Spring Boot - RestAPI

REST 의 개념

• HTTP 프로토콜에 있는 Method를 활용한 아키텍처 스타일 이다.
• HTTP Method 를 통해서 Resource를 처리 한다.
• CRUD 를 통한 Resource 조작을 할 때 사용 한다.

 

 

GetController.java

package com.example.study.controller;

import com.example.study.model.SearchParam;
import org.springframework.web.bind.annotation.*;

@RestController
@RequestMapping("/api") // localhost:8080/api
public class GetController {

    @RequestMapping(method = RequestMethod.GET, path = "/getMethod")    // localhost:8080/api/getMethod
    public String getRequest() {

        return "Hi getMethod";
    }

    @GetMapping("/getParameter")    // localhost:8080/api/getParameter?id=1234&password=abcd
    public String getParameter(@RequestParam String id, @RequestParam(name = "password") String pwd) {
        String password = "bbbb";
        System.out.println("id : " + id);
        System.out.println("pwd : " + pwd);

        return id + pwd;
    }

    // localhost:8080/api/multiParameter?account=abcd&email=study@gamil.com&page=10
    @GetMapping("/getMultiParameter")
    public SearchParam getMultiParameter(SearchParam searchParam) {
        System.out.println(searchParam.getAccount());
        System.out.println(searchParam.getEmail());
        System.out.println(searchParam.getPage());

        // {"account" : "" : "email" : "", "page" : 0}
        return searchParam;
    }
}

 

PostController.java

package com.example.study.controller;

import com.example.study.model.SearchParam;
import org.springframework.web.bind.annotation.*;

@RestController
@RequestMapping("/api") // localhost:8080/api
public class PostController {

    // HTML <Form>
    // ajax 검색
    // http post body -> data
    // json, xml, multipart-form / text-plain

    @PostMapping(value = "/postMethod")
    public SearchParam postMethod(@RequestBody SearchParam searchParam){
        return searchParam;
    }
    @PutMapping("/putMethod")
    public void put(){

    }
    @PatchMapping("/patchMethod")
    public void patch(){

    }
}

 

SearchParam.java

package com.example.study.model;

public class SearchParam {

    private String account;
    private String email;
    private int page;

    // {"account" : "" : "email" : "", "page" : 0}

    public String getAccount() {
        return account;
    }

    public void setAccount(String account) {
        this.account = account;
    }

    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }

    public int getPage() {
        return page;
    }

    public void setPage(int page) {
        this.page = page;
    }
}