[英]Logging different Level messages in different Logs using Log4j
我想使用apache Log4j.jar在我的web應用程序中維護兩個日志文件:
1)一個日志將包含每個級別的所有日志消息2)第二個日志文件將包含特定類的日志消息
這是我正在使用的配置XML :(不太了解XML中使用的標記,只是嘗試了)
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/">
<appender name="FILE1" class="org.apache.log4j.DailyRollingFileAppender">
<param name="File" value="D:/CSVExportLogs/CSVExportLogFile-ERROR.log"/>
<param name="DatePattern" value="'.'yyyy-MM-dd"/>
<param name="Append" value="true"/>
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%d [%t] %-5p %c (%F:%L) - %m%n"/>
</layout>
</appender>
<appender name="FILE" class="org.apache.log4j.DailyRollingFileAppender">
<param name="File" value="D:/CSVExportLogs/CSVExportLogFile-INFO.log"/>
<param name="DatePattern" value="'.'yyyy-MM-dd"/>
<param name="Append" value="true"/>
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%d [%t] %-5p %c (%F:%L) - %m%n"/>
</layout>
</appender>
<category name="com.taxware.mgmt.CustomerManager" additivity="false">
<priority value="warn"/>
<appender-ref ref="FILE"/>
</category>
<root>
<priority value="info"/>
<appender-ref ref="FILE1"/>
</root>
</log4j:configuration>
通過上面的xml,我只獲取FILE1中的信息消息,我想要所有級別的消息以及警告級別的消息,這些消息將在此文件的單獨文件中。 有沒有可用的解決方案。
# Create ROOT logger(main logger) with level INFO, and add to it 2 appenders:
# FILE_INFO, FILE_WARN. This means that all loggers by default will writes messages
# in this 2 file appenders, with level INFO or higher
log4j.rootLogger=INFO, FILE_INFO, FILE_WARN
######## LEVELS:
# Set logging level to WARN for all classes and subclasses in package
# com.taxware.mgmt.CustomerManager
log4j.category.com.taxware.mgmt.CustomerManager=WARN
######## APPENDERS:
# FILE_INFO
# Type of appender
log4j.appender.FILE_INFO=org.apache.log4j.RollingFileAppender
# File where to save all messages
log4j.appender.FILE_INFO.File=D:/CSVExportLogs/CSVExportLogFile-INFO.log
# Max file size, after that will be created new log file, and old file will be renamed
log4j.appender.FILE_INFO.MaxFileSize=100KB
# Maximum amount of old log files.
log4j.appender.FILE_INFO.MaxBackupIndex=100
# Patter of messages.
log4j.appender.FILE_INFO.layout=org.apache.log4j.PatternLayout
log4j.appender.FILE_INFO.layout.ConversionPattern=%d{ISO8601} [%-5p][%-24.24t][%32.32c] - %m%n
# Custom level for appender. In this file will be add only messages with level INFO or highter
log4j.appender.FILE_INFO.Threshold=INFO
# FILE_WARN file appender
log4j.appender.FILE_WARN=org.apache.log4j.RollingFileAppender
log4j.appender.FILE_WARN.File=D:/CSVExportLogs/CSVExportLogFile-WARN.log
log4j.appender.FILE_WARN.MaxFileSize=50KB
log4j.appender.FILE_WARN.MaxBackupIndex=10
log4j.appender.FILE_WARN.layout=org.apache.log4j.PatternLayout
log4j.appender.FILE_WARN.layout.ConversionPattern=%d{ISO8601} [%-5p][%-24.24t][%32.32c] - %m%n
# Custom level for appender. In this file will be add only messages with level WARN or highter
log4j.appender.FILE_WARN.Threshold=WARN
要記錄特定類的消息,您可以執行以下操作:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/">
<appender name="myClassAppender" class="org.apache.log4j.FileAppender">
<param name="File" value="../logs/myClassLogs.log"/>
<param name="Append" value="true"/>
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%m%n"/>
</layout>
</appender>
.............
<logger name="com.my.package.MySpecificClass">
<!--
all log messages of level "debug" or higher will be logged, unless defined otherwise
all log messages for "MySpecificClass" will be logged to the appender "myClassAppender"
-->
<level value="DEBUG"/>
<appender-ref ref="myClassAppender"/>
</logger>
.............
</log4j:configuration>
我在log4j級別中說這個行為:
All < Debug < Info < Warn < Error < Fatal < Off
通過您的配置,發生以下事情:
我還建議您使用SLF4J來解耦API和實現。
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