java - Spring AWS S3 : How to upload an image and get a URL which shows it rather than downloads it?

Question

所以我的问题是，当我打开上传文件的 URL 时，它会下载它。我做了一些研究，问题是我应该以某种方式向 S3 指定它是一个图像。目前这是处理上传的功能，但我不知道如何在那里设置类型。或者是否有识别图像的内置功能，当打开 URL 时它会自动显示它们而不是下载它们？

谢谢

public void writeResource(byte[] bytes, String fileName) throws IOException
{    
   Resource resource = this.resourceLoader.getResource("s3://bucket/" + fileName);
   WritableResource writableResource = (WritableResource) resource;
   try (OutputStream outputStream = writableResource.getOutputStream())
   {
      outputStream.write(bytes);
   }
}

Answer 1

 @Autowired
 private AmazonS3 amazonS3;    

 ObjectMetadata meta = new ObjectMetadata();
                       meta.setContentType(file.getContentType());
                       meta.setContentLength(file.getSize());
                       meta.setHeader("filename", fileName);

 ByteArrayInputStream bis = new ByteArrayInputStream(file.getBytes());

 TransferManager transferManager = new TransferManager(this.amazonS3);
                 transferManager.upload(bucket, filename, bis, meta);

我就是这样解决的。希望这对某人有帮助。 :)