Example usage for java.net HttpURLConnection disconnect

Introduction

In this page you can find the example usage for java.net HttpURLConnection disconnect.

Prototype

public abstract void disconnect();

Source Link

Document

Indicates that other requests to the server are unlikely in the near future.

Usage

From source file:com.gallatinsystems.common.util.S3Util.java

public static boolean put(String bucketName, String objectKey, byte[] data, String contentType,
        boolean isPublic, String awsAccessId, String awsSecretKey) throws IOException {

    final byte[] md5Raw = MD5Util.md5(data);
    final String md5Base64 = Base64.encodeBase64String(md5Raw).trim();
    final String md5Hex = MD5Util.toHex(md5Raw);
    final String date = getDate();
    final String payloadStr = isPublic ? PUT_PAYLOAD_PUBLIC : PUT_PAYLOAD_PRIVATE;
    final String payload = String.format(payloadStr, md5Base64, contentType, date, bucketName, objectKey);
    final String signature = MD5Util.generateHMAC(payload, awsSecretKey);
    final URL url = new URL(String.format(S3_URL, bucketName, objectKey));

    OutputStream out = null;// ww  w .j  av  a 2 s .  c o  m
    HttpURLConnection conn = null;
    try {
        conn = (HttpURLConnection) url.openConnection();
        conn.setDoOutput(true);
        conn.setRequestMethod("PUT");
        conn.setRequestProperty("Content-MD5", md5Base64);
        conn.setRequestProperty("Content-Type", contentType);
        conn.setRequestProperty("Date", date);

        if (isPublic) {
            // If we don't send this header, the object will be private by default
            conn.setRequestProperty("x-amz-acl", "public-read");
        }

        conn.setRequestProperty("Authorization", "AWS " + awsAccessId + ":" + signature);

        out = new BufferedOutputStream(conn.getOutputStream());

        IOUtils.copy(new ByteArrayInputStream(data), out);
        out.flush();

        int status = conn.getResponseCode();
        if (status != 200 && status != 201) {
            log.severe("Error uploading file: " + url.toString());
            log.severe(IOUtils.toString(conn.getInputStream()));
            return false;
        }
        String etag = conn.getHeaderField("ETag");
        etag = etag != null ? etag.replaceAll("\"", "") : null;// Remove quotes
        if (!md5Hex.equals(etag)) {
            log.severe("ETag comparison failed. Response ETag: " + etag + "Locally computed MD5: " + md5Hex);
            return false;
        }
        return true;
    } finally {
        if (conn != null) {
            conn.disconnect();
        }
        IOUtils.closeQuietly(out);
    }
}

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From source file:com.audiokernel.euphonyrmt.cover.AbstractWebCover.java

/**
 * Use a connection instead of httpClient to be able to handle redirection
 * Redirection are needed for MusicBrainz web services.
 *
 * @param request The web service request
 * @return The web service response//w w  w .  j av  a 2  s.  co  m
 */
protected String executeGetRequestWithConnection(final String request) {

    final URL url = CoverManager.buildURLForConnection(request);
    final HttpURLConnection connection = CoverManager.getHttpConnection(url);
    String result = null;
    InputStream inputStream = null;

    if (CoverManager.doesUrlExist(connection)) {
        /** TODO: After minSdkVersion="19" use try-with-resources here. */
        try {
            inputStream = connection.getInputStream();
            result = readInputStream(inputStream);
        } catch (final IOException e) {
            Log.e(TAG, "Failed to execute cover get request.", e);
        } finally {
            if (connection != null) {
                connection.disconnect();
            }
            try {
                if (inputStream != null) {
                    inputStream.close();
                }
            } catch (final IOException e) {
                Log.e(TAG, "Failed to close input stream from get request.", e);
            }
        }
    }
    return result;
}

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From source file:eu.falcon.fusion.ScheduledFusionTask.java

@Scheduled(fixedRate = 50000)
public void reportCurrentTime() {
    System.out.println("The time is now " + dateFormat.format(new Date()));
    InputStream inputStream;/* ww  w  .  j a  v  a 2  s .  c  om*/
    String jsonldToSaveToMongoAndFuseki = "";

    //doo rest call
    try {

        URL url = new URL("http://localhost:8083");
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        conn.setRequestMethod("GET");
        conn.setRequestProperty("Accept", "application/ld+json");

        if (conn.getResponseCode() != 200) {
            throw new RuntimeException("Failed : HTTP error code : " + conn.getResponseCode());
        }

        BufferedReader br = new BufferedReader(new InputStreamReader((conn.getInputStream())));

        String output;
        System.out.println("Output from Server .... \n");
        while ((output = br.readLine()) != null) {
            System.out.println(output);
            jsonldToSaveToMongoAndFuseki += output;
        }

        conn.disconnect();

        inputStream = new ByteArrayInputStream(jsonldToSaveToMongoAndFuseki.getBytes(StandardCharsets.UTF_8));
        //inputStream = new FileInputStream("/home/eleni/NetBeansProjects/falcon-data-management/fusion/src/main/resources/sensorData.json");

        String serviceURI = "http://localhost:3030/ds/data";
        //DatasetAccessorFactory factory = null;
        DatasetAccessor accessor;
        accessor = DatasetAccessorFactory.createHTTP(serviceURI);
        Model m = ModelFactory.createDefaultModel();
        String base = "http://test-projects.com/";
        m.read(inputStream, base, "JSON-LD");
        //accessor.putModel(m);
        accessor.add(m);
        inputStream.close();
    } catch (IOException ex) {
        Logger.getLogger(FusionApplication.class.getName()).log(Level.SEVERE, null, ex);
    }

    DBObject dbObject = (DBObject) JSON.parse(jsonldToSaveToMongoAndFuseki);

    mongoTemplate.insert(dbObject, "sensorMeasurement");

}

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From source file:com.facebook.samples.musicdashboard.MusicFetcher.java

void downloadUrlToFilePath(String urlSpec, File file) throws IOException {
    URL url = new URL(urlSpec);
    HttpURLConnection connection = (HttpURLConnection) url.openConnection();
    FileOutputStream out = null;/*from   w  ww  . ja v  a  2  s.c  o m*/

    try {
        File tempFile = File.createTempFile("download", ".jpg", file.getParentFile());
        out = new FileOutputStream(tempFile);
        InputStream in = connection.getInputStream();

        int bytesRead = 0;
        byte[] buffer = new byte[1024];
        while ((bytesRead = in.read(buffer)) > 0) {
            out.write(buffer, 0, bytesRead);
        }
        out.close();
        out = null;
        tempFile.renameTo(file);
    } finally {
        connection.disconnect();
        if (out != null)
            out.close();
    }
}

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From source file:de.thingweb.discovery.TDRepository.java

/**
 * Adds a ThingDescription to Repository
 * //from  w w w  .  ja v  a 2  s . co  m
 * @param content JSON-LD
 * @return key of entry in repository
 * @throws Exception in case of error
 */
public String addTD(byte[] content) throws Exception {
    URL url = new URL("http://" + repository_uri + "/td");
    HttpURLConnection httpCon = (HttpURLConnection) url.openConnection();
    httpCon.setDoOutput(true);
    httpCon.setRequestProperty("content-type", "application/ld+json");
    httpCon.setRequestMethod("POST");
    OutputStream out = httpCon.getOutputStream();
    out.write(content);
    out.close();

    InputStream is = httpCon.getInputStream();
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    int b;
    while ((b = is.read()) != -1) {
        baos.write(b);
    }

    int responseCode = httpCon.getResponseCode();

    httpCon.disconnect();

    String key = ""; // new String(baos.toByteArray());

    if (responseCode != 201) {
        // error
        throw new RuntimeException("ResponseCodeError: " + responseCode);
    } else {
        Map<String, List<String>> hf = httpCon.getHeaderFields();
        List<String> los = hf.get("Location");
        if (los != null && los.size() > 0) {
            key = los.get(0);
        }
    }

    return key;
}

---

From source file:com.google.bazel.example.android.activities.MainActivity.java

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();

    if (id == R.id.action_ping) {
        new AsyncTask<String, Void, String>() {
            public static final int READ_TIMEOUT_MS = 5000;
            public static final int CONNECTION_TIMEOUT_MS = 2000;

            private String inputStreamToString(InputStream stream) throws IOException {
                StringBuilder result = new StringBuilder();
                try {
                    BufferedReader reader = new BufferedReader(new InputStreamReader(stream, "UTF-8"));
                    String line;//ww w  .  ja v  a2 s . co m
                    while ((line = reader.readLine()) != null) {
                        result.append(line);
                    }
                } finally {
                    stream.close();
                }
                return result.toString();
            }

            private HttpURLConnection getConnection(String url) throws IOException {
                URLConnection urlConnection = new URL(url).openConnection();
                urlConnection.setConnectTimeout(CONNECTION_TIMEOUT_MS);
                urlConnection.setReadTimeout(READ_TIMEOUT_MS);
                return (HttpURLConnection) urlConnection;
            }

            @Override
            protected String doInBackground(String... params) {
                String url = params[0];
                HttpURLConnection connection = null;
                try {
                    connection = getConnection(url);
                    return new JSONObject(inputStreamToString(connection.getInputStream()))
                            .getString("requested");
                } catch (IOException e) {
                    Log.e("background", "IOException", e);
                    return null;
                } catch (JSONException e) {
                    Log.e("background", "JSONException", e);
                    return null;
                } finally {
                    if (connection != null) {
                        connection.disconnect();
                    }
                }
            }

            @Override
            protected void onPostExecute(String result) {
                TextView textView = (TextView) findViewById(R.id.text_view);
                if (result == null) {
                    Toast.makeText(MainActivity.this, getString(R.string.error_sending_request),
                            Toast.LENGTH_LONG).show();
                    textView.setText("???");
                    return;
                }
                textView.setText(result);
            }
        }.execute("http://10.0.2.2:8080/boop");
        return true;
    }

    return super.onOptionsItemSelected(item);
}

---

From source file:mobi.espier.lgc.data.UploadHelper.java

private String doHttpPostAndGetResponse(String url, byte[] data) {
    if (TextUtils.isEmpty(url) || data == null || data.length < 1) {
        return null;
    }/* ww w. j  a va2 s  .  c  o  m*/

    String response = null;
    try {
        HttpURLConnection conn = (HttpURLConnection) new URL(url).openConnection();
        conn.setConnectTimeout(30000);
        conn.setReadTimeout(30000);
        conn.setRequestMethod("POST");
        conn.setDoOutput(true);
        conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
        conn.setRequestProperty("Content-Length", String.valueOf(data.length));
        OutputStream outStream = conn.getOutputStream();
        outStream.write(data);

        int mResponseCode = conn.getResponseCode();
        if (mResponseCode == 200) {
            response = getHttpResponse(conn);
        }
        conn.disconnect();
    } catch (UnknownHostException e) {
        e.printStackTrace();
    } catch (SocketTimeoutException e) {
        e.printStackTrace();
    } catch (Exception e) {
        e.printStackTrace();
    }

    return response;
}

---

From source file:org.akvo.flow.api.FlowApi.java

private String httpGet(String url) throws IOException, ApiException {
    HttpURLConnection conn = (HttpURLConnection) (new URL(url).openConnection());
    final long t0 = System.currentTimeMillis();
    try {/*from  w  w  w  . j  a va 2 s .co m*/
        int status = getStatusCode(conn);
        if (status != HttpStatus.SC_OK) {
            throw new ApiException(conn.getResponseMessage(), status);
        }
        InputStream in = new BufferedInputStream(conn.getInputStream());
        String response = readStream(in);
        Log.d(TAG, "Request time: " + (System.currentTimeMillis() - t0) + ". URL: " + url);
        return response;
    } finally {
        if (conn != null) {
            conn.disconnect();
        }
    }
}

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From source file:com.centurylink.mdw.ant.taskdef.HttpTransfer.java

protected void download(URL srcURL, File file) {
    try {/* ww w  .  j a v a 2 s .c  om*/
        log("source url... " + srcURL.toString());
        HttpURLConnection conn = (HttpURLConnection) srcURL.openConnection();

        HttpURLConnection.setFollowRedirects(true);
        FileOutputStream fos = new FileOutputStream(file);
        log("Downloading ... " + file);

        byte[] buffer = new byte[2048];
        InputStream is = conn.getInputStream();
        while (true) {
            int bytesRead = is.read(buffer);
            if (bytesRead == -1)
                break;
            fos.write(buffer, 0, bytesRead);
        }
        fos.close();
        is.close();
        conn.disconnect();
        log("Downloaded ... " + file);
    } catch (IOException e) {
        String msg = "Unable to connect to URL: " + srcURL + " - Unable to download file. ";
        if (isFailOnError())
            throw new BuildException(msg + e.getMessage());
        else
            log(msg);
    }
}

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From source file:com.meetingninja.csse.database.NotesDatabaseAdapter.java

public static String createNote(Note n) throws Exception {
    // Server URL setup
    String _url = getBaseUri().build().toString();

    // Establish connection
    URL url = new URL(_url);
    HttpURLConnection conn = (HttpURLConnection) url.openConnection();

    // add request header
    conn.setRequestMethod(IRequest.POST);
    //addRequestHeader(conn, true);

    // prepare POST payload
    ByteArrayOutputStream json = new ByteArrayOutputStream();
    // this type of print stream allows us to get a string easily
    PrintStream ps = new PrintStream(json);
    // Create a generator to build the JSON string
    JsonGenerator jgen = JFACTORY.createGenerator(ps, JsonEncoding.UTF8);

    // Build JSON Object
    jgen.writeStartObject();//from www.  j  a va 2  s  .co  m
    jgen.writeStringField(Keys.Note.CREATED_BY, n.getCreatedBy());
    jgen.writeStringField(Keys.Note.TITLE, n.getTitle());
    jgen.writeStringField(Keys.Note.DESC, n.getDescription());
    jgen.writeStringField(Keys.Note.CONTENT, n.getContent());
    jgen.writeStringField(Keys.Note.UPDATED, n.getDateCreated());
    jgen.writeEndObject();
    jgen.close();

    // Get JSON Object payload from print stream
    String payload = json.toString("UTF8");
    Log.d("CREATENOTE_payload", payload);
    ps.close();

    // Send payload
    int responseCode = sendPostPayload(conn, payload);
    String response = getServerResponse(conn);
    Log.d("CREATENOTE_response", response);

    String ID = "";
    if (!response.isEmpty()) {
        JsonNode tree = MAPPER.readTree(response);
        if (!tree.has(Keys.Note.ID))
            ID = "-1";
        else
            ID = tree.get(Keys.Note.ID).asText();
    }

    conn.disconnect();
    return ID;
}

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