java log4j 属性：LevelMatchFilter 不起作用
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log4j properties: LevelMatchFilter doesn't work
提问by Michael
I was trying to route my Logging to two different files: one for INFO messages and another one for ERRORs. LevelMatchFilter seemed the right way to go. Unfortunately, all messages are logged to my info.log, not just the INFO messages. Any ideas what I did wrong?
我试图将我的 Logging 路由到两个不同的文件：一个用于 INFO 消息，另一个用于 ERRORs。LevelMatchFilter 似乎是正确的方法。不幸的是，所有消息都记录到我的 info.log 中，而不仅仅是 INFO 消息。任何想法我做错了什么？
Here's my config:
这是我的配置：
# Define the root logger with appender file
log4j.logger.com.my.class.ClassName=DEBUG, FILE, ERR, CA
# Define the info file appender
log4j.appender.FILE=org.apache.log4j.FileAppender
log4j.appender.FILE.File=info.log
log4j.appender.FILE.filter.a=org.apache.log4j.varia.LevelMatchFilter
log4j.appender.FILE.filter.a.LevelToMatch=INFO
log4j.appender.FILE.filter.a.AcceptOnMatch=true
# Define the layout for info file appender
log4j.appender.FILE.layout=org.apache.log4j.PatternLayout
log4j.appender.FILE.layout.conversionPattern=%d %-5p %c - %m%n
# Define the error file appender
log4j.appender.ERR=org.apache.log4j.FileAppender
log4j.appender.ERR.File=error.log
log4j.appender.ERR.Threshold=ERROR
# Define the layout for error file appender
log4j.appender.ERR.layout=org.apache.log4j.PatternLayout
log4j.appender.ERR.layout.conversionPattern=%d %-5p %c - %m%n
log4j.appender.CA=org.apache.log4j.ConsoleAppender
log4j.appender.CA.layout=org.apache.log4j.PatternLayout
log4j.appender.CA.layout.ConversionPattern=%d %-5p %c - %m%n
回答by royalpath
I think your file appender config should look something like this:
我认为你的文件追加器配置应该是这样的：
# Define the info file appender
log4j.appender.FILE=org.apache.log4j.FileAppender
log4j.appender.FILE.File=info.log
log4j.appender.FILE.Threshold=INFO
log4j.appender.FILE.filter.a=org.apache.log4j.varia.LevelMatchFilter
log4j.appender.FILE.filter.a.LevelToMatch=INFO
log4j.appender.FILE.filter.a.AcceptOnMatch=true
log4j.appender.FILE.filter.b=org.apache.log4j.varia.LevelMatchFilter
log4j.appender.FILE.filter.b.LevelToMatch=ERROR
log4j.appender.FILE.filter.b.AcceptOnMatch=false
log4j.appender.FILE.filter.c=org.apache.log4j.varia.LevelMatchFilter
log4j.appender.FILE.filter.c.LevelToMatch=FATAL
log4j.appender.FILE.filter.c.AcceptOnMatch=false
回答by Gabo.Egui.EC
I finally get a solution (using filters) to a similar problem without making an external XML file, here is the resulting code:
我终于在不制作外部 XML 文件的情况下获得了类似问题的解决方案（使用过滤器），这是生成的代码：
log4j.rootLogger=info, R, ERROR
#### only INFO
log4j.appender.R=org.apache.log4j.RollingFileAppender
log4j.appender.R.File=FacturaElectronica.log
log4j.appender.R.MaxFileSize=500KB
log4j.appender.R.MaxBackupIndex=1
log4j.appender.R.layout=org.apache.log4j.PatternLayout
log4j.appender.R.layout.ConversionPattern=%d [%t] %-5p %c - %m%n
log4j.appender.R.filter.a=org.apache.log4j.varia.LevelRangeFilter
log4j.appender.R.filter.a.LevelMin=INFO
log4j.appender.R.filter.a.LevelMax=INFO
#### only ERROR
log4j.appender.ERROR=org.apache.log4j.RollingFileAppender
log4j.appender.ERROR.File=FacturaElectronicaError.txt
log4j.appender.ERROR.MaxFileSize=500KB
log4j.appender.ERROR.MaxBackupIndex=1
log4j.appender.ERROR.layout=org.apache.log4j.PatternLayout
log4j.appender.ERROR.layout.ConversionPattern=%d [%t] %-5p %c - %m%n
log4j.appender.ERROR.filter.b=org.apache.log4j.varia.LevelMatchFilter
log4j.appender.ERROR.filter.b.LevelToMatch=ERROR
log4j.appender.ERROR.filter.b.AcceptOnMatch=true
log4j.appender.ERROR.Threshold=ERROR
回答by Tomer
LevelMatchFilter has nothing to do with what you need.
LevelMatchFilter 与您需要的无关。
You need to define 2 loggers, one will have the ERR appender and the other the FILE appender:
您需要定义 2 个记录器，一个将具有 ERR 附加程序，另一个将具有 FILE 附加程序：
log4j.logger.my.info.logger=INFO, FILE
log4j.logger.my.err.logger=ERROR, ERR
And in the code you need to provide the logger name when you initialize the logger:
在代码中，您需要在初始化记录器时提供记录器名称：
static Logger logger = Logger.getLogger("my.info.logger");
