android HTTP发送及MD5加密收集

发送部分：

public void MyFunction{
HttpClient httpclient = new DefaultHttpClient();
//你的URL
  HttpPost httppost = new HttpPost("http://www.eoeandroid.com/post_datas.php"); 

  try {
   List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
//Your DATA
   nameValuePairs.add(new BasicNameValuePair("id", ""));
   nameValuePairs.add(new BasicNameValuePair("stringdata", "eoeAndroid.com is Cool!")); 

   httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs)); 

   HttpResponse response;
   response=httpclient.execute(httppost);
  } catch (ClientProtocolException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  } catch (IOException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
}

MD5加密部分：

public static String md5(String string) {
    byte[] hash;
    try {
        hash = MessageDigest.getInstance("MD5").digest(string.getBytes("UTF-8"));
    } catch (NoSuchAlgorithmException e) {
        throw new RuntimeException("Huh, MD5 should be supported?", e);
    } catch (UnsupportedEncodingException e) {
        throw new RuntimeException("Huh, UTF-8 should be supported?", e);
    }
    StringBuilder hex = new StringBuilder(hash.length * );
    for (byte b : hash) {
        if ((b & 0xFF) < 0x10) hex.append("");
        hex.append(Integer.toHexString(b & 0xFF));
    }
    return hex.toString();
}