Example usage for java.net URLConnection connect

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:piuk.blockchain.android.ExchangeRatesProvider.java

private static Map<String, Double> getExchangeRates() {
    try {//from   w  ww . j a  v a 2s .  co  m
        final URLConnection connection = new URL("http://bitcoincharts.com/t/weighted_prices.json")
                .openConnection();
        // https://mtgox.com/code/data/ticker.php
        // https://bitmarket.eu/api/ticker
        // http://bitcoincharts.com/t/weighted_prices.json

        connection.connect();
        final Reader is = new InputStreamReader(new BufferedInputStream(connection.getInputStream()));
        final StringBuilder content = new StringBuilder();
        IOUtils.copy(is, content);
        is.close();

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

        final JSONObject head = new JSONObject(content.toString());
        for (@SuppressWarnings("unchecked")
        final Iterator<String> i = head.keys(); i.hasNext();) {
            final String currencyCode = i.next();
            if (!"timestamp".equals(currencyCode)) {
                final JSONObject o = head.getJSONObject(currencyCode);
                double rate = o.optDouble("24h", 0);
                if (rate == 0)
                    rate = o.optDouble("7d", 0);
                if (rate == 0)
                    rate = o.optDouble("30d", 0);

                if (rate != 0)
                    rates.put(currencyCode, rate);
            }
        }

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

    return null;
}

---

From source file:com.miqtech.master.client.ui.PersonalHomePhotoActivity.java

public static Bitmap getBitMBitmap(String urlpath) {
    Bitmap map = null;/*from  w  w w . j  a v a2 s.  com*/
    try {
        URL url = new URL(urlpath);
        URLConnection conn = url.openConnection();
        conn.connect();
        InputStream in;
        in = conn.getInputStream();
        map = BitmapFactory.decodeStream(in);
        // TODO Auto-generated catch block
    } catch (IOException e) {
        e.printStackTrace();
    }
    return map;
}

---

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

private static Map<String, ExchangeRate> getLycancoinCharts() {
    final Map<String, ExchangeRate> rates = new TreeMap<String, ExchangeRate>();
    try {/*from w w w  .  j  a  v  a  2  s  .c o m*/
        String currencies[] = { "USD", "EUR" };
        String urls[] = { "https://btc-e.com/api/2/btc_usd/ticker", "https://btc-e.com/api/2/btc_eur/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") * LycBtcRate;
                String euros = String.format("%.8f", avg);
                // Fix things like 3,1250
                euros = euros.replace(",", ".");
                rates.put(currencyCode, new ExchangeRate(currencyCode, Utils.toNanoCoins(euros),
                        "cryptsy.com and " + 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:model.Modele.java

/**
 * Methode qui vrifie s'il y a une connexin internet
 *
 * @return vrai s'il y a une connexion, faux s'il y a pas de connexion
 *///from   w  w w  .j  av  a  2  s  . co  m
public static boolean netIsAvailable() {
    try {
        final URL url = new URL("http://www.google.com");
        final URLConnection conn = url.openConnection();
        conn.connect();
        return true;
    } catch (MalformedURLException e) {
        throw new RuntimeException(e);
    } catch (IOException e) {
        return false;
    }
}

---

From source file:AnimatedMetadataGraph.java

public static JSONObject getAllResources(URL sfsUrl) {
    if (sfsUrl != null) {
        try {//from   w  w w  .ja  va2  s. c o m
            URL sfsGetRsrcsUrl = new URL(sfsUrl.toString() + "/admin/listrsrcs/");
            URLConnection smapConn = sfsGetRsrcsUrl.openConnection();
            smapConn.setConnectTimeout(5000);
            smapConn.connect();

            //GET reply
            BufferedReader reader = new BufferedReader(new InputStreamReader(smapConn.getInputStream()));
            StringBuffer lineBuffer = new StringBuffer();
            String line = null;
            while ((line = reader.readLine()) != null)
                lineBuffer.append(line);
            line = lineBuffer.toString();
            reader.close();

            return (JSONObject) JSONSerializer.toJSON(line);
        } catch (Exception e) {
            logger.log(Level.WARNING, "", e);
            return null;
        }
    }
    return null;
}

---

From source file:AnimatedMetadataGraph.java

public static JSONArray getChildren(URL sfsUrl, String path) {
    if (sfsUrl != null) {
        try {//w  ww.  j ava2s.c  o  m
            URL sfsGetRsrcsUrl = new URL(sfsUrl.toString() + path);
            URLConnection smapConn = sfsGetRsrcsUrl.openConnection();
            smapConn.setConnectTimeout(5000);
            smapConn.connect();

            //GET reply
            BufferedReader reader = new BufferedReader(new InputStreamReader(smapConn.getInputStream()));
            StringBuffer lineBuffer = new StringBuffer();
            String line = null;
            while ((line = reader.readLine()) != null)
                lineBuffer.append(line);
            line = lineBuffer.toString();
            reader.close();

            JSONObject resp = (JSONObject) JSONSerializer.toJSON(line);
            return resp.optJSONArray("children");
        } catch (Exception e) {
            logger.log(Level.WARNING, "", e);
            return null;
        }
    }
    return null;
}

---

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

private static Map<String, ExchangeRate> getElysiumCharts() {
    final Map<String, ExchangeRate> rates = new TreeMap<String, ExchangeRate>();
    // Keep the BTC rate around for a bit
    Double btcRate = 0.0;//from  www  . j av  a 2s  .c  om
    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/elsm_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");
                String euros = String.format("%.4f", 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 ELSM/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 elysiums priced in euros.  We want ELSM!
            avg *= btcRate;
            String s_avg = String.format("%.4f", avg).replace(',', '.');
            rates.put("EUR", new ExchangeRate("EUR", 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:de.schildbach.wallet.marscoin.ExchangeRatesProvider.java

private static Map<String, ExchangeRate> getmarscoinCharts() {
    final Map<String, ExchangeRate> rates = new TreeMap<String, ExchangeRate>();
    // Keep the BTC rate around for a bit
    Double btcRate = 0.0;//  w w w .  j a v  a  2 s  . co m
    try {
        String currencies[] = { "BTC" };
        //String urls[] = {"https://cryptorush.in/api.php?get=market&m=mrs&b=btc&json=true"};
        String urls[] = { "http://hlds.ws/marscoinj/api" };
        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");
                //rate = Float.parseFloat(head.getString("current_ask"));
                Double avg = head.getDouble("current_ask");
                //Double avg = Float.parseFloat(head.getString("current_ask"));
                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 MRS!
            avg *= btcRate;
            String s_avg = String.format("%.4f", avg).replace(',', '.');
            rates.put("EUR", new ExchangeRate("EUR", 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:com.feathercoin.wallet.feathercoin.ExchangeRatesProvider.java

private static Map<String, ExchangeRate> getBlockchainInfo() {
    try {/* w  w w  .j av a 2 s.com*/
        final URL URL = new URL("https://blockchain.info/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 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();
                final JSONObject o = head.getJSONObject(currencyCode);
                final String rate = o.optString("15m", null);

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

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

    return null;
}

---

From source file:org.springframework.ide.eclipse.boot.core.initializr.InitializrServiceSpec.java

public static InitializrServiceSpec parseFrom(URLConnectionFactory urlConnectionFactory, URL url)
        throws IOException, Exception {
    URLConnection conn = null;
    InputStream input = null;/*  w  w  w . j a va  2s  .  c om*/
    try {
        conn = urlConnectionFactory.createConnection(url);
        conn.addRequestProperty("Accept", JSON_CONTENT_TYPE_HEADER);
        conn.connect();
        input = conn.getInputStream();
        return parseFrom(input);
    } finally {
        if (input != null) {
            try {
                input.close();
            } catch (IOException e) {
            }
        }
    }
}

---

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