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:mdretrieval.FileFetcher.java

public static String[] loadStringFromURL(String destinationURL, boolean acceptRDF) throws IOException {
    String[] ret = new String[2];

    HttpURLConnection urlConnection = null;
    InputStream inputStream = null;

    String dest = destinationURL;
    URL url = new URL(dest);
    Proxy proxy = null;/*w  w  w .j  a  v a  2  s.c  o  m*/

    if (ServerConstants.isProxyEnabled) {
        proxy = new Proxy(Proxy.Type.HTTP,
                new InetSocketAddress(ServerConstants.hostname, ServerConstants.port));
        urlConnection = (HttpURLConnection) url.openConnection(proxy);
    } else {
        urlConnection = (HttpURLConnection) url.openConnection();
    }

    boolean redirect = false;

    int status = urlConnection.getResponseCode();
    if (Master.DEBUG_LEVEL >= Master.LOW)
        System.out.println("RESPONSE-CODE--> " + status);
    if (status != HttpURLConnection.HTTP_OK) {
        if (status == HttpURLConnection.HTTP_MOVED_TEMP || status == HttpURLConnection.HTTP_MOVED_PERM
                || status == HttpURLConnection.HTTP_SEE_OTHER)
            redirect = true;
    }

    if (redirect) {
        String newUrl = urlConnection.getHeaderField("Location");
        dest = newUrl;
        urlConnection.disconnect();
        if (Master.DEBUG_LEVEL > Master.LOW)
            System.out.println("REDIRECT--> " + newUrl);
        urlConnection = openMaybeProxyConnection(proxy, newUrl);
    }

    try {
        urlConnection.setRequestMethod("GET");
        urlConnection.setRequestProperty("Accept", HTTP_RDFXML_PROP);
        urlConnection.setDoInput(true);
        //urlConnection.setDoOutput(true);            
        inputStream = urlConnection.getInputStream();
        ret[1] = urlConnection.getHeaderField("Content-Type");
    } catch (IllegalStateException e) {
        if (Master.DEBUG_LEVEL >= Master.LOW)
            System.out.println(" DEBUG: IllegalStateException");
        urlConnection.disconnect();
        HttpURLConnection conn2 = openMaybeProxyConnection(proxy, dest);
        conn2.setRequestMethod("GET");
        conn2.setRequestProperty("Accept", HTTP_RDFXML_PROP);
        conn2.setDoInput(true);
        inputStream = conn2.getInputStream();
        ret[1] = conn2.getHeaderField("Content-Type");
    }

    try {
        ret[0] = IOUtils.toString(inputStream);

        if (Master.DEBUG_LEVEL > Master.LOW) {
            System.out.println(" Content-type: " + urlConnection.getHeaderField("Content-Type"));
        }
    } finally {
        IOUtils.closeQuietly(inputStream);
        urlConnection.disconnect();
    }

    if (Master.DEBUG_LEVEL > Master.LOW)
        System.out.println("Done reading " + destinationURL);
    return ret;

}

---

From source file:Main.java

public static String callJsonAPI(String urlString) {
    // Use HttpURLConnection as per Android 6.0 spec, instead of less efficient HttpClient
    HttpURLConnection urlConnection = null;
    StringBuilder jsonResult = new StringBuilder();

    try {//  ww w  .jav a2  s . c o m
        URL url = new URL(urlString);
        urlConnection = (HttpURLConnection) url.openConnection();
        urlConnection.setRequestMethod("GET");
        urlConnection.setUseCaches(false);
        urlConnection.setConnectTimeout(TIMEOUT_CONNECTION);
        urlConnection.setReadTimeout(TIMEOUT_READ);
        urlConnection.connect();

        int status = urlConnection.getResponseCode();

        switch (status) {
        case 200:
        case 201:
            BufferedReader br = new BufferedReader(new InputStreamReader(urlConnection.getInputStream()));

            String line;
            while ((line = br.readLine()) != null) {
                jsonResult.append(line).append("\n");
            }
            br.close();
        }
    } catch (MalformedURLException e) {
        System.err.print(e.getMessage());
        return e.getMessage();
    } catch (IOException e) {
        System.err.print(e.getMessage());
        return e.getMessage();
    } finally {
        if (urlConnection != null) {
            try {
                urlConnection.disconnect();
            } catch (Exception e) {
                System.err.print(e.getMessage());
            }
        }
    }
    return jsonResult.toString();
}

---

From source file:Main.java

/**
 * Issue a POST request to the server./*from   w w  w.  ja  va 2 s. c  o  m*/
 *
 * @param endpoint
 *            POST address.
 * @param params
 *            request parameters.
 *
 * @throws IOException
 *             propagated from POST.
 */
public static String post_t(String endpoint, Map<String, Object> params, String contentType)
        throws IOException {
    URL url;
    try {
        url = new URL(endpoint);
    } catch (MalformedURLException e) {
        throw new IllegalArgumentException("invalid url: " + endpoint);
    }
    StringBuilder bodyBuilder = new StringBuilder();
    Iterator<Entry<String, Object>> iterator = params.entrySet().iterator();
    // constructs the POST body using the parameters
    while (iterator.hasNext()) {
        Entry<String, Object> param = iterator.next();
        bodyBuilder.append(param.getKey()).append('=').append(param.getValue());
        if (iterator.hasNext()) {
            bodyBuilder.append('&');
        }
    }
    String body = bodyBuilder.toString();
    byte[] bytes = body.getBytes();
    HttpURLConnection conn = null;
    try {
        conn = (HttpURLConnection) url.openConnection();
        conn.setDoOutput(true);
        conn.setUseCaches(false);
        conn.setFixedLengthStreamingMode(bytes.length);
        conn.setRequestMethod("POST");
        conn.setRequestProperty("Content-Type", contentType);
        // post the request
        OutputStream out = conn.getOutputStream();
        out.write(bytes);
        out.close();
        // handle the response
        int status = conn.getResponseCode();
        if (status != 200) {
            throw new IOException("Post failed with error code " + status);
        }

        // Get Response
        InputStream is = conn.getInputStream();
        BufferedReader rd = new BufferedReader(new InputStreamReader(is));
        String line;
        StringBuffer response = new StringBuffer();
        while ((line = rd.readLine()) != null) {
            response.append(line);
            response.append('\n');
        }
        rd.close();
        return response.toString();

    } finally {
        if (conn != null) {
            conn.disconnect();
        }
    }
}

---

From source file:com.max2idea.android.fwknop.Fwknop.java

public static String getExternalIP() {
    URL Url = null;/*from  ww  w.  j av  a 2  s  .  c  o  m*/
    HttpURLConnection Conn = null;
    InputStream InStream = null;
    InputStreamReader Isr = null;
    String extIP = "";

    try {
        Url = new java.net.URL("http://ifconfig.me/ip");
        Conn = (HttpURLConnection) Url.openConnection();
        InStream = Conn.getInputStream();
        Isr = new java.io.InputStreamReader(InStream);
        BufferedReader Br = new java.io.BufferedReader(Isr);
        extIP = Br.readLine();
        Log.v("External IP", "Your external IP address is " + extIP);
    } catch (Exception ex) {
        Logger.getLogger(Fwknop.class.getName()).log(Level.SEVERE, null, ex);
    } finally {
        //            Isr.close();
        //            InStream.close();
        Conn.disconnect();
    }
    return extIP;

}

---

From source file:com.googlesource.gerrit.plugins.its.jira.restapi.JiraRestApi.java

private boolean sendPayload(String method, String spec, String jsonInput, int passCode) throws IOException {
    HttpURLConnection conn = prepHttpConnection(spec, method, true);
    try {/*from  w  w  w  .  j av a2s  .c  o  m*/
        writeBodyData(jsonInput, conn);
        return validateResponse(conn, passCode, null);
    } finally {
        conn.disconnect();
    }
}

---

From source file:com.juick.android.Utils.java

public static int doHttpGetRequest(String url) {
    try {//from   www  . ja  v a2s .  com
        HttpURLConnection conn = (HttpURLConnection) (new URL(url)).openConnection();
        conn.setUseCaches(false);
        conn.connect();
        int status = conn.getResponseCode();
        conn.disconnect();
        return status;
    } catch (Exception e) {
        Log.e("doHttpGetRequest", e.toString());
    }
    return 0;
}

---

From source file:com.example.scandevice.MainActivity.java

public static String excutePost(String targetURL, String urlParameters) {
    URL url;// ww  w.  ja  v a2 s. c o m
    HttpURLConnection connection = null;
    try {
        //Create connection
        url = new URL(targetURL);
        connection = (HttpURLConnection) url.openConnection();
        connection.setRequestMethod("POST");
        connection.setRequestProperty("Content-Type", "application/json");
        connection.setRequestProperty("Accept", "application/json");
        connection.setRequestProperty("charset", "utf-8");

        connection.setRequestProperty("Content-Length", "" + Integer.toString(urlParameters.getBytes().length));
        connection.setRequestProperty("Content-Language", "en-US");

        connection.setUseCaches(false);
        connection.setDoInput(true);
        connection.setDoOutput(true);

        //Send request
        DataOutputStream wr = new DataOutputStream(connection.getOutputStream());
        wr.writeBytes(urlParameters);
        wr.flush();
        wr.close();

    } catch (Exception e) {
        e.printStackTrace();
        return "Don't post data";

    } finally {

        if (connection != null) {
            connection.disconnect();
        }
    }
    return "Data Sent";
}

---

From source file:edu.dartmouth.cs.dartcard.HttpUtilities.java

/**
 * Issue a POST request to the server./*from  w ww. java2s  .c  o m*/
 * 
 * @param endpoint
 *            POST address.
 * @param params
 *            request parameters.
 * 
 * @throws IOException
 *             propagated from POST.
 */
public static boolean post(String endpoint, Map<String, String> params) {
    URL url = null;
    try {
        url = new URL(endpoint);
    } catch (MalformedURLException e) {
        //Fail silently
    }

    byte[] bytes = constructParams(params);

    HttpURLConnection conn;

    long backoff = BACKOFF_MILLI_SECONDS + random.nextInt(1000);
    for (int i = 1; i <= HttpUtilities.MAX_ATTEMPTS; i++) {
        try {
            conn = makePostConnection(url, bytes);

            // handle the response
            int status = conn.getResponseCode();

            if (status == 200) {
                //Useful for debugging
                /*
                BufferedReader br = 
                new BufferedReader(new InputStreamReader(conn.getInputStream()));
                    StringBuilder sb = new StringBuilder();
                    String line;
                    while ((line = br.readLine()) != null) {
                  sb.append(line+"\n");
                    }
                    br.close();
                    Log.d("output", sb.toString());
                 */

                if (null != conn) {
                    conn.disconnect();
                }
                return true;
            }

            else if (500 > status) {
                if (null != conn) {
                    conn.disconnect();
                }
                return false;
            }
        } catch (IOException e) {
            try {
                Thread.sleep(backoff);
            } catch (InterruptedException e1) {
                // Activity finished before we complete - exit.
                Thread.currentThread().interrupt();
            }
            // increase backoff exponentially
            backoff *= 2;
        }
    }

    return false;
}

---

From source file:ext.services.network.TestNetworkUtils.java

/**
 * Test method for.//from  w  w w  .  j  a  v a 2s . com
 *
 * @throws Exception the exception
 * {@link ext.services.network.NetworkUtils#getConnection(java.lang.String, ext.services.network.Proxy)}
 * .
 */
public void testGetConnectionStringProxy() throws Exception {
    // null when no connection is allowed
    Conf.setProperty(Const.CONF_NETWORK_NONE_INTERNET_ACCESS, "true");
    assertNull(NetworkUtils.getConnection(URL, null));
    // useful content when inet access is allowed
    Conf.setProperty(Const.CONF_NETWORK_NONE_INTERNET_ACCESS, "false");
    HttpURLConnection connection = NetworkUtils.getConnection(URL, null);
    assertNotNull(connection);
    connection.disconnect();
}

---

From source file:org.apache.nifi.minifi.integration.util.LogUtil.java

public static void verifyLogEntries(String expectedJsonFilename, Container container) throws Exception {
    List<ExpectedLogEntry> expectedLogEntries;
    try (InputStream inputStream = LogUtil.class.getClassLoader().getResourceAsStream(expectedJsonFilename)) {
        List<Map<String, Object>> expected = new ObjectMapper().readValue(inputStream, List.class);
        expectedLogEntries = expected.stream()
                .map(map -> new ExpectedLogEntry(Pattern.compile((String) map.get("pattern")),
                        (int) map.getOrDefault("occurrences", 1)))
                .collect(Collectors.toList());
    }//from   ww  w .j  a  v a  2s  . c  om
    DockerPort dockerPort = container.port(8000);
    URL url = new URL("http://" + dockerPort.getIp() + ":" + dockerPort.getExternalPort());
    HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
    try (InputStream inputStream = urlConnection.getInputStream();
            InputStreamReader inputStreamReader = new InputStreamReader(inputStream);
            BufferedReader bufferedReader = new BufferedReader(inputStreamReader)) {
        String line;
        for (ExpectedLogEntry expectedLogEntry : expectedLogEntries) {
            boolean satisfied = false;
            int occurrences = 0;
            while ((line = bufferedReader.readLine()) != null) {
                if (expectedLogEntry.pattern.matcher(line).find()) {
                    logger.info("Found expected: " + line);
                    if (++occurrences >= expectedLogEntry.numOccurrences) {
                        logger.info("Found target " + occurrences + " times");
                        satisfied = true;
                        break;
                    }
                }
            }
            if (!satisfied) {
                fail("End of log reached without " + expectedLogEntry.numOccurrences + " match(es) of "
                        + expectedLogEntry.pattern);
            }
        }
    } finally {
        urlConnection.disconnect();
    }
}

---

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