Google Drive REST API可恢复的上传returnin 400错误的请求

Question

我试图使用REST API v3在Google Drive中上传256 KB的块。我可以成功获取上传ID，但是当我使用此上传ID上传一个块时，我得到了400错误请求，而不是308。我在下面发布代码。方法getUploadID（）启动一个可恢复的上传会话，putFileWithUploadID（）方法应该上传一个文件块，但似乎存在问题。我已经根据官方guide编写了代码。

String mUploadID; 
private String getUploadID(Uri fileUri, String token) { 
    String upload_id = ""; 
    java.io.File fileContent = new java.io.File(fileUri.getPath()); 
    String fileName = fileContent.getName(); 
    String mimeType = "audio/mpeg"; 
    try { 
     String url = "https://www.googleapis.com/upload/drive/v3/files?uploadType=resumable"; 
     URL obj = new URL(url); 
     HttpsURLConnection con = (HttpsURLConnection) obj.openConnection(); 
     con.setRequestMethod("POST"); 
     con.setDoInput(true); 
     con.setDoOutput(true); 
     con.setRequestProperty("Authorization", "Bearer " + token); 
     con.setRequestProperty("X-Upload-Content-Type", mimeType); 
     con.setRequestProperty("X-Upload-Content-Length", String.format(Locale.ENGLISH, "%d", fileContent.length())); 
     con.setRequestProperty("Content-Type", "application/json; charset=UTF-8"); 
     String body = "{\"name\": \"" + fileName + "\", \"parents\": [\"" + "0B7ypsm4HGZhCS3FXcldPZnFPNkE" + "\"]}"; 
     con.setRequestProperty("Content-Length", String.format(Locale.ENGLISH, "%d", body.getBytes().length)); 
     OutputStream outputStream = con.getOutputStream(); 
     outputStream.write(body.getBytes()); 
     outputStream.close(); 
     con.connect(); 
     String location = con.getHeaderField("Location"); 
     if (location.contains("upload_id")) { 
      String[] uploadParameters = location.split("upload_id"); 
      upload_id = uploadParameters[1].replace("=", ""); 
     } 
    } catch (Exception e) { 
     e.printStackTrace(); 
    } 
    return upload_id; 
} 

private void putFileWithUploadID(Uri fileUri, String token, long range) { 
    java.io.File fileContent = new java.io.File(fileUri.getPath()); 
    String fileName = fileContent.getName(); 
    String contentLength = String.valueOf(fileContent.length()); 
    String mimeType = "audio/mpeg"; 
    long totalBytesFromDataInputStream = 0; 
    long uploadedBytes = 0; 
    long chunkStart = 0; 
    long chunkSize = 262144; 
    do { 
     try { 
      String url = "https://www.googleapis.com/upload/drive/v3/files?uploadType=resumable&upload_id=" + mUploadID; 
      URL obj = new URL(url); 
      HttpsURLConnection con = (HttpsURLConnection) obj.openConnection(); 
      con.setRequestMethod("PUT"); 
      con.setDoOutput(true); 
      con.setConnectTimeout(10000); 
      con.setRequestProperty("Content-Type", mimeType); 
      uploadedBytes = chunkSize; 
      if (chunkStart + uploadedBytes > fileContent.length()) { 
       uploadedBytes = (int) fileContent.length() - chunkStart; 
      } 
      con.setRequestProperty("Content-Length", String.format(Locale.ENGLISH, "%d", uploadedBytes)); 
      con.setRequestProperty("Content-Range", "bytes " + chunkStart + "-" + (chunkStart + uploadedBytes - 1) + "/" + fileContent.length()); 
      byte[] buffer = new byte[(int) uploadedBytes]; 
      FileInputStream fileInputStream = new FileInputStream(fileContent); 
      fileInputStream.getChannel().position(chunkStart); 
      if (fileInputStream.read(buffer, 0, (int) uploadedBytes) == -1) { 
       break; 
      } 
      fileInputStream.close(); 
      OutputStream outputStream = con.getOutputStream(); 
      outputStream.write(buffer); 
      outputStream.close(); 
      con.connect(); 
      int responseCode = con.getResponseCode(); 
      String rangeHeader = con.getHeaderField("Range"); 
      if (rangeHeader!=null) { 
       chunkStart = Long.parseLong(rangeHeader.substring(rangeHeader.lastIndexOf("-") + 1, rangeHeader.length())) + 1; 
      } 
     } catch (Exception e) { 
      e.printStackTrace(); 
     } 
    } while ((chunkStart+chunkSize)<fileContent.length()); 
} 

Answer 1

基本上，400: Bad Request意味着尚未提供必需的字段或参数，提供的值是无效的，或者提供场的组合是无效的。

尝试向驱动器项添加重复的父项时可能会引发此错误。当试图添加一个可以在目录图中创建一个循环的父代时，它也会被抛出。

您也可以检查这个related SO post，它建议正确使用Android特定的API来执行可恢复的上传。见creating files。