Example usage for java.net URLConnection getContentType

List of usage examples for java.net URLConnection getContentType

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Introduction

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

Prototype

public String getContentType()

Source Link

Document

Returns the value of the content-type header field.

Usage

From source file:ddf.catalog.source.opensearch.SecureRemoteConnectionImpl.java

@Override
public BinaryContent getData(String urlStr) throws IOException {
    URL url = new URL(urlStr);
    URLConnection conn = url.openConnection();
    if (conn instanceof HttpsURLConnection) {
        try {//www .  j  a  v  a 2 s . c  o m
            ((HttpsURLConnection) conn).setSSLSocketFactory(getSocketFactory());
        } catch (Exception e) {
            throw new IOException("Error in creating SSL socket.", e);
        }
    }
    conn.connect();
    MimeType mimeType = DEFAULT_MIMETYPE;
    try {
        mimeType = new MimeType(conn.getContentType());
    } catch (MimeTypeParseException e) {
        LOGGER.debug("Error creating mime type with input [" + conn.getContentType() + "], defaulting to "
                + DEFAULT_MIMETYPE.toString());
    }
    return new BinaryContentImpl(conn.getInputStream(), mimeType);
}

From source file:org.inbio.neoportal.web.controller.ProxyController.java

@RequestMapping(value = "*", method = RequestMethod.GET)
public @ResponseBody void getUrlContent(@RequestParam String url, HttpServletResponse response)
        throws IOException {
    try {/*w  ww. j ava 2 s. co  m*/

        //debug
        Logger.getLogger(ProxyController.class.getName()).log(Level.INFO, "Inica carga url: {0}", url);

        //Inicia llamada al url
        URL urlObj = new URL(url);
        URLConnection conn = urlObj.openConnection();

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

        HttpURLConnection httpUrl = (HttpURLConnection) conn;

        //            httpUrl.setDoInput(true);
        //            httpUrl.setDoOutput(false);

        if (httpUrl.getResponseCode() == 200) {

            //obtiene la respuesta
            InputStream is = null;
            is = conn.getInputStream();

            //modifica el content type
            response.setContentType(conn.getContentType());

            IOUtils.copy(is, response.getOutputStream());

        } else
            response.setStatus(httpUrl.getResponseCode());

        //httpUrl.

    } catch (SocketException ex) {
        //problema para traer los datos
        Logger.getLogger(ProxyController.class.getName()).log(Level.SEVERE, null, ex);

    } catch (Exception ex) {
        Logger.getLogger(ProxyController.class.getName()).log(Level.SEVERE, null, ex);
    }
}

From source file:com.servoy.extension.MarketPlaceExtensionProvider.java

private String[] ws_getVersions(String extensionId) {
    ArrayList<String> versions = new ArrayList<String>();

    ByteArrayOutputStream bos = null;
    BufferedInputStream bis = null;
    try {/*from  w w  w .ja  va 2  s.co  m*/
        URLConnection ws_connection = ws_getConnection(WS_ACTION_VERSIONS, "text/json", extensionId, null); //$NON-NLS-1$
        bos = new ByteArrayOutputStream();
        bis = new BufferedInputStream(ws_connection.getInputStream());
        byte[] buffer = new byte[1024];
        int len;
        while ((len = bis.read(buffer)) != -1)
            bos.write(buffer, 0, len);

        String encoding = getCharset(ws_connection.getContentType());
        if (encoding == null)
            encoding = "UTF-8"; //$NON-NLS-1$
        JSONArray jsonVersions = new JSONArray(new String(bos.toByteArray(), encoding));
        for (int i = 0; i < jsonVersions.length(); i++)
            versions.add(jsonVersions.getString(i));

    } catch (Exception ex) {
        String msg = "Cannot get extension versions from marketplace. Error is : " + ex.getMessage(); //$NON-NLS-1$
        Debug.error(ex);
        messages.addError(msg);
    } finally {
        Utils.closeInputStream(bis);
        Utils.closeOutputStream(bos);
    }

    return versions.toArray(new String[versions.size()]);
}

From source file:org.apache.synapse.registry.url.SimpleURLRegistry.java

public RegistryEntry getRegistryEntry(String key) {

    if (log.isDebugEnabled()) {
        log.debug("Perform RegistryEntry lookup for key : " + key);
    }//from  www.java  2  s .c o  m
    URL url = SynapseConfigUtils.getURLFromPath(root + key,
            properties.get(SynapseConstants.SYNAPSE_HOME) != null
                    ? properties.get(SynapseConstants.SYNAPSE_HOME).toString()
                    : "");
    if (url == null) {
        return null;
    }
    URLConnection connection = SynapseConfigUtils.getURLConnection(url);
    if (connection == null) {
        if (log.isDebugEnabled()) {
            log.debug("Cannot create a URLConnection for given URL : " + url);
        }
        return null;
    }

    RegistryEntryImpl wre = new RegistryEntryImpl();
    wre.setKey(key);
    wre.setName(url.getFile());
    wre.setType(connection.getContentType());
    wre.setDescription("Resource at : " + url.toString());
    wre.setLastModified(connection.getLastModified());
    wre.setVersion(connection.getLastModified());
    if (connection.getExpiration() > 0) {
        wre.setCachableDuration(connection.getExpiration() - System.currentTimeMillis());
    } else {
        wre.setCachableDuration(getCachableDuration());
    }
    return wre;
}

From source file:net.ontopia.topicmaps.utils.tmrap.RemoteTopicIndex.java

protected InputSource getInputSource(String method, String params, boolean compress) throws IOException {

    String baseuri = viewBaseuri == null ? editBaseuri : viewBaseuri;
    String url = baseuri + method + "?" + params;
    URLConnection conn = this.getConnection(url, 0);
    InputSource src = new InputSource(url);

    if (!compress) {
        src.setByteStream(conn.getInputStream());

        String ctype = conn.getContentType();
        if (ctype != null && ctype.startsWith("text/xml")) {
            int pos = ctype.indexOf("charset=");
            if (pos != -1)
                src.setEncoding(ctype.substring(pos + 8));
        }/* w  w w .  j av a  2  s .c om*/
    } else
        src.setByteStream(new java.util.zip.GZIPInputStream(conn.getInputStream()));

    return src;
}

From source file:org.apache.cocoon.generation.LinkStatusGenerator.java

/**
 * Retrieve a list of links of a url/*from  www .j  av a 2 s  . c  om*/
 *
 * @param url_link_string url for requesting links, it is assumed that
 *   url_link_string queries the cocoon view links, ie of the form
 *   <code>http://host/foo/bar?cocoon-view=links</code>
 * @param url_of_referrer base url of which links are requested, ie of the form
 *   <code>http://host/foo/bar</code>
 * @return List of links from url_of_referrer, as result of requesting url
 *   url_link_string
 */
protected List getLinksFromConnection(String url_link_string, URL url_of_referrer) {
    List url_links = null;
    BufferedReader br = null;
    try {
        URL url_link = new URL(url_link_string);
        URLConnection conn = url_link.openConnection();
        String content_type = conn.getContentType();

        if (content_type == null) {
            getLogger().warn("No content type available for " + String.valueOf(url_link_string));
            // caller checks if null
            return url_links;
        }

        if (getLogger().isDebugEnabled()) {
            getLogger().debug("Content-type: " + content_type);
        }

        if (content_type.equals(linkContentType) || content_type.startsWith(linkContentType + ";")) {
            url_links = new ArrayList();

            InputStream is = conn.getInputStream();
            br = new BufferedReader(new InputStreamReader(is));

            // content is supposed to be a list of links,
            // relative to current URL
            String line;
            String referrer = url_of_referrer.toString();

            while ((line = br.readLine()) != null) {
                URL new_url = new URL(url_link, line);
                boolean add_url = true;
                // don't add new_url twice
                if (add_url) {
                    add_url &= !url_links.contains(new_url);
                }

                // don't add new_url if it has been crawled already
                if (add_url) {
                    add_url &= !crawled.contains(new_url.toString());
                }

                Link new_link = new Link(new_url, referrer);
                if (add_url) {
                    add_url &= !linksToProcess.contains(new_link);
                }

                // don't add if is not matched by existing include definition
                if (add_url) {
                    add_url &= isIncludedURL(new_url.toString());
                }

                if (add_url) {
                    if (getLogger().isDebugEnabled()) {
                        getLogger().debug("Add URL: " + new_url.toString());
                    }
                    url_links.add(new_link);
                }
            }
            // now we have a list of URL which should be examined
        }
    } catch (IOException ioe) {
        getLogger().warn("Problems get links of " + url_link_string, ioe);
    } finally {
        // explictly close the stream
        if (br != null) {
            try {
                br.close();
                br = null;
            } catch (IOException ignored) {
            }
        }
    }
    return url_links;
}

From source file:org.apache.cocoon.generation.LinkStatusGenerator.java

/**
 * Generate xml attributes of a url, calculate url for retrieving links
 *
 * @param url to process/*from www.  j  a v a  2s.co  m*/
 * @param referrer of the url
 * @return String url for retrieving links, or null if url is an excluded-url,
 *   and not an included-url.
 */
protected String processURL(URL url, String referrer) throws SAXException {

    if (getLogger().isDebugEnabled()) {
        getLogger().debug("getLinks URL " + url);
    }

    String result = null;

    // don't try to investigate a url which has been crawled already
    if (crawled.contains(url.toString())) {
        return null;
    }

    // mark it as crawled
    crawled.add(url.toString());

    attributes.clear();
    attributes.addAttribute("", HREF_ATTR_NAME, HREF_ATTR_NAME, "CDATA", url.toString());
    attributes.addAttribute("", REFERRER_ATTR_NAME, REFERRER_ATTR_NAME, "CDATA", referrer);

    // Output url, referrer, content-type, status, message for traversable url's
    HttpURLConnection h = null;
    try {

        URLConnection links_url_connection = url.openConnection();
        h = (HttpURLConnection) links_url_connection;
        String content_type = links_url_connection.getContentType();

        attributes.addAttribute("", CONTENT_ATTR_NAME, CONTENT_ATTR_NAME, "CDATA", content_type);

        attributes.addAttribute("", MESSAGE_ATTR_NAME, MESSAGE_ATTR_NAME, "CDATA", h.getResponseMessage());

        attributes.addAttribute("", STATUS_ATTR_NAME, STATUS_ATTR_NAME, "CDATA",
                String.valueOf(h.getResponseCode()));
    } catch (IOException ioe) {
        attributes.addAttribute("", MESSAGE_ATTR_NAME, MESSAGE_ATTR_NAME, "CDATA", ioe.getMessage());
    } finally {
        if (h != null) {
            h.disconnect();
        }
    }

    // don't try to get links of a url which is excluded from crawling
    // try to get links of a url which is included for crawling
    if (!isExcludedURL(url.toString()) && isIncludedURL(url.toString())) {
        // add prefix and query to get data from the linkserializer.
        result = url.toExternalForm() + ((url.toExternalForm().indexOf("?") == -1) ? "?" : "&") + linkViewQuery;
    }

    super.contentHandler.startElement(URI, LINK_NODE_NAME, PREFIX + ':' + LINK_NODE_NAME, attributes);
    super.contentHandler.endElement(URI, LINK_NODE_NAME, PREFIX + ':' + LINK_NODE_NAME);

    return result;
}

From source file:it.polito.tellmefirst.web.rest.clients.ClientEpub.java

private Boolean urlIsEpub(String url) {

    LOG.debug("[checkURL] - BEGIN");

    Boolean isEpub = false;//from w ww.j a  v  a 2  s . c  o m
    URL epubUrl;
    String type;

    try {
        epubUrl = new URL(url);
        URLConnection urlConnection = epubUrl.openConnection();
        type = urlConnection.getContentType();
        if (type.equals("application/epub+zip"))
            isEpub = true;
    } catch (MalformedURLException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }

    LOG.debug("[checkURL] - END");

    return isEpub;

}

From source file:com.google.android.dialer.provider.DialerProvider.java

private String executeHttpRequest(Uri uri) throws IOException {
    String charset = null;/*from  w w  w  .  ja  va  2 s.com*/

    if (Log.isLoggable("DialerProvider", Log.VERBOSE)) {
        Log.v("DialerProvider", "executeHttpRequest(" + uri + ")");
    }

    try {
        URLConnection conn = new URL(uri.toString()).openConnection();
        conn.setRequestProperty("User-Agent", mUserAgent);

        InputStream inputStream = conn.getInputStream();
        charset = getCharsetFromContentType(conn.getContentType());

        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();

        byte[] buf = new byte[1000];
        while (true) {
            int len = inputStream.read(buf);
            if (len <= 0) {
                break;
            }
            outputStream.write(buf, 0, len);
        }

        inputStream.close();
        outputStream.flush();

        return new String(outputStream.toByteArray(), charset);
    } catch (UnsupportedEncodingException e) {
        Log.w("DialerProvider", "Invalid charset: " + charset, e);
    } catch (IOException e) {
        // TODO: Didn't find anything that goes here in byte-code
    }

    // TODO: Is this appropriate?
    return null;
}

From source file:org.y20k.transistor.helpers.MetadataHelper.java

private void shoutcastProxyReaderLoop(Socket proxy, URLConnection connection) throws IOException {

    connection.setConnectTimeout(5000);/*from   w  ww.  j  a v  a2  s  .com*/
    connection.setReadTimeout(5000);
    connection.setRequestProperty("Icy-MetaData", "1");
    connection.connect();

    InputStream in = connection.getInputStream();

    OutputStream out = proxy.getOutputStream();
    out.write(("HTTP/1.0 200 OK\r\n" + "Pragma: no-cache\r\n" + "Content-Type: " + connection.getContentType()
            + "\r\n\r\n").getBytes(StandardCharsets.UTF_8));

    byte buf[] = new byte[16384]; // one second of 128kbit stream
    int count = 0;
    int total = 0;
    int metadataSize = 0;
    final int metadataOffset = connection.getHeaderFieldInt("icy-metaint", 0);
    int bitRate = Math.max(connection.getHeaderFieldInt("icy-br", 128), 32);
    LogHelper.v(LOG_TAG,
            "createProxyConnection: connected, icy-metaint " + metadataOffset + " icy-br " + bitRate);
    while (true) {
        count = Math.min(in.available(), buf.length);
        if (count <= 0) {
            count = Math.min(bitRate * 64, buf.length); // buffer half-second of stream data
        }
        if (metadataOffset > 0) {
            count = Math.min(count, metadataOffset - total);
        }

        count = in.read(buf, 0, count);
        if (count == 0) {
            continue;
        }
        if (count < 0) {
            break;
        }

        out.write(buf, 0, count);

        total += count;
        if (metadataOffset > 0 && total >= metadataOffset) {
            // read metadata
            total = 0;
            count = in.read();
            if (count < 0) {
                break;
            }
            count *= 16;
            metadataSize = count;
            if (metadataSize == 0) {
                continue;
            }
            // maximum metadata length is 4080 bytes
            total = 0;
            while (total < metadataSize) {
                count = in.read(buf, total, count);
                if (count < 0) {
                    break;
                }
                if (count == 0) {
                    continue;
                }
                total += count;
                count = metadataSize - total;
            }
            total = 0;
            String[] metadata = new String(buf, 0, metadataSize, StandardCharsets.UTF_8).split(";");
            for (String s : metadata) {
                if (s.indexOf(TransistorKeys.SHOUTCAST_STREAM_TITLE_HEADER) == 0
                        && s.length() >= TransistorKeys.SHOUTCAST_STREAM_TITLE_HEADER.length() + 1) {
                    handleMetadataString(
                            s.substring(TransistorKeys.SHOUTCAST_STREAM_TITLE_HEADER.length(), s.length() - 1));
                    // break;
                }
            }
        }
    }
}