Merge pull request #41 from GDSC-Ewha-5th/YangDongseon

[양동선] 5주차 과제 -complete

5주차 Sever S-Day 과제/S3Controller.java

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+package ServerStudy5Cloud.ServerStudy5Cloud.Controller;
+
+import com.amazonaws.services.s3.AmazonS3;
+import com.amazonaws.services.s3.model.CannedAccessControlList;
+import com.amazonaws.services.s3.model.ObjectMetadata;
+import com.amazonaws.services.s3.model.S3ObjectSummary;
+import lombok.RequiredArgsConstructor;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.multipart.MultipartFile;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+
+//영상 링크 : https://drive.google.com/file/d/17tmgRlWb4g0ZRuUKt6pvBlmmw-NqpDHR/view?usp=sharing
+@Controller
+@RequiredArgsConstructor
+public class S3Controller {
+
+    private final AmazonS3 amazonS3;
+
+    @Value("${cloud.aws.s3.bucket}")
+    private String bucketName;
+
+    @GetMapping("/")
+    public String listFiles(Model model) {
+        List<String> fileUrls = new ArrayList<>();
+        List<S3ObjectSummary> objectSummaries = amazonS3.listObjects(bucketName).getObjectSummaries();
+        // 객체 URL을 리스트에 추가
+        for (S3ObjectSummary objectSummary : objectSummaries) {
+            fileUrls.add(amazonS3.getUrl(bucketName, objectSummary.getKey()).toString());
+        }
+        // 모델에 URL 리스트 추가
+        model.addAttribute("fileUrls", fileUrls);
+        return "index";
+    }
+
+    @PostMapping("/upload")
+    public String uploadFile(@RequestParam("file") MultipartFile file) {
+        try {
+            /// ObjectMetadata 인스턴스 생성
+            ObjectMetadata metadata = new ObjectMetadata();
+
+            // content type (MIME type)세팅
+            metadata.setContentType(file.getContentType());
+
+            // S3에 파일 업로드
+            amazonS3.putObject(bucketName, file.getOriginalFilename(), file.getInputStream(), metadata);
+
+            // ACL를 public-read로
+            amazonS3.setObjectAcl(bucketName, file.getOriginalFilename(), CannedAccessControlList.PublicRead);
+
+
+            return "redirect:/";
+        } catch (IOException e) {
+            // Handle the exception appropriately (e.g., log it or show an error message)
+            return "error";
+        }
+
+    }
+}

5주차 Sever S-Day 과제/양동선_5주차_과제.md

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+## 과정
+1. 인스턴스 생성(EC2)
+2. 보안자격증명 > 키 생성
+3. index.html과 S3Controller 파일 수정
+4. main 메소드를 실행한 후 결과 확인 !
+
+## 난관
+해결 : test를 돌리는데 안돼서 당황했지만, 코어멤버 혜승님께서 main 메소드를 돌리는 것을 알려주셨다!! 서비스를 구동하려면 main메소드를 돌리는 것이구나..
+
+귀여운 미리보기
+<img width="348" alt="스크린샷 2023-11-17 오후 10 54 53" src="https://github.com/GDSC-Ewha-5th/GDSC-Server-5th/assets/78548833/b9f72842-ccfe-4d8d-b42d-2232edf27d5c">