使用 Log4J 的同一类中的不同 Logger
我希望单独记录同一类中生成的特定消息。那么，如何在同一个类中创建两种不同类型的记录器。目前，属性文件看起来像
log4j.rootCategory=DEBUG, O
# Stdout
log4j.appender.O=org.apache.log4j.ConsoleAppender
log4j.appender.O.layout=org.apache.log4j.PatternLayout
log4j.appender.O.layout.ConversionPattern=[%d{ISO8601}]%5p%6.6r[%t]%x - %C.%M(%F:%L) - %m%n
# File
log4j.appender.MESSAGE=org.apache.log4j.RollingFileAppender
log4j.appender.MESSAGE.File=target/logs/messages.log
# Control the maximum log file size
log4j.appender.MESSAGE.MaxFileSize=1000KB
# Archive log files (one backup file here)
log4j.appender.MESSAGE.MaxBackupIndex=100
log4j.appender.MESSAGE.layout=org.apache.log4j.PatternLayout
log4j.appender.MESSAGE.layout.ConversionPattern=[%d{ISO8601}]%5p%6.6r[%t]%x - %C.%M (% F:% L) - %m%n
log4j.appender.MESSAGE.
log4j.category.failedMessagesLog=INFO, MESSAGE
我在代码中使用的日志记录： – /** 记录器。 */
Logger logger = Logger.getLogger(MyClass.class);
Logger msgLogger = Logger.getLogger("MESSAGE");
经过测试，我创建了一个空日志文件（messages.log）。 有什么建议吗？
I want specific messages generated from within the same class to be logged separately. So, how can I create 2 different types of loggers within the same class. Currently, the Properties file looks like
log4j.rootCategory=DEBUG, O
# Stdout
log4j.appender.O=org.apache.log4j.ConsoleAppender
log4j.appender.O.layout=org.apache.log4j.PatternLayout
log4j.appender.O.layout.ConversionPattern=[%d{ISO8601}]%5p%6.6r[%t]%x - %C.%M(%F:%L) - %m%n
# File
log4j.appender.MESSAGE=org.apache.log4j.RollingFileAppender
log4j.appender.MESSAGE.File=target/logs/messages.log
# Control the maximum log file size
log4j.appender.MESSAGE.MaxFileSize=1000KB
# Archive log files (one backup file here)
log4j.appender.MESSAGE.MaxBackupIndex=100
log4j.appender.MESSAGE.layout=org.apache.log4j.PatternLayout
log4j.appender.MESSAGE.layout.ConversionPattern=[%d{ISO8601}]%5p%6.6r[%t]%x - %C.%M (% F:% L) - %m%n
log4j.appender.MESSAGE.
log4j.category.failedMessagesLog=INFO, MESSAGE
I'm using the logging in my code as: –
/** Logger. */
Logger logger = Logger.getLogger(MyClass.class);
Logger msgLogger = Logger.getLogger("MESSAGE");
Upon testing, I get an empty log file (messages.log) created.
Any suggestions??
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评论（2）
创建两个具有不同名称的记录器。您可以按名称配置它们。
执行此操作的一个简单方法是为类名添加后缀。例如
在您的属性文件中。
Create two loggers with different names. You can configure them on a per name basis.
A simple way to do this is to add a suffix to you class name. e.g.
in your properties file.
“failedMessagesLog”是应用了appender
(INFO,MESSAGE, MESSAGE1)的java文件。我刚刚重用了现有的
RollingFileAppender。您可以使用任何其他附加程序（如 fileAppender）。您应该使用正确的类名
Logger logger = Logger.getLogger(MyClass.class)应更改为
private static Final Logger log = Logger.getLogger( **failedMessagesLog.class** );确保您使用的是 log4j 的日志记录 ie
"failedMessagesLog" is the java file to which appender
(INFO,MESSAGE, MESSAGE1)is applied.I have just reused existing
RollingFileAppender. you can use any other appender ( like fileAppender).You should use the right Class name
Logger logger = Logger.getLogger(MyClass.class)should be changed to
private static final Logger log = Logger.getLogger( **failedMessagesLog.class** );Make sure you are using log4j's logging ie