[英]Android: HttpUrlConnection uses POST to send request bodys (instead of GET)
[英]android HttpUrlConnection send post and params get request
我需要从Android应用程序发送HttpUrlConnection
帮助。 直到现在,我仍使用基本的Http Client
进行此操作。 但是问题是,当我从服务器收到大量流时,应用程序崩溃并发生outofmemory
异常。 这就是为什么我进行研究后发现HttpUrlConnection
使我可以将流分成几部分的原因。 因此,有人可以帮我发送参数并从服务器获得响应吗?
我以前使用的代码是这样的:
httpclient = new DefaultHttpClient();
httppost = new HttpPost("http://www.rpc.your_nightmare.com");
TelephonyManager tm = (TelephonyManager) getSystemService(TELEPHONY_SERVICE);
String deviceId = tm.getDeviceId();
String resolution = Integer.toString(getWindow().getWindowManager().getDefaultDisplay().getWidth())+ "x" +
Integer.toString(getWindow().getWindowManager().getDefaultDisplay().getHeight());
String version = "Android " + Build.VERSION.RELEASE;
String locale = getResources().getConfiguration().locale.toString();
String clientApiVersion = null;
PackageManager pm = this.getPackageManager();
PackageInfo packageInfo = pm.getPackageInfo(this.getPackageName(), 0);
clientApiVersion = packageInfo.versionName;
hash = getAuthHash();
String timestampSQL = "SELECT dbTimestamp FROM users";
Cursor cursor = systemDbHelper.executeSQLQuery(timestampSQL);
if(cursor.getCount()==0){
Log.i("Cursor","TimeStamp Cursor Empty!");
} else if(cursor.getCount()>0){
cursor.moveToFirst();
timeStamp = cursor.getString(cursor.getColumnIndex("dbTimestamp"));
}
TelephonyManager tMgr =(TelephonyManager)this.getSystemService(Context.TELEPHONY_SERVICE);
phoneNumber = tMgr.getLine1Number();
Log.i("Phone","Phone Number : "+phoneNumber);
postParameters = new ArrayList<NameValuePair>();
postParameters.add(new BasicNameValuePair("debug_data","1"));
postParameters.add(new BasicNameValuePair("client_auth_hash", hash));
postParameters.add(new BasicNameValuePair("timestamp", timeStamp));
postParameters.add(new BasicNameValuePair("mobile_phone", phoneNumber));
postParameters.add(new BasicNameValuePair("deactivate_collections",Integer.toString(index)));
postParameters.add(new BasicNameValuePair("client_api_ver", clientApiVersion));
postParameters.add(new BasicNameValuePair("set_locale", locale));
postParameters.add(new BasicNameValuePair("device_os_type", version));
postParameters.add(new BasicNameValuePair("device_sync_type", "14"));
postParameters.add(new BasicNameValuePair("device_identification_string", version));
postParameters.add(new BasicNameValuePair("device_identificator", deviceId));
postParameters.add(new BasicNameValuePair("device_resolution", resolution));
httppost.setEntity(new UrlEncodedFormEntity(postParameters));
HttpResponse response = httpclient.execute(httppost);
Log.w("Response ","Status line : "+ response.getStatusLine().toString());
HttpEntity entity = response.getEntity();
InputStream stream2 = entity.getContent();
int nRead;
byte[] data = new byte[8*1024];
while ((nRead = stream2.read(data, 0, data.length)) != -1) {
buffer.write(data, 0, nRead);
}
buffer.flush();
return buffer.toByteArray();
而不是像这样处理它:
InputStream stream = new ByteArrayInputStream(buffer, 0, temp.length);
Log.i("Temp","Temp : "+temp.length);
Log.i("index","index : "+index);
responseBody = convertStreamToString(stream);
Log.i("responseBody","responseBody : "+responseBody);
//calculations
这是使用HttpURLConnecion
建立与Web服务器的连接的方法:
System.setProperty("http.keepAlive", "false");
connection = (HttpURLConnection) new URL(url).openConnection();
connection.setDoOutput(true);
connection.setConnectTimeout(5000); // miliseconds
connection.setRequestMethod("POST");
connection.setRequestProperty("Connection", "Keep-Alive");
connection.setRequestProperty("Charset", charset);
connection.setRequestProperty("Content-Type",
"application/x-www-form-urlencoded;charset=" + charset);
OutputStream output = null;
try {
output = connection.getOutputStream();
output.write(query.getBytes(charset));
} catch (IOException e) {
e.printStackTrace();
} finally {
if (output != null)
try {
output.close();
} catch (IOException e) {
e.printStackTrace();
}
}
int status = ((HttpURLConnection) connection).getResponseCode();
Log.d("", "Status : " + status);
for (Entry<String, List<String>> header : connection
.getHeaderFields().entrySet()) {
Log.d("Headers",
"Headers : " + header.getKey() + "="
+ header.getValue());
}
InputStream response = new BufferedInputStream(
connection.getInputStream());
int bytesRead = -1;
byte[] buffer = new byte[30 * 1024];
while ((bytesRead = response.read(buffer)) > 0 && stopThread) {
byte[] buffer2 = new byte[bytesRead];
System.arraycopy(buffer, 0, buffer2, 0, bytesRead);
// buffer2 is you chunked response
}
connection.disconnect();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
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