6
के साथ बड़ी फ़ाइल वाली पोस्ट मल्टीपार्ट/फॉर्म-डेटा इसलिए मैं बड़ी छवि फ़ाइल के साथ एक मल्टीपार्ट/फॉर्म-डेटा पोस्ट अनुरोध भेजने की कोशिश कर रहा हूं। मैं बाइट सरणी में फ़ाइल को पूर्व-रूपांतरित नहीं कर सकता, मेरा ऐप आउटऑफमेमरी अपवाद के साथ क्रैश हो जाएगा, इसलिए मुझे सीधे फ़ाइल के सामग्रियों को कनेक्शन के आउटपुटस्ट्रीम पर लिखना होगा। साथ ही, मेरा सर्वर खंडित मोड का समर्थन नहीं करता है, इसलिए मुझे डेटा भेजने से पहले सामग्री की लंबाई की गणना करना है और कनेक्शन के सेटफिक्स्डलेथस्ट्रीमिंग मोड का उपयोग करना है।HTTPURL कनेक्शन - फिक्स्ड लम्बाईस्ट्रीमिंग मोड
public void createImagePostWithToken(String accessToken, String text,
String type, String imagePath) {
URL imageUrl = null;
String lineEnd = "\r\n";
String twoHyphens = "--";
// generating byte[] boundary here
HttpURLConnection conn = null;
DataOutputStream outputStream = null;
DataInputStream inputStream = null;
int bytesRead, bytesAvailable, bufferSize;
byte[] buffer;
int maxBufferSize = 1*1024*1024;
try
{
long contentLength;
int serverResponseCode;
String serverResponseMessage;
File file = new File(imagePath);
FileInputStream fileInputStream = new FileInputStream(file);
imageUrl = buildUri("posts").toURL();
conn = (HttpURLConnection)imageUrl.openConnection();
conn.setConnectTimeout(30000);
conn.setReadTimeout(30000);
conn.setDoOutput(true);
conn.setDoInput(true);
conn.setRequestMethod("POST");
conn.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + boundary);
String stringForLength = new String();
stringForLength += "Content-Type: multipart/form-data;boundary=" + boundary;
stringForLength += twoHyphens + boundary + lineEnd + "Content-Disposition: form-data; name=\"access_token\"" + lineEnd;
stringForLength += "Content-Type: text/plain;charset=UTF-8" + lineEnd + "Content-Length: " + accessToken.length() + lineEnd + lineEnd;
stringForLength += accessToken + lineEnd + twoHyphens + boundary + lineEnd;
stringForLength += "Content-Disposition: form-data; name=\"text\"" + lineEnd;
stringForLength += "Content-Type: text/plain;charset=UTF-8" + lineEnd + "Content-Length: " + text.length() + lineEnd + lineEnd;
stringForLength += text + lineEnd + twoHyphens + boundary + lineEnd;
stringForLength += "Content-Disposition: form-data; name=\"type\"" + lineEnd;
stringForLength += "Content-Type: text/plain;charset=UTF-8" + lineEnd + "Content-Length: " + type.length() + lineEnd + lineEnd;
stringForLength += type + lineEnd + twoHyphens + boundary + lineEnd;
stringForLength += twoHyphens + boundary + lineEnd + "Content-Disposition: form-data; name=\"image\"" + lineEnd;
stringForLength += "Content-Type: application/octet-stream" + lineEnd + "Content-Length: " + file.length() + lineEnd + lineEnd;
stringForLength += lineEnd + twoHyphens + boundary + twoHyphens + lineEnd;
int totalLength = stringForLength.length() + (int)file.length();
conn.setFixedLengthStreamingMode(totalLength);
outputStream = new DataOutputStream(conn.getOutputStream());
outputStream.writeBytes(twoHyphens + boundary + lineEnd);
// access token
outputStream.writeBytes("Content-Disposition: form-data; name=\"access_token\"" + lineEnd);
outputStream.writeBytes("Content-Type: text/plain;charset=UTF-8" + lineEnd);
outputStream.writeBytes("Content-Length: " + accessToken.length() + lineEnd);
outputStream.writeBytes(lineEnd);
outputStream.writeBytes(accessToken + lineEnd);
outputStream.writeBytes(twoHyphens + boundary + lineEnd);
// text
outputStream.writeBytes("Content-Disposition: form-data; name=\"text\"" + lineEnd);
outputStream.writeBytes("Content-Type: text/plain;charset=UTF-8" + lineEnd);
outputStream.writeBytes("Content-Length: " + text.length() + lineEnd);
outputStream.writeBytes(lineEnd);
outputStream.writeBytes(text + lineEnd);
outputStream.writeBytes(twoHyphens + boundary + lineEnd);
// type
outputStream.writeBytes("Content-Disposition: form-data; name=\"type\"" + lineEnd);
outputStream.writeBytes("Content-Type: text/plain;charset=UTF-8" + lineEnd);
outputStream.writeBytes("Content-Length: " + type.length() + lineEnd);
outputStream.writeBytes(lineEnd);
outputStream.writeBytes(type + lineEnd);
outputStream.writeBytes(twoHyphens + boundary + lineEnd);
// image
outputStream.writeBytes(twoHyphens + boundary + lineEnd);
outputStream.writeBytes("Content-Disposition: form-data; name=\"image\"" + lineEnd);
//outputStream.writeBytes(lineEnd);
outputStream.writeBytes("Content-Type: application/octet-stream" + lineEnd);
outputStream.writeBytes("Content-Length: " + file.length() + lineEnd);
outputStream.writeBytes(lineEnd);
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
buffer = new byte[bufferSize];
// Read file
bytesRead = fileInputStream.read(buffer, 0, bufferSize);
while (bytesRead > 0)
{
outputStream.write(buffer, 0, bufferSize);
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
bytesRead = fileInputStream.read(buffer, 0, bufferSize);
}
outputStream.writeBytes(lineEnd);
outputStream.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
Log.d("posttemplate", "connection outputstream size is " + outputStream.size());
// finished with POST request body
// Responses from the server (code and message)
serverResponseCode = conn.getResponseCode();
serverResponseMessage = conn.getResponseMessage();
Log.d("posttemplate", "server response code "+ serverResponseCode);
Log.d("posttemplate", "server response message "+ serverResponseMessage);
fileInputStream.close();
conn.disconnect();
outputStream.flush();
outputStream.close();
} catch (MalformedURLException e)
{
Log.d("posttemplate", "malformed url", e);
//TODO: catch exception;
} catch (IOException e)
{
Log.d("posttemplate", "ioexception", e);
//TODO: catch exception
}
}
दुर्भाग्य से, outputStream.close() पर IOException के साथ अपने ऐप्लिकेशन क्रैश, और मैं क्यों पता नहीं है:
03-16 13:56:51.035: D/posttemplate(6479): java.io.IOException: unexpected end of stream
03-16 13:56:51.035: D/posttemplate(6479): at org.apache.harmony.luni.internal.net.www.protocol.http.FixedLengthOutputStream.close(FixedLengthOutputStream.java:57)
03-16 13:56:51.035: D/posttemplate(6479): at java.io.FilterOutputStream.close(FilterOutputStream.java:66)
03-16 13:56:51.035: D/posttemplate(6479): at com.futubra.api.impl.PostTemplate.createImagePostWithToken(PostTemplate.java:282)
03-16 13:56:51.035: D/posttemplate(6479): at com.futubra.FutubraNewPostActivity.createPost(FutubraNewPostActivity.java:128)
03-16 13:56:51.035: D/posttemplate(6479): at com.futubra.FutubraNewPostActivity_.access$2(FutubraNewPostActivity_.java:1)
03-16 13:56:51.035: D/posttemplate(6479): at com.futubra.FutubraNewPostActivity_$5.run(FutubraNewPostActivity_.java:141)
03-16 13:56:51.035: D/posttemplate(6479): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1088)
03-16 13:56:51.035: D/posttemplate(6479): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:581)
03-16 13:56:51.035: D/posttemplate(6479): at java.lang.Thread.run(Thread.java:1019)
तुम मुझे इस बग है कि आप का उल्लेख को इंगित किया जा सका के रूप में स्ट्रिंग की बाइट लंबाई इस्तेमाल करना चाहिए? मैं जिंजरब्रेड पर HttpsUrlConnection का उपयोग कर एक ही मुद्दे में चल रहा प्रतीत होता है। – HungryTux