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:com.synapticpath.pisecure.modules.LogglyEventLoggerModule.java

private void logEvent(SystemEvent event) {

    try {/*from ww  w. java  2s.  c  o m*/
        byte[] postData = event.toJson().getBytes(StandardCharsets.UTF_8);

        int postDataLength = postData.length;
        URL url = new URL(String.format(postRequestUrl, token, tag));

        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        conn.setDoOutput(true);
        conn.setInstanceFollowRedirects(false);
        conn.setRequestMethod("POST");
        conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
        conn.setRequestProperty("charset", "utf-8");
        conn.setRequestProperty("Content-Length", Integer.toString(postDataLength));
        conn.setUseCaches(false);
        try (DataOutputStream wr = new DataOutputStream(conn.getOutputStream())) {
            wr.write(postData);
        }

        if (conn.getResponseCode() == 200) {
            BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream()));
            StringBuilder response = new StringBuilder();
            String inputLine = null;
            while ((inputLine = in.readLine()) != null) {
                response.append(inputLine);
            }
            in.close();
        }

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

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From source file:org.ednovo.goorusearchwidget.WebService.java

public InputStream getHttpStream(String urlString) throws IOException {
    InputStream in = null;//w  w  w  .  jav a 2s .c  o  m
    int response = -1;
    URL url = new URL(urlString);
    URLConnection conn = url.openConnection();
    if (!(conn instanceof HttpURLConnection))
        throw new IOException("Not an HTTP connection");

    try {
        HttpURLConnection httpConn = (HttpURLConnection) conn;
        httpConn.setAllowUserInteraction(false);
        httpConn.setInstanceFollowRedirects(true);
        httpConn.setRequestMethod("GET");
        httpConn.connect();
        response = httpConn.getResponseCode();
        Log.i("Response code :", "" + response);
        if (response == HttpURLConnection.HTTP_OK) {
            in = httpConn.getInputStream();
        }
    } catch (Exception e) {
        throw new IOException("Error connecting");
    } // end try-catch
    return in;
}

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From source file:org.apache.ambari.servicemonitor.probes.HttpProbe.java

@Override
public ProbeStatus ping(boolean livePing) {
    ProbeStatus status = new ProbeStatus();
    HttpURLConnection connection = null;
    try {/*from ww  w  . ja va2s .  co  m*/
        if (LOG.isDebugEnabled()) {
            LOG.debug("Fetching " + url + " with timeout " + timeout);
        }
        connection = (HttpURLConnection) url.openConnection();
        connection.setInstanceFollowRedirects(true);
        connection.setConnectTimeout(timeout);
        int rc = connection.getResponseCode();
        if (rc < min || rc > max) {
            String error = "Probe " + url + " error code: " + rc;
            LOG.info(error);
            status.fail(this, new IOException(error));
        } else {
            status.succeed(this);
        }
    } catch (IOException e) {
        String error = "Probe " + url + " failed: " + e;
        LOG.info(error, e);
        status.fail(this, new IOException(error, e));
    } finally {
        if (connection != null) {
            connection.disconnect();
        }
    }
    return status;
}

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From source file:com.eucalyptus.tokens.oidc.OidcDiscoveryCache.java

private OidcDiscoveryCachedResource fetchResource(final String url, final long timeNow,
        final OidcDiscoveryCachedResource cached) throws IOException {
    final URL location = new URL(url);
    final OidcResource oidcResource;
    { // setup url connection and resolve
        final HttpURLConnection conn = (HttpURLConnection) location.openConnection();
        conn.setAllowUserInteraction(false);
        conn.setInstanceFollowRedirects(false);
        conn.setConnectTimeout(CONNECT_TIMEOUT);
        conn.setReadTimeout(READ_TIMEOUT);
        conn.setUseCaches(false);/*from w  w  w  .  j  av  a2s .co  m*/
        if (cached != null) {
            if (cached.lastModified.isDefined()) {
                conn.setRequestProperty(HttpHeaders.IF_MODIFIED_SINCE, cached.lastModified.get());
            }
            if (cached.etag.isDefined()) {
                conn.setRequestProperty(HttpHeaders.IF_NONE_MATCH, cached.etag.get());
            }
        }
        oidcResource = resolve(conn);
    }

    // build cache entry from resource
    if (oidcResource.statusCode == 304) {
        return new OidcDiscoveryCachedResource(timeNow, cached);
    } else {
        return new OidcDiscoveryCachedResource(timeNow, Option.of(oidcResource.lastModifiedHeader),
                Option.of(oidcResource.etagHeader), ImmutableList.copyOf(oidcResource.certs), url,
                new String(oidcResource.content, StandardCharsets.UTF_8));
    }
}

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From source file:edu.mda.bioinfo.ids.DownloadFiles.java

private void downloadFromHttpToFile(String theURL, String theParameters, String theFile) throws IOException {
    // both in milliseconds
    //int connectionTimeout = 1000 * 60 * 3;
    //int readTimeout = 1000 * 60 * 3;
    try {/*from   ww w  .  j  av a2s .  c  om*/
        URL myURL = new URL(theURL);
        HttpURLConnection connection = (HttpURLConnection) myURL.openConnection();
        connection.setDoOutput(true);
        connection.setDoInput(true);
        connection.setInstanceFollowRedirects(false);
        connection.setRequestMethod("POST");
        connection.setRequestProperty("Content-Type", "text/plain");
        //connection.setRequestProperty("charset", "utf-8");
        if (null != theParameters) {
            System.out.println("Content-Length " + Integer.toString(theParameters.getBytes().length));
            connection.setRequestProperty("Content-Length",
                    "" + Integer.toString(theParameters.getBytes().length));
        }
        connection.setUseCaches(false);
        try (DataOutputStream wr = new DataOutputStream(connection.getOutputStream())) {
            if (null != theParameters) {
                wr.write(theParameters.getBytes());
            }
            wr.flush();
            File myFile = new File(theFile);
            System.out.println("Requesting " + myURL);
            FileUtils.copyInputStreamToFile(connection.getInputStream(), myFile);
            System.out.println("Downloaded " + myURL);
        } catch (IOException rethrownExp) {
            InputStream errorStr = connection.getErrorStream();
            if (null != errorStr) {
                System.err.println("Error stream returned: " + IOUtils.toString(errorStr));
            } else {
                System.err.println("No error stream returned");
            }
            throw rethrownExp;
        }
    } catch (IOException rethrownExp) {
        System.err.println("exception " + rethrownExp.getMessage() + " thrown while downloading " + theURL
                + " to " + theFile);
        throw rethrownExp;
    }
}

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From source file:org.cloudfoundry.identity.uaa.integration.TestAccountSetup.java

private OAuth2RestTemplate createRestTemplate(OAuth2ProtectedResourceDetails resource,
        AccessTokenRequest accessTokenRequest) {
    OAuth2ClientContext context = new DefaultOAuth2ClientContext(accessTokenRequest);
    OAuth2RestTemplate client = new OAuth2RestTemplate(resource, context);
    client.setRequestFactory(new SimpleClientHttpRequestFactory() {
        @Override/*from  ww w  .j av a2s.  c  om*/
        protected void prepareConnection(HttpURLConnection connection, String httpMethod) throws IOException {
            super.prepareConnection(connection, httpMethod);
            connection.setInstanceFollowRedirects(false);
        }
    });
    client.setErrorHandler(new ResponseErrorHandler() {
        // Pass errors through in response entity for status code analysis
        public boolean hasError(ClientHttpResponse response) throws IOException {
            return false;
        }

        public void handleError(ClientHttpResponse response) throws IOException {
        }
    });
    List<HttpMessageConverter<?>> list = new ArrayList<HttpMessageConverter<?>>();
    list.add(new StringHttpMessageConverter());
    list.add(new MappingJacksonHttpMessageConverter());
    client.setMessageConverters(list);
    return client;
}

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From source file:com.nbzs.ningbobus.ui.loaders.BusRunInfoReaderLoader.java

private BusLineRunInfoItem downloadOneFeedItem(Integer busLine) {
    try {//from   w ww. j a va  2  s  .c om
        URI newUri = URI.create(mFeedUri.toString() + "/" + Integer.toString(busLine) + "/?format=json");
        HttpURLConnection conn = (HttpURLConnection) newUri.toURL().openConnection();
        InputStream in;
        int status;

        conn.setDoInput(true);
        conn.setInstanceFollowRedirects(true);
        conn.setRequestProperty("User-Agent", getContext().getString(R.string.user_agent_string));

        in = conn.getInputStream();
        status = conn.getResponseCode();

        if (status < 400) {
            String result = IOUtils.readStream(in);
            BusLineRunInfoItem item = new BusLineRunInfoItem();
            //result = "{\"RunInfo\" : " + result + "}";
            JSONObject jo = new JSONObject(result);
            //item.setBusLineName(jo.getString("Name"));
            item.setBusLineCurrentInfo(jo.getString("RunInfo"));
            //result = URLDecoder.decode(result, "UTF-8");
            //item.setBusLineCurrentInfo(result);
            item.setBusLineName(FeedService.getBusLineFromId(getContext(), busLine));
            return item;
        }
        conn.disconnect();
    } catch (UnknownHostException e) {
        mActivity.runOnUiThread(new Runnable() {
            @Override
            public void run() {
                Toast.makeText(mActivity, "No network connection.", Toast.LENGTH_SHORT).show();
            }
        });
    } catch (IOException e) {
        Log.d(TAG, "error reading feed");
        Log.d(TAG, Log.getStackTraceString(e));
    } catch (IllegalStateException e) {
        Log.d(TAG, "this should not happen");
        Log.d(TAG, Log.getStackTraceString(e));
    } catch (JSONException e) {
        Log.d(TAG, "this should not happen");
        Log.d(TAG, Log.getStackTraceString(e));
    }
    return null;
}

---

From source file:com.boundary.camel.component.url.UrlClient.java

private void configureConnection(HttpURLConnection connection) throws ProtocolException {

    connection.setConnectTimeout(configuration.getTimeout());
    connection.setRequestMethod(configuration.getRequestMethod());
    connection.setInstanceFollowRedirects(configuration.getFollowRedirects());

    if (configuration.getUser() != null || configuration.getPassword() != null) {
        StringBuffer sb = new StringBuffer();
        if (configuration.getUser() != null) {
            sb.append(configuration.getUser());
        }//from  ww  w.  ja  va2  s .  c  o  m
        sb.append(":");
        if (configuration.getPassword() != null) {
            sb.append(configuration.getPassword());
        }
        connection.setRequestProperty("Authorization",
                "Basic " + Base64.encodeBase64String(sb.toString().getBytes()));
    }
}

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From source file:de.nava.informa.utils.FeedManagerEntry.java

/**
 * Updates the channel associated with this feed use conditional get stuff.
 * http://fishbowl.pastiche.org/2002/10/21/http_conditional_get_for_rss_hackers
 *
 * @throws FeedManagerException/*from   w w w .  j a va2 s.  c o  m*/
 */
private synchronized void updateChannel() throws FeedManagerException {
    try {
        String feedUrl = this.feed.getLocation().toString();

        URL aURL = new URL(feedUrl);
        URLConnection conn = aURL.openConnection();

        if (conn instanceof HttpURLConnection) {
            HttpURLConnection httpConn = (HttpURLConnection) conn;

            httpConn.setInstanceFollowRedirects(true);
            //    Hack for User-Agent : problem for
            // http://www.diveintomark.org/xml/rss.xml
            HttpHeaderUtils.setUserAgent(httpConn, "Informa Java API");
            HttpHeaderUtils.setETagValue(httpConn, this.httpHeaders.getETag());
            HttpHeaderUtils.setIfModifiedSince(httpConn, this.httpHeaders.getIfModifiedSince());
            httpConn.connect();
            if (httpConn.getResponseCode() == HttpURLConnection.HTTP_NOT_MODIFIED) {

                logger.info("cond. GET for feed at url " + feedUrl + ": no change");
                this.feed.setLastUpdated(new Date());
                // TODO : add a property in FeedIF interface for lastGet ?
                this.lastUpdate = System.currentTimeMillis();
                return;
            }
            logger.info("cond. GET for feed at url " + feedUrl + ": changed");
            logger.debug(
                    "feed at url " + feedUrl + " new values : ETag" + HttpHeaderUtils.getETagValue(httpConn)
                            + " if-modified :" + HttpHeaderUtils.getLastModified(httpConn));

            this.httpHeaders.setETag(HttpHeaderUtils.getETagValue(httpConn));
            this.httpHeaders.setIfModifiedSince(HttpHeaderUtils.getLastModified(httpConn));
        }

        ChannelIF channel;
        if (conn == null) {
            channel = FeedParser.parse(getChannelBuilder(), feedUrl);
        } else {
            channel = FeedParser.parse(getChannelBuilder(), conn.getInputStream());
        }

        this.feed.setChannel(channel);
        this.feed.setLastUpdated(new Date());
        this.lastUpdate = System.currentTimeMillis();
        logger.info("feed updated " + feedUrl);
    } catch (IOException | ParseException e) {
        throw new FeedManagerException(e);
    }
}

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From source file:edu.mit.mobile.android.net.DownloadLoader.java

@Override
public Uri loadInBackground() {
    boolean alreadyHasDownload = false;

    if (!outdir.exists() && !outdir.mkdirs()) {
        mException = new IOException("could not mkdirs: " + outdir.getAbsolutePath());
        return null;
    }//ww  w  . j  a  v a 2  s  .  c  o m
    final String fname = mUrl.substring(mUrl.lastIndexOf('/'));
    final File outfile = new File(outdir, fname);

    alreadyHasDownload = outfile.exists() && outfile.length() > MINIMUM_REASONABLE_VIDEO_SIZE;

    final long lastModified = outfile.exists() ? outfile.lastModified() : 0;

    try {
        final NetworkInfo netInfo = mCm.getActiveNetworkInfo();
        if (netInfo == null || !netInfo.isConnected()) {
            // no connection, but there's already a file. Hopefully it works!
            if (alreadyHasDownload) {
                return Uri.fromFile(outfile);
            } else {
                mException = new IOException(getContext().getString(R.string.err_no_data_connection));
                return null;
            }
        }

        HttpURLConnection hc = (HttpURLConnection) new URL(mUrl).openConnection();

        hc.setInstanceFollowRedirects(true);

        if (lastModified != 0) {
            hc.setIfModifiedSince(lastModified);
        }

        int resp = hc.getResponseCode();

        if (resp >= 300 && resp < 400) {

            final String redirectUrl = hc.getURL().toExternalForm();

            if (BuildConfig.DEBUG) {
                Log.d(TAG, "following redirect to " + redirectUrl);
            }
            hc = (HttpURLConnection) new URL(redirectUrl).openConnection();

            if (lastModified != 0) {
                hc.setIfModifiedSince(lastModified);
            }
            resp = hc.getResponseCode();
        }

        if (resp != HttpStatus.SC_OK && resp != HttpStatus.SC_NOT_MODIFIED) {
            Log.e(TAG, "got a non-200 response from server");
            mException = new NetworkProtocolException("Received " + resp + " response from server");
            return null;
        }
        if (resp == HttpStatus.SC_NOT_MODIFIED) {
            if (Constants.DEBUG) {
                Log.d(TAG, "got NOT MODIFIED");
            }
            // verify the integrity of the file
            if (alreadyHasDownload) {
                if (Constants.DEBUG) {
                    Log.d(TAG, fname + " has not been modified since it was downloaded last");
                }
                return Uri.fromFile(outfile);
            } else {
                // re-request without the if-modified header. This shouldn't happen.
                hc = (HttpURLConnection) new URL(mUrl).openConnection();
                final int responseCode = hc.getResponseCode();
                if (responseCode != HttpStatus.SC_OK) {
                    Log.e(TAG, "got a non-200 response from server");
                    mException = new NetworkProtocolException(
                            "Received " + responseCode + " response from server");
                    return null;
                }
            }
        }

        final int contentLength = hc.getContentLength();

        if (contentLength == 0) {
            Log.e(TAG, "got an empty response from server");
            mException = new IOException("Received an empty response from server.");
            return null;

        } else if (contentLength < MINIMUM_REASONABLE_VIDEO_SIZE) { // this is probably not a
                                                                    // video
            Log.e(TAG, "got a very small response from server of length " + hc.getContentLength());
            mException = new IOException("Received an unusually-small response from server.");
            return null;
        }
        boolean downloadSucceeded = false;
        try {

            final BufferedInputStream bis = new BufferedInputStream(hc.getInputStream());
            final FileOutputStream fos = new FileOutputStream(outfile);
            if (Constants.DEBUG) {
                Log.d(TAG, "downloading...");
            }
            StreamUtils.inputStreamToOutputStream(bis, fos);

            fos.close();

            // store the server's last modified date in the filesystem
            outfile.setLastModified(hc.getLastModified());

            downloadSucceeded = true;
            if (Constants.DEBUG) {
                Log.d(TAG, "done! Saved to " + outfile);
            }
            return Uri.fromFile(outfile);

        } finally {
            hc.disconnect();
            // cleanup if this is the first attempt to download
            if (!alreadyHasDownload && !downloadSucceeded) {
                outfile.delete();
            }
        }
    } catch (final IOException e) {
        Log.e(TAG, "error downloading file", e);
        mException = e;
        return null;
    }
}

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