Log4j2 日志格式 - 空方括号

Question

I recently upgraded log4j-1x to log4j-2.17.2. This was my formatting pattern:

%d{ISO8601} [%t] %-5p %x - %m%n

But the output is like this:

2022-07-08T00:59:59,392 [localhost-startStop-1] INFO [] - Quartz scheduler version: 1.8.5

I am not sure where the empty square brackets [] are coming from, after the log priority. INFO in above case. How to remove it, without disturbing the format.

Answer 1

我认为因为您没有在该 INFO 级别记录任何信息，所以如果 epty 方括号仍然为空，请尝试记录一些内容