PUT API / DELETE API

12 Oct 2021 - 1 minute read

PUT API

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• PutApiController.java

    package com.example.put;
  
    import dto.PostRequestDto;
    import org.springframework.web.bind.annotation.PutMapping;
    import org.springframework.web.bind.annotation.RequestBody;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RestController;
  
    @RestController
    @RequestMapping("/api")
    public class PutApiController {
  
        @PutMapping("/put")
        // public void put(@RequestBody PostRequestDto requestDto){
        //    System.out.println(requestDto);
      
      
        public PostRequestDto put(@RequestBody PostRequestDto requestDto){
            return requestDto;
        // 객체(클래스)의 형태에 이름의 룰을 가지고 바로 제이슨의 데이터로 바꿔서 response가 내려가도록 할 수 있음
        }
    }
  

• PostRequestDto.java

    package dto;
    import com.fasterxml.jackson.databind.PropertyNamingStrategy;
    import com.fasterxml.jackson.databind.annotation.JsonNaming;
  
    import java.util.List;
  
    @JsonNaming(value = PropertyNamingStrategy.SnakeCaseStrategy.class)
   
    public class PostRequestDto {
  
        private String name;
        private int age;
        private List<CarDto> carList;
  
        public String getName() {
            return name;
        }
  
        public void setName(String name) {
            this.name = name;
        }
  
        public int getAge() {
            return age;
        }
  
        public void setAge(int age) {
            this.age = age;
        }
  
        public void setCarList(List<CarDto> carList) {
            this.carList = carList;
        }
  
        public List<CarDto> getCarList() {
            return carList;
        }
  
        @Override
        public String toString() {
            return "PostRequestDto{" +
                    "name='" + name + '\'' +
                    ", age=" + age +
                    ", carList=" + carList +
                    '}';
        }
    }
  

• CarDto.java

    package dto;
  
    import com.fasterxml.jackson.annotation.JsonProperty;
    import com.fasterxml.jackson.databind.PropertyNamingStrategy;
    import com.fasterxml.jackson.databind.annotation.JsonNaming;
  
    public class CarDto {
  
        @JsonProperty("car_name")
        private String carName;
        @JsonProperty("car_number")
        private String carNumber;
  
        public String getCarName() {
            return carName;
        }
  
        public void setCarName(String carName) {
            this.carName = carName;
        }
  
        public String getCarNumber() {
            return carNumber;
        }
  
        public void setCarNumber(String carNumber) {
            this.carNumber = carNumber;
        }
  
        @Override
        public String toString() {
            return "CarDto{" +
                    "carName='" + carName + '\'' +
                    ", carNumber='" + carNumber + '\'' +
                    '}';
        }
    }
  

  
  

  

  
  

  

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@JsonNaming()

• @JsonNaming

  JSON 데이터 key와 자바 파일에서 필드명이 다를 때 @JsonProperty()를 사용해 매핑 가능

  ->

  필드가 많아진다면? 각 필드마다 @JsonProperty 사용해아 하는 번거로움

  ->

  @JsonNaming 사용! : 클래스에 있는 모든 필드에 대해 적용 가능

    @JsonNaming(value = PropertyNamingStrategy.SnakeCaseStrategy.class)
  

DELETE API

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• delete : 리소스 삭제

package controller;

import org.springframework.web.bind.annotation.*;

@RestController
@RequestMapping("/api")
public class DeleteApiController {

    @DeleteMapping("/delete/{userId}")
    public void delete(@PathVariable String userId, @RequestParam String account){
    // ex) http://localhost:8080/api/delete/100?account=user01

        System.out.println(userId);
        System.out.println(account);
    }
}