Example usage for java.net HttpURLConnection connect

List of usage examples for java.net HttpURLConnection connect

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Introduction

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

Prototype

public abstract void connect() throws IOException;

Source Link

Document

Opens a communications link to the resource referenced by this URL, if such a connection has not already been established.

Usage

From source file:french_toast_mafia.waitr.MainActivity.java

/** A method to download json data from url */
private String downloadUrl(String strUrl) throws IOException {
    String data = "";
    InputStream iStream = null;/*from   w  ww . j a  v a  2  s. c om*/
    HttpURLConnection urlConnection = null;
    try {
        URL url = new URL(strUrl);

        // Creating an http connection to communicate with url
        urlConnection = (HttpURLConnection) url.openConnection();

        // Connecting to url
        urlConnection.connect();

        // Reading data from url
        iStream = urlConnection.getInputStream();

        BufferedReader br = new BufferedReader(new InputStreamReader(iStream));

        StringBuffer sb = new StringBuffer();

        String line = "";
        while ((line = br.readLine()) != null) {
            sb.append(line);
        }

        data = sb.toString();

        br.close();

    } catch (Exception e) {
        // Log.d("Exception while downloading url", e.toString());
    } finally {
        iStream.close();
        urlConnection.disconnect();
    }

    return data;
}

From source file:com.example.ronald.tracle.RegistrationIntentService.java

private String downloadContent(String myurl) throws IOException {
    InputStream is = null;//from   ww w .  j  a  v a  2 s  .  c o  m
    int length = 500;

    try {
        URL url = new URL(myurl);
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        conn.setReadTimeout(10000 /* milliseconds */);
        conn.setConnectTimeout(15000 /* milliseconds */);
        conn.setRequestMethod("GET");
        conn.setDoInput(true);
        conn.connect();
        int response = conn.getResponseCode();
        Log.d(TAG, "The response is: " + response);
        is = conn.getInputStream();

        // Convert the InputStream into a string
        String contentAsString = convertInputStreamToString(is, length);
        return contentAsString;
    } finally {
        if (is != null) {
            is.close();
        }
    }
}

From source file:com.facebook.android.Example.java

/** Called when the activity is first created. */
@Override/* w  ww.java  2s  .  co m*/
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    if (APP_ID == null) {
        Util.showAlert(this, "Warning",
                "Facebook Applicaton ID must be " + "specified before running this example: see Example.java");
    }

    setContentView(R.layout.main);
    mLoginButton = (LoginButton) findViewById(R.id.login);
    mText = (TextView) Example.this.findViewById(R.id.txt);
    mRequestButton = (Button) findViewById(R.id.requestButton);
    mPostButton = (Button) findViewById(R.id.postButton);
    mDeleteButton = (Button) findViewById(R.id.deletePostButton);
    mUploadButton = (Button) findViewById(R.id.uploadButton);

    mFacebook = new Facebook(APP_ID);
    mAsyncRunner = new AsyncFacebookRunner(mFacebook);

    SessionStore.restore(mFacebook, this);
    SessionEvents.addAuthListener(new SampleAuthListener());
    SessionEvents.addLogoutListener(new SampleLogoutListener());
    mLoginButton.init(this, mFacebook);

    mRequestButton.setOnClickListener(new OnClickListener() {
        public void onClick(View v) {
            mAsyncRunner.request("me", new SampleRequestListener());
        }
    });
    mRequestButton.setVisibility(mFacebook.isSessionValid() ? View.VISIBLE : View.INVISIBLE);

    mUploadButton.setOnClickListener(new OnClickListener() {
        public void onClick(View v) {
            Bundle params = new Bundle();
            params.putString("method", "photos.upload");

            URL uploadFileUrl = null;
            try {
                uploadFileUrl = new URL("http://www.facebook.com/images/devsite/iphone_connect_btn.jpg");
            } catch (MalformedURLException e) {
                e.printStackTrace();
            }
            try {
                HttpURLConnection conn = (HttpURLConnection) uploadFileUrl.openConnection();
                conn.setDoInput(true);
                conn.connect();
                int length = conn.getContentLength();

                byte[] imgData = new byte[length];
                InputStream is = conn.getInputStream();
                is.read(imgData);
                params.putByteArray("picture", imgData);

            } catch (IOException e) {
                e.printStackTrace();
            }

            mAsyncRunner.request(null, params, "POST", new SampleUploadListener(), null);
        }
    });
    mUploadButton.setVisibility(mFacebook.isSessionValid() ? View.VISIBLE : View.INVISIBLE);

    mPostButton.setOnClickListener(new OnClickListener() {
        public void onClick(View v) {
            mFacebook.dialog(Example.this, "feed", new SampleDialogListener());
        }
    });
    mPostButton.setVisibility(mFacebook.isSessionValid() ? View.VISIBLE : View.INVISIBLE);
}

From source file:com.joyent.manta.client.MantaClientSigningIT.java

@Test
public final void testCanCreateSignedHEADUriFromPath() throws IOException {
    if (config.isClientEncryptionEnabled()) {
        throw new SkipException("Signed URLs are not decrypted by the client");
    }/*  w  w  w  . j  av  a2  s  . c o m*/

    final String name = UUID.randomUUID().toString();
    final String path = testPathPrefix + name;

    mantaClient.put(path, TEST_DATA);

    // This will throw an error if the newly inserted object isn't present
    mantaClient.head(path);

    Instant expires = Instant.now().plus(1, ChronoUnit.HOURS);
    URI uri = mantaClient.getAsSignedURI(path, "HEAD", expires);

    HttpURLConnection connection = (HttpURLConnection) uri.toURL().openConnection();

    try {
        connection.setReadTimeout(3000);
        connection.setRequestMethod("HEAD");
        connection.connect();

        Map<String, List<String>> headers = connection.getHeaderFields();

        if (connection.getResponseCode() != 200) {
            Assert.fail(IOUtils.toString(connection.getErrorStream(), Charset.defaultCharset()));
        }

        Assert.assertNotNull(headers);
        Assert.assertEquals(TEST_DATA.length(), connection.getContentLength());
    } finally {
        connection.disconnect();
    }
}

From source file:com.finlay.geomonsters.WeatherManager.java

private String getWeatherData(String address) {
    Log.v(TAG, "getWeatherData: " + address);
    HttpURLConnection con = null;
    InputStream is = null;//  w w  w.  ja  va2 s  .c  om

    try {
        con = (HttpURLConnection) (new java.net.URL(address)).openConnection();
        con.setRequestMethod("GET");
        con.setDoInput(true);
        con.setDoOutput(true);
        con.connect();

        Log.v(TAG, "Open Weather connected.");
        _parent.appendMessage("Open Weather connected.");

        // Let's read the response
        StringBuffer buffer = new StringBuffer();
        is = con.getInputStream();
        BufferedReader br = new BufferedReader(new InputStreamReader(is));
        String line = null;
        while ((line = br.readLine()) != null)
            buffer.append(line + "\r\n");

        is.close();
        con.disconnect();
        return buffer.toString();

    } catch (Throwable t) {
        Log.e(TAG, t.getMessage());
    } finally {
        try {
            is.close();
        } catch (Throwable t) {
        }
        try {
            con.disconnect();
        } catch (Throwable t) {
        }
    }

    return null;
}

From source file:com.jittr.android.facebook.Example.java

/** Called when the activity is first created. */
@Override//from  w w  w. ja  va  2 s  . c  om
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    if (APP_ID == null) {
        Util.showAlert(this, "Warning",
                "Facebook Applicaton ID must be " + "specified before running this example: see Example.java");
    }

    // mFacebook.
    setContentView(R.layout.mainfacebook);
    mLoginButton = (LoginButton) findViewById(R.id.login);
    mText = (TextView) Example.this.findViewById(R.id.txt);
    mRequestButton = (Button) findViewById(R.id.requestButton);
    mPostButton = (Button) findViewById(R.id.postButton);
    mDeleteButton = (Button) findViewById(R.id.deletePostButton);
    mUploadButton = (Button) findViewById(R.id.uploadButton);

    mFacebook = new Facebook();
    mAsyncRunner = new AsyncFacebookRunner(mFacebook);

    SessionStore.restore(mFacebook, this);
    SessionEvents.addAuthListener(new SampleAuthListener());
    SessionEvents.addLogoutListener(new SampleLogoutListener());
    mLoginButton.init(mFacebook, PERMISSIONS);

    mRequestButton.setOnClickListener(new OnClickListener() {
        public void onClick(View v) {
            mAsyncRunner.request("me", new SampleRequestListener());
        }
    });
    mRequestButton.setVisibility(mFacebook.isSessionValid() ? View.VISIBLE : View.INVISIBLE);

    mUploadButton.setOnClickListener(new OnClickListener() {
        public void onClick(View v) {
            Bundle params = new Bundle();
            params.putString("method", "photos.upload");

            URL uploadFileUrl = null;
            try {
                uploadFileUrl = new URL("http://www.facebook.com/images/devsite/iphone_connect_btn.jpg");
            } catch (MalformedURLException e) {
                e.printStackTrace();
            }
            try {
                HttpURLConnection conn = (HttpURLConnection) uploadFileUrl.openConnection();
                conn.setDoInput(true);
                conn.connect();
                int length = conn.getContentLength();

                byte[] imgData = new byte[length];
                InputStream is = conn.getInputStream();
                is.read(imgData);
                params.putByteArray("picture", imgData);

            } catch (IOException e) {
                e.printStackTrace();
            }

            mAsyncRunner.request(null, params, "POST", new SampleUploadListener());
        }
    });
    mUploadButton.setVisibility(mFacebook.isSessionValid() ? View.VISIBLE : View.INVISIBLE);

    mPostButton.setOnClickListener(new OnClickListener() {
        public void onClick(View v) {
            mFacebook.dialog(Example.this, "stream.publish", new SampleDialogListener());
        }
    });
    mPostButton.setVisibility(mFacebook.isSessionValid() ? View.VISIBLE : View.INVISIBLE);
}

From source file:edu.stanford.mobisocial.dungbeetle.facebook.FacebookInterfaceActivity.java

/** Called when the activity is first created. */
@Override//from w  w w . j av  a 2 s .  co m
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    if (APP_ID == null) {
        Util.showAlert(this, "Warning", "Facebook Applicaton ID must be "
                + "specified before running this example: see FacebookInterfaceActivity.java");
    }

    setContentView(R.layout.facebook);
    mLoginButton = (LoginButton) findViewById(R.id.login);
    mText = (TextView) FacebookInterfaceActivity.this.findViewById(R.id.txt);
    mRequestButton = (Button) findViewById(R.id.requestButton);
    mPostButton = (Button) findViewById(R.id.postButton);
    mDeleteButton = (Button) findViewById(R.id.deletePostButton);
    mUploadButton = (Button) findViewById(R.id.uploadButton);

    mFacebook = new Facebook(APP_ID);
    mAsyncRunner = new AsyncFacebookRunner(mFacebook);

    SessionStore.restore(mFacebook, this);
    SessionEvents.addAuthListener(new SampleAuthListener());
    SessionEvents.addLogoutListener(new SampleLogoutListener());
    mLoginButton.init(this, mFacebook);

    mRequestButton.setOnClickListener(new OnClickListener() {
        public void onClick(View v) {
            mAsyncRunner.request("me", new SampleRequestListener());
        }
    });
    mRequestButton.setVisibility(mFacebook.isSessionValid() ? View.VISIBLE : View.INVISIBLE);

    mUploadButton.setOnClickListener(new OnClickListener() {
        public void onClick(View v) {
            Bundle params = new Bundle();
            params.putString("method", "photos.upload");

            URL uploadFileUrl = null;
            try {
                uploadFileUrl = new URL("http://www.facebook.com/images/devsite/iphone_connect_btn.jpg");
            } catch (MalformedURLException e) {
                e.printStackTrace();
            }
            try {
                HttpURLConnection conn = (HttpURLConnection) uploadFileUrl.openConnection();
                conn.setDoInput(true);
                conn.connect();
                int length = conn.getContentLength();

                byte[] imgData = new byte[length];
                InputStream is = conn.getInputStream();
                is.read(imgData);
                params.putByteArray("picture", imgData);

            } catch (IOException e) {
                e.printStackTrace();
            }

            mAsyncRunner.request(null, params, "POST", new SampleUploadListener(), null);
        }
    });
    mUploadButton.setVisibility(mFacebook.isSessionValid() ? View.VISIBLE : View.INVISIBLE);

    mPostButton.setOnClickListener(new OnClickListener() {
        public void onClick(View v) {
            mFacebook.dialog(FacebookInterfaceActivity.this, "feed", new SampleDialogListener());
        }
    });
    mPostButton.setVisibility(mFacebook.isSessionValid() ? View.VISIBLE : View.INVISIBLE);
}

From source file:cn.leancloud.diamond.server.service.NotifyService.java

/**
 * http get/*from   w w  w. ja v a  2  s  .co m*/
 * 
 * @param urlString
 * @return
 */
private String invokeURL(String urlString) {
    HttpURLConnection conn = null;
    URL url = null;
    try {
        url = new URL(urlString);
        conn = (HttpURLConnection) url.openConnection();
        conn.setConnectTimeout(TIMEOUT);
        conn.setReadTimeout(TIMEOUT);
        conn.setRequestMethod("GET");
        conn.connect();
        InputStream urlStream = conn.getInputStream();
        StringBuilder sb = new StringBuilder();
        BufferedReader reader = null;
        try {
            reader = new BufferedReader(new InputStreamReader(urlStream));
            String line = null;
            while ((line = reader.readLine()) != null) {
                sb.append(line);
            }
        } finally {
            if (reader != null)
                reader.close();
        }
        return sb.toString();

    } catch (Exception e) {
        log.error("http,url=" + urlString, e);
    } finally {
        if (conn != null) {
            conn.disconnect();
        }
    }
    return "error";
}

From source file:com.taobao.diamond.server.service.NotifyService.java

/**
 * http get//from w w w.  j  a  v  a  2  s. co m
 * 
 * @param urlString
 * @return
 */
private String invokeURL(String urlString) {
    HttpURLConnection conn = null;
    URL url = null;
    try {
        url = new URL(urlString);
        conn = (HttpURLConnection) url.openConnection();
        conn.setConnectTimeout(TIMEOUT);
        conn.setReadTimeout(TIMEOUT);
        conn.setRequestMethod("GET");
        conn.connect();
        InputStream urlStream = conn.getInputStream();
        StringBuilder sb = new StringBuilder();
        BufferedReader reader = null;
        try {
            reader = new BufferedReader(new InputStreamReader(urlStream));
            String line = null;
            while ((line = reader.readLine()) != null) {
                sb.append(line);
            }
        } finally {
            if (reader != null)
                reader.close();
        }
        return sb.toString();

    } catch (Exception e) {
        log.error("http,url=" + urlString, e);
    } finally {
        if (conn != null) {
            conn.disconnect();
        }
    }
    return "error";
}

From source file:crow.weibo.util.WeiboUtil.java

public static String multipartPost(HttpURLConnection conn, List<PostParameter> params) throws IOException {
    OutputStream os;//  w  w w  .j  a  v a 2s.c  o  m
    List<PostParameter> dataparams = new ArrayList<PostParameter>();
    for (PostParameter key : params) {
        if (key.isFile()) {
            dataparams.add(key);
        }
    }

    String BOUNDARY = Util.md5(String.valueOf(System.currentTimeMillis()));

    conn.setDoOutput(true);
    conn.setDoInput(true);
    conn.setUseCaches(false);
    conn.setRequestMethod("POST");
    conn.setRequestProperty("Connection", "Keep-Alive");
    conn.setRequestProperty("Charsert", "UTF-8");

    conn.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + BOUNDARY);

    ByteArrayBuffer buff = new ByteArrayBuffer(1000);

    for (PostParameter p : params) {
        byte[] arr = p.toMultipartByte(BOUNDARY, "UTF-8");
        buff.append(arr, 0, arr.length);
    }
    String end = "--" + BOUNDARY + "--" + "\r\n";
    byte[] endArr = end.getBytes();
    buff.append(endArr, 0, endArr.length);

    conn.setRequestProperty("Content-Length", buff.length() + "");
    conn.connect();
    os = new BufferedOutputStream(conn.getOutputStream());
    os.write(buff.toByteArray());
    buff.clear();
    os.flush();
    String response = "";
    response = Util.inputStreamToString(conn.getInputStream());
    return response;
}