一、添加maven依赖

             
                  
       
        org.apache.logging.log4j
                   
       
        log4j-api
                   
       
        ${log4j.version}
               
              
                  
       
        org.apache.logging.log4j
                   
       
        log4j-core
                   
       
        ${log4j.version}
               
          
     

 

二、log4j2.xml配置文件

 

     
         
              
       
        %d{yyyy-MM-dd HH:mm:ss.SSS} [%t] [%level] %logger{36} - %msg%n
               
       
        log4j2learn.log
           
          
              
                   
                
               
                   
                
               
                   
                
           
          
              
                   
                    
                
               
                   
                
           
      
     

 

 

三、测试代码

 

 

import org.apache.logging.log4j.LogManager;import org.apache.logging.log4j.Logger;/** * @author : zhangyanqing * @time : 2017/12/9 * @desc : 输出日志到文件 */public class FileLoggerTest {    public static final Logger LOGGER = LogManager.getLogger("AsyncFileLogger");    public static void main(String[] args){        LOGGER.trace("trace level");        LOGGER.debug("debug level");        LOGGER.info("info level");        LOGGER.warn("warn level");        LOGGER.error("error level");        LOGGER.fatal("fatal level");    }}