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 boolean download(String uri, String filePath) {
    try {/*from  w w  w. j  a v  a  2s  . c o m*/
        URL url = new URL(uri);
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        conn.setRequestProperty("User-Agent", AGENT);
        readStreamToFile(conn.getInputStream(), filePath);
    } catch (Exception e) {
        e.printStackTrace();
        return false;
    }
    return true;
}

From source file:Main.java

public static Bitmap getBitmapFromUrl(String urlSource) {
    try {/* ww  w  .j a v  a  2s. c  o m*/
        URL url = new URL(urlSource);
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        connection.setDoInput(true);
        connection.connect();
        InputStream input = connection.getInputStream();
        Bitmap myBitmap = BitmapFactory.decodeStream(input);
        return myBitmap;
    } catch (IOException e) {
        e.printStackTrace();
        return null;
    }
}

From source file:Main.java

public static byte[] downloadImage(String imageUrl) {
    if (imageUrl.endsWith(".jpg") || imageUrl.endsWith(".bmp") || imageUrl.endsWith(".png")
            || imageUrl.endsWith(".gif")) {
        try {//  w  w w.  jav  a  2s .  c  om
            URL url = new URL(imageUrl);
            URLConnection urlConn = url.openConnection();
            InputStream is = urlConn.getInputStream();
            BufferedInputStream bis = new BufferedInputStream(is);
            ByteArrayBuffer baf = new ByteArrayBuffer(50);
            int current = 0;

            while ((current = bis.read()) != -1) {
                baf.append((byte) current);
            }

            return baf.toByteArray();
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    return null;
}

From source file:com.jjtree.utilities.JServeletManager.java

public static JSONObject fetchFrom(HttpServletRequest request, String url) {
    JSONObject object = null;/*from   ww  w. j  a v  a2 s.  c  o m*/
    try {
        String serverName = request.getServerName();
        int portNumber = request.getServerPort();
        String contextPath = request.getContextPath();

        String accountUrl = "http://" + serverName + ":" + portNumber + contextPath + url;

        URL urldemo = new URL(accountUrl);
        URLConnection urlCon = urldemo.openConnection();
        BufferedReader in = new BufferedReader(new InputStreamReader(urlCon.getInputStream()));
        String inputLine;
        while ((inputLine = in.readLine()) != null) {
            object = new JSONObject(inputLine);
        }
        in.close();
    } catch (Exception e) {
        System.out.println(e);
    }
    return object;
}

From source file:Main.java

public static String execUrl(String uri) {
    String res = "";
    try {//  ww w .jav  a  2 s .c  om
        URL url = new URL(uri);
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        conn.setRequestProperty("User-Agent", AGENT);

        res = readStream(conn.getInputStream());
    } catch (Exception e) {
        e.printStackTrace();
        res = "";
    }
    return res;
}

From source file:com.digitallizard.bbcnewsreader.resource.web.HtmlParser.java

/**
 * @param args//ww  w .j  av a  2  s.c o m
 * @throws IOException
 * @throws ClientProtocolException
 */
public static byte[] getPage(String stringUrl) throws Exception {
    URL url = new URL(stringUrl);
    URLConnection connection = url.openConnection();

    InputStream stream = connection.getInputStream();
    BufferedInputStream inputbuffer = new BufferedInputStream(stream);

    ByteArrayBuffer arraybuffer = new ByteArrayBuffer(50);
    int current = 0;
    while ((current = inputbuffer.read()) != -1) {
        arraybuffer.append((byte) current);
    }
    return arraybuffer.toByteArray();
}

From source file:Main.java

public static String requestPage(String urlPath) throws Exception {
    URL url = new URL(urlPath);
    HttpURLConnection connection = (HttpURLConnection) url.openConnection();

    int responseCode = connection.getResponseCode();
    if (responseCode != 200) {
        throw new Exception("Error loading page: " + responseCode + connection.getResponseMessage());
    }//from www  .  j  av a2 s  .  c  o m

    BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
    String inputLine;
    String response = "";

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

    in.close();
    return response;
}

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);//from w  w  w  .  j ava 2  s .  c  om
    conn.setConnectTimeout(15000);
    conn.setRequestMethod("GET");
    conn.setDoInput(true);
    conn.connect();
    logInfo("downloadStatus: " + conn.getResponseCode());
    return conn.getInputStream();
}

From source file:Main.java

public static boolean isInternetWorking() {
    boolean success = false;
    try {// w ww  .j  a  v a  2s . com
        URL url = new URL("https://google.com");
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        connection.setConnectTimeout(8000);
        connection.connect();
        success = connection.getResponseCode() == 200;
    } catch (IOException e) {
        e.printStackTrace();
    }
    return success;
}

From source file:Main.java

public static boolean isInternetWorking() {
    boolean success = false;
    try {//  ww w  . j  a  va 2s. c o m
        URL url = new URL("https://google.com");
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        connection.setConnectTimeout(10000);
        connection.connect();
        success = connection.getResponseCode() == 200;
    } catch (IOException e) {
        e.printStackTrace();
    }
    return success;
}