Maven项目中使用日志slf4j的步骤
Maven项目中使用日志slf4j的步骤
1、在POM.XML中加入依赖(红色部分)
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
<exclusions>
<exclusion>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
</exclusion>
<exclusion>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
</exclusion>
</exclusions>
</dependency>
2、在资源文件夹(resources)新建属性文件(log4j.properties),内容如下:
log4j.rootLogger=INFO, stdout, R log4j.appender.stdout=org.apache.log4j.ConsoleAppender log4j.appender.stdout.layout=org.apache.log4j.PatternLayout # Pattern to output the caller's file name and line number. log4j.appender.stdout.layout.ConversionPattern=%5p [%t] (%F:%L) - %m%n log4j.appender.R=org.apache.log4j.RollingFileAppender log4j.appender.R.File=example.log log4j.appender.R.MaxFileSize=100KB # Keep one backup file log4j.appender.R.MaxBackupIndex=1 log4j.appender.R.layout=org.apache.log4j.PatternLayout log4j.appender.R.layout.ConversionPattern=%p %t %c - %m%n
3、在使用到的类中导入、定义和使用
import org.slf4j.Logger; import org.slf4j.LoggerFactory;
private static final Logger logger = LoggerFactory.getLogger(MyClass.class);//红色替换为使用的类名
logger.info(" LOG test.");//在需要的地方使用。