Example usage for java.net HttpURLConnection connect

List of usage examples for java.net HttpURLConnection connect

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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:commonUtils.CommonUtils.java

public static boolean IsExistsLink(String inputLink) {
    try {/*from   w  w w. ja v  a 2  s. c om*/
        URL url = new URL(inputLink);
        HttpURLConnection huc = (HttpURLConnection) url.openConnection();
        huc.setRequestMethod("GET");
        huc.connect();
        System.out.println(huc.getResponseCode());
        if (huc.getResponseCode() == 200) {
            return true;
        }

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

From source file:com.adguard.compiler.UrlUtils.java

public static String downloadString(URL url, String encoding) throws IOException {

    HttpURLConnection connection = null;
    InputStream inputStream = null;

    try {/*from   w  w w. j a  va  2  s  . co m*/
        connection = (HttpURLConnection) url.openConnection();
        connection.connect();
        inputStream = connection.getInputStream();
        return IOUtils.toString(inputStream, encoding);
    } finally {
        IOUtils.closeQuietly(inputStream);
        if (connection != null) {
            connection.disconnect();
        }
    }
}

From source file:Main.java

public static HttpURLConnection openUrlConnection(String url) throws IOException {
    HttpURLConnection conn = (HttpURLConnection) new URL(url).openConnection();
    conn.setUseCaches(false);/* w ww  . ja va  2s .  co  m*/
    conn.setChunkedStreamingMode(0);
    conn.setRequestProperty("User-Agent", USER_AGENT);
    conn.connect();
    return conn;
}

From source file:Main.java

private static String httpGet(String address) {
    InputStream inputStream = null;
    HttpURLConnection httpURLConnection = null;
    try {/*from   w ww .j a  v  a 2s  . c om*/
        URL url = new URL(address);
        httpURLConnection = (HttpURLConnection) url.openConnection();
        httpURLConnection.connect();
        if (httpURLConnection.getResponseCode() == HttpURLConnection.HTTP_OK) {
            inputStream = httpURLConnection.getInputStream();
            int len = 0;
            byte[] buffer = new byte[1024];
            StringBuffer stringBuffer = new StringBuffer();
            while ((len = inputStream.read(buffer)) != -1) {
                stringBuffer.append(new String(buffer, 0, len));
            }
            return stringBuffer.toString();
        }
    } catch (MalformedURLException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        close(inputStream);
        if (httpURLConnection != null) {
            httpURLConnection.disconnect();
        }

    }

    return null;

}

From source file:Main.java

public static InputStream downloadURL(String link) throws IOException {
    URL url = new URL(link);
    HttpURLConnection conn = (HttpURLConnection) url.openConnection();
    conn.setReadTimeout(10000);/*  www  .ja  v  a  2s.com*/
    conn.setConnectTimeout(15000);
    conn.setRequestMethod("GET");
    conn.setDoInput(true);
    conn.connect();
    logInfo("downloadStatus: " + conn.getResponseCode());
    return conn.getInputStream();
}

From source file:Main.java

static public String downloadFile(String downloadUrl, String fileName, String dir) throws IOException {
    URL url = new URL(downloadUrl);
    HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
    urlConnection.setRequestMethod("GET");
    urlConnection.setDoOutput(true);//from   w w w  . ja  v a 2s .  c o m
    urlConnection.connect();
    int code = urlConnection.getResponseCode();
    if (code > 300 || code == -1) {
        throw new IOException("Cannot read url: " + downloadUrl);
    }
    String filePath = prepareFilePath(fileName, dir);
    String tmpFilePath = prepareTmpFilePath(fileName, dir);
    FileOutputStream fileOutput = new FileOutputStream(tmpFilePath);
    BufferedInputStream inputStream = new BufferedInputStream(urlConnection.getInputStream());
    byte[] buffer = new byte[1024];
    int bufferLength;
    while ((bufferLength = inputStream.read(buffer)) > 0) {
        fileOutput.write(buffer, 0, bufferLength);
    }
    fileOutput.close();
    // move tmp to destination
    copyFile(new File(tmpFilePath), new File(filePath));
    return filePath;
}

From source file:Main.java

public static String request(String httpUrl, String httpArg) {
    BufferedReader reader = null;
    String result = null;/*from  ww w.  j av  a 2  s . c o m*/
    StringBuffer sbf = new StringBuffer();
    httpUrl = httpUrl + "?" + httpArg;

    try {
        URL url = new URL(httpUrl);
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        connection.setRequestMethod("GET");
        connection.setRequestProperty("apikey", "2ffbcae4d025b6c109af30d7de2d7c09");
        connection.connect();
        InputStream is = connection.getInputStream();
        reader = new BufferedReader(new InputStreamReader(is, "UTF-8"));
        String strRead = null;
        while ((strRead = reader.readLine()) != null) {
            sbf.append(strRead);
            sbf.append("\r\n");
        }
        reader.close();
        result = sbf.toString();
    } catch (Exception e) {
        e.printStackTrace();
    }
    return result;
}

From source file:Main.java

public static Reader getUri(URL url) throws IOException {
    //Log.d(TAG, "getUri: " + url.toString());

    boolean useGzip = false;
    HttpURLConnection conn = (HttpURLConnection) url.openConnection();
    conn.setReadTimeout(30 * 1000);/*from ww  w . j a  va  2s  .  c o  m*/
    conn.setRequestProperty("Accept-Encoding", "gzip");
    conn.connect();

    InputStream in = conn.getInputStream();

    final Map<String, List<String>> headers = conn.getHeaderFields();
    // This is a map, but we can't assume the key we're looking for
    // is in normal casing. So it's really not a good map, is it?
    final Set<Map.Entry<String, List<String>>> set = headers.entrySet();
    for (Iterator<Map.Entry<String, List<String>>> i = set.iterator(); i.hasNext();) {
        Map.Entry<String, List<String>> entry = i.next();
        if ("Content-Encoding".equalsIgnoreCase(entry.getKey())) {
            for (Iterator<String> j = entry.getValue().iterator(); j.hasNext();) {
                String str = j.next();
                if (str.equalsIgnoreCase("gzip")) {
                    useGzip = true;
                    break;
                }
            }
            // Break out of outer loop.
            if (useGzip) {
                break;
            }
        }
    }

    if (useGzip) {
        return new BufferedReader(new InputStreamReader(new GZIPInputStream(in)), 8 * 1024);
    } else {
        return new BufferedReader(new InputStreamReader(in), 8 * 1024);
    }
}

From source file:net.idlesoft.android.apps.github.utils.GravatarCache.java

private static Bitmap downloadGravatar(final String id) throws IOException {
    final URL aURL = new URL("http://www.gravatar.com/avatar/" + URLEncoder.encode(id) + "?size=100&d=mm");
    final HttpURLConnection conn = (HttpURLConnection) aURL.openConnection();
    conn.setDoInput(true);/*from ww  w.j a  va2 s. c o m*/
    conn.connect();
    final InputStream is = conn.getInputStream();
    final Bitmap bm = BitmapFactory.decodeStream(is);
    is.close();
    return bm;
}

From source file:edu.rit.chrisbitler.ritcraft.slackintegration.rtm.UserList.java

/**
 * Query the slack api to get the list of users and their real names. This is done whenever we can't find an ID mapping,
 * and when the plugin loads/*from www.  j a v  a  2s.co  m*/
 */
public static void queryUsers() {
    try {
        users.clear();
        //Contact the slack api to get the user list
        HttpURLConnection conn = (HttpURLConnection) new URL(
                "https://www.slack.com/api/users.list?token=" + SlackIntegration.BOT_TOKEN).openConnection();
        conn.connect();
        JSONObject retVal = (JSONObject) JSONValue
                .parse(new InputStreamReader((InputStream) conn.getContent()));
        JSONArray members = (JSONArray) retVal.get("members");

        //Loop through the members and add them to the map
        Iterator<JSONObject> iter = members.iterator();
        while (iter.hasNext()) {
            JSONObject obj = iter.next();
            JSONObject profile = (JSONObject) obj.get("profile");
            String id = (String) obj.get("id");
            String realName = (String) profile.get("real_name");
            users.put(id, realName);
        }
    } catch (IOException e) {
        e.printStackTrace();
    }
}