Example usage for java.net HttpURLConnection getInputStream

Introduction

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

Prototype

public InputStream getInputStream() throws IOException 

Source Link

Document

Returns an input stream that reads from this open connection.

Usage

From source file:core.Utility.java

public static ArrayList<String> getWikiText(String _word) throws MalformedURLException, IOException {
    ArrayList<String> _list = new ArrayList();
    try {/*from  www  .  j  a  v  a  2 s  . com*/

        URL url = new URL("http://en.wiktionary.org/w/api.php" + "?action=parse" + "&prop=wikitext" + "&page="
                + _word + "&format=xmlfm");

        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        conn.setRequestMethod("GET");
        conn.setRequestProperty("Accept", "application/json");

        if (conn.getResponseCode() != 200) {
            throw new RuntimeException("Failed : HTTP error code : " + conn.getResponseCode());
        }

        BufferedReader br = new BufferedReader(new InputStreamReader((conn.getInputStream())));

        String output, wikiText = "";
        while ((output = br.readLine()) != null) {
            wikiText += output + "\n";
        }

        conn.disconnect();

    } catch (MalformedURLException e) {
        throw e;
    } catch (IOException e) {
        throw e;
    }
    return _list;
}

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From source file:Main.java

/**
 * On some devices we have to hack://  w  w  w  .ja v a2  s.c  o m
 * http://developers.sun.com/mobility/reference/techart/design_guidelines/http_redirection.html
 * @return the resolved url if any. Or null if it couldn't resolve the url
 * (within the specified time) or the same url if response code is OK
 */
public static String getResolvedUrl(String urlAsString, int timeout) {
    try {
        URL url = new URL(urlAsString);
        //using proxy may increase latency
        HttpURLConnection hConn = (HttpURLConnection) url.openConnection(Proxy.NO_PROXY);
        // force no follow

        hConn.setInstanceFollowRedirects(false);
        // the program doesn't care what the content actually is !!
        // http://java.sun.com/developer/JDCTechTips/2003/tt0422.html
        hConn.setRequestMethod("HEAD");
        // default is 0 => infinity waiting
        hConn.setConnectTimeout(timeout);
        hConn.setReadTimeout(timeout);
        hConn.connect();
        int responseCode = hConn.getResponseCode();
        hConn.getInputStream().close();
        if (responseCode == HttpURLConnection.HTTP_OK)
            return urlAsString;

        String loc = hConn.getHeaderField("Location");
        if (responseCode == HttpURLConnection.HTTP_MOVED_PERM && loc != null)
            return loc.replaceAll(" ", "+");

    } catch (Exception ex) {
    }
    return "";
}

---

From source file:com.cyphermessenger.client.SyncRequest.java

public static void sendMessage(CypherSession session, CypherUser contactUser, CypherMessage message)
        throws IOException, APIErrorException {
    CypherUser user = session.getUser();
    byte[] timestampBytes = Utils.longToBytes(message.getTimestamp());
    int messageIDLong = message.getMessageID();
    Encrypt encryptionCtx = new Encrypt(user.getKey().getSharedSecret(contactUser.getKey()));
    encryptionCtx.updateAuthenticatedData(Utils.longToBytes(messageIDLong));
    encryptionCtx.updateAuthenticatedData(timestampBytes);
    byte[] payload;
    try {/* ww  w. jav  a  2  s . c o m*/
        payload = encryptionCtx.process(message.getText().getBytes());
    } catch (InvalidCipherTextException e) {
        throw new RuntimeException(e);
    }
    HashMap<String, String> pairs = new HashMap<>(6);
    pairs.put("payload", Utils.BASE64_URL.encode(payload));
    pairs.put("contactID", contactUser.getUserID() + "");
    pairs.put("messageID", messageIDLong + "");
    pairs.put("messageTimestamp", message.getTimestamp() + "");
    pairs.put("userKeyTimestamp", session.getUser().getKeyTime() + "");
    pairs.put("contactKeyTimestamp", contactUser.getKeyTime() + "");

    HttpURLConnection conn = doRequest("message", session, pairs);
    if (conn.getResponseCode() != 200) {
        throw new IOException("Server error");
    }

    InputStream in = conn.getInputStream();
    JsonNode node = MAPPER.readTree(in);
    conn.disconnect();
    int statusCode = node.get("status").asInt();
    if (statusCode != StatusCode.OK) {
        throw new APIErrorException(statusCode);
    }
}

---

From source file:com.linkedin.pinot.controller.helix.ControllerTest.java

public static String sendPutRequest(String urlString, String payload) throws IOException {
    LOGGER.info("Sending PUT to " + urlString + " with payload " + payload);
    final long start = System.currentTimeMillis();
    final URL url = new URL(urlString);
    final HttpURLConnection conn = (HttpURLConnection) url.openConnection();
    conn.setDoOutput(true);// w  w w.j  a  va  2  s .com
    conn.setRequestMethod("PUT");
    final BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(conn.getOutputStream(), "UTF-8"));

    writer.write(payload, 0, payload.length());
    writer.flush();

    final BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream(), "UTF-8"));
    final StringBuilder sb = new StringBuilder();
    String line = null;
    while ((line = reader.readLine()) != null) {
        sb.append(line);
    }

    final long stop = System.currentTimeMillis();

    LOGGER.info(" Time take for Request : " + urlString + " in ms:" + (stop - start));

    return sb.toString();
}

---

From source file:com.android.dialer.omni.PlaceUtil.java

/**
 * Executes a post request and return a JSON object
 * @param url The API URL// www. j ava2 s . c om
 * @param data The data to post in POST field
 * @return the JSON object
 * @throws IOException
 * @throws JSONException
 */
public static JSONObject postJsonRequest(String url, String postData) throws IOException, JSONException {
    URL obj = new URL(url);
    HttpURLConnection con = (HttpURLConnection) obj.openConnection();

    con.setRequestMethod("POST");

    if (DEBUG)
        Log.d(TAG, "Posting: " + postData + " to " + url);

    // Send post request
    con.setDoOutput(true);
    DataOutputStream wr = new DataOutputStream(con.getOutputStream());
    wr.writeBytes(postData);
    wr.flush();
    wr.close();

    int responseCode = con.getResponseCode();

    BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream()));
    String inputLine;
    StringBuffer response = new StringBuffer();

    while ((inputLine = in.readLine()) != null) {
        response.append(inputLine);
    }
    in.close();

    JSONObject json = new JSONObject(response.toString());
    return json;
}

---

From source file:com.cyphermessenger.client.SyncRequest.java

public static List<String> findUser(CypherSession session, String username, int limit)
        throws IOException, APIErrorException {
    String[] keys = new String[] { "username", "limit" };
    String[] vals = new String[] { username, limit + "" };

    HttpURLConnection conn = doRequest("find", session, keys, vals);

    if (conn.getResponseCode() != 200) {
        throw new IOException("Server error");
    }/*from  w  w w.j av  a  2 s. com*/

    JsonNode node = MAPPER.readTree(conn.getInputStream());
    conn.disconnect();
    int statusCode = node.get("status").asInt();
    if (statusCode != StatusCode.OK) {
        throw new APIErrorException(statusCode);
    } else {
        return Utils.MAPPER.treeToValue(node.get("users"), ArrayList.class);
    }
}

---

From source file:com.cyphermessenger.client.SyncRequest.java

public static CypherUser registerUser(String username, String password, String captchaValue, Captcha captcha)
        throws IOException, APIErrorException {
    if (!captcha.verify(captchaValue)) {
        throw new APIErrorException(StatusCode.CAPTCHA_INVALID);
    }//from  w  w w . j a v a  2  s  .  c o  m
    username = username.toLowerCase();
    captchaValue = captchaValue.toLowerCase();
    byte[] serverPassword = Utils.cryptPassword(password.getBytes(), username);
    byte[] localPassword = Utils.sha256(password);
    String serverPasswordEncoded = Utils.BASE64_URL.encode(serverPassword);
    ECKey key = new ECKey();
    byte[] publicKey = key.getPublicKey();
    byte[] privateKey = key.getPrivateKey();
    try {
        privateKey = Encrypt.process(localPassword, privateKey);
    } catch (InvalidCipherTextException ex) {
        throw new RuntimeException(ex);
    }
    String[] keys = new String[] { "captchaToken", "captchaValue", "username", "password", "publicKey",
            "privateKey" };
    String[] vals = new String[] { captcha.captchaToken, captchaValue, username, serverPasswordEncoded,
            Utils.BASE64_URL.encode(publicKey), Utils.BASE64_URL.encode(privateKey) };
    HttpURLConnection conn = doRequest("register", null, keys, vals);

    if (conn.getResponseCode() != 200) {
        throw new IOException("Server error");
    }
    InputStream in = conn.getInputStream();
    JsonNode node = MAPPER.readTree(in);
    conn.disconnect();
    int statusCode = node.get("status").asInt();
    if (statusCode == StatusCode.OK) {
        long userID = node.get("userID").asLong();
        long keyTime = node.get("timestamp").asLong();
        key.setTime(keyTime);
        return new CypherUser(username, localPassword, serverPassword, userID, key, keyTime);
    } else {
        throw new APIErrorException(statusCode);
    }
}

---

From source file:com.francetelecom.clara.cloud.paas.it.services.helper.PaasServicesEnvApplicationAccessHelper.java

/**
 * Check if a string appear in the html page
 *
 * @param url/*from ww w  .  j  av  a2s.c  om*/
 *            URL to test
 * @param token
 *            String that must be in html page
 * @return Cookie that identifies the was or null if the test failed. An
 *         empty string means that no cookie was found in the request, but
 *         the check succeeded.
 */
private static String checkStringAndReturnCookie(URL url, String token, String httpProxyHost,
        int httpProxyPort) {
    InputStream is = null;
    String cookie = null;
    try {
        HttpURLConnection connection;
        if (httpProxyHost != null) {
            Proxy proxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress(httpProxyHost, httpProxyPort));
            connection = (HttpURLConnection) url.openConnection(proxy);
        } else {
            connection = (HttpURLConnection) url.openConnection();
        }
        connection.setRequestMethod("GET");

        is = connection.getInputStream();
        // check http status code
        if (connection.getResponseCode() == 200) {
            DataInputStream dis = new DataInputStream(new BufferedInputStream(is));
            StringWriter writer = new StringWriter();
            IOUtils.copy(dis, writer, "UTF-8");
            if (writer.toString().contains(token)) {
                cookie = connection.getHeaderField("Set-Cookie");
                if (cookie == null)
                    cookie = "";
            } else {
                logger.info("URL " + url.getFile() + " returned code 200 but does not contain keyword '" + token
                        + "'");
                logger.debug("1000 first chars of response body: " + writer.toString().substring(0, 1000));
            }
        } else {
            logger.error("URL " + url.getFile() + " returned code " + connection.getResponseCode() + " : "
                    + connection.getResponseMessage());
            if (System.getProperty("http.proxyHost") != null) {
                logger.info("Using proxy=" + System.getProperty("http.proxyHost") + ":"
                        + System.getProperty("http.proxyPort"));
            }
        }
    } catch (IOException e) {
        logger.error("URL test failed: " + url.getFile() + " => " + e.getMessage() + " ("
                + e.getClass().getName() + ")");
        if (System.getProperty("http.proxyHost") != null) {
            logger.info("Using proxy=" + System.getProperty("http.proxyHost") + ":"
                    + System.getProperty("http.proxyPort"));
        }
    } finally {
        try {
            if (is != null) {
                is.close();
            }
        } catch (IOException ioe) {
            // just going to ignore this one
        }
    }
    return cookie;

}

---

From source file:org.LinuxdistroCommunity.android.client.NetworkUtilities.java

public static String getAuthToken(String server, String code) {

    String token = null;//w  ww . j a  va2s .c o m

    final ArrayList<NameValuePair> params = new ArrayList<NameValuePair>();
    params.add(new BasicNameValuePair(PARAM_CODE, code));
    params.add(new BasicNameValuePair(PARAM_CLIENT_SECRET, CLIENT_SECRET));

    InputStream is = null;
    URL auth_token_url;
    try {
        auth_token_url = getRequestURL(server, PATH_OAUTH_ACCESS_TOKEN, params);
        Log.i(TAG, auth_token_url.toString());

        HttpURLConnection conn = (HttpURLConnection) auth_token_url.openConnection();
        conn.setReadTimeout(10000 /* milliseconds */);
        conn.setConnectTimeout(15000 /* milliseconds */);
        conn.setRequestMethod("GET");
        conn.setDoInput(true);
        // Starts the query
        conn.connect();
        int response_code = conn.getResponseCode();
        Log.d(TAG, "The response is: " + response_code);
        is = conn.getInputStream();

        // parse token_response as JSON to get the token out
        String str_response = readStreamToString(is, 500);
        Log.d(TAG, str_response);
        JSONObject response = new JSONObject(str_response);
        token = response.getString("access_token");

    } catch (MalformedURLException e1) {
        // TODO Auto-generated catch block
        e1.printStackTrace();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (JSONException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } finally {
        // Makes sure that the InputStream is closed after the app is
        // finished using it.
        if (is != null) {
            try {
                is.close();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
    }

    Log.i(TAG, token);
    return token;
}

---

From source file:itdelatrisu.opsu.downloads.BloodcatServer.java

/**
 * Returns a JSON object from a URL./*  ww  w  .  j  a  v  a 2  s.c  om*/
 * @param url the remote URL
 * @return the JSON object
 * @author Roland Illig (http://stackoverflow.com/a/4308662)
 */
public static JSONObject readJsonFromUrl(URL url) throws IOException {
    // open connection
    HttpURLConnection conn = (HttpURLConnection) url.openConnection();
    conn.setConnectTimeout(Download.CONNECTION_TIMEOUT);
    conn.setReadTimeout(Download.READ_TIMEOUT);
    conn.setUseCaches(false);
    try {
        conn.connect();
    } catch (SocketTimeoutException e) {
        ErrorHandler.error("Connection to server timed out.", e, false);
        throw e;
    }

    if (Thread.interrupted())
        return null;

    // read JSON
    JSONObject json = null;
    try (InputStream in = conn.getInputStream()) {
        BufferedReader rd = new BufferedReader(new InputStreamReader(in));
        StringBuilder sb = new StringBuilder();
        int c;
        while ((c = rd.read()) != -1)
            sb.append((char) c);
        json = new JSONObject(sb.toString());
    } catch (SocketTimeoutException e) {
        ErrorHandler.error("Connection to server timed out.", e, false);
        throw e;
    } catch (JSONException e1) {
        ErrorHandler.error("Failed to create JSON object.", e1, true);
    }
    return json;
}

---

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