mavn配置log4j

POM.xml增加如下配置

<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.21</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.7.25</version>
</dependency>

 

src/mian/resources下新建log4j.properties文件

添加如下配置

#定义级别
log4j.rootLogger=INFO, R,CONSOLE
#设置日志输出类型
log4j.appender.R=org.apache.log4j.FileAppender
#设置日志文件名
log4j.appender.R.file=my.log
#追加的方式记录
log4j.appender.R.Append=true
#日志输出格式
log4j.appender.R.layout=org.apache.log4j.PatternLayout
log4j.appender.R.layout.ConversionPattern=%n%n%d%p[%c]-%m%n

log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
log4j.appender.CONSOLE.Target=System.out
log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
log4j.appender.CONSOLE.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p [%t] %c %x - %m%n

 

java代码

private static final Logger log=LoggerFactory.getLogger(App.class);

PropertyConfigurator.configure(ClassLoader.getSystemResource("log4j.properties"));

log.info("日志文件测试！");
System.out.println("log文件写入完毕了!");