SpringBoot使用@Slf4j注解在控制台打印日志

1. 导入lombok依赖

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

2. 在springboot组件类上使用注解, 使用log对象打印日志信息

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import lombok.extern.slf4j.Slf4j;

@RestController
@RequestMapping("/")
@Slf4j
public class IndexController{
    @GetMapping("/index)
    public String index(){
        //TODO
        log.info("info massage");
        log.debug("debug massage");
        log.warn("warn massage");
        log.error("error massage");
        log.trace("trace massage");
    }
}