Log4jxml ex
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The document provides examples of log4j.xml configuration files to output logging to the console, to a file, and to both the console and a file. The first example configures a console appender to output logs to the console. The second example configures a file appender to output logs to a file called myStruts1App.log. The third and full example configures both a console and file appender to output logs to both the console and the myStruts1App.log file.
Log4jxml ex
- 2. 1. Output to Console Redirect the logging to console. log4j.xml <?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE log4j:configuration SYSTEM "log4j.dtd"> <log4j:configuration debug="true" xmlns:log4j='http://jakarta.apache.org/log4j/'> <appender name="console" class="org.apache.log4j.ConsoleAppender"> <layout class="org.apache.log4j.PatternLayout"> <param name="ConversionPattern" value="%d{yyyy-MM-dd HH:mm:ss} %- 5p %c{1}:%L - %m%n" /> </layout> </appender> <root> <level value="DEBUG" /> <appender-ref ref="console" /> </root> </log4j:configuration>
- 3. 2. Output to File Redirect the logging to a file.. log4j.xml <?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE log4j:configuration SYSTEM "log4j.dtd"> <log4j:configuration debug="true" xmlns:log4j='http://jakarta.apache.org/log4j/'> <appender name="file" class="org.apache.log4j.RollingFileAppender"> <param name="append" value="false" /> <param name="maxFileSize" value="10KB" /> <param name="maxBackupIndex" value="5" /> <!-- For Tomcat --> <param name="file" value="${catalina.home}/logs/myStruts1App.log" /> <layout class="org.apache.log4j.PatternLayout"> <param name="ConversionPattern" value="%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n" /> </layout> </appender>
- 4. 3. Output to Console and File Full example to output the logging to both console and file. log4j.xml <?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE log4j:configuration SYSTEM "log4j.dtd"> <log4j:configuration debug="true" xmlns:log4j='http://jakarta.apache.org/log4j/'> <appender name="console" class="org.apache.log4j.ConsoleAppender"> <layout class="org.apache.log4j.PatternLayout"> <param name="ConversionPattern" value="%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n" /> </layout> </appender> <appender name="file" class="org.apache.log4j.RollingFileAppender"> <param name="append" value="false" /> <param name="maxFileSize" value="10MB" /> <param name="maxBackupIndex" value="10" /> <param name="file" value="${catalina.home}/logs/myStruts1App.log" /> <layout class="org.apache.log4j.PatternLayout"> <param name="ConversionPattern" value="%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n" /> </layout>
- 5. <root> <level value="ERROR" /> <appender-ref ref="file" /> </root> </log4j:configuration> </appender> <root> <level value="DEBUG" /> <appender-ref ref="console" /> <appender-ref ref="file" /> </root> </log4j:configuration>