SpringBoot 最简单的日志使用方法

目录

1.maven依赖

        <!-- 基础组件-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!-- @Slf4简化日志 -->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>

因为springboot就是这么牛逼，自带了日志组件

2.类前加@Slf4j

package com.zk.kfcloud.Controller;


import com.zk.kfcloud.Dao.UserMapper;
import com.zk.kfcloud.Entity.web.User;
import lombok.extern.slf4j.Slf4j;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;

@Slf4j
@RestController
public class testMyBatis {

    @Autowired
    private UserMapper userMapper;

    @GetMapping("/findAll")
    List<User> findall(){
        List<User> allUsers = userMapper.findAllUsers();
        log.info("info");
        log.debug("debug");
        log.warn("warn");
        log.error("error");
        return allUsers;
    }
}

3.如果提示can not resolve log

• 安装lombok插件,idea->file->seetings->puugins->选择lombok Plugin即可