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:com.jeffrodriguez.webtools.client.URLConnectionWebClientImpl.java

@Override
public byte[] get(String url, Map<String, List<String>> headers) throws IOException {
    logger.log(Level.INFO, "Getting byte[] from {0}", url);

    // Build and connect
    HttpURLConnection connection = buildConnection(url);
    applyHeaders(connection, headers);/*from   www.  j  a  va  2 s. co m*/
    connection.connect();

    // Check for errors
    checkForErrors(connection);

    // Get the result
    return disconnectAndReturn(connection, IOUtils.toByteArray(connection.getInputStream()));
}

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From source file:ch.lom.clemens.android.bibliography.data.JSONWebConnector.java

private String connect(String strURL) throws Exception {
    URL url = new URL(strURL);
    HttpURLConnection request = (HttpURLConnection) url.openConnection();
    m_consumer.sign(request);//ww w. j av a  2  s  .  co  m

    request.connect();

    if (request.getResponseCode() == 200) {

        String strResponse = "";
        InputStreamReader in = new InputStreamReader((InputStream) request.getContent());
        BufferedReader buff = new BufferedReader(in);

        for (String strLine = ""; strLine != null; strLine = buff.readLine()) {
            strResponse += strLine + "\n";
        }
        in.close();

        return strResponse;
    } else {
        throw new Exception(
                "Mendeley Server returned " + request.getResponseCode() + ": " + request.getResponseMessage());
    }

}

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From source file:edu.usf.cutr.opentripplanner.android.pois.Nominatim.java

public JSONArray requestPlaces(String paramName, String left, String top, String right, String bottom) {
    StringBuilder builder = new StringBuilder();

    String encodedParamName;//from www .  j ava2  s . c om
    String encodedParamLeft = "";
    String encodedParamTop = "";
    String encodedParamRight = "";
    String encodedParamBottom = "";
    try {
        encodedParamName = URLEncoder.encode(paramName, OTPApp.URL_ENCODING);
        if ((left != null) && (top != null) && (right != null) && (bottom != null)) {
            encodedParamLeft = URLEncoder.encode(left, OTPApp.URL_ENCODING);
            encodedParamTop = URLEncoder.encode(top, OTPApp.URL_ENCODING);
            encodedParamRight = URLEncoder.encode(right, OTPApp.URL_ENCODING);
            encodedParamBottom = URLEncoder.encode(bottom, OTPApp.URL_ENCODING);
        }
    } catch (UnsupportedEncodingException e1) {
        Log.e(OTPApp.TAG, "Error encoding Nominatim request");
        e1.printStackTrace();
        return null;
    }

    request += "&q=" + encodedParamName;
    if ((left != null) && (top != null) && (right != null) && (bottom != null)) {
        request += "&viewbox=" + encodedParamLeft + "," + encodedParamTop + "," + encodedParamRight + ","
                + encodedParamBottom;
        request += "&bounded=1";
    }

    request += "&key=" + mApiKey;

    Log.d(OTPApp.TAG, request);

    HttpURLConnection urlConnection = null;

    try {
        URL url = new URL(request);
        urlConnection = (HttpURLConnection) url.openConnection();
        urlConnection.setConnectTimeout(OTPApp.HTTP_CONNECTION_TIMEOUT);
        urlConnection.setReadTimeout(OTPApp.HTTP_SOCKET_TIMEOUT);
        urlConnection.connect();
        int status = urlConnection.getResponseCode();

        if (status == HttpURLConnection.HTTP_OK) {
            BufferedReader reader = new BufferedReader(new InputStreamReader(urlConnection.getInputStream()));
            String line;
            while ((line = reader.readLine()) != null) {
                builder.append(line);
            }
        } else {
            Log.e(OTPApp.TAG, "Error obtaining Nominatim response, status code: " + status);
        }
    } catch (IOException e) {
        e.printStackTrace();
        Log.e(OTPApp.TAG, "Error obtaining Nominatim response" + e.toString());
        return null;
    } finally {
        if (urlConnection != null) {
            urlConnection.disconnect();
        }
    }
    Log.d(OTPApp.TAG, builder.toString());

    JSONArray json = null;
    try {
        json = new JSONArray(builder.toString());
    } catch (JSONException e) {
        Log.e(OTPApp.TAG, "Error parsing Nominatim data " + e.toString());
    }

    return json;
}

---

From source file:com.tcs.geofenceplugin.GeofenceTransitionsIntentService.java

@Override
protected void onHandleIntent(Intent intent) {
    Log.d(TAG, "Handling intent");
    gcmid = intent.getStringExtra("gcmid");
    tokenid = intent.getStringExtra("tokenid");
    GeofencingEvent geofencingEvent = GeofencingEvent.fromIntent(intent);
    if (geofencingEvent.hasError()) {
        String errorMessage = GeofenceErrorMessages.getErrorString(this, geofencingEvent.getErrorCode());
        Log.d(TAG, errorMessage);/*w w  w .j a  v a  2s.c o  m*/
        return;
    }

    int geofenceTransition = geofencingEvent.getGeofenceTransition();

    if (geofenceTransition == Geofence.GEOFENCE_TRANSITION_ENTER
            || geofenceTransition == Geofence.GEOFENCE_TRANSITION_EXIT) {

        Log.d(TAG, "recieved");
        URL url;
        HttpURLConnection urlConnection = null;
        try {
            url = new URL("https://apphonics.tcs.com/geofence/Analytics?tokenid=" + tokenid);
            urlConnection = (HttpURLConnection) url.openConnection();
            urlConnection.setRequestMethod("GET");
            urlConnection.connect();
            int responseCode = urlConnection.getResponseCode();
            if (responseCode == 200) {
                Log.d(TAG, "Analytics data entered");
            }
        } catch (Exception e) {
            e.printStackTrace();
        }

        List<Geofence> triggeringGeofences = geofencingEvent.getTriggeringGeofences();

        getGeofenceTransitionDetails(this, geofenceTransition, triggeringGeofences);

    } else {
        Log.e(TAG, getString(R.string.geofence_transition_invalid_type, geofenceTransition));
    }

}

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From source file:com.baasbox.android.HttpUrlConnectionClient.java

@Override
public HttpResponse execute(HttpRequest request) throws BaasException {
    try {/*from  w  ww . j  a  v  a2 s . c  o m*/
        HttpURLConnection connection = openConnection(request.url);

        for (String name : request.headers.keySet()) {
            connection.addRequestProperty(name, request.headers.get(name));
        }
        setupConnectionForRequest(connection, request);
        connection.connect();

        int responseCode = -1;
        try {
            responseCode = connection.getResponseCode();
        } catch (IOException e) {
            responseCode = connection.getResponseCode();
        }
        Logger.info("Connection response received");
        if (responseCode == -1) {
            throw new IOException("Connection failed");
        }
        StatusLine line = new BasicStatusLine(new ProtocolVersion("HTTP", 1, 1), responseCode,
                connection.getResponseMessage());
        BasicHttpResponse response = new BasicHttpResponse(line);
        response.setEntity(asEntity(connection));
        for (Map.Entry<String, List<String>> header : connection.getHeaderFields().entrySet()) {
            if (header.getKey() != null) {
                Header h = new BasicHeader(header.getKey(), header.getValue().get(0));
                response.addHeader(h);
            }
        }
        return response;
    } catch (IOException e) {
        throw new BaasIOException(e);
    }
}

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From source file:com.epam.catgenome.manager.externaldb.HttpDataManager.java

private String getResultFromURL(final String location) throws ExternalDbUnavailableException {

    HttpURLConnection conn = null;
    try {/*from  w ww  . j  a  v a2  s  . c  o  m*/
        conn = createConnection(location);
        HttpURLConnection.setFollowRedirects(true);
        conn.setDoInput(true);
        conn.setRequestProperty(CONTENT_TYPE, APPLICATION_JSON);
        conn.connect();

        int status = conn.getResponseCode();

        while (true) {
            long wait = 0;
            String header = conn.getHeaderField(HTTP_HEADER_RETRY_AFTER);

            if (header != null) {
                wait = Integer.valueOf(header);
            }

            if (wait == 0) {
                break;
            }

            LOGGER.info(String.format(WAITING_FORMAT, wait));
            conn.disconnect();

            Thread.sleep(wait * MILLIS_IN_SECOND);

            conn = (HttpURLConnection) new URL(location).openConnection();
            conn.setDoInput(true);
            conn.connect();
            status = conn.getResponseCode();

        }
        return getHttpResult(status, location, conn);
    } catch (InterruptedException | IOException e) {
        throw new ExternalDbUnavailableException(String.format(EXCEPTION_MESSAGE, location), e);
    } finally {
        if (conn != null) {
            conn.disconnect();
        }

        resetProxy();
    }
}

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From source file:org.openmeetings.app.rss.LoadAtomRssFeed.java

public LinkedHashMap<String, LinkedHashMap<String, LinkedHashMap<String, Object>>> parseRssFeed(
        String urlEndPoint) {//  ww w  .j  a  v a 2s .  com
    try {
        LinkedHashMap<String, LinkedHashMap<String, LinkedHashMap<String, Object>>> lMap = new LinkedHashMap<String, LinkedHashMap<String, LinkedHashMap<String, Object>>>();

        URL url = new URL(urlEndPoint);

        HttpURLConnection conn = (HttpURLConnection) url.openConnection();

        conn.setDoOutput(true);
        conn.setDoInput(true);
        conn.setRequestProperty("user-agent",
                "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; .NET CLR 1.1.4322)");
        conn.setRequestProperty("Referer", "http://incubator.apache.org/openmeetings/");
        conn.connect();

        SAXReader reader = new SAXReader();
        Document document = reader.read(conn.getInputStream());

        Element root = document.getRootElement();
        int l = 0;

        for (@SuppressWarnings("unchecked")
        Iterator<Element> i = root.elementIterator(); i.hasNext();) {
            Element item = i.next();
            LinkedHashMap<String, LinkedHashMap<String, Object>> items = new LinkedHashMap<String, LinkedHashMap<String, Object>>();
            boolean isSubElement = false;

            for (@SuppressWarnings("unchecked")
            Iterator<Element> it2 = item.elementIterator(); it2.hasNext();) {
                Element subItem = it2.next();

                LinkedHashMap<String, Object> itemObj = new LinkedHashMap<String, Object>();

                itemObj.put("name", subItem.getName());
                itemObj.put("text", subItem.getText());

                LinkedHashMap<String, String> attributes = new LinkedHashMap<String, String>();

                for (@SuppressWarnings("unchecked")
                Iterator<Attribute> attr = subItem.attributeIterator(); attr.hasNext();) {
                    Attribute at = attr.next();
                    attributes.put(at.getName(), at.getText());
                }
                itemObj.put("attributes", attributes);

                // log.error(subItem.getName()+ ": " +subItem.getText());
                items.put(subItem.getName(), itemObj);
                isSubElement = true;
            }

            if (isSubElement) {
                l++;
                lMap.put("item" + l, items);
            }

        }

        return lMap;

    } catch (Exception err) {
        log.error("[parseRssFeed]", err);
    }
    return null;

}

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From source file:com.atinternet.tracker.TVTrackingPlugin.java

@Override
protected void execute(Tracker tracker) {
    this.tracker = tracker;
    try {/* www .  j av a 2  s.c  o m*/
        if (sessionIsExpired()) {
            setDirectCampaignToRemanent();

            URL url = new URL(tracker.TVTracking().getCampaignURL());
            HttpURLConnection connection = (HttpURLConnection) url.openConnection();
            connection.setReadTimeout(TIMEOUT);
            connection.setConnectTimeout(TIMEOUT);
            connection.setDoInput(true);
            connection.connect();
            response = getTvTrackingResponse(stringifyTvTResponse(connection), connection);
            connection.disconnect();
        } else {
            response = getTvTrackingResponse(
                    Tracker.getPreferences().getString(TrackerConfigurationKeys.DIRECT_CAMPAIGN_SAVED, null),
                    null);
        }
        Tool.executeCallback(tracker.getListener(), Tool.CallbackType.partner, "TV Tracking : " + response);
        Tracker.getPreferences().edit()
                .putLong(TrackerConfigurationKeys.LAST_TVT_EXECUTE_TIME, System.currentTimeMillis()).apply();
    } catch (Exception e) {
        e.printStackTrace();
    }
}

---

From source file:com.trk.aboutme.facebook.android.Util.java

/**
 * Connect to an HTTP URL and return the response as a string.
 *
 * Note that the HTTP method override is used on non-GET requests. (i.e.
 * requests are made as "POST" with method specified in the body).
 *
 * @param url - the resource to open: must be a welformed URL
 * @param method - the HTTP method to use ("GET", "POST", etc.)
 * @param params - the query parameter for the URL (e.g. access_token=foo)
 * @return the URL contents as a String/*www.  ja  v a  2s. c  o m*/
 * @throws MalformedURLException - if the URL format is invalid
 * @throws IOException - if a network problem occurs
 */
@Deprecated
public static String openUrl(String url, String method, Bundle params)
        throws MalformedURLException, IOException {
    // random string as boundary for multi-part http post
    String strBoundary = "3i2ndDfv2rTHiSisAbouNdArYfORhtTPEefj3q2f";
    String endLine = "\r\n";

    OutputStream os;

    if (method.equals("GET")) {
        url = url + "?" + encodeUrl(params);
    }
    Utility.logd("Facebook-Util", method + " URL: " + url);
    HttpURLConnection conn = (HttpURLConnection) new URL(url).openConnection();
    conn.setRequestProperty("User-Agent",
            System.getProperties().getProperty("http.agent") + " FacebookAndroidSDK");
    if (!method.equals("GET")) {
        Bundle dataparams = new Bundle();
        for (String key : params.keySet()) {
            Object parameter = params.get(key);
            if (parameter instanceof byte[]) {
                dataparams.putByteArray(key, (byte[]) parameter);
            }
        }

        // use method override
        if (!params.containsKey("method")) {
            params.putString("method", method);
        }

        if (params.containsKey("access_token")) {
            String decoded_token = URLDecoder.decode(params.getString("access_token"));
            params.putString("access_token", decoded_token);
        }

        conn.setRequestMethod("POST");
        conn.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + strBoundary);
        conn.setDoOutput(true);
        conn.setDoInput(true);
        conn.setRequestProperty("Connection", "Keep-Alive");
        conn.connect();
        os = new BufferedOutputStream(conn.getOutputStream());

        os.write(("--" + strBoundary + endLine).getBytes());
        os.write((encodePostBody(params, strBoundary)).getBytes());
        os.write((endLine + "--" + strBoundary + endLine).getBytes());

        if (!dataparams.isEmpty()) {

            for (String key : dataparams.keySet()) {
                os.write(("Content-Disposition: form-data; filename=\"" + key + "\"" + endLine).getBytes());
                os.write(("Content-Type: content/unknown" + endLine + endLine).getBytes());
                os.write(dataparams.getByteArray(key));
                os.write((endLine + "--" + strBoundary + endLine).getBytes());

            }
        }
        os.flush();
    }

    String response = "";
    try {
        response = read(conn.getInputStream());
    } catch (FileNotFoundException e) {
        // Error Stream contains JSON that we can parse to a FB error
        response = read(conn.getErrorStream());
    }
    return response;
}

---

From source file:edu.usf.cutr.opentripplanner.android.pois.GooglePlaces.java

public JSONObject requestPlaces(String paramLocation, String paramRadius, String paramName) {
    StringBuilder builder = new StringBuilder();

    String encodedParamLocation = "";
    String encodedParamRadius = "";
    String encodedParamName;/*from   w  ww . j  av a2s  . co  m*/
    try {
        if ((paramLocation != null) && (paramRadius != null)) {
            encodedParamLocation = URLEncoder.encode(paramLocation, OTPApp.URL_ENCODING);
            encodedParamRadius = URLEncoder.encode(paramRadius, OTPApp.URL_ENCODING);
        }
        encodedParamName = URLEncoder.encode(paramName, OTPApp.URL_ENCODING);
    } catch (UnsupportedEncodingException e1) {
        Log.e(OTPApp.TAG, "Error encoding Google Places request");
        e1.printStackTrace();
        return null;
    }

    if ((paramLocation != null) && (paramRadius != null)) {
        request += "location=" + encodedParamLocation;
        request += "&radius=" + encodedParamRadius;
        request += "&query=" + encodedParamName;
    } else {
        request += "query=" + encodedParamName;
    }
    request += "&sensor=false";
    request += "&key=" + getApiKey();

    Log.d(OTPApp.TAG, request);

    HttpURLConnection urlConnection = null;

    try {
        URL url = new URL(request);
        urlConnection = (HttpURLConnection) url.openConnection();
        urlConnection.setConnectTimeout(OTPApp.HTTP_CONNECTION_TIMEOUT);
        urlConnection.setReadTimeout(OTPApp.HTTP_SOCKET_TIMEOUT);
        urlConnection.connect();
        int status = urlConnection.getResponseCode();

        if (status == HttpURLConnection.HTTP_OK) {
            BufferedReader reader = new BufferedReader(new InputStreamReader(urlConnection.getInputStream()));
            String line;
            while ((line = reader.readLine()) != null) {
                builder.append(line);
            }
        } else {
            Log.e(OTPApp.TAG, "Error obtaining Google Places response, status code: \" + status");
        }
    } catch (IOException e) {
        Log.e(OTPApp.TAG, "Error obtaining Google Places response" + e.toString());
        e.printStackTrace();
        return null;
    } finally {
        if (urlConnection != null) {
            urlConnection.disconnect();
        }
    }
    Log.d(OTPApp.TAG, builder.toString());

    JSONObject json = null;
    try {
        json = new JSONObject(builder.toString());
    } catch (JSONException e) {
        Log.e(OTPApp.TAG, "Error parsing Google Places data " + e.toString());
    }

    return json;
}

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