Example usage for java.net URLConnection connect

List of usage examples for java.net URLConnection connect

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Introduction

In this page you can find the example usage for java.net URLConnection 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:de.schildbach.wallet.goldcoin.ExchangeRatesProvider.java

private static Map<String, ExchangeRate> getLitecoinChartsOld() {
    final Map<String, ExchangeRate> rates = new TreeMap<String, ExchangeRate>();
    // Keep the BTC rate around for a bit
    Double ltcRate = getGoldCoinValueLTC();

    Double btcRate = 0.0;//  www  . ja  v  a 2  s.  co m
    try {
        String currencies[] = { "USD", "BTC" };//, "RUR"};
        String urls[] = { "https://btc-e.com/api/2/14/ticker", "https://btc-e.com/api/2/10/ticker",
                "https://btc-e.com/api/2/ltc_rur/ticker" };
        for (int i = 0; i < currencies.length; ++i) {
            final String currencyCode = currencies[i];
            final URL URL = new URL(urls[i]);
            final URLConnection connection = URL.openConnection();
            connection.setConnectTimeout(TIMEOUT_MS);
            connection.setReadTimeout(TIMEOUT_MS);
            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());
                JSONObject ticker = head.getJSONObject("ticker");
                Double avg = ticker.getDouble("avg") * ltcRate;
                String euros = String.format("%.7f", avg);
                // Fix things like 3,1250
                euros = euros.replace(",", ".");
                rates.put(currencyCode,
                        new ExchangeRate(currencyCode, Utils.toNanoCoins(euros), URL.getHost()));
                if (currencyCode.equalsIgnoreCase("BTC"))
                    btcRate = avg;
            } finally {
                if (reader != null)
                    reader.close();
            }
        }
        // Handle LTC/EUR special since we have to do maths
        final URL URL = new URL("https://btc-e.com/api/2/btc_eur/ticker");
        final URLConnection connection = URL.openConnection();
        connection.setConnectTimeout(TIMEOUT_MS);
        connection.setReadTimeout(TIMEOUT_MS);
        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());
            JSONObject ticker = head.getJSONObject("ticker");
            Double avg = ticker.getDouble("avg");
            // This is bitcoins priced in euros.  We want GLD!
            avg *= btcRate;
            String s_avg = String.format("%.8f", avg).replace(',', '.');
            rates.put("EUR", new ExchangeRate("EUR", Utils.toNanoCoins(s_avg), URL.getHost()));

            //Add LTC information
            s_avg = String.format("%.8f", ltcRate);
            rates.put("LTC",
                    new ExchangeRate("LTC", Utils.toNanoCoins(s_avg.replace(",", ".")), URL.getHost()));
        } finally {
            if (reader != null)
                reader.close();
        }
        return rates;
    } catch (final IOException x) {
        x.printStackTrace();
    } catch (final JSONException x) {
        x.printStackTrace();
    }

    return null;
}

From source file:org.asimba.util.saml2.metadata.provider.MetadataProviderUtil.java

/**
 * Create a new HTTP Metadata Provider from the provided URL and HTTP settings<br/>
 * An exception is thrown when the provider could not be initiated.
 * //  w w  w. j  a  v a 2 s.  co  m
 * @param sMetadataURL
 * @param sMetadataTimeout
 * @param oParserPool
 * @param oMPM
 * @return
 * @throws OAException
 */
public static MetadataProvider newHTTPMetadataProvider(String sId, String sMetadataURL, int iTimeout,
        ParserPool oParserPool, IMetadataProviderManager oMPM) throws OAException {
    MetadataProvider oProvider = null;

    // Check URL format
    URL oURLTarget = null;
    try {
        oURLTarget = new URL(sMetadataURL);
    } catch (MalformedURLException e) {
        _oLogger.error("Invalid url for metadata: " + sMetadataURL, e);
        throw new OAException(SystemErrors.ERROR_INTERNAL);
    }

    // Check valid and existing destination (with configured timeout settings)
    try {
        URLConnection oURLConnection = oURLTarget.openConnection();
        if (iTimeout <= 0) {
            oURLConnection.setConnectTimeout(3000);
            oURLConnection.setReadTimeout(3000);
        } else {
            oURLConnection.setConnectTimeout(iTimeout);
            oURLConnection.setReadTimeout(iTimeout);
        }

        oURLConnection.connect();
    } catch (IOException e) {
        _oLogger.warn("Could not connect to metadata url: " + sMetadataURL + "(using timout "
                + (iTimeout == 0 ? "3000" : iTimeout) + "ms)", e);
    }

    // Establish dedicated refresh timer:
    String sTimername = "Metadata_HTTP-" + (oMPM == null ? "" : oMPM.getId() + "-") + sId + "-Timer";
    Timer oRefreshTimer = new Timer(sTimername, true);

    // Establish HttpClient
    HttpClient oHttpClient = new HttpClient();

    if (iTimeout > 0) {
        // Set configured Timeout settings
        oHttpClient.getParams().setSoTimeout(iTimeout);
    }

    oProvider = MetadataProviderUtil.createProviderForURL(sMetadataURL, oParserPool, oRefreshTimer,
            oHttpClient);

    if (oProvider != null) {
        // Start managing it:
        if (oMPM != null) {
            oMPM.setProviderFor(sId, oProvider, oRefreshTimer);
        }
    } else {
        // Unsuccessful creation; clean up created Timer
        oRefreshTimer.cancel();
    }

    return oProvider;
}

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

private static Map<String, ExchangeRate> getLitecoinCharts() {
    final Map<String, ExchangeRate> rates = new TreeMap<String, ExchangeRate>();
    // Keep the BTC rate around for a bit
    Double btcRate = 0.0;/*from w ww .  ja  v a 2  s.  com*/

    Object result = getGoldCoinValueBTC();

    if (result == null) {
        return null;
    }

    else
        btcRate = (Double) result;

    //Double btcRate = 0.0;
    try {
        rates.put("BTC", new ExchangeRate("BTC",
                Utils.toNanoCoins(String.format("%.8f", btcRate).replace(",", ".")), "pubapi.cryptsy.com"));
        String currencies[] = { "USD" };//, "BTC"};//, "RUR"};
        String urls[] = { "https://btc-e.com/api/2/1/ticker" };//, "https://btc-e.com/api/2/14/ticker", "https://btc-e.com/api/2/ltc_rur/ticker"};
        for (int i = 0; i < currencies.length; ++i) {
            final String currencyCode = currencies[i];
            final URL URL = new URL(urls[i]);
            final URLConnection connection = URL.openConnection();
            connection.setConnectTimeout(TIMEOUT_MS);
            connection.setReadTimeout(TIMEOUT_MS);
            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());
                JSONObject ticker = head.getJSONObject("ticker");
                Double avg = ticker.getDouble("avg") * btcRate;
                String euros = String.format("%.8f", avg);
                // Fix things like 3,1250
                euros = euros.replace(",", ".");
                rates.put(currencyCode,
                        new ExchangeRate(currencyCode, Utils.toNanoCoins(euros), URL.getHost()));
                if (currencyCode.equalsIgnoreCase("BTC"))
                    btcRate = avg;
            } finally {
                if (reader != null)
                    reader.close();
            }
        }
        // Handle LTC/EUR special since we have to do maths
        final URL URL = new URL("https://btc-e.com/api/2/btc_eur/ticker");
        final URLConnection connection = URL.openConnection();
        connection.setConnectTimeout(TIMEOUT_MS);
        connection.setReadTimeout(TIMEOUT_MS);
        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());
            JSONObject ticker = head.getJSONObject("ticker");
            Double avg = ticker.getDouble("avg");
            // This is bitcoins priced in euros.  We want GLD!
            avg *= btcRate;
            String s_avg = String.format("%.8f", avg).replace(',', '.');
            rates.put("EUR", new ExchangeRate("EUR", Utils.toNanoCoins(s_avg), URL.getHost()));

            //Add LTC information
            //s_avg = String.format("%.8f", ltcRate);
            //rates.put("LTC", new ExchangeRate("LTC", Utils.toNanoCoins(s_avg), URL.getHost()));
        } finally {
            if (reader != null)
                reader.close();
        }
        return rates;
    } catch (final IOException x) {
        x.printStackTrace();
    } catch (final JSONException x) {
        x.printStackTrace();
    }

    return null;
}

From source file:tufts.vue.ds.XMLIngest.java

private static InputStream getTestXMLStream() throws IOException {

    //         // SMF 2008-10-02: E.g. Craigslist XML streams use ISO-8859-1, which is provided in
    //         // HTML headers as "Content-Type: application/rss+xml; charset=ISO-8859-1", (tho not
    //         // in a special content-encoding header), and our current XML parser fails unless
    //         // the stream is read with this set: e.g.: [org.xml.sax.SAXParseException: Character
    //         // conversion error: "Unconvertible UTF-8 character beginning with 0x95" (line
    //         // number may be too low).]  Actually, in this case it turns out that providing a
    //         // default InputStreamReader (encoding not specified) as opposed to a direct
    //         // InputStream from the URLConnection works, and the XML parser is presumably then
    //         // finding and handling the "<?xml version="1.0" encoding="ISO-8859-1"?>" line at
    //         // the top of the XML stream
    //         final XmlSchema schema = new XmlSchema(conn.getURL(), itemKey);
    //         InputStream is = null;
    //         try {
    //             is = conn.getInputStream();
    //             errout("GOT INPUT STREAM: " + Util.tags(is));
    //         } catch (IOException e) {
    //             e.printStackTrace();
    //             return null;
    //         }/*from   ww  w.  j  a  v a  2 s.c  o m*/
    //         final Document doc = parseXML(is, false);

    // Could also use a ROME API XmlReader(URLConnection) for handling
    // the input, which does it's own magic to figure out the encoding.
    // For more on the complexity of this issue, see:
    // http://diveintomark.org/archives/2004/02/13/xml-media-types

    URL url = new URL(JIRA_VUE_URL);
    URLConnection conn = url.openConnection();
    conn.setRequestProperty("Cookie", JIRA_SFRAIZE_COOKIE);
    errout("Opening connection to " + url);
    conn.connect();

    errout("Getting InputStream...");
    InputStream in = conn.getInputStream();
    errout("Got " + Util.tags(in));

    errout("Getting headers...");
    Map<String, List<String>> headers = conn.getHeaderFields();

    errout("HEADERS:");
    for (Map.Entry<String, List<String>> e : headers.entrySet()) {
        errout(e.getKey() + ": " + e.getValue());
    }

    return in;
}

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

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

    if ((now < (lastBitcoinValueCheck + 10 * 60)) && lastBitcoinValue > 0.0)
        return lastBitcoinValue;

    //final Map<String, ExchangeRate> rates = new TreeMap<String, ExchangeRate>();
    // Keep the LTC rate around for a bit
    Double btcRate = 0.0;/*  w  w w.jav  a  2s.com*/
    String currencyCryptsy = "BTC";
    String urlCryptsy2 = "http://pubapi.cryptsy.com/api.php?method=marketdata";
    String urlCryptsy = "http://pubapi.cryptsy.com/api.php?method=singlemarketdata&marketid=30";

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

        final StringBuilder contentCryptsy = new StringBuilder();

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

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

            double btcTraded = 0.0;
            double gldTraded = 0.0;

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

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

            }

            Double averageTrade = btcTraded / gldTraded;

            //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;

            lastBitcoinValue = btcRate;
            lastBitcoinValueCheck = now;
        } finally {
            if (reader != null)
                reader.close();
        }
        return btcRate;
    } catch (final IOException x) {
        x.printStackTrace();
    } catch (final JSONException x) {
        x.printStackTrace();
    }

    return null;
}

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

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

    if ((now < (lastBitcoinValueCheck + 10 * 60)) && lastBitcoinValue > 0.0)
        return lastBitcoinValue;

    //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  a2 s  .  com*/
    String currencyCryptsy = "BTC";
    String urlCryptsy = "https://c-cex.com/t/gld-btc.json";

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

        final StringBuilder contentCryptsy = new StringBuilder();

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

            //JSONObject returnObject = head.getJSONObject("return");
            //JSONObject markets = returnObject.getJSONObject("markets");
            JSONObject GLD = head.getJSONObject("ticker");

            //JSONArray recenttrades = GLD.getJSONArray("recenttrades");

            double btcTraded = 0.0;
            double gldTraded = 0.0;

            /*for(int i = 0; i < recenttrades.length(); ++i)
            {
            JSONObject trade = (JSONObject)recenttrades.get(i);
                    
            btcTraded += trade.getDouble("total");
            gldTraded += trade.getDouble("quantity");
                    
            }
                    
            Double averageTrade = btcTraded / gldTraded;
            */

            Double averageTrade = head.getDouble("buy");

            //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;

            lastBitcoinValue = btcRate;
            lastBitcoinValueCheck = now;
        } finally {
            if (reader != null)
                reader.close();
        }
        return btcRate;
    } catch (final IOException x) {
        x.printStackTrace();
    } catch (final JSONException x) {
        x.printStackTrace();
    }

    return null;
}

From source file:org.nuxeo.rss.reader.FeedHelper.java

public static SyndFeed parseFeed(String feedUrl) throws Exception {
    URL url = new URL(feedUrl);
    SyndFeedInput input = new SyndFeedInput();
    URLConnection urlConnection;
    if (FeedUrlConfig.useProxy()) {
        SocketAddress addr = new InetSocketAddress(FeedUrlConfig.getProxyHost(), FeedUrlConfig.getProxyPort());
        Proxy proxy = new Proxy(Proxy.Type.HTTP, addr);
        urlConnection = url.openConnection(proxy);
        if (FeedUrlConfig.isProxyAuthenticated()) {
            String encoded = Base64.encodeBytes(
                    new String(FeedUrlConfig.getProxyLogin() + ":" + FeedUrlConfig.getProxyPassword())
                            .getBytes());
            urlConnection.setRequestProperty("Proxy-Authorization", "Basic " + encoded);
            urlConnection.connect();
        }//from   ww  w .  ja  v a 2 s . c o  m
    } else {
        urlConnection = url.openConnection();
    }
    SyndFeed feed = input.build(new XmlReader(urlConnection));
    return feed;
}

From source file:ubic.gemma.loader.expression.geo.DatasetCombiner.java

/**
 * Given a GDS, find the corresponding GSEs (there can be more than one in rare cases).
 * /*from w  w  w  .jav  a2s. co m*/
 * @param datasetAccession
 * @return Collection of series this data set is derived from (this is almost always just a single item).
 */
public static Collection<String> findGSEforGDS(String datasetAccession) {
    /*
     * go from GDS to GSE, using screen scraping.
     */
    // http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=gds&term=GSE674[Accession]&cmd=search
    // grep on "GDS[[digits]] record"
    URL url = null;

    Pattern pat = Pattern.compile(GSE_RECORD_REGEXP);

    Collection<String> associatedSeriesAccession = new HashSet<String>();

    try {
        url = new URL(ENTREZ_GEO_QUERY_URL_BASE + datasetAccession + ENTREZ_GEO_QUERY_URL_SUFFIX);

        URLConnection conn = url.openConnection();
        conn.connect();
        InputStream is = conn.getInputStream();
        BufferedReader br = new BufferedReader(new InputStreamReader(is));
        String line = null;
        while ((line = br.readLine()) != null) {
            Matcher mat = pat.matcher(line);
            if (mat.find()) {
                String capturedAccession = mat.group(1);
                associatedSeriesAccession.add(capturedAccession);
            }
        }
        is.close();
    } catch (MalformedURLException e) {
        log.error(e, e);
        throw new RuntimeException("Invalid URL " + url, e);
    } catch (IOException e) {
        log.error(e, e);
        throw new RuntimeException("Could not get data from remote server", e);
    }

    if (associatedSeriesAccession.size() == 0) {
        throw new IllegalStateException("No GSE found for " + datasetAccession);
    }

    return associatedSeriesAccession;

}

From source file:org.spoutcraft.launcher.util.Utils.java

public static String executePost(String targetURL, String urlParameters, JProgressBar progress)
        throws PermissionDeniedException {
    URLConnection connection = null;
    try {//from w w w  .  j  a  va  2  s.  c o  m
        URL url = new URL(targetURL);
        connection = url.openConnection();
        connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");

        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.setConnectTimeout(10000);

        connection.connect();

        DataOutputStream wr = new DataOutputStream(connection.getOutputStream());
        wr.writeBytes(urlParameters);
        wr.flush();
        wr.close();

        InputStream is = connection.getInputStream();
        BufferedReader rd = new BufferedReader(new InputStreamReader(is));

        StringBuilder response = new StringBuilder();
        String line;
        while ((line = rd.readLine()) != null) {
            response.append(line);
            response.append('\r');
        }
        rd.close();

        return response.toString();
    } catch (SocketException e) {
        if (e.getMessage().equalsIgnoreCase("Permission denied: connect")) {
            throw new PermissionDeniedException("Permission to login was denied");
        }
    } catch (Exception e) {
        String message = "Login failed...";
        progress.setString(message);
    }
    return null;
}

From source file:com.elega9t.commons.geo.impl.HostIpDotInfoGeoLocationProvider.java

@Override
public GeoLocationInfo lookup(String ip) throws IOException {
    URL url = new URL("http://api.hostip.info/get_json.php?ip=" + URLEncoder.encode(ip, "UTF-8"));
    URLConnection connection = url.openConnection();
    connection.connect();
    InputStream inputStream = connection.getInputStream();
    String json = IOUtilities.toString(inputStream);
    inputStream.close();/*from w  ww.  j  a  v  a  2 s . co  m*/
    try {
        JSONObject object = new JSONObject(json);
        return new GeoLocationInfo(object.getString("ip"), object.getString("country_name"),
                object.getString("country_code"), object.getString("city"));
    } catch (JSONException e) {
        throw new IOException(e);
    }
}