Example usage for java.net URLConnection setUseCaches

Introduction

In this page you can find the example usage for java.net URLConnection setUseCaches.

Prototype

public void setUseCaches(boolean usecaches) 

Source Link

Document

Sets the value of the useCaches field of this URLConnection to the specified value.

Usage

From source file:util.connection.AnonymousClient.java

public String download(URL source) throws IOException {
    // set the request URL
    URL request = new URL(source, source.getFile(), handler);
    // send request and receive response
    log.info("download (start) from source=" + source);
    URLConnection connection = request.openConnection();
    connection.setDoOutput(true);/*from w w  w .  ja  v a2  s  . c  om*/
    connection.setDoInput(true);
    connection.setUseCaches(false);
    connection.setAllowUserInteraction(false);

    connection.connect();

    String responsebody = IOUtils.toString(connection.getInputStream(), "UTF-8");
    // read the response
    netLayer.clear();
    netLayer.waitUntilReady();
    return responsebody;
}

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From source file:com.example.m.niceproject.service.YahooWeatherService.java

public void refreshWeather(String location) {

    new AsyncTask<String, Void, Channel>() {
        @Override/*  w  w  w .  j  av a 2 s  . c  o  m*/
        protected Channel doInBackground(String[] locations) {

            String location = locations[0];

            Channel channel = new Channel();

            String YQL = String.format(
                    "select * from weather.forecast where woeid in (select woeid from geo.places(1) where text=\"%s\")",
                    location);

            String endpoint = String.format("https://query.yahooapis.com/v1/public/yql?q=%s&format=json",
                    Uri.encode(YQL));

            try {
                URL url = new URL(endpoint);

                URLConnection connection = url.openConnection();
                connection.setUseCaches(false);

                InputStream inputStream = connection.getInputStream();

                BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
                StringBuilder result = new StringBuilder();
                String line;
                while ((line = reader.readLine()) != null) {
                    result.append(line);
                }

                JSONObject data = new JSONObject(result.toString());

                JSONObject queryResults = data.optJSONObject("query");

                int count = queryResults.optInt("count");

                if (count == 0) {
                    error = new LocationWeatherException("No weather information found for " + location);
                    return null;
                }

                JSONObject channelJSON = queryResults.optJSONObject("results").optJSONObject("channel");
                channel.populate(channelJSON);

                return channel;

            } catch (Exception e) {
                error = e;
            }

            return null;
        }

        @Override
        protected void onPostExecute(Channel channel) {

            if (channel == null && error != null) {
                listener.serviceFailure(error);
            } else {
                listener.serviceSuccess(channel);
            }

        }

    }.execute(location);
}

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From source file:org.jahia.services.render.scripting.bundle.BundleSourceResourceResolver.java

private InputStream getInputStream(URL url) throws IOException {
    URLConnection con = url.openConnection();
    con.setUseCaches(false);
    try {//from  w w  w.j a  v a 2  s  .  c  om
        return con.getInputStream();
    } catch (IOException ex) {
        // Close the HTTP connection (if applicable).
        if (con instanceof HttpURLConnection) {
            ((HttpURLConnection) con).disconnect();
        }
        throw ex;
    }
}

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From source file:org.fingerprintsoft.io.SingletonApplicationPropertiesLocator.java

private InputStream getInputStream(String resourceLocation) throws IOException {
    InputStream is = null;//  w ww.  j av a  2s.c  om
    if (resourceLocation.startsWith(CLASSPATH_URL_PREFIX)) {

        is = this.getClass().getClassLoader()
                .getResourceAsStream(resourceLocation.substring(CLASSPATH_URL_PREFIX.length()));
    }

    if (resourceLocation.startsWith(FILE_URL_PREFIX)) {
        URL url = new URL(resourceLocation);
        URLConnection con = url.openConnection();
        con.setUseCaches(false);
        is = con.getInputStream();

    }

    if (is == null) {
        throw new FileNotFoundException(resourceLocation + " cannot be opened because it does not exist");
    }

    return is;

}

---

From source file:eu.europa.ec.markt.dss.applet.io.NativeHTTPDataLoader.java

@Override
public InputStream post(String url, InputStream content) throws CannotFetchDataException {

    try {//from w w  w  . ja  v a2s  . c  o  m
        URLConnection connection = new URL(url).openConnection();

        connection.setDoInput(true);
        connection.setDoOutput(true);
        connection.setUseCaches(false);

        OutputStream out = connection.getOutputStream();
        IOUtils.copy(content, out);
        out.close();

        return connection.getInputStream();
    } catch (IOException ex) {
        throw new CannotFetchDataException(ex, url);
    }
}

---

From source file:org.apache.jcs.auxiliary.lateral.http.broadcast.LateralCacheThread.java

/** Description of the Method */
public void writeObj(URLConnection connection, ICacheElement cb) {
    try {/*from  w  w  w .j a v  a 2  s.  c o m*/
        connection.setUseCaches(false);
        connection.setRequestProperty("CONTENT_TYPE", "application/octet-stream");
        connection.setDoOutput(true);
        connection.setDoInput(true);
        ObjectOutputStream os = new ObjectOutputStream(connection.getOutputStream());
        log.debug("os = " + os);

        // Write the ICacheItem to the ObjectOutputStream
        log.debug("Writing  ICacheItem.");

        os.writeObject(cb);
        os.flush();

        log.debug("closing output stream");

        os.close();
    } catch (IOException e) {
        log.error(e);
    }
    // end catch
}

---

From source file:com.ocpsoft.pretty.config.PrettyConfigurator.java

/**
 * Opens an input stream for the given URL.
 * /*from w  w  w . j  a  v a2s .  co  m*/
 * @param url
 *            target URL.
 * @return Opened input stream.
 * @throws IOException
 *             If connection could not be opened.
 */
protected InputStream openStream(final URL url) throws IOException {
    final URLConnection connection = url.openConnection();
    connection.setUseCaches(false);
    return connection.getInputStream();
}

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From source file:org.josso.auth.scheme.validation.CRLX509CertificateValidator.java

public void validate(X509Certificate certificate) throws X509CertificateValidationException {

    try {/*from  ww w. j a  v a2 s  .com*/
        URL crlUrl = null;
        if (_url != null) {
            crlUrl = new URL(_url);
            log.debug("Using the CRL server at: " + _url);
        } else {
            log.debug("Using the CRL server specified in the certificate.");
            System.setProperty("com.sun.security.enableCRLDP", "true");
        }

        // configure the proxy
        if (_httpProxyHost != null && _httpProxyPort != null) {
            System.setProperty("http.proxyHost", _httpProxyHost);
            System.setProperty("http.proxyPort", _httpProxyPort);
        } else {
            System.clearProperty("http.proxyHost");
            System.clearProperty("http.proxyPort");
        }

        // get certificate path
        CertPath cp = generateCertificatePath(certificate);

        // get trust anchors
        Set<TrustAnchor> trustedCertsSet = generateTrustAnchors();

        // init PKIX parameters
        PKIXParameters params = new PKIXParameters(trustedCertsSet);

        // activate certificate revocation checking
        params.setRevocationEnabled(true);

        // disable OCSP
        Security.setProperty("ocsp.enable", "false");

        // get a certificate revocation list
        if (crlUrl != null) {
            URLConnection connection = crlUrl.openConnection();
            connection.setDoInput(true);
            connection.setUseCaches(false);
            DataInputStream inStream = new DataInputStream(connection.getInputStream());
            CertificateFactory cf = CertificateFactory.getInstance("X.509");
            X509CRL crl = (X509CRL) cf.generateCRL(inStream);
            inStream.close();
            params.addCertStore(CertStore.getInstance("Collection",
                    new CollectionCertStoreParameters(Collections.singletonList(crl))));
        }

        // perform validation
        CertPathValidator cpv = CertPathValidator.getInstance("PKIX");
        PKIXCertPathValidatorResult cpvResult = (PKIXCertPathValidatorResult) cpv.validate(cp, params);
        X509Certificate trustedCert = (X509Certificate) cpvResult.getTrustAnchor().getTrustedCert();

        if (trustedCert == null) {
            log.debug("Trsuted Cert = NULL");
        } else {
            log.debug("Trusted CA DN = " + trustedCert.getSubjectDN());
        }

    } catch (CertPathValidatorException e) {
        log.error(e, e);
        throw new X509CertificateValidationException(e);
    } catch (Exception e) {
        log.error(e, e);
        throw new X509CertificateValidationException(e);
    }
    log.debug("CERTIFICATE VALIDATION SUCCEEDED");
}

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From source file:com.sabre.hack.travelachievementgame.DSCommHandler.java

public String getAuthToken(String apiEndPoint, String encodedCliAndSecret) {

    //receives : apiEndPoint (https://api.test.sabre.com)
    //encodedCliAndSecret : base64Encode(  base64Encode(V1:[user]:[group]:[domain]) + ":" + base64Encode([secret]) )
    String strRet = null;/*from  w w  w.  j  a  va  2  s.co  m*/

    try {

        URL urlConn = new URL(apiEndPoint + "/v1/auth/token");
        URLConnection conn = urlConn.openConnection();

        conn.setDoInput(true);
        conn.setDoOutput(true);
        conn.setUseCaches(false);

        conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
        conn.setRequestProperty("Authorization", "Basic " + encodedCliAndSecret);
        conn.setRequestProperty("Accept", "application/json");

        //send request
        DataOutputStream dataOut = new DataOutputStream(conn.getOutputStream());
        dataOut.writeBytes("grant_type=client_credentials");
        dataOut.flush();
        dataOut.close();

        //get response
        BufferedReader rd = new BufferedReader(new InputStreamReader(conn.getInputStream()));
        String strChunk = "";
        StringBuilder sb = new StringBuilder();
        while (null != ((strChunk = rd.readLine())))
            sb.append(strChunk);

        //parse the token
        JSONObject respParser = new JSONObject(sb.toString());
        strRet = respParser.getString("access_token");

    } catch (MalformedURLException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (JSONException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

    return strRet;

}

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From source file:org.openmrs.module.ModuleUtil.java

/**
 * Downloads the contents of a URL and copies them to a string (Borrowed from oreilly)
 *
 * @param url/*from ww w  .  j a v  a  2s.co m*/
 * @return InputStream of contents
 * @should return a valid input stream for old module urls
 */
public static InputStream getURLStream(URL url) {
    InputStream in = null;
    try {
        URLConnection uc = url.openConnection();
        uc.setDefaultUseCaches(false);
        uc.setUseCaches(false);
        uc.setRequestProperty("Cache-Control", "max-age=0,no-cache");
        uc.setRequestProperty("Pragma", "no-cache");

        log.debug("Logging an attempt to connect to: " + url);

        in = openConnectionCheckRedirects(uc);
    } catch (IOException io) {
        log.warn("io while reading: " + url, io);
    }

    return in;
}

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