@Controller
@SpringBootApplication
public class PromobootApplication {

    public static void main(String[] args) {
        SpringApplication.run(PromobootApplication.class, args);
    }

    @RequestMapping("/")
    @ResponseBody
    String home() {
        return "Hello World!";
    }
}

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

mvn spring-boot:run -Drun.jvmArguments="-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=5005"

// 获取单个配置值
@Value("${xx.oo}")

// 自定义对象注入
@Component
@ConfigurationProperties

@Value("${params.env}")
private String env;

@Component
@ConfigurationProperties(prefix = "apple")
public class Apple {

    private String name;

    private int size;

    private String color;

    private int weight;

    public String getName() {
        return name;
    }
    ......

@Autowired
private Apple apple;

@RestController = @Controller + @ResponseBody

@GetMapping(value="xx") = @RequestMapping(value = "xx", method = RequestMethod.GET)
@PostMapping(value="xx") = @RequestMapping(value = "xx", method = RequestMethod.POST)

@Entity
@Table(name = "robot")
public class RobotDO {

    @Id
    @GeneratedValue
    private long id;

    @Column(nullable = false)
    private String robotName;

    private String size;

    @Column(name = "robot_type")
    private String type;

    private Date gmtCreate;

    private Date gmtModified;

public interface RobotDAO extends JpaRepository<RobotDO, Integer> {

}

@SpringBootApplication
@RestController
public class TestController {

    Logger logger = Logger.getLogger(this.getClass());

    @Autowired
    private Apple apple;

    @Autowired
    private RobotDAO robotDAO;

    @GetMapping(value = "/test")
    public Object testController() {
        logger.info("=====================Visiting  test controller======================");

        logger.info("测试插入:");
        RobotDO robotDO = new RobotDO();
        robotDO.setRobotName("Wall-E");
        robotDO.setSize("Huge");
        robotDO.setType("AI");
        robotDAO.save(robotDO);

        logger.info("测试查找:");
        logger.info(robotDAO.findAll());

        return apple;
    }

@Aspect
@Component
@Order(1)
public class ControllerAspect {
    private Logger logger = Logger.getLogger(this.getClass());

    @Pointcut("execution(public * com.alipay.liuqi.controller.TestController.testController())")
    public void webController() {

    }

    @Before(value = "webController()")
    public void beforeWebController() {
        logger.info("===BeforeWebController: start visiting===");
    }

    @After(value = "webController()")
    public void afterWebController() {
        logger.info("====AfterWebController: end visiting===");
    }

    @AfterThrowing(value = "webController()")
    public void afterThrowWebController() {
        logger.info("====AfterThrowWebController: throw exception ===");
    }

    @AfterReturning(value = "webController()")
    public void afterReturnWebControlelr() {
        logger.info("====AfterReturnWebControlelr: return normal ===");
    }

    @Around(value = "webController()")
    public void aroundWebController(ProceedingJoinPoint proceedingJoinPoint) throws Throwable {
        logger.info("====AroundWebController: start around ===");
        proceedingJoinPoint.proceed();
        logger.info("====AroundWebController: end around ===");
    }
}