How to send the value to server through http and get the response from server?

In below example the reasponse we are getting is written on sdcard file....For using below method the following jar files are required
httpmime-4.1.1.jar


String url = Constants.IP_ADDRESS+ "history.php?xml="+imei+"&dremail=" + email;
String filename = "history.txt";
String replaceUnderscore = url.replace(" ", "_");
//Call the method
httphit(replaceUnderscore, filename);

//Below is the httphit method


public int httphit(String http_url, String filepath) {
int result = 0;
BufferedReader bufferedReader = null;
try {
HttpClient httpclient = new DefaultHttpClient();
String UrlPost = http_url;// +IMEI_string;
HttpPost httppost = new HttpPost(UrlPost);
HttpResponse response = httpclient.execute(httppost);

if(filepath != "")
{
File file = new File("/sdcard/", filepath);
file.createNewFile();
FileOutputStream fileOutput = new FileOutputStream(file);
InputStream input = response.getEntity().getContent();
Log.e("Input MAP HTTPHIT",input.toString());
byte[] buffered = new byte[1024];
int bufferLength = 0;
while ((bufferLength = input.read(buffered)) > 0)
{
fileOutput.write(buffered, 0, bufferLength);
Log.e("Input MAP HTTPHIT While in",buffered.toString());
}
Log.e("Input MAP HTTPHIT While out",buffered.toString());
// close the output stream when done
fileOutput.flush();
fileOutput.close();
result = 1;
}

}
catch (IOException e) {
Log.e(e.getClass().getName(), e.getMessage());
}
return result;
}