How can I change log4j behaviour when it formats parameters in a log line? -


log4j allows specify log string , objects separately. example:

import org.slf4j.logger; import org.slf4j.loggerfactory;  public class mylogger {      private static final logger logger = loggerfactory.getlogger(mylogger.class);      public static void main(string [] args) {         logger.info("this number {} , string {}", 5, "blah!");     } }

results in output

this number 5 , string blah!

i'd know if can tell log4j print parameters surrounded quotes every time prints log line . same piece of code above:

logger.info("this number {} , string {}", 5, "blah!");

would output: 

this number "5" , string "blah!"

what want changing log4j behaviour, not call logger method (logger.info(...)). problem i'm calling logger in thousands of places , changing calls isn't practical.

you need add quotes escape character i.e. \ either in original string before , after parameter brackets or in arguments if string. below examples;

  1. logger.info("args 1 \"{}\" , 2 \"{}\"", "blah!!", 4); output args 1 "blah!!" , 2 "4".
  2. logger.info("args 1 {} , 2 {}", "\"blah!!\"", 4); output args 1 "blah!!" , 2 4

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