[코디'ing] 이미지를 서버에 업로드 해보자

cors 문제는 해결을 했는데 이미지가 올라가지 않았다. 해결법은 aws s3 설정이였다.

https://innovation123.tistory.com/197 님을 참고하였다.

AwsS3Config.java

@Configuration
public class AwsS3Config {
    @Value("${cloud.aws.credentials.access-key}")
    private String accessKey;
    @Value("${cloud.aws.credentials.secret-key}")
    private String secretKey;
    @Value("${cloud.aws.region.static}")
    private String region;
    @Bean
    public AmazonS3Client amazonS3Client() {
        BasicAWSCredentials awsCreds = new BasicAWSCredentials(accessKey, secretKey);
        return (AmazonS3Client) AmazonS3ClientBuilder.standard()
                .withRegion(region)
                .withCredentials(new AWSStaticCredentialsProvider(awsCreds))
                .build();
    }
}

AmazonS3Controller.java

@RestController
@RequiredArgsConstructor
@RequestMapping("/s3")
@CrossOrigin
public class AmazonS3Controller {
    private final AwsS3Service awsS3Service;
    @PostMapping("/image")
    public ResponseEntity<String> uploadImage(@RequestPart MultipartFile multipartFile) {
        return ApiResponse.success(awsS3Service.uploadImage(multipartFile));
    }
    @DeleteMapping("/image")
    public ResponseEntity<Void> deleteImage(@RequestParam String fileName) {
        awsS3Service.deleteImage(fileName);
        return ApiResponse.success(null);
    }
}

ApiResponse.java

@Getter
public class ApiResponse<T> {
    public static <T> ResponseEntity<T> success(T body) {
        return ResponseEntity.status(HttpStatus.OK).body(body);
    }
    public static <T> ResponseEntity<T> created(T body) {
        return ResponseEntity.status(HttpStatus.CREATED).body(body);
    }
    public static <T> ResponseEntity<T> fail(T body) {
        return ResponseEntity.status(HttpStatus.NOT_FOUND).body(body);
    }
    public static <T> ResponseEntity<T> forbidden(T body) {
        return ResponseEntity.status(HttpStatus.FORBIDDEN).body(body);
    }
}

AwsS3Service.java

@Service
@RequiredArgsConstructor
public class AwsS3Service {
    private final AmazonS3 amazonS3;
    @Value("${cloud.aws.s3.bucket}")
    private String bucket;
    public String uploadImage(MultipartFile multipartFile) {
        String fileName = createFileName(multipartFile.getOriginalFilename());
        ObjectMetadata objectMetadata = new ObjectMetadata();
        objectMetadata.setContentLength(multipartFile.getSize());
        objectMetadata.setContentType(multipartFile.getContentType());
        try(InputStream inputStream = multipartFile.getInputStream()) {
            amazonS3.putObject(new PutObjectRequest(bucket, fileName, inputStream, objectMetadata)
                    .withCannedAcl(CannedAccessControlList.PublicRead));
        } catch(IOException e) {
            throw new ResponseStatusException(HttpStatus.INTERNAL_SERVER_ERROR, "이미지 업로드에 실패했습니다.");
        }
        return fileName;
    }
    public void deleteImage(String fileName) {
        amazonS3.deleteObject(new DeleteObjectRequest(bucket, fileName));
    }
    private String createFileName(String fileName) {
        return UUID.randomUUID().toString().concat(getFileExtension(fileName));
    }
    private String getFileExtension(String fileName) {
        try {
            return fileName.substring(fileName.lastIndexOf("."));
        } catch (StringIndexOutOfBoundsException e) {
            throw new IllegalArgumentException(String.format("잘못된 형식의 파일 (%s) 입니다.", fileName));
        }
    }
}