Example usage for java.net HttpURLConnection setInstanceFollowRedirects

Introduction

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

Prototype

public void setInstanceFollowRedirects(boolean followRedirects) 

Source Link

Document

Sets whether HTTP redirects (requests with response code 3xx) should be automatically followed by this HttpURLConnection instance.

Usage

From source file:vocab.VocabUtils.java

/**
 * Jena fails to load models in https with content negotiation. Therefore I do
 * the negotiation here directly//from   w  w  w.  j  av  a2  s  .c o  m
 */
private static void doContentNegotiation(OntModel model, Vocabulary v, String accept, String serialization) {
    try {
        model.read(v.getUri(), null, serialization);

    } catch (Exception e) {
        try {
            System.out.println("Failed to read the ontology. Doing content negotiation");
            URL url = new URL(v.getUri());
            HttpURLConnection connection = (HttpURLConnection) url.openConnection();
            connection.setRequestMethod("GET");
            connection.setInstanceFollowRedirects(true);
            connection.setRequestProperty("Accept", accept);

            int status = connection.getResponseCode();
            if (status == HttpURLConnection.HTTP_SEE_OTHER || status == HttpURLConnection.HTTP_MOVED_TEMP
                    || status == HttpURLConnection.HTTP_MOVED_PERM) {
                String newUrl = connection.getHeaderField("Location");
                //v.setUri(newUrl);
                connection = (HttpURLConnection) new URL(newUrl).openConnection();
                connection.setRequestProperty("Accept", accept);
                InputStream in = (InputStream) connection.getInputStream();
                model.read(in, null, serialization);
            }
        } catch (Exception e2) {
            System.out.println("Failed to read the ontology");
        }
    }
}

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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;//from   ww w . j a  v a2 s.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;
}

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From source file:piuk.blockchain.android.util.WalletUtils.java

public static String postURL(String request, String urlParameters) throws Exception {
    String error = null;/*ww  w.j  a  va  2 s  . com*/

    for (int ii = 0; ii < DefaultRequestRetry; ++ii) {
        URL url = new URL(request);
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        try {
            connection.setDoOutput(true);
            connection.setDoInput(true);
            connection.setInstanceFollowRedirects(false);
            connection.setRequestMethod("POST");
            connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
            connection.setRequestProperty("charset", "utf-8");
            connection.setRequestProperty("Accept", "application/json");
            connection.setRequestProperty("Content-Length",
                    "" + Integer.toString(urlParameters.getBytes().length));
            connection.setRequestProperty("User-Agent",
                    "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/31.0.1650.57 Safari/537.36");

            connection.setUseCaches(false);

            connection.setConnectTimeout(DefaultRequestTimeout);
            connection.setReadTimeout(DefaultRequestTimeout);

            connection.connect();

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

            connection.setInstanceFollowRedirects(false);

            if (connection.getResponseCode() == 200) {
                //               Log.d("postURL", "return code 200");
                return IOUtils.toString(connection.getInputStream(), "UTF-8");
            } else {
                error = IOUtils.toString(connection.getErrorStream(), "UTF-8");
                //               Log.d("postURL", "return code " + error);
            }

            Thread.sleep(5000);
        } finally {
            connection.disconnect();
        }
    }

    throw new Exception("Inavlid Response " + error);
}

---

From source file:org.dcm4che3.tool.stowrs.StowRS.java

private static StowRSResponse sendDicomFile(String url, File f) throws IOException {
    int rspCode = 0;
    String rspMessage = null;//ww  w  . ja v a 2 s .c  om

    URL newUrl = new URL(url);
    HttpURLConnection connection = (HttpURLConnection) newUrl.openConnection();
    connection.setDoOutput(true);
    connection.setDoInput(true);
    connection.setInstanceFollowRedirects(false);
    connection.setRequestMethod("POST");
    connection.setRequestProperty("Content-Type",
            "multipart/related; type=application/dicom; boundary=" + MULTIPART_BOUNDARY);
    connection.setRequestProperty("Accept", "application/dicom+xml");
    connection.setRequestProperty("charset", "utf-8");
    connection.setUseCaches(false);

    DataOutputStream wr;
    wr = new DataOutputStream(connection.getOutputStream());
    wr.writeBytes("\r\n--" + MULTIPART_BOUNDARY + "\r\n");
    wr.writeBytes("Content-Disposition: inline; name=\"file[]\"; filename=\"" + f.getName() + "\"\r\n");
    wr.writeBytes("Content-Type: application/dicom \r\n");
    wr.writeBytes("\r\n");
    FileInputStream fis = new FileInputStream(f);
    StreamUtils.copy(fis, wr);
    fis.close();
    wr.writeBytes("\r\n--" + MULTIPART_BOUNDARY + "--\r\n");
    wr.flush();
    wr.close();
    String response = connection.getResponseMessage();
    rspCode = connection.getResponseCode();
    rspMessage = connection.getResponseMessage();
    LOG.info("response: " + response);
    Attributes responseAttrs = null;
    try {
        InputStream in;
        boolean isErrorCase = rspCode >= HttpURLConnection.HTTP_BAD_REQUEST;
        if (!isErrorCase) {
            in = connection.getInputStream();
        } else {
            in = connection.getErrorStream();
        }
        if (!isErrorCase || rspCode == HttpURLConnection.HTTP_CONFLICT)
            responseAttrs = SAXReader.parse(in);
    } catch (SAXException e) {
        throw new IOException(e);
    } catch (ParserConfigurationException e) {
        throw new IOException(e);
    }
    connection.disconnect();

    return new StowRSResponse(rspCode, rspMessage, responseAttrs);
}

---

From source file:net.technicpack.launchercore.util.Utils.java

/**
 * Establishes an HttpURLConnection from a URL, with the correct configuration to receive content from the given URL.
 *
 * @param url The URL to set up and receive content from
 * @return A valid HttpURLConnection/*from  w  w w. j a  v a  2 s  . c  om*/
 *
 * @throws IOException The openConnection() method throws an IOException and the calling method is responsible for handling it.
 */
public static HttpURLConnection openHttpConnection(URL url) throws IOException {
    HttpURLConnection conn = (HttpURLConnection) url.openConnection();
    conn.setDoInput(true);
    conn.setDoOutput(false);
    System.setProperty("http.agent",
            "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.19 (KHTML, like Gecko) Chrome/18.0.1025.162 Safari/535.19");
    conn.setRequestProperty("User-Agent",
            "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.19 (KHTML, like Gecko) Chrome/18.0.1025.162 Safari/535.19");
    HttpURLConnection.setFollowRedirects(true);
    conn.setUseCaches(false);
    conn.setInstanceFollowRedirects(true);
    return conn;
}

---

From source file:net.technicpack.launchercore.util.DownloadUtils.java

public static String getETag(String address) {
    String md5 = "";

    try {//w  w w.  j a va 2 s .c  o m
        URL url = new URL(address);
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        conn.setDoInput(true);
        conn.setDoOutput(false);
        System.setProperty("http.agent",
                "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.19 (KHTML, like Gecko) Chrome/18.0.1025.162 Safari/535.19");
        conn.setRequestProperty("User-Agent",
                "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.19 (KHTML, like Gecko) Chrome/18.0.1025.162 Safari/535.19");
        HttpURLConnection.setFollowRedirects(true);
        conn.setUseCaches(false);
        conn.setInstanceFollowRedirects(true);

        String eTag = conn.getHeaderField("ETag");
        if (eTag != null) {
            eTag = eTag.replaceAll("^\"|\"$", "");
            if (eTag.length() == 32) {
                md5 = eTag;
            }
        }
    } catch (MalformedURLException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }

    return md5;
}

---

From source file:BihuHttpUtil.java

/**
 * ??HTTPJSON?//from   w  w w .  j a  v  a2s.  c o  m
 * @param url
 * @param jsonStr
 */
public static String sendPostForJson(String url, String jsonStr) {
    StringBuffer sb = new StringBuffer("");
    try {
        //
        URL realUrl = new URL(url);
        HttpURLConnection connection = (HttpURLConnection) realUrl.openConnection();
        connection.setDoOutput(true);
        connection.setDoInput(true);
        connection.setRequestMethod("POST");
        connection.setUseCaches(false);
        connection.setInstanceFollowRedirects(true);
        connection.setRequestProperty("Content-Type", "application/json; charset=UTF-8");
        connection.connect();
        //POST
        DataOutputStream out = new DataOutputStream(connection.getOutputStream());
        out.write(jsonStr.getBytes("UTF-8"));//???
        out.flush();
        out.close();
        //??
        BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
        String lines;
        while ((lines = reader.readLine()) != null) {
            lines = new String(lines.getBytes(), "utf-8");
            sb.append(lines);
        }
        reader.close();
        // 
        connection.disconnect();
    } catch (Exception e) {
        e.printStackTrace();
    }
    return sb.toString();
}

---

From source file:org.rapidcontext.app.plugin.http.HttpPostProcedure.java

/**
 * Creates an HTTP connection for the specified URL and headers.
 *
 * @param url            the URL to use/*from  w w w. jav  a2  s . c  o m*/
 * @param headers        the additional HTTP headers
 *
 * @return the HTTP connection created
 *
 * @throws ProcedureException if the connection couldn't be created
 */
private static HttpURLConnection createConnection(URL url, Map headers) throws ProcedureException {

    HttpURLConnection con;
    String msg;

    try {
        con = (HttpURLConnection) url.openConnection();
    } catch (IOException e) {
        msg = "failed to open URL " + url + ":" + e.getMessage();
        throw new ProcedureException(msg);
    }
    con.setDoInput(true);
    con.setAllowUserInteraction(false);
    con.setUseCaches(false);
    con.setInstanceFollowRedirects(false);
    con.setConnectTimeout(10000);
    con.setReadTimeout(45000);
    con.setRequestProperty("Cache-Control", "no-cache");
    con.setRequestProperty("Accept", "text/*, application/*");
    con.setRequestProperty("Accept-Charset", "UTF-8");
    con.setRequestProperty("Accept-Encoding", "identity");
    // TODO: Extract correct version number from JAR file
    con.setRequestProperty("User-Agent", "RapidContext/1.0");
    Iterator iter = headers.keySet().iterator();
    while (iter.hasNext()) {
        String str = (String) iter.next();
        con.setRequestProperty(str, (String) headers.get(str));
    }
    return con;
}

---

From source file:edu.stanford.muse.index.NER.java

/** returns a list of <name, #occurrences> */
public static List<Pair<String, Float>> namesFromURL(String url, boolean removeCommonNames)
        throws ClassCastException, IOException, ClassNotFoundException {
    // only http conns allowed currently
    Indexer.log.info(url);//ww w  .j ava 2 s .  c  om
    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();
    Indexer.log.info("url for extracting names:" + conn.getURL());
    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();
    return namesFromText(text, removeCommonNames);
}

---

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();//from   www. j  a  va  2 s  . com

    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();
    return namesFromText(text, removeCommonNames);
}

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