开发便捷知识点

1.@log4j注解

如果不想每次都写private final Logger logger = LoggerFactory.getLogger(当前类名.class); 可以用注解@Slf4j;
需要导入lombok包

<dependency>
    <groupId>org.projectlombok</groupId>
    <artifactId>lombok</artifactId>
    <version>1.18.22</version>
</dependency>