Example usage for java.net HttpURLConnection disconnect

Introduction

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

Prototype

public abstract void disconnect();

Source Link

Document

Indicates that other requests to the server are unlikely in the near future.

Usage

From source file:lu.list.itis.dkd.aig.util.FusekiHttpHelper.java

/**
 * Check if specified dataset already exists on server
 * /*from w  w  w.j  a  va2  s  . c om*/
 * @param dataSetName
 * @return boolean true if the dataset already exits, false if not
 * @throws IOException
 * @throws HttpException
 */
public static boolean chechIfExist(String dataSetName) throws IOException, HttpException {
    boolean exists = false;
    URL url = new URL(HOST + "/$/datasets/" + dataSetName);
    final HttpURLConnection httpConnection = (HttpURLConnection) url.openConnection();
    httpConnection.setUseCaches(false);
    httpConnection.setRequestMethod("GET");

    // handle HTTP/HTTPS strange behaviour
    httpConnection.connect();
    httpConnection.disconnect();

    // handle response
    switch (httpConnection.getResponseCode()) {
    case HttpURLConnection.HTTP_OK:
        exists = true;
        break;
    case HttpURLConnection.HTTP_NOT_FOUND:
        break;
    default:
        throw new HttpException(
                httpConnection.getResponseCode() + " message: " + httpConnection.getResponseMessage());
    }
    return exists;
}

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From source file:Main.java

/**
 * Send the Http's request with the address of url
 * @param String url//ww  w. jav a  2  s.c  om
 * @return String
 */
public static String getHttpRequest(String url) {
    //should use the StringBuilder or StringBuffer, String is not used.
    StringBuffer jsonContent = new StringBuffer();
    try {
        URL getUrl = new URL(url);
        HttpURLConnection connection = (HttpURLConnection) getUrl.openConnection();
        connection.connect();
        //Getting the inputting stream, and then read the stream.
        BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
        String lines = "";
        while ((lines = reader.readLine()) != null) {
            jsonContent.append(lines);
        }
        reader.close();
        connection.disconnect();
    } catch (Exception e) {
        e.printStackTrace();
    }
    //ScanningActivity.log("getHttpRequest(): " + content);
    //BooksPutIn.log("getHttpRequest(): " + content);
    return jsonContent.toString();
}

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From source file:Main.java

/**
 * Given a string url, connects and returns response code
 *
 * @param urlString       string to fetch
 * @param readTimeOutMs       read time out
 * @param connectionTimeOutMs       connection time out
 * @param urlRedirect       should use urlRedirect
 * @param useCaches       should use cache
 * @return httpResponseCode http response code
 * @throws IOException/*from  www  . j  av  a2 s  . c o m*/
 */

public static int checkUrlWithOptions(String urlString, int readTimeOutMs, int connectionTimeOutMs,
        boolean urlRedirect, boolean useCaches) throws IOException {
    URL url = new URL(urlString);
    HttpURLConnection connection = (HttpURLConnection) url.openConnection();
    connection.setReadTimeout(readTimeOutMs /* milliseconds */);
    connection.setConnectTimeout(connectionTimeOutMs /* milliseconds */);
    connection.setRequestMethod("GET");
    connection.setInstanceFollowRedirects(urlRedirect);
    connection.setUseCaches(useCaches);
    // Starts the query
    connection.connect();
    int responseCode = connection.getResponseCode();
    connection.disconnect();
    return responseCode;
}

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From source file:Main.java

/**
 * Given a string url, connects and returns response code
 *
 * @param urlString       string to fetch
 * @param network       network/*from w w  w.j  a  va  2s  . c  o m*/
 * @param readTimeOutMs       read time out
 * @param connectionTimeOutMs       connection time out
 * @param urlRedirect       should use urlRedirect
 * @param useCaches       should use cache
 * @return httpResponseCode http response code
 * @throws IOException
 */

@TargetApi(LOLLIPOP)
public static int checkUrlWithOptionsOverNetwork(String urlString, Network network, int readTimeOutMs,
        int connectionTimeOutMs, boolean urlRedirect, boolean useCaches) throws IOException {
    if (network == null) {
        return -1;
    }
    URL url = new URL(urlString);
    HttpURLConnection connection = (HttpURLConnection) network.openConnection(url);
    connection.setReadTimeout(readTimeOutMs /* milliseconds */);
    connection.setConnectTimeout(connectionTimeOutMs /* milliseconds */);
    connection.setRequestMethod("GET");
    connection.setInstanceFollowRedirects(urlRedirect);
    connection.setUseCaches(useCaches);
    // Starts the query
    connection.connect();
    int responseCode = connection.getResponseCode();
    connection.disconnect();
    return responseCode;
}

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From source file:com.jts.rest.profileservice.utils.RestServiceHelper.java

/**
 * Makes a get request to the given url and returns the json object
 * @param sessionId//from w ww  .  ja va 2s . c o  m
 * @param url
 * @return
 * @throws MalformedURLException
 * @throws IOException
 */
public static JSONArray makeGetRequest(String sessionId, String url) throws MalformedURLException, IOException {
    URL endpoint = new URL(url);
    HttpURLConnection urlc = (HttpURLConnection) endpoint.openConnection();
    urlc.setRequestProperty("Authorization", "OAuth " + sessionId);
    urlc.setRequestMethod("GET");
    urlc.setDoOutput(true);
    String output = OauthHelperUtils.readInputStream(urlc.getInputStream());
    urlc.disconnect();
    Object json = JSONValue.parse(output);
    JSONArray jsonArr = (JSONArray) json;
    return jsonArr;
}

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From source file:de.egore911.versioning.deployer.Main.java

private static void perform(String arg, CommandLine line) throws IOException {
    URL url;/* w ww  .j a va 2  s.com*/
    try {
        url = new URL(arg);
    } catch (MalformedURLException e) {
        LOG.error("Invalid URI: {}", e.getMessage(), e);
        System.exit(1);
        return;
    }

    HttpURLConnection connection;
    try {
        connection = (HttpURLConnection) url.openConnection();
        int response = connection.getResponseCode();
        if (response != HttpURLConnection.HTTP_OK) {
            LOG.error("Could not download {}", url);
            connection.disconnect();
            System.exit(1);
            return;
        }
    } catch (ConnectException e) {
        LOG.error("Error during download from URI {}: {}", url, e.getMessage());
        System.exit(1);
        return;
    }

    XmlHolder xmlHolder = XmlHolder.getInstance();
    DocumentBuilder documentBuilder = xmlHolder.documentBuilder;
    XPath xPath = xmlHolder.xPath;

    try {

        XPathExpression serverNameXpath = xPath.compile("/server/name/text()");
        XPathExpression serverTargetdirXpath = xPath.compile("/server/targetdir/text()");
        XPathExpression serverDeploymentsDeploymentXpath = xPath.compile("/server/deployments/deployment");

        Document doc = documentBuilder.parse(connection.getInputStream());
        connection.disconnect();

        String serverName = (String) serverNameXpath.evaluate(doc, XPathConstants.STRING);
        LOG.info("Deploying {}", serverName);

        boolean shouldPerformCopy = !line.hasOption('r');
        PerformCopy performCopy = new PerformCopy(xPath);
        boolean shouldPerformExtraction = !line.hasOption('r');
        PerformExtraction performExtraction = new PerformExtraction(xPath);
        boolean shouldPerformCheckout = !line.hasOption('r');
        PerformCheckout performCheckout = new PerformCheckout(xPath);
        boolean shouldPerformReplacement = true;
        PerformReplacement performReplacement = new PerformReplacement(xPath);

        String targetdir = (String) serverTargetdirXpath.evaluate(doc, XPathConstants.STRING);
        FileUtils.forceMkdir(new File(targetdir));

        NodeList serverDeploymentsDeploymentNodes = (NodeList) serverDeploymentsDeploymentXpath.evaluate(doc,
                XPathConstants.NODESET);
        int max = serverDeploymentsDeploymentNodes.getLength();
        for (int i = 0; i < serverDeploymentsDeploymentNodes.getLength(); i++) {
            Node serverDeploymentsDeploymentNode = serverDeploymentsDeploymentNodes.item(i);

            // Copy
            if (shouldPerformCopy) {
                performCopy.perform(serverDeploymentsDeploymentNode);
            }

            // Extraction
            if (shouldPerformExtraction) {
                performExtraction.perform(serverDeploymentsDeploymentNode);
            }

            // Checkout
            if (shouldPerformCheckout) {
                performCheckout.perform(serverDeploymentsDeploymentNode);
            }

            // Replacement
            if (shouldPerformReplacement) {
                performReplacement.perform(serverDeploymentsDeploymentNode);
            }

            logPercent(i + 1, max);
        }

        // validate that "${versioning:" is not present
        Collection<File> files = FileUtils.listFiles(new File(targetdir), TrueFileFilter.TRUE,
                TrueFileFilter.INSTANCE);
        for (File file : files) {
            String content;
            try {
                content = FileUtils.readFileToString(file);
            } catch (IOException e) {
                continue;
            }
            if (content.contains("${versioning:")) {
                LOG.error("{} contains placeholders even after applying the replacements",
                        file.getAbsolutePath());
            }
        }

        LOG.info("Done deploying {}", serverName);

    } catch (SAXException | IOException | XPathExpressionException e) {
        LOG.error("Error performing deployment: {}", e.getMessage(), e);
    }
}

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From source file:com.rumblefish.friendlymusic.api.WebRequest.java

public static Bitmap getBitmapAtURL(URL url) {
    InputStream inStream = null;/*from w  w  w .ja va2s  . co m*/
    HttpURLConnection _conn = null;
    Bitmap bitmap = null;
    try {

        _conn = (HttpURLConnection) url.openConnection();
        _conn.setDoInput(true);
        _conn.connect();
        inStream = _conn.getInputStream();
        bitmap = BitmapFactory.decodeStream(inStream);
        inStream.close();
        _conn.disconnect();
        inStream = null;
        _conn = null;
    } catch (Exception ex) {
        // nothing
    }
    if (inStream != null) {
        try {
            inStream.close();
        } catch (Exception ex) {
        }
    }
    if (_conn != null) {
        _conn.disconnect();
    }

    return bitmap;
}

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From source file:com.adguard.compiler.UrlUtils.java

public static String downloadString(URL url, String encoding, String userAgent) throws IOException {

    HttpURLConnection connection = null;
    InputStream inputStream = null;

    try {//from  ww  w.  j a va 2s  .c  o m
        connection = (HttpURLConnection) url.openConnection();
        connection.setRequestProperty("User-Agent", userAgent);
        connection.connect();
        inputStream = connection.getInputStream();
        return IOUtils.toString(inputStream, encoding);
    } finally {
        IOUtils.closeQuietly(inputStream);
        if (connection != null) {
            connection.disconnect();
        }
    }
}

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From source file:Main.java

public static long downloadFileFromUrl(String urlPath, File file) {
    long size = 0;
    try {/*  w  ww  . java2 s .c  om*/
        URL url = new URL(urlPath);
        HttpURLConnection httpurlconnection = (HttpURLConnection) url.openConnection();
        BufferedInputStream bufferedinputstream = new BufferedInputStream(httpurlconnection.getInputStream());
        BufferedOutputStream bufferedoutputstream = new BufferedOutputStream(new FileOutputStream(file));
        int i;
        while ((i = bufferedinputstream.read()) != -1) {
            bufferedoutputstream.write(i);
        }
        bufferedinputstream.close();
        bufferedoutputstream.close();
        httpurlconnection.disconnect();
        size = file.length();
    } catch (Exception e) {
        e.printStackTrace();
    }
    return size;
}

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From source file:com.ibuildapp.romanblack.CataloguePlugin.imageloader.Utils.java

public static String downloadFile(Context context, String url, String md5) {
    final int BYTE_ARRAY_SIZE = 8024;
    final int CONNECTION_TIMEOUT = 30000;
    final int READ_TIMEOUT = 30000;

    try {//  ww  w  .ja v a 2s.c o  m
        for (int i = 0; i < 3; i++) {
            URL fileUrl = new URL(URLDecoder.decode(url));
            HttpURLConnection connection = (HttpURLConnection) fileUrl.openConnection();
            connection.setConnectTimeout(CONNECTION_TIMEOUT);
            connection.setReadTimeout(READ_TIMEOUT);
            connection.connect();

            int status = connection.getResponseCode();

            if (status >= HttpStatus.SC_BAD_REQUEST) {
                connection.disconnect();

                continue;
            }

            BufferedInputStream bufferedInputStream = new BufferedInputStream(connection.getInputStream());
            File file = new File(StaticData.getCachePath(context) + md5);

            if (!file.exists()) {
                new File(StaticData.getCachePath(context)).mkdirs();
                file.createNewFile();
            }

            FileOutputStream fileOutputStream = new FileOutputStream(file, false);
            int byteCount;
            byte[] buffer = new byte[BYTE_ARRAY_SIZE];

            while ((byteCount = bufferedInputStream.read(buffer, 0, BYTE_ARRAY_SIZE)) != -1)
                fileOutputStream.write(buffer, 0, byteCount);

            bufferedInputStream.close();
            fileOutputStream.flush();
            fileOutputStream.close();

            return file.getAbsolutePath();
        }
    } catch (Exception e) {
        e.printStackTrace();

        return null;
    }

    return null;
}

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