/**
* @Declaration : - (NSURLSessionDownloadTask *)downloadTaskWithRequest:(NSURLRequest
* *)request @Description : Creates a download task for the specified URL request and saves the
* results to a file.
*
* @param request An NSURLRequest object that provides the URL, cache policy, request type, body
* data or body stream, and so on.
* @return Return Value The new session download task. @Discussion After you create the task, you
* must start it by calling its resume method.
*/
public DownloadTask downloadTaskWithRequest(NSURLRequest request) {
NSURL nsURL = request.URL();
URL url = nsURL.getUrl();
downloadTask = new DownloadTask(url);
downloadTasks.add(downloadTask);
return downloadTask;
}
/**
* @Declaration : - (NSURLSessionDownloadTask *)downloadTaskWithRequest:(NSURLRequest *)request
* completionHandler:(void (^)(NSURL *location, NSURLResponse *response, NSError
* *error))completionHandler @Description : Creates a download task for the specified URL request,
* saves the results to a file, and calls a handler upon completion.
*
* @param request An NSURLRequest object that provides the URL, cache policy, request type, body
* data or body stream, and so on.
* @param completionHandler The completion handler to call when the load request is complete. This
* handler is executed on the delegate queue. Unless you have provided a custom delegate, this
* parameter must not be nil, because there is no other way to retrieve the response data.
* @return Return Value The new session download task. @Discussion After you create the task, you
* must start it by calling its resume method.
*/
public DownloadTask downloadTaskWithRequestCompletionHandler(
NSURLRequest request, PerformBlock.VoidBlockNSURLNSURLResponseNSError completionHandler) {
NSURL nsURL = request.URL();
URL url = nsURL.getUrl();
downloadTask = new DownloadTask(url);
downloadTasks.add(downloadTask);
return downloadTask;
}
public void uploadFile() throws IOException {
String fileName = url.path().toString();
DataOutputStream dos = null;
String lineEnd = "\r\n";
String twoHyphens = "--";
String boundary = "*****";
int bytesRead, bytesAvailable, bufferSize;
byte[] buffer;
int maxBufferSize = 1 * 1024 * 1024;
FileInputStream fileInputStream = new FileInputStream(fileName);
// Open a HTTP connection to the URL
request = (HttpURLConnection) url.getUrl().openConnection();
request.setDoInput(true); // Allow Inputs
request.setDoOutput(true); // Allow Outputs
request.setUseCaches(false); // Don't use a Cached Copy
request.setChunkedStreamingMode(1024);
request.setRequestMethod("POST");
request.setRequestProperty("requestection", "Keep-Alive");
request.setRequestProperty("ENCTYPE", "multipart/form-data");
request.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + boundary);
request.setRequestProperty("uploaded_file", fileName);
dos = new DataOutputStream(request.getOutputStream());
dos.writeBytes(twoHyphens + boundary + lineEnd);
dos.writeBytes(
"Content-Disposition: form-data; name=\"file\";filename=\"" + fileName + "\"" + lineEnd);
dos.writeBytes(lineEnd);
// create a buffer of maximum size
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
buffer = new byte[bufferSize];
// read file and write it into form...
bytesRead = fileInputStream.read(buffer, 0, bufferSize);
while (bytesRead > 0) {
dos.write(buffer, 0, bufferSize);
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
bytesRead = fileInputStream.read(buffer, 0, bufferSize);
}
// send multipart form data necesssary after file data...
dos.writeBytes(lineEnd);
dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
// close the streams //
fileInputStream.close();
dos.flush();
dos.close();
}
