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๋ชฉ๋ก๋ถ๋ฅ ์ ์ฒด๋ณด๊ธฐ (213)
JiYoung Dev ๐ฅ
REST API(Representational State Transfer API) ๊ตฌ์ฑ 1. ์์(RESOURCE) - URI 2. ํ์(Verb) - HTTP METHOD 3. ํํ(Representations) REST API ๋์์ธ ๊ฐ์ด๋ REST API ์ค๊ณ์ ๊ฐ์ฅ ์ค์ํ ํญ๋ชฉ 2๊ฐ์ง : URI, HTTP Method 1. URI๋ ์ ๋ณด์ ์์์ ํํํด์ผ ํ๋ค. - ๋ฆฌ์์ค๋ช ์ ๋์ฌ๋ณด๋ค๋ ๋ช ์ฌ๋ฅผ ์ฌ์ฉ - ์ข์ง ์์ ์ : GET /members/delete/1 --> delete์ ๊ฐ์ ํ์์ ๋ํ ํํ์ด ๋ค์ด๊ฐ์๋ ์๋จ - ์ข์ ์ : DELETE /members/1 2. ์์์ ๋ํ ํ์๋ HTTP Method(GET, POST, PUT, DELETE ๋ฑ)๋ก ํํ - GET /members/de..
@SeverEndPoint๊ฐ ์๋ ์ปจํธ๋กค๋ฌ์์ @Autowired ์ฌ์ฉ ์ ์ค๋ฅ ๋ฐ์ ์ ํด๊ฒฐ ๋ฐฉ๋ฒ @ServerEndPoint๋ก ์ด๋ ธํ ์ด์ ์ด ๋ฌ๋ฆฐ ํด๋์ค๋ WebSocket์ด ์ฐ๊ฒฐ๋ ๋๋ง๋ค ์ธ์คํด์ค๊ฐ ์์ฑ๋๊ณ JWA๊ตฌํ์ ์ํด ๊ด๋ฆฌ๊ฐ ๋์ด ๋ด๋ถ์ @Autowired๊ฐ ์ค์ ๋ ๋ฉค๋ฒ๊ฐ ์ ์์ ์ผ๋ก ์ด๊ธฐํ ๋์ง ์๋๋ค. @Autowired๋ฅผ ์ฌ์ฉํ๊ธฐ ์ํด์ ServerEndpointConfig.Configurator๋ฅผ ์์๋ฐ์ ServerEndPoint์ ์ปจํ ์คํธ์ BeanFactory ๋๋ ApplicationContext๋ฅผ ์ฐ๊ฒฐํด ์ฃผ๋ ์์ ์ ํ๋ ์ค์ ์ ์ถ๊ฐํด์ผ ํ๋ค. MyServerEndPointConfig package com.sjy.chat.websocket; import org.springfram..
List.toArray() - ๊ธฐ๋ณธ ํ์ ์ ์๋ฃํ (ex. int[])๋ก๋ ๋ณํ ๋ถ๊ฐ๋ฅ Integer[] answer = arr.toArray(new Integer[arr.size()]); public Integer[] solution(int[] numbers) { ArrayList arr = new ArrayList(); int idx = 0; for(int i = 0 ; i < numbers.length ; i++){ for(int j = i + 1 ; j < numbers.length ; j++){ int sum = numbers[i] + numbers[j]; if(!arr.contains(sum)) { arr.add(sum); }; } } arr.sort(Comparator.naturalOrder..
.sort() - ์ค๋ฆ์ฐจ์ ์ ๋ ฌ : Comparator.naturalOrder() - ๋ด๋ฆผ์ฐจ์ ์ ๋ ฌ : Comparator.reverseOrder() public Integer[] solution(int[] numbers) { ArrayList arr = new ArrayList(); int idx = 0; for(int i = 0 ; i < numbers.length ; i++){ for(int j = i + 1 ; j < numbers.length ; j++){ int sum = numbers[i] + numbers[j]; if(!arr.contains(sum)) { arr.add(sum); }; } } arr.sort(Comparator.naturalOrder()); Integer[] answer ..
append() ํฌ๊ธฐ๊ฐ ์ ํด์ง์ง ์์ ๋ฐฐ์ด์ ์ธ๋ฑ์ค ์ฌ์ฉํ๋ฉด ์ค๋ฅ ๋ฐํํจ → IndexError: list assignment index out of range ๋ฐ๋ผ์ ํฌ๊ธฐ๊ฐ ์ง์ ๋์ง ์์ ๋ฐฐ์ด์ ๊ฐ์ ์ถ๊ฐํ๊ธฐ ์ํด์๋ append()๋ฅผ ์ฌ์ฉํ ์ ์์ def solution(num_list): answer = [] odd = 0 even = 0 for i in num_list: if i % 2 == 0 : even += 1 else: odd += 1 answer.append(even) answer.append(odd) return answer
for i in reversed(range(n)): ํน์ for i in range(n, 0, -1): def solution(my_string): answer = '' for i in reversed(range(len(my_string))): answer += my_string[i] return answer
Spring boot - JPA ํ์ฉ ๊ฒ์ํ ์ฒจ๋ถํ์ผ ๊ธฐ๋ฅ ์ถ๊ฐํ๊ธฐ FIleStore ์ฝคํฌ๋ํธ ์ถ๊ฐ ์ฒจ๋ถํ์ผ ์ ์ฅ ๊ฒฝ๋ก ์ง์ ์ฒจ๋ถํ์ผ ์ด๋ฆ ๋ณํ (์์ฑ์๊ฐ ์ ๋ก๋ํ ํ์ผ๋ช → ์๋ฒ ๋ด๋ถ์์ ๊ด๋ฆฌํ๋ ํ์ผ๋ช ) ํ์ผ ์ ์ฅ package com.sjy.shopping.attachfile; import java.io.File; import java.io.IOException; import java.util.UUID; import org.springframework.stereotype.Component; import org.springframework.web.multipart.MultipartFile; import com.sjy.shopping.model.entity.UploadFile; @Component pu..
round() ํจ์ ์ฌ์ฉ round(number, ์๋ฆฟ์) def solution(num1, num2): answer = round(num1 / num2 * 1000, 0) return answer
String.valueOf() public String solution(String s) { String answer = ""; char[] arr = s.toCharArray(); int idx = 0; for(int i = 0 ; i < arr.length ; i++) { if(arr[i] != 32) { if(idx % 2 == 0) { answer += String.valueOf(arr[i]).toUpperCase(); } else { answer += String.valueOf(arr[i]).toLowerCase(); } idx++; }else { idx=0; answer += " "; } } return answer; }
Arrays.copyOf(๋ฐฐ์ด, ๋ณ๊ฒฝํ๊ณ ์ ํ๋ ํฌ๊ธฐ) copyOf๋ก ๋ฐฐ์ด ๋ณตํํ๊ณ ์ํ๋ ํฌ๊ธฐ๋ก ์ง์ class Solution { public int[] solution(int []arr) { int idx = 1; int[] answer = new int[arr.length]; answer[0] = arr[0]; for(int i = 1 ; i < arr.length ; i++) { if(arr[i] != arr[i-1]) { answer[idx] = arr[i]; idx++; } } int[] copy = Arrays.copyOf(answer, idx); return copy; } }