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log4配置

log4j 和 log4j2

方式一:log4j2.xml

添加 jar 包

1     <!-- log4j-core -->2     <!-- 3     <dependency>4         <groupId>org.apache.logging.log4j</groupId>5         <artifactId>log4j-core</artifactId>6         <version>2.6.2</version>7     </dependency>

文件配置:

 1 <?xml version="1.0" encoding="UTF-8"?> 2 <Configuration> 3     <Appenders> 4         <Console name="STDOUT" target="SYSTEM_OUT"> 5             <PatternLayout pattern="%d %-5p [%t] %C{2} (%F:%L) - %m%n"/> 6         </Console> 7     </Appenders> 8     <Loggers> 9         <Logger name="com.opensymphony.xwork2" level="debug"/>10         <Logger name="org.apache.struts2" level="debug"/>11         <Root level="warn">12             <AppenderRef ref="STDOUT"/>13         </Root>14     </Loggers>15 </Configuration>

 

 

方式二:log4j.properties

添加 jar 包

1     <!-- log4j -->2     <dependency>3         <groupId>log4j</groupId>4         <artifactId>log4j</artifactId>5         <version>1.2.17</version>6     </dependency>

文件配置:

### direct log messages to stdout ###log4j.appender.stdout=org.apache.log4j.ConsoleAppenderlog4j.appender.stdout.Target=System.outlog4j.appender.stdout.layout=org.apache.log4j.PatternLayoutlog4j.appender.stdout.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n### direct messages to file mylog.log ###log4j.appender.file=org.apache.log4j.FileAppenderlog4j.appender.file.File=c:/mylog.loglog4j.appender.file.layout=org.apache.log4j.PatternLayoutlog4j.appender.file.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n### set log levels - for more verbose logging change ‘info‘ to ‘debug‘ ###log4j.rootLogger=info, stdout

 

log4配置