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:com.jeffrodriguez.webtools.client.URLConnectionWebClientImpl.java

@Override
public String getString(String url) throws IOException {
    logger.log(Level.INFO, "Getting String from {0}", url);

    // Build and connect
    HttpURLConnection connection = buildConnection(url);
    connection.connect();

    // Check for errors
    checkForErrors(connection);//from   w  w w  .ja va  2s.co m

    // Get the result
    return disconnectAndReturn(connection, IOUtils.toString(connection.getInputStream(), "ISO-8859-1"));
}

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From source file:com.jeffrodriguez.webtools.client.URLConnectionWebClientImpl.java

@Override
public Document getDocument(String url) throws IOException, ParserConfigurationException, SAXException {
    logger.log(Level.INFO, "Getting Document from {0}", url);

    // Build and connect
    HttpURLConnection connection = buildConnection(url);
    connection.connect();

    // Check for errors
    checkForErrors(connection);//from  www.jav  a2  s  .  c om

    // Get the result
    return disconnectAndReturn(connection, buildDocument(connection.getInputStream()));
}

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From source file:com.jeffrodriguez.webtools.client.URLConnectionWebClientImpl.java

@Override
public XML getXML(String url) throws IOException, ParserConfigurationException, SAXException {
    logger.log(Level.INFO, "Getting Document from {0}", url);

    // Build and connect
    HttpURLConnection connection = buildConnection(url);
    connection.connect();

    // Check for errors
    checkForErrors(connection);//from  www.  j a va 2  s.  c  o  m

    // Get the result
    Document document = buildDocument(connection.getInputStream());
    return disconnectAndReturn(connection, new XML(document));
}

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From source file:com.jeffrodriguez.webtools.client.URLConnectionWebClientImpl.java

@Override
public JSOG getJsog(String url) throws IOException {
    logger.log(Level.INFO, "Getting JSOG from {0}", url);

    // Build and connect
    HttpURLConnection connection = buildConnection(url);
    connection.connect();

    // Check for errors
    checkForErrors(connection);/*from w  ww  .  j  a  v a 2 s .co m*/

    // Get the result
    return disconnectAndReturn(connection,
            JSOG.parse(IOUtils.toString(connection.getInputStream(), "ISO-8859-1")));
}

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

private String downloadUrl(String strUrl) throws IOException {
    String data = "";
    InputStream iStream = null;/*from   w  w w  . j  a va  2 s  . c om*/
    HttpURLConnection urlConnection = null;
    try {
        URL url = new URL(strUrl);

        urlConnection = (HttpURLConnection) url.openConnection();

        urlConnection.connect();

        iStream = urlConnection.getInputStream();

        BufferedReader br = new BufferedReader(new InputStreamReader(iStream));

        StringBuffer sb = new StringBuffer();

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

        data = sb.toString();

        br.close();

    } catch (Exception e) {
        Log.d("Exception while downloading url", e.toString());
    } finally {
        iStream.close();
        urlConnection.disconnect();
    }
    return data;
}

---

From source file:org.csware.ee.utils.Tools.java

public static String GetDataByPost(String httpUrl, String parMap) {
    try {//from ww w . j a  v  a  2  s .co  m
        URL url = new URL(httpUrl);// 
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        connection.setDoOutput(true);
        connection.setDoInput(true);
        connection.setUseCaches(false);
        connection.setInstanceFollowRedirects(true);
        connection.setRequestMethod("POST"); // ?
        connection.setRequestProperty("Accept", "application/json"); // ??
        connection.setRequestProperty("Content-Type", "application/json"); // ????
        connection.connect();
        OutputStreamWriter out = new OutputStreamWriter(connection.getOutputStream(), "UTF-8"); // utf-8?
        out.append(parMap);
        out.flush();
        out.close();
        // ??
        int length = (int) connection.getContentLength();// ?
        InputStream is = connection.getInputStream();
        if (length != -1) {
            byte[] data = new byte[length];
            byte[] temp = new byte[1024];
            int readLen = 0;
            int destPos = 0;
            while ((readLen = is.read(temp)) > 0) {
                System.arraycopy(temp, 0, data, destPos, readLen);
                destPos += readLen;
            }
            String result = new String(data, "UTF-8"); // utf-8?
            return result;
        }
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
        System.out.println("aa:  " + e.getMessage());
    }
    return "error"; // ?
}

---

From source file:com.jiramot.foursquare.android.Util.java

/**
 * Connect to an HTTP URL and return the response as a string.
 *
 * Note that the HTTP method override is used on non-GET requests. (i.e.
 * requests are made as "POST" with method specified in the body).
 *
 * @param url - the resource to open: must be a welformed URL
 * @param method - the HTTP method to use ("GET", "POST", etc.)
 * @param params - the query parameter for the URL (e.g. access_token=foo)
 * @return the URL contents as a String/*from w w w  .  j  a  v a2 s.c om*/
 * @throws MalformedURLException - if the URL format is invalid
 * @throws IOException - if a network problem occurs
 */
public static String openUrl(String url, String method, Bundle params)
        throws MalformedURLException, IOException {
    // random string as boundary for multi-part http post
    String strBoundary = "3i2ndDfv2rTHiSisAbouNdArYfORhtTPEefj3q2f";
    String endLine = "\r\n";

    OutputStream os;

    if (method.equals("GET")) {
        url = url + "?" + encodeUrl(params);
    }
    Log.d("Foursquare-Util", method + " URL: " + url);
    HttpURLConnection conn = (HttpURLConnection) new URL(url).openConnection();
    conn.setRequestProperty("User-Agent",
            System.getProperties().getProperty("http.agent") + " FoursquareAndroidSDK");
    if (!method.equals("GET")) {
        Bundle dataparams = new Bundle();
        for (String key : params.keySet()) {
            if (params.getByteArray(key) != null) {
                dataparams.putByteArray(key, params.getByteArray(key));
            }
        }

        // use method override
        if (!params.containsKey("method")) {
            params.putString("method", method);
        }

        if (params.containsKey("access_token")) {
            String decoded_token = URLDecoder.decode(params.getString("access_token"));
            params.putString("access_token", decoded_token);
        }

        conn.setRequestMethod("POST");
        conn.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + strBoundary);
        conn.setDoOutput(true);
        conn.setDoInput(true);
        conn.setRequestProperty("Connection", "Keep-Alive");
        conn.connect();
        os = new BufferedOutputStream(conn.getOutputStream());

        os.write(("--" + strBoundary + endLine).getBytes());
        os.write((encodePostBody(params, strBoundary)).getBytes());
        os.write((endLine + "--" + strBoundary + endLine).getBytes());

        if (!dataparams.isEmpty()) {

            for (String key : dataparams.keySet()) {
                os.write(("Content-Disposition: form-data; filename=\"" + key + "\"" + endLine).getBytes());
                os.write(("Content-Type: content/unknown" + endLine + endLine).getBytes());
                os.write(dataparams.getByteArray(key));
                os.write((endLine + "--" + strBoundary + endLine).getBytes());

            }
        }
        os.flush();
    }

    String response = "";
    try {
        response = read(conn.getInputStream());
    } catch (FileNotFoundException e) {
        // Error Stream contains JSON that we can parse to a FB error
        response = read(conn.getErrorStream());
    }
    return response;
}

---

From source file:com.orange.oidc.tim.service.HttpOpenidConnect.java

static String getUserInfo(String server_url, String access_token) {
    // android.os.Debug.waitForDebugger();

    // check if server is valid
    if (isEmpty(server_url) || isEmpty(access_token)) {
        return null;
    }//w w  w  .  ja v a2s  .  co  m

    String userinfo_endpoint = getEndpointFromConfigOidc("userinfo_endpoint", server_url);
    if (isEmpty(userinfo_endpoint)) {
        Logd(TAG, "getUserInfo : could not get endpoint on server : " + server_url);
        return null;
    }

    Logd(TAG, "getUserInfo : " + userinfo_endpoint);
    // build connection
    HttpURLConnection huc = getHUC(userinfo_endpoint);
    huc.setInstanceFollowRedirects(false);
    // huc.setRequestProperty("Content-Type","application/x-www-form-urlencoded");

    huc.setRequestProperty("Authorization", "Bearer " + access_token);

    // default result
    String result = null;

    try {
        // try to establish connection 
        huc.connect();
        // get result
        int responseCode = huc.getResponseCode();
        Logd(TAG, "getUserInfo 2 response: " + responseCode);

        // if 200, read http body
        if (responseCode == 200) {
            InputStream is = huc.getInputStream();
            result = convertStreamToString(is);
            is.close();
        }

        // close connection
        huc.disconnect();

    } catch (Exception e) {
        Logd(TAG, "getUserInfo failed");
        e.printStackTrace();
    }

    return result;
}

---

From source file:honeypot.services.WepawetServiceImpl.java

/**
 * {@inheritDoc}/*from w ww  . j av a 2s. co  m*/
 * @see honeypot.services.WepawetService#checkQueue(java.lang.String)
 */
@Transactional
public void checkQueue(String hash) {
    try {
        String parameters = "resource_type=js&hash=" + URLEncoder.encode(hash, "UTF-8");
        URL url = new URL("http://wepawet.cs.ucsb.edu/services/query.php?" + parameters);
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();

        connection.setDoOutput(true);
        connection.setRequestMethod("GET");

        //Send request
        connection.connect();
        if (HttpURLConnection.HTTP_OK == connection.getResponseCode()) {
            InputStream is = connection.getInputStream();
            ByteArrayOutputStream os = new ByteArrayOutputStream();
            int data;
            while ((data = is.read()) != -1) {
                os.write(data);
            }
            is.close();
            // Process the XML message.
            handleQueryMsg(new ByteArrayInputStream(os.toByteArray()), hash);
            os.close();
        }
        connection.disconnect();
    } catch (final Exception e) {
        log.error("Exception occured querying the hash.", e);
        WepawetError wepawetError = new WepawetError();
        wepawetError.setCode("-1");
        wepawetError.setMessage(e.getMessage());
        wepawetError.setCreated(new Date());
        // Save the error to the database.
        entityManager.persist(wepawetError);
    }

}

---

From source file:br.com.ufc.palestrasufc.twitter.Util.java

/**
 * Connect to an HTTP URL and return the response as a string.
 * /*from   w w  w .j  a  va 2s  . c o  m*/
 * Note that the HTTP method override is used on non-GET requests. (i.e.
 * requests are made as "POST" with method specified in the body).
 * 
 * @param url - the resource to open: must be a welformed URL
 * @param method - the HTTP method to use ("GET", "POST", etc.)
 * @param params - the query parameter for the URL (e.g. access_token=foo)
 * @return the URL contents as a String
 * @throws MalformedURLException - if the URL format is invalid
 * @throws IOException - if a network problem occurs
 */
public static String openUrl(String url, String method, Bundle params)
        throws MalformedURLException, IOException {
    // random string as boundary for multi-part http post
    String strBoundary = "3i2ndDfv2rTHiSisAbouNdArYfORhtTPEefj3q2f";
    String endLine = "\r\n";

    OutputStream os;

    if (method.equals("GET")) {
        url = url + "?" + encodeUrl(params);
    }
    Log.d("Twitter-Util", method + " URL: " + url);
    HttpURLConnection conn = (HttpURLConnection) new URL(url).openConnection();
    conn.setRequestProperty("User-Agent",
            System.getProperties().getProperty("http.agent") + " TwitterAndroidSDK");
    if (!method.equals("GET")) {
        Bundle dataparams = new Bundle();
        for (String key : params.keySet()) {
            if (params.getByteArray(key) != null) {
                dataparams.putByteArray(key, params.getByteArray(key));
            }
        }

        // use method override
        if (!params.containsKey("method")) {
            params.putString("method", method);
        }

        if (params.containsKey("access_token")) {
            String decoded_token = URLDecoder.decode(params.getString("access_token"));
            params.putString("access_token", decoded_token);
        }

        conn.setRequestMethod("POST");
        conn.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + strBoundary);
        conn.setDoOutput(true);
        conn.setDoInput(true);
        conn.setRequestProperty("Connection", "Keep-Alive");
        conn.connect();
        os = new BufferedOutputStream(conn.getOutputStream());

        os.write(("--" + strBoundary + endLine).getBytes());
        os.write((encodePostBody(params, strBoundary)).getBytes());
        os.write((endLine + "--" + strBoundary + endLine).getBytes());

        if (!dataparams.isEmpty()) {

            for (String key : dataparams.keySet()) {
                os.write(("Content-Disposition: form-data; filename=\"" + key + "\"" + endLine).getBytes());
                os.write(("Content-Type: content/unknown" + endLine + endLine).getBytes());
                os.write(dataparams.getByteArray(key));
                os.write((endLine + "--" + strBoundary + endLine).getBytes());

            }
        }
        os.flush();
    }

    String response = "";
    try {
        response = read(conn.getInputStream());
    } catch (FileNotFoundException e) {
        // Error Stream contains JSON that we can parse to a FB error
        response = read(conn.getErrorStream());
    }
    return response;
}

---

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