Example usage for java.net URL openConnection

Introduction

In this page you can find the example usage for java.net URL openConnection.

Prototype

public URLConnection openConnection() throws java.io.IOException

Source Link

Document

Returns a java.net.URLConnection URLConnection instance that represents a connection to the remote object referred to by the URL .

Usage

From source file:Main.java

public static String getJsonContent(String url_path) {
    try {/*  w  w w. j ava2s.  c o  m*/
        URL url = new URL(url_path);
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        connection.setConnectTimeout(3000);
        connection.setRequestMethod("GET");
        connection.setDoInput(true);
        int code = connection.getResponseCode();
        if (code == 200) {
            return changeInputStream(connection.getInputStream());
        }
    } catch (Exception e) {

    }
    return "";
}

From source file:Main.java

/**
 * Send the Http's request with the address of url
 * @param String url//from  w w  w.ja  v  a 2s. c om
 * @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:Main.java

public static long downloadFileFromUrl(String urlPath, File file) {
    long size = 0;
    try {/*ww  w  .j  ava2  s  . c  o m*/
        URL url = new URL(urlPath);
        HttpURLConnection httpurlconnection = (HttpURLConnection) url.openConnection();
        BufferedInputStream bufferedinputstream = new BufferedInputStream(httpurlconnection.getInputStream());
        BufferedOutputStream bufferedoutputstream = new BufferedOutputStream(new FileOutputStream(file));
        int i;
        while ((i = bufferedinputstream.read()) != -1) {
            bufferedoutputstream.write(i);
        }
        bufferedinputstream.close();
        bufferedoutputstream.close();
        httpurlconnection.disconnect();
        size = file.length();
    } catch (Exception e) {
        e.printStackTrace();
    }
    return size;
}

From source file:Main.java

public static Bitmap getBitmapFromURL(String urlStr) {
    Bitmap bitmap = null;/*from   ww  w  .  j  a  v a2s.  com*/
    try {
        URL url = new URL(urlStr);

        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        connection.setDoInput(true);
        connection.connect();

        InputStream input = connection.getInputStream();
        bitmap = BitmapFactory.decodeStream(input);
    } catch (IOException e) {
        Log.e(LOG_TAG, "cannot get the image from link :" + urlStr);
    }
    return bitmap;
}

From source file:com.bdaum.zoom.net.core.internal.Activator.java

public static InputStream openStream(String url, int timeout)
        throws MalformedURLException, IOException, HttpException {
    URL u = new URL(url);
    URLConnection con = u.openConnection();
    con.setConnectTimeout(timeout);//  w w w . j av  a 2  s  . co m
    con.setReadTimeout(timeout);
    try {
        return new BufferedInputStream(con.getInputStream());
    } catch (IOException e) {
        int responseCode = -1;
        if (con instanceof HttpURLConnection)
            responseCode = ((HttpURLConnection) con).getResponseCode();
        else if (con instanceof HttpsURLConnection)
            responseCode = ((HttpsURLConnection) con).getResponseCode();
        if (responseCode >= 0 && responseCode != HttpStatus.SC_OK)
            throw new HttpException(getStatusText(responseCode), e);
        throw e;
    }
}

From source file:Main.java

public static String SimpleHttp(String urlStr) throws Exception {

    URL url = new URL(urlStr);
    HttpURLConnection conn = (HttpURLConnection) url.openConnection();

    int resCode = conn.getResponseCode();
    InputStream input = null;// ww w  . j  a v  a2  s  .com
    String result = null;
    if (resCode == 200) {
        input = conn.getInputStream();
        result = toString(input);
        input.close();
        conn.disconnect();
    } else {
        throw new Exception("connect failed");
    }

    return result;
}

From source file:net.foxgenesis.helper.SiteReader.java

private static BufferedReader getStream(URL url) throws IOException {
    URLConnection connection = url.openConnection();
    connection.setRequestProperty("User-Agent", "X-ServerStats");
    connection.setReadTimeout(5000);//  www.  j a v  a2s .  c  o  m
    return new BufferedReader(new InputStreamReader(connection.getInputStream()));
}

From source file:Main.java

public static String request(String httpUrl, String httpArg) {
    BufferedReader reader = null;
    String result = null;//from  w w  w  .  j a  v  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 String accessToFlashAir(String uri) throws IOException {
    URL url = new URL(uri);
    HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();

    String result = null;/*www .ja  v  a  2s. c  o  m*/
    try {
        InputStream in = new BufferedInputStream(urlConnection.getInputStream());
        result = inputStreamToString(in);
        in.close();
    } finally {
        urlConnection.disconnect();
    }

    return result;
}

From source file:Main.java

public static String readTextFromURL(String urlString) throws IOException {

    HttpURLConnection urlConnection = null;

    URL url = new URL(urlString);

    urlConnection = (HttpURLConnection) url.openConnection();

    urlConnection.setRequestMethod("GET");
    urlConnection.setReadTimeout(10000 /* milliseconds */);
    urlConnection.setConnectTimeout(15000 /* milliseconds */);

    urlConnection.setDoOutput(true);/*w  ww. j a  v a 2s.com*/

    urlConnection.connect();

    BufferedReader br = new BufferedReader(new InputStreamReader(url.openStream()));

    char[] buffer = new char[1024];

    String jsonString = new String();

    StringBuilder sb = new StringBuilder();
    String line;
    while ((line = br.readLine()) != null) {
        sb.append(line + "\n");
    }
    br.close();

    return sb.toString();
}