Example usage for java.net HttpURLConnection setUseCaches

Introduction

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

Prototype

public void setUseCaches(boolean usecaches) 

Source Link

Document

Sets the value of the useCaches field of this URLConnection to the specified value.

Usage

From source file:net.andylizi.colormotd.Updater.java

private boolean checkUpdate() {
    if (file != null && file.exists()) {
        cancel();/*from ww  w .j av  a 2s  .  co m*/
    }
    URL url;
    try {
        url = new URL(UPDATE_URL);
    } catch (MalformedURLException ex) {
        if (DEBUG) {
            ex.printStackTrace();
        }
        return false;
    }
    try {
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        conn.setUseCaches(false);
        conn.setRequestMethod("GET");
        conn.addRequestProperty("User-Agent", userAgent);
        if (etag != null) {
            conn.addRequestProperty("If-None-Match", etag);
        }
        conn.addRequestProperty("Accept", "application/json,text/plain,*/*;charset=utf-8");
        conn.addRequestProperty("Accept-Encoding", "gzip");
        conn.addRequestProperty("Cache-Control", "no-cache");
        conn.addRequestProperty("Date", new Date().toString());
        conn.addRequestProperty("Connection", "close");

        conn.setDoInput(true);
        conn.setDoOutput(false);
        conn.setConnectTimeout(2000);
        conn.setReadTimeout(2000);

        conn.connect();

        if (conn.getHeaderField("ETag") != null) {
            etag = conn.getHeaderField("ETag");
        }
        if (DEBUG) {
            logger.log(Level.INFO, "DEBUG ResponseCode: {0}", conn.getResponseCode());
            logger.log(Level.INFO, "DEBUG ETag: {0}", etag);
        }
        if (conn.getResponseCode() == HttpURLConnection.HTTP_NOT_MODIFIED) {
            return false;
        } else if (conn.getResponseCode() != HttpURLConnection.HTTP_OK) {
            return false;
        }

        BufferedReader input = null;
        if (conn.getContentEncoding() != null && conn.getContentEncoding().contains("gzip")) {
            input = new BufferedReader(
                    new InputStreamReader(new GZIPInputStream(conn.getInputStream()), "UTF-8"), 1);
        } else {
            input = new BufferedReader(new InputStreamReader(conn.getInputStream(), "UTF-8"), 1);
        }

        StringBuilder builder = new StringBuilder();
        String buffer = null;
        while ((buffer = input.readLine()) != null) {
            builder.append(buffer);
        }
        try {
            JSONObject jsonObj = (JSONObject) new JSONParser().parse(builder.toString());
            int build = ((Number) jsonObj.get("build")).intValue();
            if (build <= ColorMOTD.buildVersion) {
                return false;
            }
            String version = (String) jsonObj.get("version");
            String msg = (String) jsonObj.get("msg");
            String download_url = (String) jsonObj.get("url");
            newVersion = new NewVersion(version, build, msg, download_url);
            return true;
        } catch (ParseException ex) {
            if (DEBUG) {
                ex.printStackTrace();
            }
            exception = ex;
            return false;
        }
    } catch (SocketTimeoutException ex) {
        return false;
    } catch (IOException ex) {
        if (DEBUG) {
            ex.printStackTrace();
        }
        exception = ex;
        return false;
    }
}

---

From source file:net.andylizi.colormotd.anim.updater.Updater.java

private boolean checkUpdate() {
    if (new File(Bukkit.getUpdateFolderFile(), fileName).exists()) {
        cancel();//from   w w w .  j  a v  a2  s .  c om
    }
    URL url;
    try {
        url = new URL(UPDATE_URL);
    } catch (MalformedURLException ex) {
        if (DEBUG) {
            ex.printStackTrace();
        }
        return false;
    }
    try {
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        conn.setUseCaches(false);
        conn.setRequestMethod("GET");
        conn.addRequestProperty("User-Agent", USER_AGENT);
        if (etag != null) {
            conn.addRequestProperty("If-None-Match", etag);
        }
        conn.addRequestProperty("Accept", "application/json,text/plain,*/*;charset=utf-8");
        conn.addRequestProperty("Accept-Encoding", "gzip");
        conn.addRequestProperty("Cache-Control", "no-cache");
        conn.addRequestProperty("Date", new Date().toString());
        conn.addRequestProperty("Connection", "close");

        conn.setDoInput(true);
        conn.setDoOutput(false);
        conn.setConnectTimeout(2000);
        conn.setReadTimeout(2000);

        conn.connect();

        if (conn.getHeaderField("ETag") != null) {
            etag = conn.getHeaderField("ETag");
        }
        if (DEBUG) {
            logger.log(Level.INFO, "DEBUG ResponseCode: {0}", conn.getResponseCode());
            logger.log(Level.INFO, "DEBUG ETag: {0}", etag);
        }
        if (conn.getResponseCode() == HttpURLConnection.HTTP_NOT_MODIFIED) {
            return false;
        } else if (conn.getResponseCode() != HttpURLConnection.HTTP_OK) {
            return false;
        }

        BufferedReader input = null;
        if (conn.getContentEncoding() != null && conn.getContentEncoding().contains("gzip")) {
            input = new BufferedReader(
                    new InputStreamReader(new GZIPInputStream(conn.getInputStream()), "UTF-8"), 1);
        } else {
            input = new BufferedReader(new InputStreamReader(conn.getInputStream(), "UTF-8"), 1);
        }

        StringBuilder builder = new StringBuilder();
        String buffer = null;
        while ((buffer = input.readLine()) != null) {
            builder.append(buffer);
        }
        try {
            JSONObject jsonObj = (JSONObject) new JSONParser().parse(builder.toString());
            int build = ((Number) jsonObj.get("build")).intValue();
            if (build <= buildVersion) {
                return false;
            }
            String version = (String) jsonObj.get("version");
            String msg = (String) jsonObj.get("msg");
            String download_url = (String) jsonObj.get("url");
            newVersion = new NewVersion(version, build, msg, download_url);
            return true;
        } catch (ParseException ex) {
            if (DEBUG) {
                ex.printStackTrace();
            }
            exception = ex;
            return false;
        }
    } catch (SocketTimeoutException ex) {
        return false;
    } catch (IOException ex) {
        if (DEBUG) {
            ex.printStackTrace();
        }
        exception = ex;
        return false;
    }
}

---

From source file:com.android.volley.toolbox.HurlStack.java

/**
 * Opens an {@link HttpURLConnection} with parameters.
 * @param url//from   www.j a  va2  s  . com
 * @return an open connection
 * @throws IOException
 */
private HttpURLConnection openConnection(URL url, Request<?> request) throws IOException {
    HttpURLConnection connection = createConnection(url);

    int timeoutMs = request.getTimeoutMs();
    connection.setConnectTimeout(timeoutMs);
    connection.setReadTimeout(timeoutMs);
    connection.setUseCaches(false);
    connection.setDoInput(true);

    // use caller-provided custom SslSocketFactory, if any, for HTTPS
    if ("https".equals(url.getProtocol()) && mSslSocketFactory != null) {
        ((HttpsURLConnection) connection).setSSLSocketFactory(mSslSocketFactory);
    }

    return connection;
}

---

From source file:br.ufjf.taverna.core.TavernaClientBase.java

protected HttpURLConnection request(String endpoint, TavernaServerMethods method, int expectedResponseCode,
        String acceptData, String contentType, String filePath, String putData) throws TavernaException {
    HttpURLConnection connection = null;

    try {/*from  ww w . j a  v  a2 s. c  o m*/
        String uri = this.getBaseUri() + endpoint;
        URL url = new URL(uri);
        connection = (HttpURLConnection) url.openConnection();
        connection.setUseCaches(false);
        connection.setDoOutput(true);
        connection.setRequestProperty("Connection", "Keep-Alive");
        connection.setRequestProperty("Cache-Control", "no-cache");
        String authorization = this.username + ":" + this.password;
        String encodedAuthorization = "Basic " + new String(Base64.encodeBase64(authorization.getBytes()));
        connection.setRequestProperty("Authorization", encodedAuthorization);
        connection.setRequestMethod(method.getMethod());

        if (acceptData != null) {
            connection.setRequestProperty("Accept", acceptData);
        }

        if (contentType != null) {
            connection.setRequestProperty("Content-Type", contentType);
        }

        if (TavernaServerMethods.GET.equals(method)) {

        } else if (TavernaServerMethods.POST.equals(method)) {
            FileReader fr = new FileReader(filePath);
            char[] buffer = new char[1024 * 10];
            int read;
            OutputStreamWriter writer = new OutputStreamWriter(connection.getOutputStream());
            while ((read = fr.read(buffer)) != -1) {
                writer.write(buffer, 0, read);
            }
            writer.flush();
            writer.close();
            fr.close();
        } else if (TavernaServerMethods.PUT.equals(method)) {
            OutputStreamWriter writer = new OutputStreamWriter(connection.getOutputStream());
            writer.write(putData);
            writer.flush();
            writer.close();
        } else if (TavernaServerMethods.DELETE.equals(method)) {

        }

        int responseCode = connection.getResponseCode();
        if (responseCode != expectedResponseCode) {
            throw new TavernaException(
                    String.format("Invalid HTTP Response Code. Expected %d, actual %d, URL %s",
                            expectedResponseCode, responseCode, url));
        }
    } catch (IOException ioe) {
        ioe.printStackTrace();
    }
    return connection;
}

---

From source file:lk.appzone.client.MchoiceAventuraSmsSender.java

public String excutePost(String targetURL, String username, String password, String urlParameters)
        throws MchoiceAventuraMessagingException {
    URL url;/*from  w  ww  .  j  a va  2  s . c  o m*/
    HttpURLConnection connection = null;
    try {
        //Create connection
        url = new URL(targetURL);
        connection = (HttpURLConnection) url.openConnection();

        setSdpHeaderParams(connection);
        setBasicAuthentication(username, password, connection);

        connection.setUseCaches(false);
        connection.setDoInput(true);
        connection.setDoOutput(true);

        sendRequest(urlParameters, connection);

        return getResponse(connection);

    } catch (Exception e) {
        logger.error("Error occcured while sending the request", e);
        throw new MchoiceAventuraMessagingException("Error occcured while sending the request", e);

    } finally {

        if (connection != null) {
            connection.disconnect();
        }
    }
}

---

From source file:com.external.volley.toolbox.HurlStack.java

/**
 * Opens an {@link HttpURLConnection} with parameters.
 * @param url/*from w  ww .  ja  va2s  . c  om*/
 * @return an open connection
 * @throws IOException
 */
private HttpURLConnection openConnection(URL url, Request<?> request) throws IOException {

    OkHttpClient okHttpClient = new OkHttpClient();
    HttpURLConnection connection = new OkUrlFactory(okHttpClient).open(url);

    int timeoutMs = request.getTimeoutMs();
    connection.setConnectTimeout(timeoutMs);
    connection.setReadTimeout(timeoutMs);
    connection.setUseCaches(false);
    connection.setDoInput(true);
    connection.setRequestProperty("Charset", "UTF-8"); // ?
    connection.setRequestProperty("connection", "keep-alive");

    // use caller-provided custom SslSocketFactory, if any, for HTTPS
    if ("https".equals(url.getProtocol()) && mSslSocketFactory != null) {
        ((HttpsURLConnection) connection).setSSLSocketFactory(mSslSocketFactory);
    }

    return connection;
}

---

From source file:com.hackerati.android.user_sdk.volley.HHurlStack.java

/**
 * Opens an {@link HttpURLConnection} with parameters.
 * /* w ww.  jav  a 2s . co m*/
 * @param url
 * @return an open connection
 * @throws IOException
 */
private HttpURLConnection openConnection(final URL url, final Request<?> request) throws IOException {
    final HttpURLConnection connection = createConnection(url);

    final int timeoutMs = request.getTimeoutMs();
    connection.setConnectTimeout(timeoutMs);
    connection.setReadTimeout(timeoutMs);
    connection.setUseCaches(false);
    connection.setDoInput(true);

    // use caller-provided custom SslSocketFactory, if any, for HTTPS
    if ("https".equals(url.getProtocol()) && mSslSocketFactory != null) {
        ((HttpsURLConnection) connection).setSSLSocketFactory(mSslSocketFactory);
    }

    return connection;
}

---

From source file:com.nxt.zyl.data.volley.toolbox.HurlStack.java

/**
 * Opens an {@link java.net.HttpURLConnection} with parameters.
 * @param url//from   ww  w  .j  a va2  s. co  m
 * @return an open connection
 * @throws java.io.IOException
 */
private HttpURLConnection openConnection(URL url, Request<?> request) throws IOException {
    HttpURLConnection connection = createConnection(url);

    int timeoutMs = request.getTimeoutMs();
    connection.setConnectTimeout(CONNECTION_TIME_OUT_MS);
    connection.setReadTimeout(timeoutMs);
    connection.setUseCaches(false);
    connection.setDoInput(true);

    // use caller-provided custom SslSocketFactory, if any, for HTTPS
    if ("https".equals(url.getProtocol()) && mSslSocketFactory != null) {
        ((HttpsURLConnection) connection).setSSLSocketFactory(mSslSocketFactory);
    }

    return connection;
}

---

From source file:net.bashtech.geobot.BotManager.java

public static String postRemoteDataStrawpoll(String urlString) {

    String line = "";
    try {//  www  . j a v a2  s  .c  o  m
        HttpURLConnection c = (HttpURLConnection) (new URL("http://strawpoll.me/api/v2/polls")
                .openConnection());

        c.setRequestMethod("POST");
        c.setRequestProperty("Content-Type", "application/json");
        c.setRequestProperty("User-Agent", "CB2");

        c.setDoOutput(true);
        c.setDoInput(true);
        c.setUseCaches(false);

        String queryString = urlString;

        c.setRequestProperty("Content-Length", Integer.toString(queryString.length()));

        DataOutputStream wr = new DataOutputStream(c.getOutputStream());
        wr.writeBytes(queryString);

        wr.flush();
        wr.close();

        Scanner inStream = new Scanner(c.getInputStream());

        while (inStream.hasNextLine())
            line += (inStream.nextLine());

        inStream.close();
        System.out.println(line);
        try {
            JSONParser parser = new JSONParser();
            Object obj = parser.parse(line);
            JSONObject jsonObject = (JSONObject) obj;
            line = (Long) jsonObject.get("id") + "";

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

    } catch (MalformedURLException ex) {
        ex.printStackTrace();
    } catch (IOException ex) {
        ex.printStackTrace();
    }

    return line;
}

---

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