Example usage for java.net HttpURLConnection connect

List of usage examples for java.net HttpURLConnection connect

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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:edu.stanford.muse.index.NER.java

public static List<Pair<String, Float>> namesFromArchive(String url, boolean removeCommonNames)
        throws ClassCastException, IOException, ClassNotFoundException {
    // only http conns allowed currently
    HttpURLConnection conn = (HttpURLConnection) new URL(url).openConnection();

    conn.setInstanceFollowRedirects(true);
    conn.setRequestProperty("User-agent",
            "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:6.0.2) Gecko/20100101 Firefox/6.0.2");
    conn.connect();

    byte[] b = Util.getBytesFromStream(conn.getInputStream());
    String text = new String(b, "UTF-8");
    text = Util.unescapeHTML(text);
    org.jsoup.nodes.Document doc = Jsoup.parse(text);
    text = doc.body().text();/*  w  w w .j  a  v a 2 s  .co  m*/
    return namesFromText(text, removeCommonNames);
}

From source file:de.schildbach.wallet.goldcoin.ExchangeRatesProvider.java

private static Map<String, ExchangeRate> getBitcoinCharts() {
    try {//  ww  w. java 2 s  .  co m
        // double btcRate = getGoldCoinValueBTC();     //NullPointerException???
        Double btcRate = 0.0;

        Object result = getGoldCoinValueBTC_ccex();

        if (result == null) {
            result = getCoinValueBTC_cryptopia();
            if (result == null)
                return null;
            else
                btcRate = (Double) result;
        }

        else
            btcRate = (Double) result;

        final URL URL = new URL("http://api.bitcoincharts.com/v1/weighted_prices.json");
        final HttpURLConnection connection = (HttpURLConnection) URL.openConnection();
        connection.setConnectTimeout(Constants.HTTP_TIMEOUT_MS);
        connection.setReadTimeout(Constants.HTTP_TIMEOUT_MS);
        connection.connect();

        if (connection.getResponseCode() != HttpURLConnection.HTTP_OK)
            return null;

        Reader reader = null;
        try {
            reader = new InputStreamReader(new BufferedInputStream(connection.getInputStream(), 1024));
            final StringBuilder content = new StringBuilder();
            IOUtils.copy(reader, content);

            final Map<String, ExchangeRate> rates = new TreeMap<String, ExchangeRate>();

            //Add Bitcoin information
            rates.put("BTC", new ExchangeRate("BTC",
                    Utils.toNanoCoins(String.format("%.8f", btcRate).replace(",", ".")), "pubapi.cryptsy.com"));

            final JSONObject head = new JSONObject(content.toString());
            for (final Iterator<String> i = head.keys(); i.hasNext();) {
                final String currencyCode = i.next();
                if (!"timestamp".equals(currencyCode)) {
                    final JSONObject o = head.getJSONObject(currencyCode);

                    String rate = o.optString("24h", null);
                    if (rate == null)
                        rate = o.optString("7d", null);
                    if (rate == null)
                        rate = o.optString("30d", null);

                    double rateForBTC = Double.parseDouble(rate);

                    rate = String.format("%.8f", rateForBTC * btcRate);

                    if (rate != null)
                        rates.put(currencyCode, new ExchangeRate(currencyCode,
                                Utils.toNanoCoins(rate.replace(",", ".")), URL.getHost()));
                }
            }

            return rates;
        } finally {
            if (reader != null)
                reader.close();
        }
    } catch (final IOException x) {
        // log.debug("problem reading exchange rates", x);
        x.printStackTrace();
    } catch (final JSONException x) {
        //log.debug("problem reading exchange rates", x);
        x.printStackTrace();
    }

    return null;
}

From source file:com.cannabiscoin.wallet.ExchangeRatesProvider.java

private static Object getCoinValueBTC() {
    Date date = new Date();
    long now = date.getTime();

    //final Map<String, ExchangeRate> rates = new TreeMap<String, ExchangeRate>();
    // Keep the LTC rate around for a bit
    Double btcRate = 0.0;/*from ww  w.  j ava 2 s .  c  o m*/
    String currencyCryptsy = CoinDefinition.cryptsyMarketCurrency;
    String urlCryptsy = "http://pubapi.cryptsy.com/api.php?method=singlemarketdata&marketid="
            + CoinDefinition.cryptsyMarketId;

    HttpURLConnection connectionCryptsy = null;
    try {
        // final String currencyCode = currencies[i];
        final URL URLCryptsy = new URL(urlCryptsy);
        connectionCryptsy = (HttpURLConnection) URLCryptsy.openConnection();
        connectionCryptsy.setConnectTimeout(Constants.HTTP_TIMEOUT_MS * 2);
        connectionCryptsy.setReadTimeout(Constants.HTTP_TIMEOUT_MS * 2);
        connectionCryptsy.connect();

        final StringBuilder contentCryptsy = new StringBuilder();

        Reader reader = null;
        try {
            reader = new InputStreamReader(new BufferedInputStream(connectionCryptsy.getInputStream(), 1024));
            Io.copy(reader, contentCryptsy);
            final JSONObject head = new JSONObject(contentCryptsy.toString());
            JSONObject returnObject = head.getJSONObject("return");
            JSONObject markets = returnObject.getJSONObject("markets");
            JSONObject coinInfo = markets.getJSONObject(CoinDefinition.coinTicker);

            JSONArray recenttrades = coinInfo.getJSONArray("recenttrades");

            double btcTraded = 0.0;
            double coinTraded = 0.0;

            for (int i = 0; i < recenttrades.length(); ++i) {
                JSONObject trade = (JSONObject) recenttrades.get(i);

                btcTraded += trade.getDouble("total");
                coinTraded += trade.getDouble("quantity");

            }

            Double averageTrade = btcTraded / coinTraded;

            //Double lastTrade = GLD.getDouble("lasttradeprice");

            //String euros = String.format("%.7f", averageTrade);
            // Fix things like 3,1250
            //euros = euros.replace(",", ".");
            //rates.put(currencyCryptsy, new ExchangeRate(currencyCryptsy, Utils.toNanoCoins(euros), URLCryptsy.getHost()));
            if (currencyCryptsy.equalsIgnoreCase("BTC"))
                btcRate = averageTrade;

        } finally {
            if (reader != null) {
                try {
                    reader.close();
                } catch (final IOException x) {
                    // swallow
                }
            }
        }
        return btcRate;
    } catch (final IOException x) {
        x.printStackTrace();
    } catch (final JSONException x) {
        x.printStackTrace();
    } finally {
        if (connectionCryptsy != null)
            connectionCryptsy.disconnect();
    }

    return null;
}

From source file:de.schildbach.wallet.goldcoin.ExchangeRatesProvider.java

private static Object getCoinValueBTC_cryptopia() {
    //final Map<String, ExchangeRate> rates = new TreeMap<String, ExchangeRate>();
    // Keep the LTC rate around for a bit
    Double btcRate = 0.0;//from   w  ww.ja v  a 2s  .  com
    String currency = "BTC";
    String url = "https://www.cryptopia.co.nz/api/GetMarket/2623";

    try {
        // final String currencyCode = currencies[i];
        final URL URL_bter = new URL(url);
        final HttpURLConnection connection = (HttpURLConnection) URL_bter.openConnection();
        connection.setConnectTimeout(Constants.HTTP_TIMEOUT_MS * 2);
        connection.setReadTimeout(Constants.HTTP_TIMEOUT_MS * 2);
        connection.connect();

        final StringBuilder content = new StringBuilder();

        Reader reader = null;
        try {
            reader = new InputStreamReader(new BufferedInputStream(connection.getInputStream(), 1024));
            IOUtils.copy(reader, content);
            final JSONObject head = new JSONObject(content.toString());

            /*{
               "Success":true,
                  "Message":null,
                  "Data":{
             "TradePairId":100,
             "Label":"LTC/BTC",
             "AskPrice":0.00006000,
             "BidPrice":0.02000000,
             "Low":0.00006000,
             "High":0.00006000,
             "Volume":1000.05639978,
             "LastPrice":0.00006000,
             "LastVolume":499.99640000,
             "BuyVolume":67003436.37658233,
             "SellVolume":67003436.37658233,
             "Change":-400.00000000
                  }
            }*/
            String result = head.getString("Success");
            if (result.equals("true")) {
                JSONObject dataObject = head.getJSONObject("Data");

                Double averageTrade = Double.valueOf(0.0);
                if (dataObject.get("Label").equals("GLD/BTC"))
                    averageTrade = dataObject.getDouble("LastPrice");

                if (currency.equalsIgnoreCase("BTC"))
                    btcRate = averageTrade;
            }
            return btcRate;
        } finally {
            if (reader != null)
                reader.close();
        }

    } catch (final IOException x) {
        x.printStackTrace();
    } catch (final JSONException x) {
        x.printStackTrace();
    }

    return null;
}

From source file:info.icefilms.icestream.browse.Location.java

private static Bitmap DownloadImage(URL url, Callback callback) {
    try {// w  w  w.j a  v  a  2s. com
        // Open the connection
        HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
        urlConnection.setRequestProperty("User-Agent",
                "Mozilla/5.0 (X11; Linux i686; rv:2.0) Gecko/20100101 Firefox/4.0");
        urlConnection.setConnectTimeout(callback.GetConnectionTimeout());
        urlConnection.setReadTimeout(callback.GetConnectionTimeout());
        urlConnection.connect();

        // Get the input stream
        InputStream inputStream = urlConnection.getInputStream();

        // For some reason we can actually get a null InputStream instead of an exception
        if (inputStream == null) {
            Log.e("Ice Stream", "Image download failed. Unable to create Input Stream.");
            if (callback.GetErrorBoolean() == false) {
                callback.SetErrorBoolean(true);
                callback.SetErrorStringID(R.string.browse_image_download_error);
            }
            urlConnection.disconnect();
            return null;
        }

        // Download the image and create the bitmap
        Bitmap bitmap = BitmapFactory.decodeStream(inputStream);

        // Close the connection
        inputStream.close();
        urlConnection.disconnect();

        // Check for errors
        if (bitmap == null) {
            Log.e("Ice Stream", "Image data decoding failed.");
            if (callback.GetErrorBoolean() == false) {
                callback.SetErrorBoolean(true);
                callback.SetErrorStringID(R.string.browse_image_decode_error);
            }
            return null;
        }

        return bitmap;
    } catch (SocketTimeoutException exception) {
        Log.e("Ice Stream", "Image download failed.", exception);
        if (callback.GetErrorBoolean() == false) {
            callback.SetErrorBoolean(true);
            callback.SetErrorStringID(R.string.browse_image_timeout_error);
        }
        return null;
    } catch (IOException exception) {
        Log.e("Ice Stream", "Image download failed.", exception);
        if (callback.GetErrorBoolean() == false) {
            callback.SetErrorBoolean(true);
            callback.SetErrorStringID(R.string.browse_image_download_error);
        }
        return null;
    }
}

From source file:de.langerhans.wallet.ExchangeRatesProvider.java

private static Map<String, ExchangeRate> requestExchangeRates(final URL url, double dogeBtcConversion,
        final String userAgent, final String source, final String... fields) {
    final long start = System.currentTimeMillis();

    HttpURLConnection connection = null;
    Reader reader = null;//  w ww  .  j  a  v  a2s . c o  m

    try {
        connection = (HttpURLConnection) url.openConnection();

        connection.setInstanceFollowRedirects(false);
        connection.setConnectTimeout(Constants.HTTP_TIMEOUT_MS);
        connection.setReadTimeout(Constants.HTTP_TIMEOUT_MS);
        connection.addRequestProperty("User-Agent", userAgent);
        connection.addRequestProperty("Accept-Encoding", "gzip");
        connection.connect();

        final int responseCode = connection.getResponseCode();
        if (responseCode == HttpURLConnection.HTTP_OK) {
            final String contentEncoding = connection.getContentEncoding();

            InputStream is = new BufferedInputStream(connection.getInputStream(), 1024);
            if ("gzip".equalsIgnoreCase(contentEncoding))
                is = new GZIPInputStream(is);

            reader = new InputStreamReader(is, Charsets.UTF_8);
            final StringBuilder content = new StringBuilder();
            final long length = Io.copy(reader, content);

            final Map<String, ExchangeRate> rates = new TreeMap<String, ExchangeRate>();

            final JSONObject head = new JSONObject(content.toString());
            for (final Iterator<String> i = head.keys(); i.hasNext();) {
                final String currencyCode = i.next();
                if (!"timestamp".equals(currencyCode)) {
                    final JSONObject o = head.getJSONObject(currencyCode);

                    for (final String field : fields) {
                        final String rate = o.optString(field, null);

                        if (rate != null) {
                            try {
                                final double btcRate = Double
                                        .parseDouble(Fiat.parseFiat(currencyCode, rate).toPlainString());
                                DecimalFormat df = new DecimalFormat("#.########");
                                df.setRoundingMode(RoundingMode.HALF_UP);
                                DecimalFormatSymbols dfs = new DecimalFormatSymbols();
                                dfs.setDecimalSeparator('.');
                                dfs.setGroupingSeparator(',');
                                df.setDecimalFormatSymbols(dfs);
                                final Fiat dogeRate = Fiat.parseFiat(currencyCode,
                                        df.format(btcRate * dogeBtcConversion));

                                if (dogeRate.signum() > 0) {
                                    rates.put(currencyCode, new ExchangeRate(
                                            new com.dogecoin.dogecoinj.utils.ExchangeRate(dogeRate), source));
                                    break;
                                }
                            } catch (final NumberFormatException x) {
                                log.warn("problem fetching {} exchange rate from {} ({}): {}", currencyCode,
                                        url, contentEncoding, x.getMessage());
                            }
                        }
                    }
                }
            }

            log.info("fetched exchange rates from {} ({}), {} chars, took {} ms", url, contentEncoding, length,
                    System.currentTimeMillis() - start);

            return rates;
        } else {
            log.warn("http status {} when fetching exchange rates from {}", responseCode, url);
        }
    } catch (final Exception x) {
        log.warn("problem fetching exchange rates from " + url, x);
    } finally {
        if (reader != null) {
            try {
                reader.close();
            } catch (final IOException x) {
                // swallow
            }
        }

        if (connection != null)
            connection.disconnect();
    }

    return null;
}

From source file:com.orange.oidc.secproxy_service.HttpOpenidConnect.java

static String getHttpString(String url) {

    String result = null;/*w ww .j  a v a  2  s .c o m*/

    // build connection
    HttpURLConnection huc = getHUC(url);
    huc.setInstanceFollowRedirects(false);

    try {
        // try to establish connection 
        huc.connect();
        // get result
        int responseCode = huc.getResponseCode();
        Logd(TAG, "getHttpString response: " + responseCode);

        // if 200, read http body
        if (responseCode == 200) {
            InputStream is = huc.getInputStream();
            result = convertStreamToString(is);
            is.close();
        } else {
            // result = "response code: "+responseCode;
        }

        // close connection
        huc.disconnect();

    } catch (Exception e) {
        Log.e(TAG, "revokeSite FAILED");
        e.printStackTrace();
    }

    return result;
}

From source file:com.fota.Link.sdpApi.java

public static String getNcnInfo(String CTN) throws JDOMException {
    String resultStr = "";
    String logData = "";
    try {/*  w  w  w  . j  a  v a 2s.c  o m*/
        String endPointUrl = PropUtil.getPropValue("sdp.oif516.url");

        String strRequest = "<soapenv:Envelope xmlns:soapenv='http://schemas.xmlsoap.org/soap/envelope/' "
                + "xmlns:oas='http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd'"
                + " xmlns:sdp='http://kt.com/sdp'>" + "     <soapenv:Header>" + "         <oas:Security>"
                + "             <oas:UsernameToken>" + "                 <oas:Username>"
                + PropUtil.getPropValue("sdp.id") + "</oas:Username>" + "                 <oas:Password>"
                + PropUtil.getPropValue("sdp.pw") + "</oas:Password>" + "             </oas:UsernameToken>"
                + "         </oas:Security>" + "     </soapenv:Header>"

                + "     <soapenv:Body>" + "         <sdp:getBasicUserInfoAndMarketInfoRequest>"
                + "         <!--You may enterthe following 6 items in any order-->"
                + "             <sdp:CALL_CTN>" + CTN + "</sdp:CALL_CTN>"
                + "         </sdp:getBasicUserInfoAndMarketInfoRequest>\n" + "     </soapenv:Body>\n"
                + "</soapenv:Envelope>";

        logData = "\r\n---------- Get Ncn Req Info start ----------\r\n";
        logData += " get Ncn Req Info - endPointUrl : " + endPointUrl;
        logData += "\r\n get Ncn Req Info - Content-type : text/xml;charset=utf-8";
        logData += "\r\n get Ncn Req Info - RequestMethod : POST";
        logData += "\r\n get Ncn Req Info - xml : " + strRequest;
        logData += "\r\n---------- Get Ncn Req Info end ----------";

        logger.info(logData);

        // connection
        URL url = new URL(endPointUrl);
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        connection.setRequestProperty("Content-type", "text/xml;charset=utf-8");
        connection.setRequestMethod("POST");
        connection.setDoOutput(true);
        connection.setDoInput(true);
        connection.connect();

        // output
        OutputStream os = connection.getOutputStream();
        // os.write(strRequest.getBytes(), 0, strRequest.length());
        os.write(strRequest.getBytes("utf-8"));
        os.flush();
        os.close();

        // input
        InputStream is = connection.getInputStream();
        BufferedReader br = new BufferedReader(new InputStreamReader(is, "utf-8"));
        String line = "";
        String resValue = "";
        String parseStr = "";
        while ((line = br.readLine()) != null) {
            System.out.println(line);
            parseStr = line;

        }

        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
        DocumentBuilder builder = factory.newDocumentBuilder();
        InputSource temp = new InputSource();
        temp.setCharacterStream(new StringReader(parseStr));
        Document doc = builder.parse(temp); //xml?

        NodeList list = doc.getElementsByTagName("*");

        int i = 0;
        Element element;
        String contents;

        String contractNum = "";
        String customerId = "";
        while (list.item(i) != null) {
            element = (Element) list.item(i);
            if (element.hasChildNodes()) {
                contents = element.getFirstChild().getNodeValue();
                System.out.println(element.getNodeName() + " / " + element.getFirstChild().getNodeName());

                if (element.getNodeName().equals("sdp:NS_CONTRACT_NUM")) {
                    //                  resultStr = element.getFirstChild().getNodeValue();
                    contractNum = element.getFirstChild().getNodeValue();
                }
                if (element.getNodeName().equals("sdp:NS_CUSTOMER_ID")) {
                    customerId = element.getFirstChild().getNodeValue();
                }

                //               System.out.println(" >>>>> " + contents);
            }
            i++;
        }

        //         System.out.println("contractNum : " + contractNum + " / cusomerId : " + customerId);

        resultStr = getNcnFromContractnumAndCustomerId(contractNum, customerId);
        //         System.out.println("ncn : " + resultStr);

        //resultStr = resValue;         
        //         resultStr = java.net.URLDecoder.decode(resultStr, "euc-kr");
        connection.disconnect();

    } catch (Exception e) {
        e.printStackTrace();
    }

    return resultStr;
}

From source file:WebReader.java

void getData(String address) throws Exception {
    setTitle(address);//from   ww w.  ja v  a  2  s . c o m
    URL page = new URL(address);
    StringBuffer text = new StringBuffer();
    HttpURLConnection conn = (HttpURLConnection) page.openConnection();
    conn.connect();
    InputStreamReader in = new InputStreamReader((InputStream) conn.getContent());
    BufferedReader buff = new BufferedReader(in);
    box.setText("Getting data ...");
    String line;
    do {
        line = buff.readLine();
        text.append(line + "\n");
    } while (line != null);
    box.setText(text.toString());
}

From source file:com.dopecoin.wallet.ExchangeRatesProvider.java

private static float requestDogeBtcConversion(int provider) {
    HttpURLConnection connection = null;
    Reader reader = null;//from   w ww  . j  a  v a  2 s . c o  m
    URL providerUrl;
    switch (provider) {
    case 0:
        providerUrl = DOPEPOOL_URL;
        break;
    case 1:
        providerUrl = VIRCUREX_URL;
        break;
    default:
        providerUrl = DOPEPOOL_URL;
        break;
    }

    try {
        connection = (HttpURLConnection) providerUrl.openConnection();
        connection.setConnectTimeout(Constants.HTTP_TIMEOUT_MS);
        connection.setReadTimeout(Constants.HTTP_TIMEOUT_MS);
        connection.connect();

        final int responseCode = connection.getResponseCode();
        if (responseCode == HttpURLConnection.HTTP_OK) {
            reader = new InputStreamReader(new BufferedInputStream(connection.getInputStream(), 1024),
                    Constants.UTF_8);
            final StringBuilder content = new StringBuilder();
            Io.copy(reader, content);

            try {
                float rate;
                switch (provider) {
                case 0:
                    /*rate = Float.parseFloat(
                        json.getJSONObject("return")
                            .getJSONObject("markets")
                            .getJSONObject("DOPE")
                            .getString("lasttradeprice"));*/ //For later use.
                    rate = Float.parseFloat(content.toString());
                    break;
                case 1:
                    final JSONObject json = new JSONObject(content.toString());
                    rate = Float.parseFloat(json.getString("value"));
                    break;
                default:
                    return -1;
                }
                return rate;
            } catch (NumberFormatException e) {
                log.debug("Couldn't get the current exchnage rate from provider " + String.valueOf(provider));
                return -1;
            }

        } else {
            log.debug("http status " + responseCode + " when fetching " + providerUrl);
        }
    } catch (final Exception x) {
        log.debug("problem reading exchange rates", x);
    } finally {
        if (reader != null) {
            try {
                reader.close();
            } catch (final IOException x) {
                // swallow
            }
        }

        if (connection != null)
            connection.disconnect();
    }

    return -1;
}