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:com.google.api.ads.adwords.awreporting.server.appengine.exporter.ReportExporterAppEngine.java

public static void html2PdfOverNet(InputStream htmlSource, ReportWriter reportWriter) {
    try {/*  w  ww .j  av a  2s. c om*/
        URL url = new URL(HTML_2_PDF_SERVER_URL);
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        connection.setDoOutput(true);
        connection.setDoInput(true);
        connection.setInstanceFollowRedirects(false);
        connection.setRequestMethod("POST");
        connection.setRequestProperty("Content-Type", "text/html");
        connection.setRequestProperty("charset", "utf-8");
        connection.setUseCaches(false);

        DataOutputStream send = new DataOutputStream(connection.getOutputStream());
        send.write(IOUtils.toByteArray(htmlSource));
        send.flush();

        // Read from connection
        reportWriter.write(connection.getInputStream());

        send.close();

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

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From source file:com.gson.util.HttpKit.java

/**
 * /*from   w w w  .j av a  2s  .com*/
 * @description 
 * ??: get 
 * @return       : 
 * @throws IOException 
 * @throws UnsupportedEncodingException 
 * @throws NoSuchProviderException 
 * @throws NoSuchAlgorithmException 
 * @throws KeyManagementException 
 */
public static String get(String url, Map<String, String> params, Map<String, String> headers)
        throws KeyManagementException, NoSuchAlgorithmException, NoSuchProviderException,
        UnsupportedEncodingException, IOException {
    HttpURLConnection http = null;
    if (isHttps(url)) {
        http = initHttps(initParams(url, params), _GET, headers);
    } else {
        http = initHttp(initParams(url, params), _GET, headers);
    }
    InputStream in = http.getInputStream();
    BufferedReader read = new BufferedReader(new InputStreamReader(in, DEFAULT_CHARSET));
    String valueString = null;
    StringBuffer bufferRes = new StringBuffer();
    while ((valueString = read.readLine()) != null) {
        bufferRes.append(valueString);
    }
    in.close();
    if (http != null) {
        http.disconnect();// 
    }
    return bufferRes.toString();
}

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From source file:Main.java

public static String getHtml(String getUrl, int outtime, String charsetName) {
    String html = "";
    URL url;/*  www .  j av a 2 s .c  o  m*/
    try {
        url = new URL(getUrl);
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        connection.setRequestProperty("User-Agent",
                "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; InfoPath.1; CIBA)");
        // connection.setRequestProperty("Connection", "Keep-Alive");
        // connection.setRequestProperty("Cache-Control", "no-cache");
        connection.setConnectTimeout(outtime);
        connection.connect();
        InputStream inStrm = connection.getInputStream();

        BufferedReader br = new BufferedReader(new InputStreamReader(inStrm, charsetName));
        String temp = "";

        while ((temp = br.readLine()) != null) {
            html = html + (temp + '\n');
        }
        try {
            br.close();
        } catch (Exception e) {
            // TODO: handle exception
        }
        try {
            connection.disconnect();
        } catch (Exception e) {
            // TODO: handle exception
        }
    } catch (Exception e) {
        e.printStackTrace();
    }

    return html;
}

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From source file:com.meetingninja.csse.database.UserDatabaseAdapter.java

public static Schedule getSchedule(String userID) throws JsonParseException, JsonMappingException, IOException {
    // Server URL setup
    String _url = getBaseUri().appendPath("Schedule").appendPath(userID).build().toString();
    // establish connection
    URL url = new URL(_url);
    HttpURLConnection conn = (HttpURLConnection) url.openConnection();

    // add request header
    conn.setRequestMethod(IRequest.GET);
    addRequestHeader(conn, false);//w  w  w .  j a va  2  s . c om

    // Get server response
    int responseCode = conn.getResponseCode();
    String response = getServerResponse(conn);

    Schedule sched = parseSchedule(MAPPER.readTree(response));

    conn.disconnect();
    return sched;
}

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From source file:edu.stanford.muse.launcher.Splash.java

private static boolean isURLAlive(String url) throws IOException {
    try {/*from   w w w.ja v  a 2s  .  c om*/
        // attempt to fetch the page
        // throws a connect exception if the server is not even running
        // so catch it and return false

        // since "index" may auto load default archive, attach it to session, and redirect to "info" page,
        // we need to maintain the session across the pages.
        // see "Maintaining the session" at http://stackoverflow.com/questions/2793150/how-to-use-java-net-urlconnection-to-fire-and-handle-http-requests
        CookieHandler.setDefault(new CookieManager(null, CookiePolicy.ACCEPT_ALL));

        out.println("Testing liveness at " + url);
        HttpURLConnection u = (HttpURLConnection) new URL(url).openConnection();
        if (u.getResponseCode() == 200) {
            u.disconnect();
            return true;
        }
        u.disconnect();
    } catch (ConnectException ce) {
    }
    return false;
}

---

From source file:connector.ISConnector.java

public static JSONObject processRequest(String servlet, byte[] query) {
    JSONObject response = null;//from www .  j  a va2s. c  o  m
    if (servlet != null && !servlet.startsWith("/"))
        servlet = "/" + servlet;
    try {
        // Establish HTTP connection with Identity Service
        URL url = new URL(CONTEXT_PATH + servlet);
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        conn.setRequestMethod("POST");
        conn.setDoOutput(true);
        conn.setDoInput(true);
        conn.setUseCaches(false);
        conn.setAllowUserInteraction(false);
        conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");

        //Create the form content
        try (OutputStream out = conn.getOutputStream()) {
            out.write(query);
            out.close();
        }

        // Buffer the result into a string
        BufferedReader rd = new BufferedReader(new InputStreamReader(conn.getInputStream()));
        StringBuilder sb = new StringBuilder();
        String line;
        while ((line = rd.readLine()) != null) {
            sb.append(line);
        }

        rd.close();
        conn.disconnect();
        response = (JSONObject) new JSONParser().parse(sb.toString());

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

    return response;
}

---

From source file:Main.java

static void getHTTPXml(URL url) throws Exception {
    HttpURLConnection conn = (HttpURLConnection) url.openConnection();
    conn.setRequestMethod("POST");
    conn.setRequestProperty("ACCEPT", "application/xml");
    InputStream xml = conn.getInputStream();

    DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
    DocumentBuilder builder = factory.newDocumentBuilder();
    org.w3c.dom.Document document = builder.parse(xml);

    System.out.println(document);
    String doctype = conn.getContentType();
    System.out.println(doctype);//from ww w .  ja v  a2  s . c  om

    XPathFactory pathFactory = XPathFactory.newInstance();
    XPath path = pathFactory.newXPath();
    XPathExpression expression;
    expression = path.compile("/result/checkid");
    NodeList nodeList = (NodeList) expression.evaluate(document, XPathConstants.NODESET);
    String checkids[] = getNodeValue(nodeList);
    for (String checkid : checkids) {
        System.out.print(checkid + ", ");
    }
    conn.disconnect();
}

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From source file:com.iStudy.Study.Renren.Util.java

public static String uploadFile(String reqUrl, Bundle parameters, String fileParamName, String filename,
        String contentType, byte[] data) {
    HttpURLConnection urlConn = null;
    try {/*from w  w w.  j  a  v  a  2s.c o  m*/
        urlConn = sendFormdata(reqUrl, parameters, fileParamName, filename, contentType, data);
        String responseContent = read(urlConn.getInputStream());
        return responseContent.trim();
    } catch (Exception e) {
        throw new RuntimeException(e.getMessage(), e);
    } finally {
        if (urlConn != null) {
            urlConn.disconnect();
        }
    }
}

---

From source file:Main.java

public static boolean downloadFile(File file, URL url) throws IOException {
    BufferedInputStream bis = null;
    BufferedOutputStream bos = null;
    HttpURLConnection conn = null;
    try {/*from   w  w  w . j a  v  a2  s  .  c  o  m*/
        conn = (HttpURLConnection) url.openConnection();
        bis = new BufferedInputStream(conn.getInputStream());
        bos = new BufferedOutputStream(new FileOutputStream(file));

        int contentLength = conn.getContentLength();

        byte[] buffer = new byte[BUFFER_SIZE];
        int read = 0;
        int count = 0;
        while ((read = bis.read(buffer)) != -1) {
            bos.write(buffer, 0, read);
            count += read;
        }
        if (count < contentLength)
            return false;
        int responseCode = conn.getResponseCode();
        if (responseCode / 100 != 2) {
            // error
            return false;
        }
        // finished
        return true;
    } finally {
        try {
            bis.close();
            bos.close();
            conn.disconnect();
        } catch (Exception e) {
        }
    }
}

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From source file:com.manning.androidhacks.hack040.util.ImageFetcher.java

/**
 * Download a bitmap from a URL, write it to a disk and return the File
 * pointer. This implementation uses a simple disk cache.
 * //from w  ww .  j  a  v  a2  s.co  m
 * @param context
 *          The context to use
 * @param urlString
 *          The URL to fetch
 * @param cache
 *          The disk cache instance to get the download directory from.
 * @return A File pointing to the fetched bitmap
 */
public static File downloadBitmap(Context context, String urlString, DiskLruCache cache) {
    final File cacheFile = new File(cache.createFilePath(urlString));

    if (cache.containsKey(urlString)) {
        if (BuildConfig.DEBUG) {
            Log.d(TAG, "downloadBitmap - found in http cache - " + urlString);
        }
        return cacheFile;
    }

    if (BuildConfig.DEBUG) {
        Log.d(TAG, "downloadBitmap - downloading - " + urlString);
    }

    Utils.disableConnectionReuseIfNecessary();
    HttpURLConnection urlConnection = null;
    BufferedOutputStream out = null;

    try {
        final URL url = new URL(urlString);
        urlConnection = (HttpURLConnection) url.openConnection();
        final InputStream in = new BufferedInputStream(urlConnection.getInputStream(), Utils.IO_BUFFER_SIZE);
        out = new BufferedOutputStream(new FileOutputStream(cacheFile), Utils.IO_BUFFER_SIZE);

        int b;
        while ((b = in.read()) != -1) {
            out.write(b);
        }
        cache.putFromFetcher(urlString);
        return cacheFile;

    } catch (final IOException e) {
        Log.e(TAG, "Error in downloadBitmap - " + e);
    } finally {
        if (urlConnection != null) {
            urlConnection.disconnect();
        }
        if (out != null) {
            try {
                out.close();
            } catch (final IOException e) {
                Log.e(TAG, "Error in downloadBitmap - " + e);
            }
        }
    }

    return null;
}

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