I am trying to uploading chunks of 256 KB in Google Drive using REST API v3. I can successfully get the upload ID but when I use this upload ID to upload a chunk, I get a 400 Bad Request instead of 308. I am posting the code below. The method getUploadID() initiates a resumable upload session and the method putFileWithUploadID() should upload a chunk of the file but there seems to be a problem in it. I have written the code according to the official guide.
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());
}
Basically, 400: Bad Request means that a required field or parameter has not been provided, the value supplied is invalid, or the combination of provided fields is invalid.
You may also check this related SO post which suggested to properly use the Android-specific API to do resumable upload. See creating files.