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:Main.java

/**
 * Send the Http's request with the address of url
 * @param String url//from   w w w . jav a  2 s.com
 * @return String
 */
public static String getHttpRequest(String url) {
    //should use the StringBuilder or StringBuffer, String is not used.
    StringBuffer jsonContent = new StringBuffer();
    try {
        URL getUrl = new URL(url);
        HttpURLConnection connection = (HttpURLConnection) getUrl.openConnection();
        connection.connect();
        //Getting the inputting stream, and then read the stream.
        BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
        String lines = "";
        while ((lines = reader.readLine()) != null) {
            jsonContent.append(lines);
        }
        reader.close();
        connection.disconnect();
    } catch (Exception e) {
        e.printStackTrace();
    }
    //ScanningActivity.log("getHttpRequest(): " + content);
    //BooksPutIn.log("getHttpRequest(): " + content);
    return jsonContent.toString();
}

From source file:com.dianping.phoenix.dev.core.tools.generator.stable.GitRepositoryListGenerator.java

private static String curl(String url) throws Exception {
    URL reqUrl = new URL(url);
    HttpURLConnection conn = (HttpURLConnection) reqUrl.openConnection();
    conn.setRequestMethod("GET");
    conn.setConnectTimeout(3000);/*from  w w  w.  j a v  a 2 s .c o m*/
    System.out.println(url);
    return IOUtils.toString(new InputStreamReader(conn.getInputStream(), "UTF-8"));
}

From source file:dev.meng.wikidata.util.http.HttpUtils.java

public static JSONObject queryForJSONResponse(URL url, String encoding)
        throws ProtocolException, IOException, StringConvertionException {
    JSONObject response = null;/*w w w  . ja va2  s  .co  m*/

    HttpURLConnection connection = (HttpURLConnection) url.openConnection();
    connection.setRequestMethod("GET");
    connection.connect();

    if (connection.getResponseCode() == 200) {
        response = new JSONObject(StringUtils.inputStreamToString(connection.getInputStream(), encoding));
    } else {
        throw new IOException("Error in opening: " + url + ", " + connection.getResponseCode() + " "
                + connection.getResponseMessage());
    }

    return response;
}

From source file:com.isol.app.tracker.Utilita.java

public static String getHttpData(String url) throws IOException, MalformedURLException {
    HttpURLConnection conn = (HttpURLConnection) new URL(url).openConnection();

    InputStream in = conn.getInputStream();

    try {//ww  w. jav a2  s  .co  m
        StringBuilder sb = new StringBuilder();
        BufferedReader r = new BufferedReader(new InputStreamReader(new DoneHandlerInputStream(in)));
        for (String line = r.readLine(); line != null; line = r.readLine()) {
            sb.append(line);
        }

        r.close();
        return sb.toString();
    } finally {
        in.close();
    }
}

From source file:me.prokopyl.commandtools.migration.UUIDFetcher.java

static public Map<String, UUID> fetch(List<String> names) throws IOException {
    Map<String, UUID> uuidMap = new HashMap<String, UUID>();
    HttpURLConnection connection = createConnection();

    writeBody(connection, names);//from  w  w  w  .jav  a 2s  . co m

    JSONArray array;
    try {
        array = (JSONArray) jsonParser.parse(new InputStreamReader(connection.getInputStream()));
    } catch (ParseException ex) {
        throw new IOException("Invalid response from server, unable to parse received JSON : " + ex.toString());
    }

    for (Object profile : array) {
        JSONObject jsonProfile = (JSONObject) profile;
        String id = (String) jsonProfile.get("id");
        String name = (String) jsonProfile.get("name");
        uuidMap.put(name, fromMojangUUID(id));
    }

    return uuidMap;
}

From source file:Main.java

public static int getRequest(String link) throws IOException {
    URL url = new URL(link);
    HttpURLConnection connection = (HttpURLConnection) url.openConnection();
    System.out.println(connection.getResponseCode());
    if (connection.getResponseCode() == HttpURLConnection.HTTP_OK || connection.getResponseCode() == 302) {
        InputStream is = connection.getInputStream();
        setParsedString(convertInputStreamToString(is));
    }/*from   w ww  . j  av  a  2 s.com*/
    return connection.getResponseCode();
}

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);//  www.j a  v  a2s.  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:software.uncharted.util.HTTPUtil.java

public static String get(String url) throws IOException {
    URL obj = new URL(url);
    HttpURLConnection con = (HttpURLConnection) obj.openConnection();

    // optional default is GET
    con.setRequestMethod("GET");

    BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream()));
    String inputLine;// w  ww .j ava2  s.  c om
    StringBuffer response = new StringBuffer();

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

    return response.toString();
}

From source file:Main.java

public static byte[] downloadImage(final URL url) {
    InputStream in = null;/*from www .j  a  v  a 2  s .  c o m*/
    int responseCode = -1;

    try {
        final HttpURLConnection con = (HttpURLConnection) url.openConnection();
        con.setDoInput(true);
        con.connect();
        responseCode = con.getResponseCode();
        if (responseCode == HttpURLConnection.HTTP_OK) {
            in = con.getInputStream();
            return getByteFromInputStream(in);
        }
    } catch (final IOException e) {
        Log.e(LOG_TAG, "Failed to download image from: " + url.toString(), e);
    }
    return null;
}

From source file:org.kegbot.app.util.Downloader.java

/**
 * Downloads an HTTP resource to an output file.
 *
 * @param url    the resource to download
 * @param output the output file//ww  w  .  j  a  v  a  2  s .  c  o m
 * @throws IOException upon any error
 */
public static void downloadRaw(final String url, final File output) throws IOException {
    final URL destUrl = new URL(url);
    final HttpURLConnection connection = (HttpURLConnection) destUrl.openConnection();

    final FileOutputStream out = new FileOutputStream(output);
    final InputStream input = connection.getInputStream();

    try {
        byte buffer[] = new byte[4096];
        int len;
        while ((len = input.read(buffer)) >= 0) {
            out.write(buffer, 0, len);
        }
    } finally {
        out.close();
        input.close();
    }

}