使用Apache REST客戶端的多部分文件上傳

Question

我試圖使用多部分請求將文件上傳到OneDrive。我嘗試了很多方法，但都沒有工作。

請求的形式爲： -

POST /drive/items/{folder-id}/children 
Content-Type: multipart/related; boundary="A100x" 

--A100x 
Content-ID: <metadata> 
Content-Type: application/json 

{ 
    "name": "newfile.txt", 
    "file": {}, 
    "@content.sourceUrl": "cid:content", 
    "@name.conflictBehavior": "rename" 
} 

--A100x 
Content-ID: <content> 
Content-Type: text/plain 

Contents of the file to be uploaded. 

--A100x-- 

我已經嘗試過很多辦法。我爲此添加了以下代碼片斷。任何幫助，將不勝感激。

段： -

  HttpClient httpClient = HttpClientBuilder.create().build(); 
      URIBuilder uriBuilder = new URIBuilder(URI); 
      HttpPost post = new HttpPost(uriBuilder.build()); 
      MultipartEntityBuilder builder = MultipartEntityBuilder.create(); 
      builder.setMode(HttpMultipartMode.BROWSER_COMPATIBLE); 
      Charset chars = Charset.forName("utf-8"); 
      builder.setCharset(chars); 
      post.setEntity(builder.build()); 
      builder.addPart("content", new FileBody(new File("/home/myfiles/test"), ContentType.APPLICATION_OCTET_STREAM, "test")); 
      builder.addPart("metadata", new StringBody(metaJson, ContentType.APPLICATION_JSON)); 
      post.setHeader("Content-Type", "multipart/form-data"); 
      post.addHeader("Authorization", "Bearer " + ACCESS_TOKEN); 
      try { 
       HttpResponse response = httpClient.execute(post); 
       if (response.getStatusLine().getStatusCode() == 200) { 
        br = new BufferedReader(new InputStreamReader((response.getEntity().getContent()))); 
        responseBuilder = new StringBuilder(); 
        while ((output = br.readLine()) != null) { 
         responseBuilder.append(output); 
        } 
       } else { 
        System.out.println("Failed : HTTP error code : " + response.getStatusLine().getStatusCode()); 
       } 
      } catch (ClientProtocolException e) { 
       e.printStackTrace(); 
      } catch (IOException e) { 
       e.printStackTrace(); 
      } 

URI：

https://api.onedrive.com/v1.0/drive/root:/myfiles/children

Answer 1

後來我意識到，我可以用簡單的文件上傳提供我的文件是簡單的文檔文件。並使用Apache REST客戶端實現解決方案。

代碼片段： -

BufferedReader br = null; 
    String output; 
    StringBuilder responseBuilder = null; 
    HttpClient httpClient = HttpClientBuilder.create().build(); 
    URIBuilder uriBuilder = new URIBuilder(<UPLOAD_URL>); 
    HttpPut request = new HttpPut(uriBuilder.build()); 
    request.addHeader("Authorization", "Bearer " + oneDriveConnection.getAccessToken()); 
    request.addHeader("Content-Type", mimeType); 
    HttpEntity entity = new ByteArrayEntity(bytes); 
    request.setEntity(entity); 
    HttpResponse response = httpClient.execute(request); 
    int responseCode = response.getStatusLine().getStatusCode(); 
    if (responseCode == 201 || responseCode == 200) { 
     br = new BufferedReader(new InputStreamReader((response.getEntity().getContent()))); 
     responseBuilder = new StringBuilder(); 
     while ((output = br.readLine()) != null) { 
      responseBuilder.append(output); 
     } 
    } else { 
     logger.error("Failed : HTTP error code : " + response.getStatusLine().getStatusCode()); 
     throw new UploadException("Upload failure, Status code : " + response.getStatusLine().getStatusCode()); 
    }