工程准备：创建maven工程

1.选择maven直接next

2.输入组织、工程名和版本号点击next,然后在下一个界面直接finish

3.配置maven本地地址

4.引入依赖创建springBoot的启动，Application类

    <!--父pop-->
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.3.RELEASE</version>
    </parent>

    <!--springBoot核心web依赖-->
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId> org.springframework.boot </groupId>
            <artifactId> spring-boot-configuration-processor </artifactId>
            <optional> true </optional>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
        </dependency>

        <!--热部署-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
        </dependency>


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

package com.fuke;

import org.springframework.boot.ApplicationRunner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class Application {
    public static void main(String[] args) {
        SpringApplication.run(Application.class);
    }
}

5.配置springMvc，创建yml文件，名称为application.yml

5.1配置端口号及服务器启动后的springMVC加载顺序

server:
  port: 80
spring:
  mvc:
    servlet:
      load-on-startup: 1

6.日志级别输出的配置

配置日志的输出地址和日志的输入级别

logging:
  path: E:\test.log
  level:
    com.fuke: debug

在代码中使用log输出的方式

1.直接获取一个log实例

Logger logger = LoggerFactory.getLogger(MyController.class);
        logger.debug("111");

2.再类上添加注解@Slf4j当前类就可以使用

log.debug("22");