBÉE
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