@Slf4j注解

参考：https://blog.csdn.net/qq_26344609/article/details/78905845

如果不想每次都写private final Logger logger = LoggerFactory.getLogger(XXX.class); 可以用注解@Slf4j

一、在pom文件加入依赖

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

package com.sell;
import lombok.extern.slf4j.Slf4j;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.junit.runner.RunWith;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

/**
 *   日志测试
 */

@RunWith(SpringRunner.class)
@SpringBootTest
@Slf4j
public class LoggerTest {

    private  final Logger logger = LoggerFactory.getLogger(LoggerTest.class);
    /**
     * 一、传统方式实现日志
     */
    @Test
    public  void test1(){
        logger.debug("debug message");
        logger.warn("warn message");
        logger.info("info message");
        logger.error("error message");
        logger.trace("trace message");
    }


    /**
     * 二、注解方式实现日志
     */
    @Test
   public  void test2(){
        log.debug("debug message");
        log.warn("warn message");
        log.info("info message");
        log.error("error message");
        log.trace("trace message");
    }

}
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作者：好运哥888 
来源：CSDN 
原文：https://blog.csdn.net/qq_26344609/article/details/78905845 
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