Log4j - 强制日志消息参数

Question

I am trying to force the detail within log4j messages as opposed to just a string. Ultimately I would like to have something like:

logger.info("component", "error code", " error message");

I may even use an enum for the component.

I would then expect the message to appear in the log as "time - component - code - message"

Any ideas?

Answer 1

A very trivial solution (for this special case):

logger.info(
      String.format("%s - %s - %s", "component", "error code", "error message"));

or in an improved version:

logger.info(createMessage("component", "error code", "error message"));

with

public static String createMessage(
                 String component, String errorCode, String errorMessage) {
   return String.format("%s - %s - %s", 
                 "component", "error code", "error message");
}

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For a more general solution, consider wrapping the original Logger class into a custom logger class and implement an info method that takes the three arguments and delegates to internalLogger.info(String message) with the new message based on the input.