Simple way to log parameter values in throws exception from methods in Java

Question

At the moment my exceptions are logging text and stack-trace:

throw new RequestValidationException("test exception", parameters, e);

I want to Collect all parameters for the throws exception in all methods.

HashMap<String, String> parameters = new HashMap<String, String>();   
        parameters.put("testparam", message.toString());

throw new RequestValidationException("test exception", parameters, e);

Now i'm using a hashmap. I have to look at every method and check if it's using a parameter. This will cost me days. There are like thousands of exceptions in the code, is there a simple way to show the values?

Do you mean something automatic, or are you asking for a way to create a message that contains parameter values? — folkol
– folkol, Commented Jun 18, 2015 at 13:47
It's a little unclear to me what you're trying to accomplish. Could you provide some pseudo-code that illustrates the behavior you're looking for? — Dan Forbes
– Dan Forbes, Commented Jun 18, 2015 at 13:49

Captain Man · Accepted Answer · 2015-06-18 14:09:46Z

2

You can use slf4j-ext for logging method parameters. They are logged at the trace level.

private static final XLogger xlogger = XLoggerFactory.getXLogger(MyClass.class);

Then you can use at start and end of your methods like this:

protected void Method1(Message aMessage){
    xLogger.entry(aMessage);
    ...
    xLogger.exit();
}

edited Jun 18, 2015 at 14:09

Captain Man

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answered Jun 18, 2015 at 13:50

bhdrkn

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