[开发工具]Log日志控制台输出

1. @Log4j2 注解

   <dependency>    
   	<groupId>org.projectlombok</groupId>    
   	<artifactId>lombok</artifactId>
   </dependency>
   

   注：idea 加入依赖以后，还需要引入lombok 插件

2. log4j2

   <dependencies>
   	<dependency>  
           <groupId>org.apache.logging.log4j</groupId>  
           <artifactId>log4j-api</artifactId>  
           <version>2.5</version>  
       </dependency>  
       <dependency>  
           <groupId>org.apache.logging.log4j</groupId>  
           <artifactId>log4j-core</artifactId>  
           <version>2.5</version>  
       </dependency>  
   </dependencies>
   

   private static Logger log = LogManager.getLogger(LogManager.ROOT_LOGGER_NAME);
   

3. slf4j

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