不知是否是版本问题，引入@Slf4j 注解之后并不能直接引用log的api
代码如下
package com.mmall.controller;

import lombok.extern.slf4j.Slf4j;
import org.slf4j.Logger;

import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

@Controller
@RequestMapping("/test")
@Slf4j
public class TestController {
private static Logger logger = LoggerFactory.getLogger(TestController.class);

@RequestMapping("/hello")
@ResponseBody
public String hello(){
    logger.info("info");
    return "hello,permission";
}

}