如何将带有“ -i --upload-file”的curl调用转换为Java Unirest或任何其他http请求？

Question

下面的示例使用cURL上传包含为二进制文件的图像文件。

curl -i --upload-file /path/to/image.png --header "Authorization: Token" 'https://url....'

它工作正常。我需要从我的Java应用程序发出此请求。

我尝试了下一个代码

URL image_url = Thread.currentThread().getContextClassLoader().getResource("jobs_image.jpg");
String path = image_url.getFile();
HttpResponse<String> response = Unirest.post(uploadUrl)
  .header("cache-control", "no-cache")
  .header("X-Restli-Protocol-Version", "2.0.0")
  .header("Authorization", "Bearer " + token + "")
  .field("file", new File(path))
  .asString();

但是，它返回状态400错误的请求。有什么方法可以从Java调用此类请求？

这是来自LinkedIn v2 API的请求：https
://docs.microsoft.com/zh-cn/linkedin/consumer/integrations/self-serv/share-on-
linkedin?context =
linkedin/consumer/context#upload- image
-二进制文件

Answer 1

下面的方法将图像上传到linkedIn

参考：https : //docs.microsoft.com/zh-
cn/linkedin/marketing/integrations/community-management/shares/vector-asset-
api#upload-the-image

private void uploadMedia(String uploadUrl,String accessToken) throws IOException {           
           RestTemplate restTemplate = new RestTemplate();
           HttpHeaders headers = new HttpHeaders();
           headers.add("Authorization","Bearer "+accessToken);
           byte[] fileContents = Files.readAllBytes(new 
           File("path_to_local_file").toPath());
           HttpEntity<byte[]> entity = new HttpEntity<>(fileContents, headers);
           restTemplate.exchange(uploadUrl,HttpMethod.PUT, entity, String.class);
      }