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:lu.list.itis.dkd.aig.util.FusekiHttpHelper.java

/**
 * Create a new dataset//from  w  w w  .ja v a 2s . co m
 * 
 * @param dataSetName
 * @throws IOException
 * @throws HttpException
 */
public static void createDataSet(@NonNull String dataSetName) throws IOException, HttpException {
    logger.info("create dataset: " + dataSetName);

    URL url = new URL(HOST + "/$/datasets");
    final HttpURLConnection httpConnection = (HttpURLConnection) url.openConnection();
    httpConnection.setUseCaches(false);
    httpConnection.setRequestMethod("POST");
    httpConnection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");

    // set content
    httpConnection.setDoOutput(true);
    final OutputStreamWriter out = new OutputStreamWriter(httpConnection.getOutputStream());
    out.write("dbName=" + URLEncoder.encode(dataSetName, "UTF-8") + "&dbType=mem");
    out.close();

    // handle HTTP/HTTPS strange behaviour
    httpConnection.connect();
    httpConnection.disconnect();

    // handle response
    switch (httpConnection.getResponseCode()) {
    case HttpURLConnection.HTTP_OK:
        break;
    default:
        throw new HttpException(
                httpConnection.getResponseCode() + " message: " + httpConnection.getResponseMessage());
    }
}

---

From source file:Main.java

/**
 * Issue a POST request to the server./*from ww  w .  j a v a 2 s.  c  om*/
 *
 * @param endpoint POST address.
 * @param params request parameters.
 * @return response
 * @throws IOException propagated from POST.
 */
private static String executePost(String endpoint, Map<String, String> params) throws IOException {
    URL url;
    StringBuffer response = new StringBuffer();
    try {
        url = new URL(endpoint);
    } catch (MalformedURLException e) {
        throw new IllegalArgumentException("invalid url: " + endpoint);
    }
    StringBuilder bodyBuilder = new StringBuilder();
    Iterator<Entry<String, String>> iterator = params.entrySet().iterator();
    // constructs the POST body using the parameters
    while (iterator.hasNext()) {
        Entry<String, String> param = iterator.next();
        bodyBuilder.append(param.getKey()).append('=').append(param.getValue());
        if (iterator.hasNext()) {
            bodyBuilder.append('&');
        }
    }
    String body = bodyBuilder.toString();
    //Log.v(TAG, "Posting '" + body + "' to " + url);
    byte[] bytes = body.getBytes();
    HttpURLConnection conn = null;
    try {
        conn = (HttpURLConnection) url.openConnection();
        conn.setDoOutput(true);
        conn.setDoInput(true);
        conn.setUseCaches(false);
        conn.setFixedLengthStreamingMode(bytes.length);
        conn.setRequestMethod("POST");
        conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded;charset=UTF-8");

        // post the request
        OutputStream out = conn.getOutputStream();
        out.write(bytes);
        out.close();

        // handle the response
        int status = conn.getResponseCode();
        if (status != 200) {
            throw new IOException("Post failed with error code " + status);

        } else {
            BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream()));
            String inputLine;
            while ((inputLine = in.readLine()) != null) {
                response.append(inputLine);
            }
            in.close();
        }
    } finally {
        if (conn != null) {
            conn.disconnect();
        }
    }
    return response.toString();
}

---

From source file:Main.java

public static String uploadFile(File file, String RequestURL) {
    String BOUNDARY = UUID.randomUUID().toString();
    String PREFIX = "--", LINE_END = "\r\n";
    String CONTENT_TYPE = "multipart/form-data";

    try {//from ww  w  .j  a v a  2s  . co  m
        URL url = new URL(RequestURL);
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        conn.setReadTimeout(TIME_OUT);
        conn.setConnectTimeout(TIME_OUT);
        conn.setDoInput(true);
        conn.setDoOutput(true);
        conn.setUseCaches(false);
        conn.setRequestMethod("POST");
        conn.setRequestProperty("Charset", CHARSET);
        conn.setRequestProperty("connection", "keep-alive");
        conn.setRequestProperty("Content-Type", CONTENT_TYPE + ";boundary=" + BOUNDARY);
        if (file != null) {

            OutputStream outputSteam = conn.getOutputStream();

            DataOutputStream dos = new DataOutputStream(outputSteam);
            StringBuffer sb = new StringBuffer();
            sb.append(PREFIX);
            sb.append(BOUNDARY);
            sb.append(LINE_END);

            sb.append("Content-Disposition: form-data; name=\"img\"; filename=\"" + file.getName() + "\""
                    + LINE_END);
            sb.append("Content-Type: application/octet-stream; charset=" + CHARSET + LINE_END);
            sb.append(LINE_END);
            dos.write(sb.toString().getBytes());
            InputStream is = new FileInputStream(file);
            byte[] bytes = new byte[1024];
            int len = 0;
            while ((len = is.read(bytes)) != -1) {
                dos.write(bytes, 0, len);
            }
            is.close();
            dos.write(LINE_END.getBytes());
            byte[] end_data = (PREFIX + BOUNDARY + PREFIX + LINE_END).getBytes();
            dos.write(end_data);
            dos.flush();

            int res = conn.getResponseCode();
            Log.e(TAG, "response code:" + res);
            if (res == 200) {
                return SUCCESS;
            }
        }
    } catch (MalformedURLException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
    return FAILURE;
}

---

From source file:com.mopaas_mobile.http.BaseHttpRequester.java

public static String doPOST(String urlstr, List<BasicNameValuePair> params) throws IOException {
    String result = null;/*from   w w w .  ja  v a 2 s .c  o m*/
    URL url = new URL(urlstr);
    HttpURLConnection connection = (HttpURLConnection) url.openConnection();
    connection.setDoOutput(true);
    connection.setDoInput(true);
    connection.setRequestMethod("POST");
    connection.setUseCaches(false);
    connection.setInstanceFollowRedirects(false);
    connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
    //       connection.setRequestProperty("token",token);
    connection.setConnectTimeout(30000);
    connection.setReadTimeout(30000);
    connection.connect();

    DataOutputStream out = new DataOutputStream(connection.getOutputStream());

    String content = "";
    if (params != null && params.size() > 0) {
        for (int i = 0; i < params.size(); i++) {
            content = content + "&" + URLEncoder.encode(((NameValuePair) params.get(i)).getName(), "UTF-8")
                    + "=" + URLEncoder.encode(((NameValuePair) params.get(i)).getValue(), "UTF-8");
        }
        out.writeBytes(content.substring(1));
    }

    out.flush();
    out.close();
    InputStream is = connection.getInputStream();
    BufferedReader br = new BufferedReader(new InputStreamReader(is, "UTF-8"));

    StringBuffer b = new StringBuffer();
    int ch;
    while ((ch = br.read()) != -1) {
        b.append((char) ch);
    }
    result = b.toString().trim();
    connection.disconnect();
    return result;
}

---

From source file:com.mopaas_mobile.http.BaseHttpRequester.java

public static String doGETwithHeader(String urlstr, String token, List<BasicNameValuePair> params)
        throws IOException {
    String result = null;//  ww w .  j  a v a2s.  c  o  m
    String content = "";
    for (int i = 0; i < params.size(); i++) {
        content = content + "&" + URLEncoder.encode(((NameValuePair) params.get(i)).getName(), "UTF-8") + "="
                + URLEncoder.encode(((NameValuePair) params.get(i)).getValue(), "UTF-8");
    }
    URL url = new URL(urlstr + "?" + content.substring(1));
    HttpURLConnection connection = (HttpURLConnection) url.openConnection();
    connection.setRequestProperty("token", token);
    connection.setDoInput(true);
    connection.setRequestMethod("GET");
    connection.setUseCaches(false);
    connection.connect();
    InputStream is = connection.getInputStream();
    BufferedReader br = new BufferedReader(new InputStreamReader(is, "UTF-8"));

    StringBuffer b = new StringBuffer();
    int ch;
    while ((ch = br.read()) != -1) {
        b.append((char) ch);
    }
    result = b.toString().trim();
    connection.disconnect();
    return result;
}

---

From source file:fr.ms.tomcat.manager.TomcatManagerUrl.java

public static String appelUrl(final URL url, final String username, final String password,
        final String charset) {

    try {/* ww w.j  av  a 2s.co  m*/
        final URLConnection urlTomcatConnection = url.openConnection();

        final HttpURLConnection connection = (HttpURLConnection) urlTomcatConnection;

        LOG.debug("url : " + url);
        connection.setAllowUserInteraction(false);
        connection.setDoInput(true);
        connection.setUseCaches(false);

        connection.setDoOutput(false);
        connection.setRequestMethod("GET");

        connection.setRequestProperty("Authorization", toAuthorization(username, password));

        connection.connect();

        if (connection.getResponseCode() != HttpURLConnection.HTTP_OK) {
            if (connection.getResponseCode() == HttpURLConnection.HTTP_UNAUTHORIZED) {
                throw new TomcatManagerException("Reponse http : " + connection.getResponseMessage()
                        + " - Les droits \"manager\" ne sont pas appliques - utilisateur : \"" + username
                        + "\" password : \"" + password + "\"");
            }
            throw new TomcatManagerException("HttpURLConnection.HTTP_UNAUTHORIZED");
        }

        final String response = toString(connection.getInputStream(), charset);

        LOG.debug("reponse : " + response);

        return response;
    } catch (final Exception e) {
        throw new TomcatManagerException("L'url du manager tomcat est peut etre incorrecte : \"" + url + "\"",
                e);
    }
}

---

From source file:Main.java

public static String customrequest(String url, HashMap<String, String> params, String method) {
    try {/* ww w  .j  a v a2s.  c  o m*/

        URL postUrl = new URL(url);
        HttpURLConnection conn = (HttpURLConnection) postUrl.openConnection();
        conn.setDoOutput(true);
        conn.setDoInput(true);
        conn.setConnectTimeout(5 * 1000);

        conn.setRequestMethod(method);
        conn.setUseCaches(false);
        conn.setInstanceFollowRedirects(true);
        conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
        conn.setRequestProperty("User-Agent", "Mozilla/4.0 (compatible; MSIE 5.0; Windows XP; DigExt)");

        conn.connect();
        OutputStream out = conn.getOutputStream();
        StringBuilder sb = new StringBuilder();
        if (null != params) {
            int i = params.size();
            for (Map.Entry<String, String> entry : params.entrySet()) {
                if (i == 1) {
                    sb.append(entry.getKey() + "=" + entry.getValue());
                } else {
                    sb.append(entry.getKey() + "=" + entry.getValue() + "&");
                }

                i--;
            }
        }
        String content = sb.toString();
        out.write(content.getBytes("UTF-8"));
        out.flush();
        out.close();
        InputStream inStream = conn.getInputStream();
        String result = inputStream2String(inStream);
        conn.disconnect();
        return result;
    } catch (Exception e) {
        // TODO: handle exception
    }
    return null;
}

---

From source file:Main.java

/**
 * Given a string url, connects and returns response code
 *
 * @param urlString       string to fetch
 * @param readTimeOutMs       read time out
 * @param connectionTimeOutMs       connection time out
 * @param urlRedirect       should use urlRedirect
 * @param useCaches       should use cache
 * @return httpResponseCode http response code
 * @throws IOException//from  www  .j a v  a  2  s.  c o  m
 */

public static int checkUrlWithOptions(String urlString, int readTimeOutMs, int connectionTimeOutMs,
        boolean urlRedirect, boolean useCaches) throws IOException {
    URL url = new URL(urlString);
    HttpURLConnection connection = (HttpURLConnection) url.openConnection();
    connection.setReadTimeout(readTimeOutMs /* milliseconds */);
    connection.setConnectTimeout(connectionTimeOutMs /* milliseconds */);
    connection.setRequestMethod("GET");
    connection.setInstanceFollowRedirects(urlRedirect);
    connection.setUseCaches(useCaches);
    // Starts the query
    connection.connect();
    int responseCode = connection.getResponseCode();
    connection.disconnect();
    return responseCode;
}

---

From source file:chen.android.toolkit.network.HttpConnection.java

/**
 * </br><b>title : </b>      ????POST??
 * </br><b>description :</b>????POST??
 * </br><b>time :</b>      2012-7-8 ?4:34:08
 * @param method         ??// ww w.  j  a v  a 2s  .  c  om
 * @param url            POSTURL
 * @param datas            ????
 * @return               ???
 * @throws IOException
 */
private static InputStream connect(String method, URL url, byte[]... datas) throws IOException {
    HttpURLConnection conn = (HttpURLConnection) url.openConnection();
    conn.setDoOutput(true);
    conn.setDoInput(true);
    conn.setRequestMethod(method);
    conn.setUseCaches(false);
    conn.setInstanceFollowRedirects(true);
    conn.setConnectTimeout(6 * 1000);
    conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
    conn.setRequestProperty("Connection", "Keep-Alive");
    conn.setRequestProperty("Charset", "UTF-8");
    OutputStream outputStream = conn.getOutputStream();
    for (byte[] data : datas) {
        outputStream.write(data);
    }
    outputStream.close();
    return conn.getInputStream();
}

---

From source file:Main.java

public static String callJsonAPI(String urlString) {
    // Use HttpURLConnection as per Android 6.0 spec, instead of less efficient HttpClient
    HttpURLConnection urlConnection = null;
    StringBuilder jsonResult = new StringBuilder();

    try {// www  .  j a va  2 s .  c om
        URL url = new URL(urlString);
        urlConnection = (HttpURLConnection) url.openConnection();
        urlConnection.setRequestMethod("GET");
        urlConnection.setUseCaches(false);
        urlConnection.setConnectTimeout(TIMEOUT_CONNECTION);
        urlConnection.setReadTimeout(TIMEOUT_READ);
        urlConnection.connect();

        int status = urlConnection.getResponseCode();

        switch (status) {
        case 200:
        case 201:
            BufferedReader br = new BufferedReader(new InputStreamReader(urlConnection.getInputStream()));

            String line;
            while ((line = br.readLine()) != null) {
                jsonResult.append(line).append("\n");
            }
            br.close();
        }
    } catch (MalformedURLException e) {
        System.err.print(e.getMessage());
        return e.getMessage();
    } catch (IOException e) {
        System.err.print(e.getMessage());
        return e.getMessage();
    } finally {
        if (urlConnection != null) {
            try {
                urlConnection.disconnect();
            } catch (Exception e) {
                System.err.print(e.getMessage());
            }
        }
    }
    return jsonResult.toString();
}

---

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