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:org.dataconservancy.dcs.util.droid.DroidSignatureFileManager.java

/**
 * Checks if the url of the of the file exists and then downloads it to the provided file if it does.
 * @param fileUrl The url of the file to retrieve.
 * @param signatureFile The file object that should be used to store the contents of the file at the url.
 * @return True if the url was found and the contents were able to be stored in the file, false otherwise.
 *///from w  w  w  .  ja va2  s .c o  m
private boolean downloadLatestFile(URL fileUrl, File signatureFile) {
    boolean fileRetrieved = true;
    log.info("Attempting to download droid file: " + fileUrl);
    String contentType = "";
    try {
        HttpURLConnection connection = (HttpURLConnection) fileUrl.openConnection();
        connection.setInstanceFollowRedirects(false);
        connection.setRequestMethod("GET");
        connection.connect();
        contentType = connection.getHeaderField("Content-Type");
    } catch (IOException e) {
        fileRetrieved = false;
        log.error("Error connection to file url: " + fileUrl + " Exception: " + e.getMessage());
    }

    if (fileRetrieved) {
        //National Archives website returns 200 even if the url doesn't exist, so check to make sure the content type is xml and not html
        if (contentType.equalsIgnoreCase("text/xml")) {
            try {
                FileUtils.copyURLToFile(fileUrl, signatureFile);
            } catch (IOException e) {
                fileRetrieved = false;
                log.error("Error connection to file url: " + fileUrl + " Exception: " + e.getMessage());
            }
            log.info("Successfully downloaded droid file: " + fileUrl);
        } else {
            fileRetrieved = false;
        }
    }
    return fileRetrieved;
}

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From source file:com.baasbox.android.HttpUrlConnectionClient.java

private HttpURLConnection openConnection(String urlString) throws BaasIOException, IOException {
    URL url = null;/*from   w  w  w. jav  a2  s  .  c  o m*/
    try {
        url = new URL(urlString);
    } catch (MalformedURLException e) {
        throw new BaasIOException("Error while parsing url " + urlString, e);
    }
    HttpURLConnection connection = (HttpURLConnection) url.openConnection();
    connection.setConnectTimeout(config.httpConnectionTimeout);
    connection.setReadTimeout(config.httpSocketTimeout);
    connection.setInstanceFollowRedirects(true);
    connection.setDoInput(true);

    return connection;
}

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From source file:com.wisc.cs407project.ImageLoader.ImageLoader.java

private Bitmap getBitmap(String url) {
    File f = fileCache.getFile(url);
    Bitmap b = decodeFile(f);/*www  .  j a v  a 2 s .com*/

    //from Local Directory
    BufferedReader in = null;
    UrlValidator validator = new UrlValidator();
    if (new File(url).exists()) {
        b = decodeFile(new File(url));
        if (b != null)
            return b;
    }

    //from web
    try {
        //check SD cache first
        if (b != null)
            return b;

        Bitmap bitmap = null;
        URL imageUrl = new URL(url);
        HttpURLConnection conn = (HttpURLConnection) imageUrl.openConnection();
        conn.setConnectTimeout(30000);
        conn.setReadTimeout(30000);
        conn.setInstanceFollowRedirects(true);
        InputStream is = conn.getInputStream();
        OutputStream os = new FileOutputStream(f);
        Utils.CopyStream(is, os);
        os.close();
        conn.disconnect();
        bitmap = decodeFile(f);
        return bitmap;
    } catch (Throwable ex) {
        ex.printStackTrace();
        if (ex instanceof OutOfMemoryError)
            memoryCache.clear();
        return null;
    }
}

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From source file:technology.tikal.accounts.dao.rest.SessionDaoRest.java

private void guardar(UserSession objeto, int intento) {
    //basic auth string
    String basicAuthString = config.getUser() + ":" + config.getPassword();
    basicAuthString = new String(Base64.encodeBase64(basicAuthString.getBytes()));
    basicAuthString = "Basic " + basicAuthString;

    //mensaje remoto
    try {/*  w w  w .  j  a v a 2s .co m*/
        //config
        URL url = new URL(config.getUrl());
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        connection.setDoOutput(true);
        connection.setRequestMethod(config.getMethod());
        connection.setRequestProperty("Content-Type", "application/json");
        connection.setRequestProperty("Authorization", basicAuthString);
        connection.setInstanceFollowRedirects(false);
        //write
        OutputStreamWriter writer = new OutputStreamWriter(connection.getOutputStream());
        writer.write(mapper.writeValueAsString(objeto));
        //close
        writer.close();
        if (connection.getResponseCode() == HttpURLConnection.HTTP_CREATED) {
            return;
        } else {
            throw new MessageSourceResolvableException(new DefaultMessageSourceResolvable(
                    new String[] { "SessionCreationRefused.SessionDaoRest.guardar" },
                    new String[] { connection.getResponseCode() + "" }, ""));
        }
    } catch (MalformedURLException e) {
        throw new RuntimeException(e);
    } catch (IOException e) {
        if (intento <= maxRetry) {
            this.guardar(objeto, intento + 1);
        } else {
            throw new MessageSourceResolvableException(new DefaultMessageSourceResolvable(
                    new String[] { "SessionCreationError.SessionDaoRest.guardar" },
                    new String[] { e.getMessage() }, ""));
        }
    }
}

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From source file:com.commsen.jwebthumb.WebThumbService.java

/**
 * Helper method used to actually send {@link WebThumb} request and check for common errors.
 * //from w w w  .  j  a v a 2  s  .  c o  m
 * @param webThumb the request to send
 * @return connection to extract the response from
 * @throws WebThumbException if any error occurs
 */
private HttpURLConnection sendWebThumb(WebThumb webThumb) throws WebThumbException {
    try {
        HttpURLConnection connection = (HttpURLConnection) new URL(WEB_THUMB_URL).openConnection();
        connection.setInstanceFollowRedirects(false);
        connection.setDoOutput(true);
        connection.setRequestMethod("POST");

        SimpleXmlSerializer.generateRequest(webThumb, connection.getOutputStream());

        int responseCode = connection.getResponseCode();
        String contentType = getContentType(connection);
        if (LOGGER.isLoggable(Level.FINE)) {
            LOGGER.fine("Request sent! Got response: " + responseCode + " " + connection.getResponseMessage());
            LOGGER.fine("Response content type: " + contentType);
            LOGGER.fine("Response content encoding: " + connection.getContentEncoding());
            LOGGER.fine("Response content length: " + connection.getContentLength());
        }

        if (responseCode == HttpURLConnection.HTTP_OK) {
            if (CONTENT_TYPE_TEXT_PLAIN.equals(contentType)) {
                throw new WebThumbException(
                        "Server side error: " + IOUtils.toString(connection.getInputStream()));
            }
            if (!CONTENT_TYPE_TEXT_XML.equals(contentType)) {
                throw new WebThumbException("Unknown content type in response: " + contentType);
            }
            return connection;
        } else {
            throw new WebThumbException("Server side error: " + connection.getResponseCode() + ") "
                    + connection.getResponseMessage());
        }
    } catch (MalformedURLException e) {
        throw new WebThumbException("failed to send request", e);
    } catch (IOException e) {
        throw new WebThumbException("failed to send request", e);
    }
}

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From source file:org.callimachusproject.test.WebResource.java

public int headCode() throws IOException {
    HttpURLConnection con = (HttpURLConnection) new URL(uri).openConnection();
    con.setInstanceFollowRedirects(false);
    con.setRequestMethod("HEAD");
    return con.getResponseCode();
}

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From source file:gov.whitehouse.services.LiveService.java

private boolean updateEvents() {
    try {//from ww w.j a va  2  s.  com
        HttpURLConnection conn = (HttpURLConnection) new URL(mFeedUrl).openConnection();
        InputStream in;
        int status;

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

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

        if (status < 400 && status != 304) {
            /* We should be good to go */
            SAXParser parser = SAXParserFactory.newInstance().newSAXParser();
            FeedHandler handler = new FeedHandler();
            parser.parse(in, handler);

            /*
             * Cycle through the received events and make sure they're all valid.
             */
            ArrayList<FeedItem> validLiveEvents = new ArrayList<FeedItem>();
            for (FeedItem item : handler.getFeedItems()) {
                if (item != null && item.getPubDate() != null) {
                    validLiveEvents.add(item);
                }
            }

            mLiveEvents = validLiveEvents;
        }

        conn.disconnect();

        return status < 400;
    } catch (SAXException e) {
        Log.d(TAG, "failed to parse XML");
        Log.d(TAG, Log.getStackTraceString(e));
    } 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 (ParserConfigurationException e) {
        Log.d(TAG, "this should not happen");
        Log.d(TAG, Log.getStackTraceString(e));
    }

    return false;
}

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From source file:org.callimachusproject.test.WebResource.java

public String getRedirectLocation() throws IOException {
    HttpURLConnection con = (HttpURLConnection) new URL(uri).openConnection();
    con.setInstanceFollowRedirects(false);
    con.setRequestMethod("HEAD");
    int code = con.getResponseCode();
    if (!(code == 301 || code == 303 || code == 302 || code == 307 || code == 308))
        Assert.assertEquals(con.getResponseMessage(), 302, code);
    return con.getHeaderField("Location");
}

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From source file:zoho.ZohoService.java

/**
 * Add a new log// ww  w.ja  va  2s  . com
 * @param token User token
 * @param url url of the log
 * @param note Notes
 * @param date Date
 * @param bill Bill status
 * @param hour Total hour
 * @return response code or -1 if error
 */
public int addLog(String token, String url, String note, String date, String bill, String hour) {
    int res = -1;
    try {
        String urlParam = "date=" + date + "&bill_status=" + bill + "&hours=" + hour;
        urlParam += "&notes=" + note + "&authtoken=" + token;
        byte[] postData = urlParam.getBytes(StandardCharsets.UTF_8);
        int postDataLength = postData.length;
        URL obj = new URL(url);
        HttpURLConnection con = (HttpURLConnection) obj.openConnection();
        con.setDoOutput(true);
        con.setInstanceFollowRedirects(false);
        con.setRequestMethod("POST");
        con.setRequestProperty("User-Agent", "Mozilla/40.0");
        con.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
        con.setRequestProperty("charset", "utf-8");
        con.setRequestProperty("Content-Length", Integer.toString(postDataLength));
        con.setUseCaches(false);

        try (DataOutputStream wr = new DataOutputStream(con.getOutputStream())) {
            wr.write(postData);
        }
        int responseCode = con.getResponseCode();
        System.out.println("Response code " + responseCode);
        BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream()));
        String inputLine;
        StringBuffer response = new StringBuffer();

        while ((inputLine = in.readLine()) != null) {
            response.append(inputLine);
        }
        in.close();
        res = responseCode;
    } catch (MalformedURLException ex) {
        Logger.getLogger(ZohoService.class.getName()).log(Level.SEVERE, null, ex);
    } catch (IOException ex) {
        Logger.getLogger(ZohoService.class.getName()).log(Level.SEVERE, null, ex);
    } catch (Exception e) {
        System.out.println("Some error occured... Please come back later.. :(");
    }
    return res;
}

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From source file:com.commsen.jwebthumb.WebThumbService.java

private HttpURLConnection getFetchConnection(WebThumbFetchRequest webThumbFetchRequest)
        throws WebThumbException {
    Validate.notNull(webThumbFetchRequest, "webThumbFetchRequest is null!");
    if (LOGGER.isLoggable(Level.FINE)) {
        LOGGER.fine("Attempting to send webThumbFetchRequest: " + webThumbFetchRequest);
    }/* w  ww . ja v a 2  s .  c om*/
    WebThumb webThumb = new WebThumb(apikey, webThumbFetchRequest);

    try {
        HttpURLConnection connection = (HttpURLConnection) new URL(WEB_THUMB_URL).openConnection();
        connection.setInstanceFollowRedirects(false);
        connection.setDoOutput(true);
        connection.setRequestMethod("POST");

        SimpleXmlSerializer.generateRequest(webThumb, connection.getOutputStream());

        int responseCode = connection.getResponseCode();
        String contentType = getContentType(connection);
        if (LOGGER.isLoggable(Level.FINE)) {
            LOGGER.fine("webThumbFetchRequest sent. Got response: " + responseCode + " "
                    + connection.getResponseMessage());
            LOGGER.fine("Content type: " + contentType);
        }

        if (responseCode == HttpURLConnection.HTTP_OK) {
            if (CONTENT_TYPE_TEXT_PLAIN.equals(contentType)) {
                throw new WebThumbException(
                        "Server side error: " + IOUtils.toString(connection.getInputStream()));
            }
            return connection;
        } else if (responseCode == HttpURLConnection.HTTP_INTERNAL_ERROR) {
            WebThumbResponse webThumbResponse = SimpleXmlSerializer.parseResponse(connection.getErrorStream(),
                    WebThumbResponse.class);
            throw new WebThumbException("Server side error: " + webThumbResponse.getError().getValue());
        } else {
            throw new WebThumbException("Server side error: " + connection.getResponseCode() + " "
                    + connection.getResponseMessage());
        }

    } catch (MalformedURLException e) {
        throw new WebThumbException("failed to send request", e);
    } catch (IOException e) {
        throw new WebThumbException("failed to send request", e);
    }

}

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