Example usage for java.net HttpURLConnection connect

Introduction

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

Prototype

public abstract void connect() throws IOException;

Source Link

Document

Opens a communications link to the resource referenced by this URL, if such a connection has not already been established.

Usage

From source file:org.opensourcetlapp.tl.CustomImageGetter.java

private InputStream getImageInputStream(String url) throws IOException {
    URL myFileUrl;/*from www  .  ja  va2s.c  o m*/
    try {
        myFileUrl = new URL(url);
    } catch (MalformedURLException e) {
        myFileUrl = new URL(TLLib.getAbsoluteURL(url));
    }
    HttpURLConnection conn = (HttpURLConnection) myFileUrl.openConnection();
    conn.setDoInput(true);
    conn.connect();
    return conn.getInputStream();

}

From source file:org.hawkular.metrics.clients.ptrans.backend.RestForwardingHandlerITest.java

private JsonNode findNumericDataOnServer() throws IOException {
    HttpURLConnection urlConnection = (HttpURLConnection) new URL(findNumericDataUrl).openConnection();
    urlConnection.connect();
    int responseCode = urlConnection.getResponseCode();
    if (responseCode != HttpURLConnection.HTTP_OK) {
        return null;
    }//w  ww  .j  a v a 2 s.c om
    ObjectMapper objectMapper = new ObjectMapper();
    try (InputStream inputStream = urlConnection.getInputStream()) {
        return objectMapper.readTree(inputStream);
    }
}

From source file:com.cpp255.bookbarcode.DouBanBookInfoXmlParser.java

/**
 * ?isbn???/* w w  w. ja  v  a  2  s  .  c om*/
 * 
 * @param isbnNo
 * @return
 * @throws IOException
 */
public BookInfo fetchBookInfoByXML(String isbnNo) throws IOException {
    String requestUrl = ISBN_URL + isbnNo;
    URL url = new URL(requestUrl);
    HttpURLConnection conn = (HttpURLConnection) url.openConnection();
    conn.connect();
    if (conn.getResponseCode() == RETURN_BOOKINFO_STATUS) {
        InputStream is = conn.getInputStream();
        InputStreamReader isr = new InputStreamReader(is, "utf-8");
        BufferedReader br = new BufferedReader(isr);
        StringBuilder sb = new StringBuilder();

        String line = null;
        while ((line = br.readLine()) != null) {
            sb.append(line);
        }

        br.close();
        return readBookInfo(sb.toString());
    }

    return null;
}

From source file:br.com.arlsoft.pushclient.PushClientModule.java

private static Bitmap getBitmapFromURL(String strURL) {
    URL url = null;// ww  w  .  j  av a 2 s .c  om
    HttpURLConnection connection = null;
    InputStream input = null;
    Bitmap myBitmap = null;
    try {
        url = new URL(strURL);
        connection = (HttpURLConnection) url.openConnection();
        connection.setDoInput(true);
        connection.connect();
        input = connection.getInputStream();
        myBitmap = BitmapFactory.decodeStream(input);
        return myBitmap;
    } catch (Exception e) {
        return null;
    }
}

From source file:io.fabric8.itests.basic.cloud.FabricRackspaceContainerTest.java

/**
 * @return the IP address of the client on which this code is running.
 * @throws java.io.IOException/*  w  ww  . j a v a2s.  c o m*/
 */
protected String getOriginatingIp() throws IOException {
    URL url = new URL("http://checkip.amazonaws.com/");
    HttpURLConnection connection = (HttpURLConnection) url.openConnection();
    connection.connect();
    return IOUtils.toString(connection.getInputStream()).trim() + "/32";
}

From source file:net.ae97.pokebot.extensions.scrolls.OnlineCommand.java

@Override
public void runEvent(CommandEvent event) {
    try {/*from   w  w  w  .j  a v a2 s  . com*/
        List<String> lines = new LinkedList<>();
        HttpURLConnection conn = (HttpURLConnection) new URL(url).openConnection();
        conn.setRequestProperty("User-Agent", "PokeBot - " + PokeBot.VERSION);
        conn.connect();
        try (BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream()))) {
            String line;
            while ((line = reader.readLine()) != null) {
                lines.add(line);
            }
        }
        JsonParser parser = new JsonParser();
        JsonElement element = parser.parse(StringUtils.join(lines, "\n"));
        JsonObject obj = element.getAsJsonObject();
        int online = obj.get("data").getAsJsonObject().get("online").getAsInt();
        event.respond("there are " + online + " online users in Scrolls");
    } catch (IOException | JsonSyntaxException ex) {
        PokeBot.getLogger().log(Level.SEVERE, "Error on getting online players for Scrolls", ex);
        event.respond("error on finding online players: " + ex.getLocalizedMessage());
    }
}

From source file:asu.edu.msse.gpeddabu.moviedescriptions.AsyncLibraryConnect.java

private String downloadUrl(String myurl) throws IOException {
    String response = "{}";
    InputStream is = null;/*from www.  ja  va 2  s  .  co m*/
    try {
        URL url = new URL(myurl);
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        conn.setRequestMethod("GET");
        // Starts the query
        conn.connect();
        int responseCode = conn.getResponseCode();
        is = conn.getInputStream();
        BufferedReader br = new BufferedReader(new InputStreamReader(is));
        String line = "";
        StringBuilder responseOutput = new StringBuilder();
        while ((line = br.readLine()) != null) {
            responseOutput.append(line);
        }
        br.close();
        response = responseOutput.toString();
        // Makes sure that the InputStream is closed after the app is
        // finished using it.
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        if (is != null) {
            is.close();
        }
    }
    return response;
}

From source file:com.cloudbees.mtslaves.client.VirtualMachineRef.java

/**
 * Throws away this VM./*from   w  ww.j  a va2s  . c o  m*/
 */
public void dispose() throws IOException, InterruptedException {
    HttpURLConnection con = open("dispose");
    con.setRequestMethod("POST");
    con.connect();
    verifyResponseStatus(con);
    drain(con);
}

From source file:org.pentaho.pat.server.servlet.PentahoServlet.java

private final boolean verifyXmlaUrl(final String xmlaUrl) {
    if (xmlaUrl == null) {
        return false;
    }//from   ww  w  . j ava2  s. co m
    try {
        final URL url = new URL(xmlaUrl);
        // TODO support connection timeout.
        final URLConnection connection = url.openConnection();
        if (connection instanceof HttpURLConnection) {
            HttpURLConnection.setFollowRedirects(true);
            final HttpURLConnection httpConnection = (HttpURLConnection) connection;
            httpConnection.connect();
            return true;
        } else {
            return false;
        }
    } catch (Throwable t) {
        // TODO log this
        return false;
    }
}

From source file:com.nexmo.sdk.core.client.Client.java

/**
 * Executes a connection, and validates that the body was supplied.
 *
 * @param connection A prepared HttpUrlConnection.
 *
 * @return The response object./*from   w ww.ja v  a 2 s . co  m*/
 * @throws IOException If an error occurs while connecting to the resource.
 * @throws InternalNetworkException If an internal sdk error occurs while parsing the response.
 */
@Override
public Response execute(HttpURLConnection connection) throws IOException, InternalNetworkException {
    try {
        connection.connect();

        if (connection.getResponseCode() == HttpStatus.SC_OK) {
            if (BuildConfig.DEBUG)
                Log.d(TAG, connection.getURL().toString());
            String signatureSupplied = connection.getHeaderField(BaseService.RESPONSE_SIG);
            Response response = new Response(getResponseString(connection.getInputStream()), signatureSupplied);

            if (TextUtils.isEmpty(response.getBody()))
                throw new InternalNetworkException(TAG + "Internal error. Body response missing.");
            else
                return response;
        } else
            throw new InternalNetworkException(
                    TAG + " Internal error. Unable to connect to server. " + connection.getResponseCode());
    } finally {
        connection.disconnect();
    }
}