feat: html 크롤링 방식과 naver api 방식을 조합하는 Extractor 구현

backend/src/main/java/com/zzang/chongdae/offering/config/OfferingConfig.java

@@ -1,8 +1,13 @@
 package com.zzang.chongdae.offering.config;
 
+import com.zzang.chongdae.offering.service.CombinationProductImageExtractor;
 import com.zzang.chongdae.offering.service.NaverApiProductImageExtractor;
+import com.zzang.chongdae.offering.service.OgTagProductImageExtractor;
 import com.zzang.chongdae.offering.service.ProductImageExtractor;
+import com.zzang.chongdae.offering.util.httpclient.crawler.HtmlCrawler;
+import com.zzang.chongdae.offering.util.httpclient.crawler.JsoupHtmlCrawler;
 import com.zzang.chongdae.offering.util.httpclient.naver.NaverScrapClient;
+import java.util.List;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 
@@ -16,8 +21,17 @@ public NaverScrapClient naverScrapClient() {
         return new NaverScrapClient(CRAWLER_TIMEOUT_MILLISECONDS);
     }
 
+    @Bean
+    public HtmlCrawler htmlCrawler() {
+        return new JsoupHtmlCrawler(CRAWLER_TIMEOUT_MILLISECONDS);
+    }
+
     @Bean
     public ProductImageExtractor productImageExtractor() {
-        return new NaverApiProductImageExtractor(naverScrapClient());
+        List<ProductImageExtractor> extractors = List.of(
+                new OgTagProductImageExtractor(htmlCrawler()),
+                new NaverApiProductImageExtractor(naverScrapClient())
+        );
+        return new CombinationProductImageExtractor(extractors);
     }
 }

backend/src/main/java/com/zzang/chongdae/offering/service/CombinationProductImageExtractor.java

@@ -0,0 +1,27 @@
+package com.zzang.chongdae.offering.service;
+
+import java.util.List;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Component;
+
+@RequiredArgsConstructor
+@Component
+public class CombinationProductImageExtractor implements ProductImageExtractor {
+
+    private final List<ProductImageExtractor> extractors;
+
+    @Override
+    public String extract(String productUrl) {
+        for (ProductImageExtractor extractor : extractors) {
+            String imageUrl = extractor.extract(productUrl);
+            if (isExtractSuccess(imageUrl)) {
+                return imageUrl;
+            }
+        }
+        return "";
+    }
+
+    private boolean isExtractSuccess(String imageUrl) {
+        return !imageUrl.isEmpty();
+    }
+}

backend/src/main/java/com/zzang/chongdae/offering/service/OgTagProductImageExtractor.java

@@ -2,8 +2,10 @@
 
 import com.zzang.chongdae.offering.util.httpclient.crawler.HtmlCrawler;
 import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Component;
 
 @RequiredArgsConstructor
+@Component
 public class OgTagProductImageExtractor implements ProductImageExtractor {
 
     public static final String OG_IMAGE_PROPERTY = "og:image";