Example usage for java.net HttpURLConnection connect

Introduction

In this page you can find the example usage for java.net HttpURLConnection connect.

Prototype

public abstract void connect() throws IOException;

Source Link

Document

Opens a communications link to the resource referenced by this URL, if such a connection has not already been established.

Usage

From source file:br.eb.ime.pfc.domain.GeoServerCommunication.java

private static void redirectStream(String urlName, HttpServletRequest request, HttpServletResponse response) {
    URL url = null;//  w  w  w.ja  v a 2 s. com
    try {
        url = new URL(urlName);
    } catch (MalformedURLException e) {
        //Internal error, the user will receive no data.
        sendError(HTTP_STATUS.BAD_REQUEST, response);
        return;
    }
    HttpURLConnection conn = null;
    try {
        conn = (HttpURLConnection) url.openConnection();
        conn.addRequestProperty("Authorization", "Basic " + BASE64_AUTHORIZATION);
        //conn.setRequestMethod("GET");
        //conn.setDoOutput(true);
        conn.connect();
    } catch (IOException e) {
        sendError(HTTP_STATUS.INTERNAL_ERROR, response);
        return;
    }

    try (InputStream is = conn.getInputStream(); OutputStream os = response.getOutputStream()) {
        response.setContentType(conn.getContentType());
        IOUtils.copy(is, os);
    } catch (IOException e) {
        request.getServletContext().log("IO");
        sendError(HTTP_STATUS.INTERNAL_ERROR, response);
        return;
    } finally { //Close connection to save resources
        conn.disconnect();
    }
}

---

From source file:controllers.base.Application.java

public static Result login(String redirectTo, boolean isGuest) {
    if (isGuest) {
        createWebSession();/*  w ww  .ja  v  a2s  .co  m*/
    } else {
        String token = request().body().asFormUrlEncoded().get("token")[0];
        String apiKey = Play.application().configuration().getString("rpx.apiKey");
        String data;
        String response = null;
        try {
            data = String.format("token=%s&apiKey=%s&format=json", URLEncoder.encode(token, "UTF-8"),
                    URLEncoder.encode(apiKey, "UTF-8"));
            URL url = new URL("https://rpxnow.com/api/v2/auth_info");
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            conn.setRequestMethod("POST");
            conn.setDoOutput(true);
            conn.connect();
            OutputStreamWriter osw = new OutputStreamWriter(conn.getOutputStream(), "UTF-8");
            osw.write(data);
            osw.close();
            response = IOUtils.toString(conn.getInputStream());
        } catch (IOException e) {
            throw new IllegalArgumentException(e);
        }

        JsonNode profile = Json.parse(response).path("profile");
        String identifier = profile.path("identifier").asText();

        WebUser user = WebUser.find.where().like("providerId", identifier).findUnique();

        if (user == null) {
            user = new WebUser().setProviderId(identifier).setProfile(Json.stringify(profile));
            user.save();
        }

        createWebSession(user);
    }

    return postLoginRedirect(redirectTo);
}

---

From source file:org.openbmap.soapclient.CheckServerTask.java

/**
 * Checks connection to openbmap.org//  ww w. j av  a2  s. c  o m
 * @return true on successful http connection
 */
private static boolean isOnline() {
    try {
        Log.v(TAG, "Ping " + Preferences.VERSION_CHECK_URL);
        final URL url = new URL(Preferences.VERSION_CHECK_URL);
        final HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        connection.setRequestProperty("Connection", "close");
        connection.setConnectTimeout(CONNECTION_TIMEOUT);
        connection.connect();
        if (connection.getResponseCode() == 200) {
            Log.i(TAG, String.format("Good: Server reply %s - device & server online",
                    connection.getResponseCode()));
            return true;
        } else {
            Log.w(TAG, String.format("Bad: Http ping failed (server reply %s).", connection.getResponseCode()));
        }
    } catch (final IOException e) {
        Log.w(TAG, "Bad: Http ping failed (no response)..");
    }
    return false;
}

---

From source file:org.LinuxdistroCommunity.android.client.NetworkUtilities.java

public static String getAuthToken(String server, String code) {

    String token = null;//w w  w  .  jav a  2 s. c  o  m

    final ArrayList<NameValuePair> params = new ArrayList<NameValuePair>();
    params.add(new BasicNameValuePair(PARAM_CODE, code));
    params.add(new BasicNameValuePair(PARAM_CLIENT_SECRET, CLIENT_SECRET));

    InputStream is = null;
    URL auth_token_url;
    try {
        auth_token_url = getRequestURL(server, PATH_OAUTH_ACCESS_TOKEN, params);
        Log.i(TAG, auth_token_url.toString());

        HttpURLConnection conn = (HttpURLConnection) auth_token_url.openConnection();
        conn.setReadTimeout(10000 /* milliseconds */);
        conn.setConnectTimeout(15000 /* milliseconds */);
        conn.setRequestMethod("GET");
        conn.setDoInput(true);
        // Starts the query
        conn.connect();
        int response_code = conn.getResponseCode();
        Log.d(TAG, "The response is: " + response_code);
        is = conn.getInputStream();

        // parse token_response as JSON to get the token out
        String str_response = readStreamToString(is, 500);
        Log.d(TAG, str_response);
        JSONObject response = new JSONObject(str_response);
        token = response.getString("access_token");

    } catch (MalformedURLException e1) {
        // TODO Auto-generated catch block
        e1.printStackTrace();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (JSONException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } finally {
        // Makes sure that the InputStream is closed after the app is
        // finished using it.
        if (is != null) {
            try {
                is.close();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
    }

    Log.i(TAG, token);
    return token;
}

---

From source file:com.example.android.didyoufeelit.Utils.java

/**
 * Make an HTTP request to the given URL and return a String as the response.
 *//*  w  w  w.  j av  a 2s .  co m*/
private static String makeHttpRequest(URL url) throws IOException {
    String jsonResponse = "";

    // If the URL is null, then return early.
    if (url == null) {
        return jsonResponse;
    }

    HttpURLConnection urlConnection = null;
    InputStream inputStream = null;
    try {
        urlConnection = (HttpURLConnection) url.openConnection();
        urlConnection.setReadTimeout(10000 /* milliseconds */);
        urlConnection.setConnectTimeout(15000 /* milliseconds */);
        urlConnection.setRequestMethod("GET");
        urlConnection.connect();

        // If the request was successful (response code 200),
        // then read the input stream and parse the response.
        if (urlConnection.getResponseCode() == 200) {
            inputStream = urlConnection.getInputStream();
            jsonResponse = readFromStream(inputStream);
        } else {
            Log.e(LOG_TAG, "Error response code: " + urlConnection.getResponseCode());
        }
    } catch (IOException e) {
        Log.e(LOG_TAG, "Problem retrieving the earthquake JSON results.", e);
    } finally {
        if (urlConnection != null) {
            urlConnection.disconnect();
        }
        if (inputStream != null) {
            inputStream.close();
        }
    }
    return jsonResponse;
}

---

From source file:com.samsung.msf.youtubeplayer.client.util.FeedParser.java

/**
 * Given a string representation of a URL, sets up a connection and gets an input stream.
 *///w  w w  .java2 s. c  om
public static InputStream downloadUrl(final URL url) throws IOException {
    HttpURLConnection conn = (HttpURLConnection) url.openConnection();
    conn.setReadTimeout(NET_READ_TIMEOUT_MILLIS /* milliseconds */);
    conn.setConnectTimeout(NET_CONNECT_TIMEOUT_MILLIS /* milliseconds */);
    conn.setRequestMethod("GET");
    conn.setDoInput(true);
    // Starts the query
    conn.connect();
    return conn.getInputStream();
}

---

From source file:com.hichinaschool.flashcards.anki.web.HttpFetcher.java

public static String downloadFileToSdCardMethod(String UrlToFile, Context context, String prefix,
        String method) {//  w  w w.  ja  v a2s .  co m
    try {
        URL url = new URL(UrlToFile);

        String extension = UrlToFile.substring(UrlToFile.length() - 4);

        HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
        urlConnection.setRequestMethod(method);
        urlConnection.setRequestProperty("Referer", "com.hichinaschool.flashcards.anki");
        urlConnection.setRequestProperty("User-Agent", "Mozilla/5.0 ( compatible ) ");
        urlConnection.setRequestProperty("Accept", "*/*");
        urlConnection.connect();

        File file = File.createTempFile(prefix, extension, DiskUtil.getStoringDirectory());

        FileOutputStream fileOutput = new FileOutputStream(file);
        InputStream inputStream = urlConnection.getInputStream();

        byte[] buffer = new byte[1024];
        int bufferLength = 0;

        while ((bufferLength = inputStream.read(buffer)) > 0) {
            fileOutput.write(buffer, 0, bufferLength);
        }
        fileOutput.close();

        return file.getAbsolutePath();

    } catch (Exception e) {
        return "FAILED " + e.getMessage();
    }
}

---

From source file:Main.java

public static String stringFromHttpPost(String urlStr, String body) {
    HttpURLConnection conn;
    try {//from   w  w w.  jav  a 2  s.c o m
        URL e = new URL(urlStr);
        conn = (HttpURLConnection) e.openConnection();
        conn.setDoOutput(true);
        conn.setDoInput(true);
        conn.setInstanceFollowRedirects(true);
        conn.setRequestMethod("POST");
        OutputStream os1 = conn.getOutputStream();
        DataOutputStream out1 = new DataOutputStream(os1);
        out1.write(body.getBytes("UTF-8"));
        out1.flush();
        conn.connect();
        String line;
        BufferedReader reader;
        StringBuffer sb = new StringBuffer();
        if ("gzip".equals(conn.getHeaderField("Content-Encoding"))) {
            reader = new BufferedReader(
                    new InputStreamReader(new GZIPInputStream(conn.getInputStream()), "UTF-8"));
        } else {
            reader = new BufferedReader(new InputStreamReader(conn.getInputStream(), "UTF-8"));
        }
        while ((line = reader.readLine()) != null) {
            sb.append(line);
        }
        return sb.toString();
    } catch (Exception e) {
        e.printStackTrace();
        logError(e.getMessage());
    }
    return null;
}

---

From source file:de.Keyle.MyPet.api.Util.java

public static String readUrlContent(String address, int timeout) throws IOException {
    StringBuilder contents = new StringBuilder(2048);
    BufferedReader br = null;/*  w w  w  .  j av  a2 s  . c  o m*/

    try {
        URL url = new URL(address);
        HttpURLConnection huc = (HttpURLConnection) url.openConnection();
        huc.setConnectTimeout(timeout);
        huc.setReadTimeout(timeout);
        huc.setRequestMethod("GET");
        huc.connect();
        br = new BufferedReader(new InputStreamReader(huc.getInputStream()));
        String line;
        while ((line = br.readLine()) != null) {
            contents.append(line);
        }
    } finally {
        try {
            if (br != null) {
                br.close();
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    return contents.toString();
}

---

From source file:com.dmsl.anyplace.utils.NetworkUtils.java

public static InputStream downloadHttp(String urlS) throws URISyntaxException, IOException {
    InputStream is = null;/*from   w  w w  .j a v  a2s  .c  o  m*/

    URL url = new URL(encodeURL(urlS));

    HttpURLConnection conn = (HttpURLConnection) url.openConnection();
    conn.setReadTimeout(10000);
    conn.setConnectTimeout(15000);
    conn.setRequestMethod("GET");
    conn.setDoInput(true);

    conn.connect();

    int response = conn.getResponseCode();
    if (response == 200) {
        is = conn.getInputStream();
    }

    return is;
}

---

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