Example usage for java.net URL openConnection

List of usage examples for java.net URL openConnection

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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:cz.mgn.mediservice.rest.Loader.java

protected static String load(String request) {
    String result = null;/*from  ww  w . j ava 2  s.  c o  m*/

    try {
        URL url = new URL(SERVER_URL + "?" + request);

        URLConnection con = url.openConnection();
        result = IOUtils.toString(con.getInputStream(), "UTF-8");
    } catch (IOException ex) {
        Logger.getLogger(Loader.class.getName()).log(Level.SEVERE, null, ex);
    }

    return result;
}

From source file:emily.command.fun.CatFactCommand.java

public static String getCatFact() {
    try {//from w ww. ja  v  a 2 s .  com
        URL loginurl = new URL("https://catfact.ninja/fact");
        URLConnection yc = loginurl.openConnection();
        yc.setConnectTimeout(10 * 1000);
        BufferedReader in = new BufferedReader(new InputStreamReader(yc.getInputStream()));
        String inputLine = in.readLine();
        JsonParser parser = new JsonParser();
        JsonObject array = parser.parse(inputLine).getAsJsonObject();
        return ":cat:  " + array.get("fact").getAsString();
    } catch (Exception e) {
        System.out.println(e);
    }
    return null;
}

From source file:Main.java

public static String getResponseInFile(String address, File file) throws IOException {
    String dataString = "";

    InputStream inputStream = null;
    OutputStream outputStream = null;
    try {//  w  w  w.  j a  v  a 2 s . c  om
        URL url = new URL(address);
        URLConnection connection = url.openConnection();

        inputStream = connection.getInputStream();

        byte[] data;
        if (inputStream.available() > BUFFER_SIZE) {
            data = new byte[BUFFER_SIZE];
        } else {
            data = new byte[inputStream.available()];
        }

        int dataCount;
        while ((dataCount = inputStream.read(data)) > 0) {
            outputStream.write(data, 0, dataCount);
        }

        OutputStream output = new OutputStream() {
            private StringBuilder string = new StringBuilder();

            @Override
            public void write(int b) throws IOException {
                this.string.append((char) b);
            }

            //Netbeans IDE automatically overrides this toString()
            public String toString() {
                return this.string.toString();
            }
        };
        output.write(data);

        dataString = output.toString();

    } finally {
        try {
            inputStream.close();
        } catch (Exception e) {
        }
        try {
            outputStream.close();
        } catch (Exception e) {
        }
    }

    return dataString;
}

From source file:com.prodyna.liferay.devcon.hystrix.demo.service.ChuckNorrisFactsServiceClient.java

/**
 * Call Chuck Norris facts service using simple {@link HttpURLConnection}.
 * //from w ww  .  j a v  a2  s  . co  m
 * @return Fact about Chuck Norris.
 * @throws IOException
 *             is thrown if the service could not be called for some reason.
 */
public static String callChuckNorrisFactsService() throws IOException {
    URL url = new URL(CHUCK_NORRIS_SERVICE_ENDPOINT);

    HttpURLConnection connection = (HttpURLConnection) url.openConnection();
    InputStream inputStream = connection.getInputStream();

    String response = IOUtils.toString(inputStream);

    JSONObject jsonResponse = new JSONObject(response);
    String chuckNorrisFact = jsonResponse.getString("fact");

    return chuckNorrisFact;
}

From source file:editor.util.URLUtil.java

public static String readText(String uri) {
    String res = "";
    try {//from  ww  w  . ja  v a  2 s . c  om
        java.net.URL url = new java.net.URL(uri);
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        InputStream in = connection.getInputStream();
        byte buff[] = new byte[200];
        int ch;
        while ((ch = in.read(buff)) != -1)
            res += new String(buff, 0, ch);
        in.close();

        return res;
    } catch (Exception e) {
        return e.getLocalizedMessage();
    }
}

From source file:Main.java

/** Downloads a file from the specified URL and stores the file to the specified location 
 * @param fileUrl the URL from which the file should be downloaded
 * @param storageLocation the location to which the downloaded file should be stored. If the file exists, it will
 * be overridden! /*from  www .ja  va 2s.  c  om*/
 * @throws IOException */
public static void downloadFileFromWebserver(String fileUrl, String storageLocation) throws IOException {
    URL url = new URL(fileUrl);
    File file = new File(storageLocation);

    URLConnection urlConnection = url.openConnection();
    InputStream inputStream = urlConnection.getInputStream();
    BufferedInputStream bufferedInputStream = new BufferedInputStream(inputStream);
    FileOutputStream fileOutputStream = new FileOutputStream(file);

    byte[] buffer = new byte[1024];
    int bytesInBuffer = 0;
    while ((bytesInBuffer = bufferedInputStream.read(buffer)) != -1) {
        fileOutputStream.write(buffer, 0, bytesInBuffer);
    }

    fileOutputStream.close();
}

From source file:Yak_Hax.Yak_Hax_Mimerme.PostRequest.java

public static String PostBodyRequest(String URL, String JSONRaw, String UserAgent) throws IOException {
    String type = "application/json";
    URL u = new URL(URL);
    HttpURLConnection conn = (HttpURLConnection) u.openConnection();
    conn.setDoOutput(true);/*from w w  w. j  a v  a2 s . c  o  m*/
    conn.setRequestMethod("POST");
    conn.setRequestProperty("Content-Type", type);
    conn.setRequestProperty("User-Agent", UserAgent);
    OutputStream os = conn.getOutputStream();
    os.write(JSONRaw.getBytes());
    os.flush();
    os.close();

    String response = null;
    DataInputStream input = new DataInputStream(conn.getInputStream());
    while (null != ((response = input.readLine()))) {
        input.close();
        return response;
    }
    return null;
}

From source file:Main.java

public static String post(String url, Map<String, String> params) {
    try {//w ww .ja va  2  s .c om
        URL u = new URL(url);
        HttpURLConnection connection = (HttpURLConnection) u.openConnection();
        connection.setDoInput(true);
        connection.setDoOutput(true);
        connection.setRequestMethod("POST");
        connection.setUseCaches(false);
        PrintWriter pw = new PrintWriter(connection.getOutputStream());
        StringBuilder sbParams = new StringBuilder();
        if (params != null) {
            for (String key : params.keySet()) {
                sbParams.append(key + "=" + params.get(key) + "&");
            }
        }
        if (sbParams.length() > 0) {
            String strParams = sbParams.substring(0, sbParams.length() - 1);
            Log.e("cat", "strParams:" + strParams);
            pw.write(strParams);
            pw.flush();
            pw.close();
        }
        BufferedReader br = new BufferedReader(new InputStreamReader(connection.getInputStream()));
        StringBuffer response = new StringBuffer();
        String readLine = "";
        while ((readLine = br.readLine()) != null) {
            response.append(readLine);
        }
        br.close();
        return response.toString();
    } catch (Exception e) {
        e.printStackTrace();
        return null;
    }
}

From source file:Main.java

public static int sendMessage(String auth_token, String registrationId, String message) throws IOException {

    StringBuilder postDataBuilder = new StringBuilder();
    postDataBuilder.append(PARAM_REGISTRATION_ID).append("=").append(registrationId);
    postDataBuilder.append("&").append(PARAM_COLLAPSE_KEY).append("=").append("0");
    postDataBuilder.append("&").append("data.payload").append("=")
            .append(URLEncoder.encode("Lars war hier", UTF8));

    byte[] postData = postDataBuilder.toString().getBytes(UTF8);

    // Hit the dm URL.

    URL url = new URL("https://android.clients.google.com/c2dm/send");
    HttpURLConnection conn = (HttpURLConnection) url.openConnection();
    conn.setDoOutput(true);//from   w w w  .ja v a2  s  .  c  o  m
    conn.setUseCaches(false);
    conn.setRequestMethod("POST");
    conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded;charset=UTF-8");
    conn.setRequestProperty("Content-Length", Integer.toString(postData.length));
    conn.setRequestProperty("Authorization", "GoogleLogin auth=" + auth_token);

    OutputStream out = conn.getOutputStream();
    out.write(postData);
    out.close();

    int responseCode = conn.getResponseCode();
    return responseCode;
}

From source file:Main.java

@Nullable
private static InputStream getStreamFromUri(Uri selectedImageURI, Context theContext) throws IOException {
    switch (selectedImageURI.getScheme()) {
    case "content":
        return theContext.getContentResolver().openInputStream(selectedImageURI);

    case "file":
        return new FileInputStream(new File(URI.create(selectedImageURI.toString())));

    case "http":
        // Fall through
    case "https":
        final URL url = new URL(selectedImageURI.toString());
        final HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        connection.setDoInput(true);/*from w  w w.ja v  a 2s . co  m*/
        connection.connect();
        return connection.getInputStream();

    default:
        Log.w(TAG, "getStreamFromUri(): unsupported Uri scheme: " + selectedImageURI.getScheme());
        return null;
    }
}