springboot使用小工具之Lombok、devtools、SpringInitailizr详解

<!-- https://mvnrepository.com/artifact/org.projectlombok/lombok -->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.12</version>
            <scope>provided</scope>
        </dependency>

package com.atguigu.boot.bean;

import lombok.*;
import org.springframework.boot.context.properties.ConfigurationProperties;

@Data//get、set
@AllArgsConstructor//全参构造方法
@NoArgsConstructor//无参构造方法
@ToString
@EqualsAndHashCode
@ConfigurationProperties(prefix = "mycar")//设置前缀为mycar，它将会自动跟字段对应
public class Car {
    private String brand;
    private Integer price;
}

package com.atguigu.boot.controller;

import com.atguigu.boot.bean.Car;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.WEB.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@Slf4j//使用注解
@RestController
public class HelloController {

    @Autowired
    private Car car;//从spring容器中自动注入

    @RequestMapping("/hello")
    public String handle01() {
        return "Hello, Spring Boot 2!";
    }

    @GetMapping("/car")
    public Car car() {
        log.info("请求car");//代替sout
        return car;
    }
}

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-devtools</artifactId>
        <optional>true</optional>
    </dependency>
</dependencies>