java - 将多部分文件上传到S3

Question

我正在使用 Spring Boot，并且我有一个来自请求的多部分文件，我需要上传到 S3，但 S3 仅支持文件(不支持多部分文件)上传到 S3。如何将多部分文件上传到s3

Answer 1

您可以执行以下操作:

public class S3Utility{
    public static String upload(String bucket, String fileName, InputStream inputStream, String contentType, AmazonS3 s3Client, boolean isPublic) {
    if (inputStream != null) {
      try {
        ObjectMetadata meta = new ObjectMetadata();
        meta.setContentLength(inputStream.available());
        meta.setContentType(contentType);

        PutObjectRequest putObjectRequest = new PutObjectRequest(bucket, fileName, inputStream, meta);

        if (isPublic) {
          putObjectRequest = putObjectRequest.withCannedAcl(CannedAccessControlList.PublicRead);
        }

        PutObjectResult result = S3Util.getAmazonS3Client(s3Client).putObject(putObjectRequest);
        if (result != null) {
          return fileName;
        }

      } catch (Exception e) {
        log.error("Error uploading file on S3: ", e);
      }
    } else {
      log.warn("Content InputStream is null. Not Uploading on S3");
    }
    return null;
  }
}


@RestController
 public class TestController{


   @PostMapping(path = "upload/file", consumes = MediaType.MULTIPART_FORM_DATA_VALUE)
    public ResponseEntity<String> uploadStampPageImage( @RequestPart(value = "file") MultipartFile imageFile) {

        if(Objets.nonNull(file)){
          String uploadedFilePath = S3Utility.upload("myBucket","myFile.jpg",file.getInputStream(),file.getContentType(), amazonS3Client, true);
          return new ResponseEntity.ok(uploadedFilePath);
        }
        return new ResponseEntity.failure("Not uploaded");

    }

}

 }