Develop Reference

HttpUrlConnection fetched different content from website content

i have tried to fetch the website content from android.
in .NET, it can be done by
WebRequest request = HttpWebRequest.Create(threeROllrl);
WebResponse response = request.GetResponse();
StreamReader vr = new StreamReader(response.GetResponseStream());
string result = vr.ReadToEnd();
however, in android, i tried to use
URL url = new URL(urlstr);
urlConnection = (HttpURLConnection) url.openConnection();
urlConnection.setReadTimeout(8000 /* milliseconds */);
urlConnection.setConnectTimeout(8000 /* milliseconds */);
urlConnection.setRequestMethod("GET");
urlConnection.connect();
BufferedReader reader = null;
reader = new BufferedReader(new InputStreamReader(urlConnection.getInputStream()));
StringBuilder stringBuilder = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null)
{
stringBuilder.append(line + "\n");
}
but it returned different content (in android httpurlconnection, no html content is fetched at all, but the metadata, style and scripts only), i wanna if it is because the response are the mobile version, i want to how retrieve the desktop content of the website in the android httpurlconnection.
after checked, i have found that the android httpurlconnection is actually fetching the header of the website and some bottom content, but it cannot fetch middle body. or it is stopped for some unknown reason (but no error is found).
thanks

Change the User-agent header in your http request to be as a desktop
here is a list of user agent that you can use

How to create a new content in Google Sites by sending a POST request using Android or Curl?

Currently, I am working on creating a Android app to read and create google sites content. It seems like the java api doesn't work for Android, so I use google protocol
https://developers.google.com/google-apps/sites/docs/1.0/developers_guide_protocol#ContentFeedPOST.
I can get all the content on google site by this GET request
https://sites.google.com/feeds/site/domainName.
But I have no idea how to send a POST request to create a content beside on the google api guide.
Hope anyone could help me with this. All I need is how to send the request in curl.
Thanks!

you can try curl command like this:
curl -H "Content-Type: your-content-type" -X POST -d 'your-data' https://localhost:8080/api/login
And to post data using HttpUrlConnection class use following:
HttpURLConnection connection = null;
try {
//Create connection
url = new URL(targetURL);
connection = (HttpURLConnection)url.openConnection();
connection.setRequestMethod("POST");
connection.setRequestProperty("Content-Type",
"your-content-type");//set required content type
connection.setRequestProperty("Content-Length", "" +
data.getBytes().length);//set Content-Length header using your data length in bytes
connection.setRequestProperty("Content-Language", "en-US");
connection.setDoInput(true);
connection.setDoOutput(true);
//Send request
DataOutputStream wr = new DataOutputStream (
connection.getOutputStream ());
wr.writeBytes (data);//write data to o/p stream
wr.flush ();
wr.close ();
//Get Response
InputStream is = connection.getInputStream();
BufferedReader rd = new BufferedReader(new InputStreamReader(is));
String line;
StringBuffer response = new StringBuffer();
while((line = rd.readLine()) != null) {
response.append(line);
response.append('\r');
}
rd.close();
return response.toString();
} catch (Exception e) {
} finally {
if(connection != null) {
connection.disconnect();
}
}

Not able to POST to REST API

Today I'm making my first attempt of sending a POST request with a JSON to save some data, and I'm not being able to do so.
My app works by signing in, and then save, modify and delete data. It's already done in iOS, but since I'm new to Android, I'm not sure how to do it.
Here's my POST function:
public String POST(String targetURL, String urlParameters, String user, String pwd) {
URL url;
String u = targetURL;
HttpURLConnection connection = null;
try {
// Create connection
// u=URLEncoder.encode(u, "UTF-8");
url = new URL(u);
connection = (HttpURLConnection) url.openConnection();
// cambiarlo luego al usuario q esta logeado
String login = user + ":" + pwd;
String encoding = new String(org.apache.commons.codec.binary.Base64.encodeBase64(org.apache.commons.codec.binary.StringUtils.getBytesUtf8(login)));
connection.setRequestMethod("POST");
connection.setRequestProperty("Authorization", "Basic " + encoding);
connection.setRequestProperty("Content-Type", "plain/text");// hace q sirva con el string de json
connection.setRequestProperty("Content-Length", "" + Integer.toString(urlParameters.getBytes().length));
connection.setRequestProperty("Content-Language", "en-US");
connection.setUseCaches(false);
connection.setDoInput(true);
connection.setDoOutput(true);
connection.setReadTimeout(120000);
// Send request
DataOutputStream wr = new DataOutputStream(connection.getOutputStream());
wr.writeBytes(urlParameters);
wr.flush();
wr.close();
// Get Response
InputStream is = connection.getInputStream();
BufferedReader rd = new BufferedReader(new InputStreamReader(is));
String line;
StringBuffer response = new StringBuffer();
this.setResponseCode(connection.getResponseCode());
while ((line = rd.readLine()) != null) {
response.append(line);
response.append('\r');
}
rd.close();
return response.toString();
} catch (Exception e) {
e.printStackTrace();
return null;
} finally {
if (connection != null) {
connection.disconnect();
}
}
}
The method above is executed with Asynctask, and even if I use it to Login using Spring security, it works, and even I can save for internal usage the username, password, and secret token.
I dunno if I need to put the token in a header or something, because I already did that, with no positive results.
I'm supposing that the only permission I need to execute this is the internet one, so in my manifest file I specified that permission.
I'm going crazy with this issue, please help!
Thanks in advance.
EDIT:
Sorry guys, I'm kinda new to this way of asking, and also, not an English native speaker :P
The output I receive after sending the request, is the HTML of the page that handles logging in into the web app... I need like a json response or something like that to make sure the request was saved correctly

Try handling your cookies
CookieManager cookieManager = new CookieManager();
CookieHandler.setDefault(cookieManager);
This should be a singleton.

POST function for REST service returns empty response

I'm trying to do a post method for a REST service, but I'm not getting any response from server:
public JSONObject postValues (String strUrl, String strJsonArray) throws Exception{
JSONObject jsonObject = null;
URL url = new URL(strUrl);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setReadTimeout(10000);
conn.setConnectTimeout(15000);
conn.setDoOutput(true);
conn.setDoInput(true);
conn.setRequestMethod("POST");
conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
strJsonArray = "data=" + strJsonArray;
Log.e("result",""+strJsonArray);
OutputStream os = conn.getOutputStream();
os.write(strJsonArray.getBytes());
os.flush();
conn.connect();
if (conn.getResponseCode() != 200) {
throw new RuntimeException("Failed : HTTP error code : "
+ conn.getResponseCode());
}
BufferedReader br = new BufferedReader(new InputStreamReader(
(conn.getInputStream())));
String output;
StringBuilder sb = new StringBuilder();
System.out.println("Output from Server .... \n");
while ((output = br.readLine()) != null) {
Log.e("output",output);
sb.append(output);
}
Log.e("output",sb.toString());
jsonObject = new JSONObject(sb.toString());
conn.disconnect();
return jsonObject;
}
When I see my logCat a get:
output {}
I know that the server is working right because I'm using the "advanced REST client" plugin of google chrome. If I call the URL manually (using the plugin of course)I get the desired answer:
{"message":"OK","code":200}
But if I try to use my function, my strJsonArray is inserted but I get an empty respond from server.
Is there anything wrong with my code?.

Everything looks good...
You could use Wireshark to capture the packets sent to and received from the server using an emulator and the chrome rest client. Then you can compare them and maybe find out what's wrong.
You could also check if theres something in the error stream (conn.getErrorStream()).

inoutstream from a website displays nothing

i used the following code to read line by line from a website using textview. But the problem is the textview displays nothing.
I would like to know where my mistake is or how to correct my code to read data from a website.
To Note: i use the emulator.
JAVA Code:
try {
URL url = new URL("http://www.google.com");
HttpsURLConnection con = (HttpsURLConnection) url.openConnection();
con.setDoOutput(true);
con.connect();
//readStream(con.getInputStream());
reader = new BufferedReader(new InputStreamReader (con.getInputStream()));
String line="";
while ( (line=reader.readLine()) != null)
tv00.setText(line);
} catch (Exception e) {
e.printStackTrace();
}
}