1. Level filter
LevelFilter: Level filter, to filter the logs of a certain level.
The three sub-labels are
- level: log level.
- onMatch: operation on logs that meet the filtering level. Optional values (DENY, NEUTRAL, ACCEPT)
- onMismatch: onMismatch: operation on logs that do not meet the filtering level. Optional values (DENY, NEUTRAL, ACCEPT)
Write the following record logs in the code respectively.
log.trace(0)
log.debug(1)
log.info(2)
log.warn(3)
log.error(4)
According to the above configuration, we filter the info level.
1. OnMatch is configured with Accept, which means to accept the action of the log that meets the info level, and then print.
2. OnMismatch does (DENY) reject actions for logs that do not conform to the info level, it will not accept log records of other levels except info.
In summary: get the print result as
2019-06-30 17:3:19.231 [http-nio-8888-exec-1] INFO 1
2. Threshold filter
ThresholdFilter: Threshold value filter to filter out logs below the specified threshold value.
As configured above, using the threshold value filter, when we configure DEBUG, it will filter out the log records below the level of DEBUG, which is based on
TRACE < DEBUG < INFO < WARN < ERROR
In addition to the trace level log is not printed, other logs will be recorded
