Example usage for java.net HttpURLConnection setUseCaches

List of usage examples for java.net HttpURLConnection setUseCaches

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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:crow.weibo.util.WeiboUtil.java

public static String multipartPost(HttpURLConnection conn, List<PostParameter> params) throws IOException {
    OutputStream os;// w  ww.j a  v a2  s .co  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;
}

From source file:com.gmobi.poponews.util.HttpHelper.java

private static Response doRequest(String url, Object raw, int method) {
    disableSslCheck();/* ww w. j  ava  2 s.  co m*/
    boolean isJson = raw instanceof JSONObject;
    String body = raw == null ? null : raw.toString();
    Response response = new Response();
    HttpURLConnection connection = null;
    try {
        URL httpURL = new URL(url);
        connection = (HttpURLConnection) httpURL.openConnection();
        connection.setConnectTimeout(15000);
        connection.setReadTimeout(30000);
        connection.setUseCaches(false);
        if (method == HTTP_POST)
            connection.setRequestMethod("POST");
        if (body != null) {
            if (isJson) {
                connection.setRequestProperty("Accept", "application/json");
                connection.setRequestProperty("Content-Type", "application/json");
            }
            OutputStream os = connection.getOutputStream();
            OutputStreamWriter osw = new OutputStreamWriter(os);
            osw.write(body);
            osw.flush();
            osw.close();
        }
        InputStream in = connection.getInputStream();
        response.setBody(FileHelper.readText(in, "UTF-8"));
        response.setStatusCode(connection.getResponseCode());
        in.close();
        connection.disconnect();
        connection = null;
    } catch (Exception e) {
        Logger.error(e);
        try {
            if ((connection != null) && (response.getBody() == null) && (connection.getErrorStream() != null)) {
                response.setBody(FileHelper.readText(connection.getErrorStream(), "UTF-8"));
            }
        } catch (Exception ex) {
            Logger.error(ex);
        }
    }
    return response;
}

From source file:com.codelanx.codelanxlib.logging.Debugger.java

/**
 * Sends a JSON payload to a URL specified by the string parameter
 * //from www.j  a  va  2  s.  co  m
 * @since 0.1.0
 * @version 0.1.0
 * 
 * @param url The URL to report to
 * @param payload The JSON payload to send via POST
 * @throws IOException If the sending failed
 */
private static void send(String url, JSONObject payload) throws IOException {
    URL loc = new URL(url);
    HttpURLConnection http = (HttpURLConnection) loc.openConnection();
    http.setRequestMethod("POST");
    http.setRequestProperty("Content-Type", "application/json");
    http.setUseCaches(false);
    http.setDoOutput(true);
    try (DataOutputStream wr = new DataOutputStream(http.getOutputStream())) {
        wr.writeBytes(payload.toJSONString());
        wr.flush();
    }
}

From source file:gribbit.util.RequestBuilder.java

/**
 * Make a GET or POST request, handling up to 6 redirects, and return the response. If isBinaryResponse is true,
 * returns a byte[] array, otherwise returns the response as a String.
 *//*from   w w  w  .  j av a  2s.  c o  m*/
private static Object makeRequest(String url, String[] keyValuePairs, boolean isGET, boolean isBinaryResponse,
        int redirDepth) {
    if (redirDepth > 6) {
        throw new IllegalArgumentException("Too many redirects");
    }
    HttpURLConnection connection = null;
    try {
        // Add the URL query params if this is a GET request
        String reqURL = isGET ? url + "?" + WebUtils.buildQueryString(keyValuePairs) : url;
        connection = (HttpURLConnection) new URL(reqURL).openConnection();
        connection.setDoOutput(true);
        connection.setDoInput(true);
        connection.setInstanceFollowRedirects(false);
        connection.setRequestMethod(isGET ? "GET" : "POST");
        connection.setUseCaches(false);
        connection.setRequestProperty("User-Agent",
                "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) "
                        + "Chrome/43.0.2357.125 Safari/537.36");
        if (!isGET) {
            // Send the body if this is a POST request
            connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
            connection.setRequestProperty("charset", "utf-8");
            String params = WebUtils.buildQueryString(keyValuePairs);
            connection.setRequestProperty("Content-Length", Integer.toString(params.length()));
            try (DataOutputStream w = new DataOutputStream(connection.getOutputStream())) {
                w.writeBytes(params);
                w.flush();
            }
        }
        if (connection.getResponseCode() == HttpResponseStatus.FOUND.code()) {
            // Follow a redirect. For safety, the params are not passed on, and the method is forced to GET.
            return makeRequest(connection.getHeaderField("Location"), /* keyValuePairs = */null, /* isGET = */
                    true, isBinaryResponse, redirDepth + 1);
        } else if (connection.getResponseCode() == HttpResponseStatus.OK.code()) {
            // For 200 OK, return the text of the response
            if (isBinaryResponse) {
                ByteArrayOutputStream output = new ByteArrayOutputStream(32768);
                IOUtils.copy(connection.getInputStream(), output);
                return output.toByteArray();
            } else {
                StringWriter writer = new StringWriter(1024);
                IOUtils.copy(connection.getInputStream(), writer, "UTF-8");
                return writer.toString();
            }
        } else {
            throw new IllegalArgumentException(
                    "Got non-OK HTTP response code: " + connection.getResponseCode());
        }
    } catch (Exception e) {
        throw new IllegalArgumentException(
                "Exception during " + (isGET ? "GET" : "POST") + " request: " + e.getMessage(), e);
    } finally {
        if (connection != null) {
            try {
                connection.disconnect();
            } catch (Exception e) {
            }
        }
    }
}

From source file:org.alfresco.mobile.android.api.network.NetworkHttpInvoker.java

private static Response invoke(UrlBuilder url, String method, String contentType,
        Map<String, List<String>> httpHeaders, Output writer, boolean forceOutput, BigInteger offset,
        BigInteger length, Map<String, String> params) {
    try {/*from ww  w  .  j a  v a 2 s  .  co  m*/
        // Log.d("URL", url.toString());

        // connect
        HttpURLConnection conn = (HttpURLConnection) (new URL(url.toString())).openConnection();
        conn.setRequestMethod(method);
        conn.setDoInput(true);
        conn.setDoOutput(writer != null || forceOutput);
        conn.setAllowUserInteraction(false);
        conn.setUseCaches(false);
        conn.setRequestProperty("User-Agent", ClientVersion.OPENCMIS_CLIENT);

        // set content type
        if (contentType != null) {
            conn.setRequestProperty("Content-Type", contentType);
        }
        // set other headers
        if (httpHeaders != null) {
            for (Map.Entry<String, List<String>> header : httpHeaders.entrySet()) {
                if (header.getValue() != null) {
                    for (String value : header.getValue()) {
                        conn.addRequestProperty(header.getKey(), value);
                    }
                }
            }
        }

        // range
        BigInteger tmpOffset = offset;
        if ((tmpOffset != null) || (length != null)) {
            StringBuilder sb = new StringBuilder("bytes=");

            if ((tmpOffset == null) || (tmpOffset.signum() == -1)) {
                tmpOffset = BigInteger.ZERO;
            }

            sb.append(tmpOffset.toString());
            sb.append("-");

            if ((length != null) && (length.signum() == 1)) {
                sb.append(tmpOffset.add(length.subtract(BigInteger.ONE)).toString());
            }

            conn.setRequestProperty("Range", sb.toString());
        }

        conn.setRequestProperty("Accept-Encoding", "gzip,deflate");

        // add url form parameters
        if (params != null) {
            DataOutputStream ostream = null;
            OutputStream os = null;
            try {
                os = conn.getOutputStream();
                ostream = new DataOutputStream(os);

                Set<String> parameters = params.keySet();
                StringBuffer buf = new StringBuffer();

                int paramCount = 0;
                for (String it : parameters) {
                    String parameterName = it;
                    String parameterValue = (String) params.get(parameterName);

                    if (parameterValue != null) {
                        parameterValue = URLEncoder.encode(parameterValue, "UTF-8");
                        if (paramCount > 0) {
                            buf.append("&");
                        }
                        buf.append(parameterName);
                        buf.append("=");
                        buf.append(parameterValue);
                        ++paramCount;
                    }
                }
                ostream.writeBytes(buf.toString());
            } finally {
                if (ostream != null) {
                    ostream.flush();
                    ostream.close();
                }
                IOUtils.closeStream(os);
            }
        }

        // send data

        if (writer != null) {
            // conn.setChunkedStreamingMode((64 * 1024) - 1);
            OutputStream connOut = null;
            connOut = conn.getOutputStream();
            OutputStream out = new BufferedOutputStream(connOut, BUFFER_SIZE);
            writer.write(out);
            out.flush();
        }

        // connect
        conn.connect();

        // get stream, if present
        int respCode = conn.getResponseCode();
        InputStream inputStream = null;
        if ((respCode == HttpStatus.SC_OK) || (respCode == HttpStatus.SC_CREATED)
                || (respCode == HttpStatus.SC_NON_AUTHORITATIVE_INFORMATION)
                || (respCode == HttpStatus.SC_PARTIAL_CONTENT)) {
            inputStream = conn.getInputStream();
        }

        // get the response
        return new Response(respCode, conn.getResponseMessage(), conn.getHeaderFields(), inputStream,
                conn.getErrorStream());
    } catch (Exception e) {
        throw new CmisConnectionException("Cannot access " + url + ": " + e.getMessage(), e);
    }
}

From source file:org.bibsonomy.util.WebUtils.java

/**
 * Returns the cookies returned by the server on accessing the URL. 
 * The format of the returned cookies is as
 * /* w  ww. j a  v  a 2 s.  c o m*/
 * 
 * @param url
 * @return The cookies as string, build by {@link #buildCookieString(List)}.
 * @throws IOException
 */
public static String getCookies(final URL url) throws IOException {
    final HttpURLConnection urlConn = (HttpURLConnection) url.openConnection();

    urlConn.setAllowUserInteraction(false);
    urlConn.setDoInput(true);
    urlConn.setDoOutput(false);
    urlConn.setUseCaches(false);

    urlConn.setRequestProperty(USER_AGENT_HEADER_NAME, USER_AGENT_PROPERTY_VALUE);

    urlConn.connect();

    final List<String> cookies = urlConn.getHeaderFields().get("Set-Cookie");
    urlConn.disconnect();

    return buildCookieString(cookies);
}

From source file:eu.geopaparazzi.library.network.NetworkUtilities.java

/**
 * Sends a string via POST to a given url.
 * /* w ww .j av  a 2  s  . co m*/
 * @param urlStr the url to which to send to.
 * @param string the string to send as post body.
 * @param user the user or <code>null</code>.
 * @param password the password or <code>null</code>.
 * @return the response.
 * @throws Exception
 */
public static String sendPost(String urlStr, String string, String user, String password) throws Exception {
    BufferedOutputStream wr = null;
    HttpURLConnection conn = null;
    try {
        conn = makeNewConnection(urlStr);
        conn.setRequestMethod("POST");
        conn.setDoOutput(true);
        conn.setDoInput(true);
        // conn.setChunkedStreamingMode(0);
        conn.setUseCaches(false);
        if (user != null && password != null) {
            conn.setRequestProperty("Authorization", getB64Auth(user, password));
        }
        conn.connect();

        // Make server believe we are form data...
        wr = new BufferedOutputStream(conn.getOutputStream());
        byte[] bytes = string.getBytes();
        wr.write(bytes);
        wr.flush();

        int responseCode = conn.getResponseCode();
        StringBuilder returnMessageBuilder = new StringBuilder();
        if (responseCode == HttpURLConnection.HTTP_OK) {
            BufferedReader br = new BufferedReader(new InputStreamReader(conn.getInputStream(), "utf-8"));
            while (true) {
                String line = br.readLine();
                if (line == null)
                    break;
                returnMessageBuilder.append(line + "\n");
            }
            br.close();
        }

        return returnMessageBuilder.toString();
    } catch (Exception e) {
        e.printStackTrace();
        throw e;
    } finally {
        if (conn != null)
            conn.disconnect();
    }
}

From source file:com.jooketechnologies.network.ServerUtilities.java

static JSONObject post(String endpoint, int action, Map<String, String> params) {
    URL url;//from   w ww . j  a  v  a2 s. c o  m
    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();
    byte[] bytes = body.getBytes();
    HttpURLConnection conn = null;
    try {
        conn = (HttpURLConnection) url.openConnection();
        conn.setDoOutput(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();
        InputStream is = conn.getInputStream();
        if (status != 200) {
            if (conn != null) {
                conn.disconnect();
            }
        } else {
            JSONObject jsonObject = streamToString(is);
            return jsonObject;
        }
    } catch (IOException e) {

        e.printStackTrace();
    }
    return null;

}

From source file:Main.java

@TargetApi(Build.VERSION_CODES.KITKAT)
public static String net(String strUrl, Map<String, Object> params, String method) throws Exception {
    HttpURLConnection conn = null;
    BufferedReader reader = null;
    String rs = null;/*from w w w .j  ava  2 s  .c o m*/
    try {
        StringBuffer sb = new StringBuffer();
        if (method == null || method.equals("GET")) {
            strUrl = strUrl + "?" + urlencode(params);
        }
        URL url = new URL(strUrl);
        conn = (HttpURLConnection) url.openConnection();
        if (method == null || method.equals("GET")) {
            conn.setRequestMethod("GET");
        } else {
            conn.setRequestMethod("POST");
            conn.setDoOutput(true);
        }
        conn.setRequestProperty("User-agent", userAgent);
        conn.setUseCaches(false);
        conn.setConnectTimeout(DEF_CONN_TIMEOUT);
        conn.setReadTimeout(DEF_READ_TIMEOUT);
        conn.setInstanceFollowRedirects(false);
        conn.connect();
        if (params != null && method.equals("POST")) {
            try (DataOutputStream out = new DataOutputStream(conn.getOutputStream())) {
                out.writeBytes(urlencode(params));
            }
        }
        InputStream is = conn.getInputStream();
        reader = new BufferedReader(new InputStreamReader(is, DEF_CHATSET));
        String strRead = null;
        while ((strRead = reader.readLine()) != null) {
            sb.append(strRead);
        }
        rs = sb.toString();
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        if (reader != null) {
            reader.close();
        }
        if (conn != null) {
            conn.disconnect();
        }
    }
    return rs;
}

From source file:org.bibsonomy.util.WebUtils.java

/**
 * Do a POST request to the given URL with the given content. Assume the charset of the result to be charset.
 * //from   w  w  w . j av a  2s . c  o  m
 * @param url
 * @param postContent
 * @param charset - the assumed charset of the result. If <code>null</code>, the charset from the response header is used.
 * @param cookie - the Cookie to be attached to the request. If <code>null</code>, the Cookie header is not set.
 * @return The content of the result page.
 * 
 * @throws IOException
 * 
 * @Deprecated
 */
public static String getPostContentAsString(final URL url, final String postContent, final String charset,
        final String cookie) throws IOException {
    final HttpURLConnection urlConn = (HttpURLConnection) url.openConnection();
    urlConn.setAllowUserInteraction(false);
    urlConn.setDoInput(true);
    urlConn.setDoOutput(true);
    urlConn.setUseCaches(false);
    urlConn.setRequestMethod("POST");
    urlConn.setRequestProperty(CONTENT_TYPE_HEADER_NAME, "application/x-www-form-urlencoded");

    /*
     * set user agent (see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html) since some 
     * pages require it to download content.
     */
    urlConn.setRequestProperty(USER_AGENT_HEADER_NAME, USER_AGENT_PROPERTY_VALUE);

    if (cookie != null) {
        urlConn.setRequestProperty(COOKIE_HEADER_NAME, cookie);
    }

    writeStringToStream(postContent, urlConn.getOutputStream());

    // connect
    urlConn.connect();

    /*
     * extract character encoding from header
     */
    final String activeCharset;
    if (charset == null) {
        activeCharset = getCharset(urlConn);
    } else {
        activeCharset = charset;
    }

    /*
     * FIXME: check content type header to ensure that we only read textual 
     * content (and not a PDF, radio stream or DVD image ...)
     */

    // write into string writer
    final StringBuilder out = inputStreamToStringBuilder(urlConn.getInputStream(), activeCharset);

    // disconnect
    urlConn.disconnect();

    return out.toString();
}