쿠팡 api spring boot java

 

스프링 부트 프로젝트를 생성하고 그 프로젝트에서 쿠팡 api를 사용해 만들 응용프로그램이 있어서 쿠팡 api 연동 테스트를 해봤다.

 

 

1. coupang_api 폴더(패키지)를 만들고 안에 쿠팡 api문서에서 제공하는 테스트 코드를 그대로 java파일로 만들어 준다.

 

 

HmacGenerator.java

package com.coupang_api.Coupang_api;
import org.apache.commons.codec.binary.Hex;



import javax.crypto.Mac;
import javax.crypto.spec.SecretKeySpec;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.security.GeneralSecurityException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.TimeZone;


public class HmacGenerator {
    private static final String ALGORITHM = "HmacSHA256";
//    private static final Charset STANDARD_CHARSET = Charset.forName("UTF-8");
    private static final Charset STANDARD_CHARSET = StandardCharsets.UTF_8;

    /**
     * Generate HMAC signature
     * @param method
     * @param uri http request uri
     * @param secretKey secret key that Coupang partner granted for calling open api
     * @param accessKey access key that Coupang partner granted for calling open api
     * @return HMAC signature
     */
    public static String generate(String method, String uri, String secretKey, String accessKey) {
        String[] parts = uri.split("\\?");
        if (parts.length > 2) {
            throw new RuntimeException("incorrect uri format");
        } else {
            String path = parts[0];
            String query = "";
            if (parts.length == 2) {
                query = parts[1];
            }

            SimpleDateFormat dateFormatGmt = new SimpleDateFormat("yyMMdd'T'HHmmss'Z'");
            dateFormatGmt.setTimeZone(TimeZone.getTimeZone("GMT"));
            String datetime = dateFormatGmt.format(new Date());
            String message = datetime + method + path + query;

            String signature;
            try {
                SecretKeySpec signingKey = new SecretKeySpec(secretKey.getBytes(STANDARD_CHARSET), ALGORITHM);
                Mac mac = Mac.getInstance(ALGORITHM);
                mac.init(signingKey);
                byte[] rawHmac = mac.doFinal(message.getBytes(STANDARD_CHARSET));
                signature = Hex.encodeHexString(rawHmac);

            } catch (GeneralSecurityException e) {
                throw new IllegalArgumentException("Unexpected error while creating hash: " + e.getMessage(), e);
            }

            return String.format("CEA algorithm=%s, access-key=%s, signed-date=%s, signature=%s", "HmacSHA256", accessKey, datetime, signature);
        }
    }
}

 

OpenApiTestApplication.java

package com.coupang_api.Coupang_api;

import org.apache.http.entity.StringEntity;
import org.apache.http.util.EntityUtils;
import org.apache.http.HttpHost;
import org.apache.http.HttpRequest;
import org.apache.http.HttpResponse;
import org.apache.http.client.methods.RequestBuilder;
import org.apache.http.impl.client.HttpClientBuilder;

import java.io.IOException;

public class OpenApiTestApplication {    private final static String REQUEST_METHOD = "POST";
    private final static String DOMAIN = "https://api-gateway.coupang.com";
    private final static String URL = "/v2/providers/affiliate_open_api/apis/openapi/deeplink";
    // Replace with your own ACCESS_KEY and SECRET_KEY
    private final static String ACCESS_KEY = "YOUR_ACCESS_KEY";
    private final static String SECRET_KEY = "YOUR_SECRET_KEY";

    private final static String REQUEST_JSON = "{\"coupangUrls\": [\"https://www.coupang.com/np/search?component=&q=good&channel=user\",\"https://www.coupang.com/np/coupangglobal\"]}";

    public static void main(String[] args) throws IOException {
        // Generate HMAC string
        String authorization = HmacGenerator.generate(REQUEST_METHOD, URL, SECRET_KEY, ACCESS_KEY);

        // Send request
        StringEntity entity = new StringEntity(REQUEST_JSON, "UTF-8");
        entity.setContentEncoding("UTF-8");
        entity.setContentType("application/json");

        org.apache.http.HttpHost host = org.apache.http.HttpHost.create(DOMAIN);
        org.apache.http.HttpRequest request = org.apache.http.client.methods.RequestBuilder
                .post(URL).setEntity(entity)
                .addHeader("Authorization", authorization)
                .build();

        org.apache.http.HttpResponse httpResponse = org.apache.http.impl.client.HttpClientBuilder.create().build().execute(host, request);

        // verify
        System.out.println(EntityUtils.toString(httpResponse.getEntity()));
    }
}

 

 

두 java 파일 모두 테스트 코드 그대로이다. 

 

2. gradle 의존성 추가

(maven을 사용하는 사람은 구글링으로 찾아보시고)

gradle에 apache commons-codec 라이브러리와 httpclient 라이브러리를 추가해줘야 한다.

 

build.gradle 의존성 추가해준다.

implementation 'commons-codec:commons-codec:1.14'
implementation 'org.apache.httpcomponents:httpclient:4.5.11'

 

 

 

3. OpenApiTestApplication 클래스 메인 메소드 실행.

클래스 옆 실행 버튼으로 실행해준다.

 

 

EntityUtils.toString(httpResponse.getEntity()) 값이 json으로 잘 도착하면, 잘 실행이 된것이다.

 

 

결과 값 : 

{"rCode":"0","rMessage":"","data":[{"originalUrl":"https://www.coupang.com/np/search?component=&q=good&channel=user","shortenUrl":"https://coupa.ng/bnSB0O","landingUrl":"https://link.coupang.com/re/AFFSRP?lptag=AF5139617&pageKey=good&traceid=V0-183-c890f6fb18804fe8"},{"originalUrl":"https://www.coupang.com/np/coupangglobal","shortenUrl":"https://coupa.ng/bnSB0P","landingUrl":"https://link.coupang.com/re/AFFJIKGU?lptag=AF5139617&traceid=V0-183-50c6c2b97fba9aee"}]}

 

 

결과값이 잘안나온다면 쿠팡 api에 에러 코드에 대한 설명이 있으니 참고 해보는게 좋겠다.