Example usage for java.net HttpURLConnection getHeaderField

List of usage examples for java.net HttpURLConnection getHeaderField

  1. HOME
  2. Java
  3. java
  4. java.net.*
  5. HttpURLConnection
  6. getHeaderField

Introduction

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

Prototype

public String getHeaderField(int n)

Source Link

Document

Returns the value for the n th header field.

Usage

From source file:org.bndtools.rt.repository.client.RemoteRestRepository.java

@Override
public PutResult put(InputStream inputStream, PutOptions options) throws Exception {
    URI postUri = new URI(baseUri.getScheme(), baseUri.getUserInfo(), baseUri.getHost(), baseUri.getPort(),
            baseUri.getPath() + "/bundles", null, null);

    HttpURLConnection conn = (HttpURLConnection) postUri.toURL().openConnection();
    conn.setRequestProperty(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_OCTET_STREAM);
    conn.setRequestMethod("POST");
    conn.setDoOutput(true);/*from w w  w .java2 s .c  o  m*/

    // Send the data
    byte[] buffer = new byte[1024];
    OutputStream postStream = conn.getOutputStream();
    try {
        while (true) {
            int bytesRead = inputStream.read(buffer, 0, 1024);
            if (bytesRead < 0)
                break;
            postStream.write(buffer, 0, bytesRead);
        }
        postStream.flush();
    } finally {
        IO.close(postStream);
    }

    // Read the response header
    int response = conn.getResponseCode();
    if (response < 200 || response >= 300)
        throw new Exception(String.format("Server returned error code %d", response));
    String location = conn.getHeaderField("Location");
    if (location == null)
        throw new Exception("Server did not return a Location header");

    PutResult result = new PutResult();
    result.artifact = new URI(location);
    result.digest = null;

    return result;
}

From source file:com.dv.Utils.DvFileUtil.java

/**
  * ????.// w  w w  . ja va2 s  .  c  om
  * @param url ?
  * @return ??
  */
public static String getRealFileNameFromUrl(String url) {
    String name = null;
    try {
        if (DvStrUtil.isEmpty(url)) {
            return name;
        }

        URL mUrl = new URL(url);
        HttpURLConnection mHttpURLConnection = (HttpURLConnection) mUrl.openConnection();
        mHttpURLConnection.setConnectTimeout(5 * 1000);
        mHttpURLConnection.setRequestMethod("GET");
        mHttpURLConnection.setRequestProperty("Accept",
                "image/gif, image/jpeg, image/pjpeg, image/pjpeg, application/x-shockwave-flash, application/xaml+xml, application/vnd.ms-xpsdocument, application/x-ms-xbap, application/x-ms-application, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, */*");
        mHttpURLConnection.setRequestProperty("Accept-Language", "zh-CN");
        mHttpURLConnection.setRequestProperty("Referer", url);
        mHttpURLConnection.setRequestProperty("Charset", "UTF-8");
        mHttpURLConnection.setRequestProperty("User-Agent", "");
        mHttpURLConnection.setRequestProperty("Connection", "Keep-Alive");
        mHttpURLConnection.connect();
        if (mHttpURLConnection.getResponseCode() == 200) {
            for (int i = 0;; i++) {
                String mine = mHttpURLConnection.getHeaderField(i);
                if (mine == null) {
                    break;
                }
                if ("content-disposition".equals(mHttpURLConnection.getHeaderFieldKey(i).toLowerCase())) {
                    Matcher m = Pattern.compile(".*filename=(.*)").matcher(mine.toLowerCase());
                    if (m.find())
                        return m.group(1).replace("\"", "");
                }
            }
        }
    } catch (Exception e) {
        e.printStackTrace();
        DvLogUtil.e(DvFileUtil.class, "???");
    }
    return name;
}

From source file:org.wso2.carbon.appmanager.integration.ui.Util.HttpUtil.java

public static HttpResponse doDelete(URL endpoint, Map<String, String> headers) throws Exception {
    HttpURLConnection urlConnection = null;
    try {/*from   w  w w. j  ava 2s  . c  om*/
        urlConnection = (HttpURLConnection) endpoint.openConnection();
        try {
            urlConnection.setRequestMethod("DELETE");
        } catch (ProtocolException e) {
            throw new Exception("Shouldn't happen: HttpURLConnection doesn't support Delete??", e);
        }
        urlConnection.setDoOutput(true);
        urlConnection.setDoInput(true);
        urlConnection.setUseCaches(false);
        urlConnection.setAllowUserInteraction(false);

        // setting headers
        if (headers != null && headers.size() > 0) {
            Iterator<String> itr = headers.keySet().iterator();
            while (itr.hasNext()) {
                String key = itr.next();
                urlConnection.setRequestProperty(key, headers.get(key));
            }
        }

        // Get the response
        StringBuilder sb = new StringBuilder();
        BufferedReader rd = null;
        try {
            rd = new BufferedReader(new InputStreamReader(urlConnection.getInputStream()));
            String line;
            while ((line = rd.readLine()) != null) {
                sb.append(line);
            }
        } catch (FileNotFoundException ignored) {
        } finally {
            if (rd != null) {
                rd.close();
            }
        }
        Iterator<String> itr = urlConnection.getHeaderFields().keySet().iterator();
        Map<String, String> responseHeaders = new HashMap();
        while (itr.hasNext()) {
            String key = itr.next();
            if (key != null) {
                responseHeaders.put(key, urlConnection.getHeaderField(key));
            }
        }
        return new HttpResponse(sb.toString(), urlConnection.getResponseCode(), responseHeaders);

    } catch (IOException e) {
        throw new Exception("Connection error (is server running at " + endpoint + " ?): " + e);
    } finally {
        if (urlConnection != null) {
            urlConnection.disconnect();
        }
    }
}

From source file:com.ontotext.s4.client.HttpClient.java

/**
* Make an API request and return the raw data from the response as an
* InputStream./*from   ww  w .j av a 2  s  . c o m*/
*
* @param target the URL to request (relative URLs will resolve against the {@link #getBaseUrl() base URL}).
* @param method the request method (GET, POST, DELETE, etc.)
* @param requestBody the object that should be serialized to JSON as the request body.
*          If <code>null</code> no request body is sent
* @param extraHeaders any additional HTTP headers, specified as an alternating sequence of header names and values
* @return for a successful response, the response stream, or <code>null</code> for a 201 response
* @throws HttpClientException if an exception occurs during processing,
*           or the server returns a 4xx or 5xx error response
*/
public InputStream requestForStream(String target, String method, Object requestBody, String... extraHeaders)
        throws HttpClientException {

    try {
        HttpURLConnection connection = sendRequest(target, method, requestBody, extraHeaders);
        int responseCode = connection.getResponseCode();
        if (responseCode == HttpURLConnection.HTTP_NO_CONTENT) {
            // successful response with no content
            return null;
        } else if (responseCode >= 400) {
            readError(connection);
            return null; // not reachable, readError always throws exception
        } else if (responseCode >= 300) {
            // redirect - all redirects we care about from the S4
            // APIs are 303. We have to follow them manually to make
            // authentication work properly.
            String location = connection.getHeaderField("Location");
            // consume body
            InputStream stream = connection.getInputStream();
            IOUtils.copy(stream, new NullOutputStream());
            IOUtils.closeQuietly(stream);
            // follow the redirect
            return requestForStream(location, method, requestBody, extraHeaders);
        } else {
            return connection.getInputStream();
        }
    } catch (IOException e) {
        throw new HttpClientException(e);
    }
}

From source file:manchester.synbiochem.datacapture.SeekConnector.java

public URL createExperimentalAssay(User user, Study study, String description, String title) {
    try {//from ww  w .j  a  va 2s .  c  om
        MultipartFormData form = makeAssayCreateForm(user, study, title, description, JERM_EXPERIMENT);
        log.info("creating experimental assay with title " + title);
        HttpURLConnection c = connect("/assays");
        try {
            switch (postForm(c, form)) {
            case CREATED:
            case FOUND:
                /*
                 * Invalidate the assay cache; we know there's something new
                 * not in it.
                 */
                assayCacheTimestamp = null;
                URL url = new URL(seek, c.getHeaderField("Location"));
                log.info("assay created with location " + url);
                return url;
            case SERVICE_UNAVAILABLE:
                throw new ServiceUnavailableException("SEEK is not available");
            default:
                readErrorFromConnection(c, "problem in form post", "write to SEEK failed with code %d: %s");
            case OK:
                return null;
            }
        } finally {
            c.disconnect();
        }
    } catch (IOException e) {
        throw new InternalServerErrorException("HTTP error talking to SEEK", e);
    }
}

From source file:cn.org.eshow.framwork.util.AbFileUtil.java

/**
  * ????./*  w  w  w.  j  a  va2 s. co m*/
  * @param url ?
  * @return ??
  */
public static String getRealFileNameFromUrl(String url) {
    String name = null;
    try {
        if (AbStrUtil.isEmpty(url)) {
            return name;
        }

        URL mUrl = new URL(url);
        HttpURLConnection mHttpURLConnection = (HttpURLConnection) mUrl.openConnection();
        mHttpURLConnection.setConnectTimeout(5 * 1000);
        mHttpURLConnection.setRequestMethod("GET");
        mHttpURLConnection.setRequestProperty("Accept",
                "image/gif, image/jpeg, image/pjpeg, image/pjpeg, application/x-shockwave-flash, application/xaml+xml, application/vnd.ms-xpsdocument, application/x-ms-xbap, application/x-ms-application, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, */*");
        mHttpURLConnection.setRequestProperty("Accept-Language", "zh-CN");
        mHttpURLConnection.setRequestProperty("Referer", url);
        mHttpURLConnection.setRequestProperty("Charset", "UTF-8");
        mHttpURLConnection.setRequestProperty("User-Agent", "");
        mHttpURLConnection.setRequestProperty("Connection", "Keep-Alive");
        mHttpURLConnection.connect();
        if (mHttpURLConnection.getResponseCode() == 200) {
            for (int i = 0;; i++) {
                String mine = mHttpURLConnection.getHeaderField(i);
                if (mine == null) {
                    break;
                }
                if ("content-disposition".equals(mHttpURLConnection.getHeaderFieldKey(i).toLowerCase())) {
                    Matcher m = Pattern.compile(".*filename=(.*)").matcher(mine.toLowerCase());
                    if (m.find())
                        return m.group(1).replace("\"", "");
                }
            }
        }
    } catch (Exception e) {
        e.printStackTrace();
        AbLogUtil.e(AbFileUtil.class, "???");
    }
    return name;
}

From source file:org.zend.sdklib.internal.target.ZendDevCloud.java

private String authenticate(String username, String password) throws IOException {
    URL url = new URL(baseUrl + USER_LOGIN);
    final String content = MessageFormat.format("username={0}&password={1}&Submit={2}",
            URLEncoder.encode(username, "UTF-8"), URLEncoder.encode(password, "UTF-8"));

    HttpURLConnection urlConn = (HttpURLConnection) url.openConnection();

    urlConn.setDoOutput(true);//ww  w  .j  a va 2s.  co  m
    urlConn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");

    DataOutputStream printout = new DataOutputStream(urlConn.getOutputStream());
    printout.writeBytes(content);
    printout.flush();
    printout.close();

    final int responseCode = urlConn.getResponseCode();
    if (responseCode != 302) {
        throw new IOException("Authentication error to: " + baseUrl);
    }

    String headerName;
    String cookie = null;
    for (int i = 1; (headerName = urlConn.getHeaderFieldKey(i)) != null; i++) {
        if ("Set-Cookie".equals(headerName)) {
            cookie = urlConn.getHeaderField(i);
        }
    }

    urlConn.disconnect();
    cookie = cookie.substring(0, cookie.indexOf(";"));
    return cookie;
}

From source file:org.apache.hadoop.fs.http.client.HttpFSFileSystem.java

private FSDataOutputStream uploadData(String method, Path f, Map<String, String> params, int bufferSize,
        int expectedStatus) throws IOException {
    HttpURLConnection conn = getConnection(method, params, f, true);
    conn.setInstanceFollowRedirects(false);
    boolean exceptionAlreadyHandled = false;
    try {// w  w  w  .ja  v a2 s.  c o m
        if (conn.getResponseCode() == HTTP_TEMPORARY_REDIRECT) {
            exceptionAlreadyHandled = true;
            String location = conn.getHeaderField("Location");
            if (location != null) {
                conn = getConnection(new URL(location), method);
                conn.setRequestProperty("Content-Type", UPLOAD_CONTENT_TYPE);
                try {
                    OutputStream os = new BufferedOutputStream(conn.getOutputStream(), bufferSize);
                    return new HttpFSDataOutputStream(conn, os, expectedStatus, statistics);
                } catch (IOException ex) {
                    validateResponse(conn, expectedStatus);
                    throw ex;
                }
            } else {
                validateResponse(conn, HTTP_TEMPORARY_REDIRECT);
                throw new IOException("Missing HTTP 'Location' header for [" + conn.getURL() + "]");
            }
        } else {
            throw new IOException(MessageFormat.format("Expected HTTP status was [307], received [{0}]",
                    conn.getResponseCode()));
        }
    } catch (IOException ex) {
        if (exceptionAlreadyHandled) {
            throw ex;
        } else {
            validateResponse(conn, HTTP_TEMPORARY_REDIRECT);
            throw ex;
        }
    }
}

From source file:edu.asu.msse.dssoni.moviedescrpitionapp.JsonRPCClientViaThread.java

private String post(URL url, Map<String, String> headers, String data) throws Exception {
    HttpURLConnection connection = (HttpURLConnection) url.openConnection();
    if (headers != null) {
        for (Map.Entry<String, String> entry : headers.entrySet()) {
            connection.addRequestProperty(entry.getKey(), entry.getValue());
        }//  w w  w  .  j  a  v  a  2  s  .  c o  m
    }
    connection.addRequestProperty("Accept-Encoding", "gzip");
    connection.setRequestMethod("POST");
    connection.setDoOutput(true);
    connection.connect();
    OutputStream out = null;
    try {
        out = connection.getOutputStream();
        out.write(data.getBytes());
        out.flush();
        out.close();
        int statusCode = connection.getResponseCode();
        if (statusCode != HttpURLConnection.HTTP_OK) {
            throw new Exception("Unexpected status from post: " + statusCode);
        }
    } finally {
        if (out != null) {
            out.close();
        }
    }
    String responseEncoding = connection.getHeaderField("Content-Encoding");
    responseEncoding = (responseEncoding == null ? "" : responseEncoding.trim());
    ByteArrayOutputStream bos = new ByteArrayOutputStream();
    InputStream in = connection.getInputStream();
    try {
        in = connection.getInputStream();
        if ("gzip".equalsIgnoreCase(responseEncoding)) {
            in = new GZIPInputStream(in);
        }
        in = new BufferedInputStream(in);
        byte[] buff = new byte[1024];
        int n;
        while ((n = in.read(buff)) > 0) {
            bos.write(buff, 0, n);
        }
        bos.flush();
        bos.close();
    } finally {
        if (in != null) {
            in.close();
        }
    }
    android.util.Log.d(this.getClass().getSimpleName(),
            "json rpc request via http returned string " + bos.toString());
    return bos.toString();
}

From source file:com.micro.utils.F.java

/**
  * ????.//from w  w  w. j  a  v a2s.  c o m
  * @param url ?
  * @return ??
  */
public static String getRealFileNameFromUrl(String url) {
    String name = null;
    try {
        if (TextUtils.isEmpty(url)) {
            return name;
        }

        URL mUrl = new URL(url);
        HttpURLConnection mHttpURLConnection = (HttpURLConnection) mUrl.openConnection();
        mHttpURLConnection.setConnectTimeout(5 * 1000);
        mHttpURLConnection.setRequestMethod("GET");
        mHttpURLConnection.setRequestProperty("Accept",
                "image/gif, image/jpeg, image/pjpeg, image/pjpeg, application/x-shockwave-flash, application/xaml+xml, application/vnd.ms-xpsdocument, application/x-ms-xbap, application/x-ms-application, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, */*");
        mHttpURLConnection.setRequestProperty("Accept-Language", "zh-CN");
        mHttpURLConnection.setRequestProperty("Referer", url);
        mHttpURLConnection.setRequestProperty("Charset", "UTF-8");
        mHttpURLConnection.setRequestProperty("User-Agent", "");
        mHttpURLConnection.setRequestProperty("Connection", "Keep-Alive");
        mHttpURLConnection.connect();
        if (mHttpURLConnection.getResponseCode() == 200) {
            for (int i = 0;; i++) {
                String mine = mHttpURLConnection.getHeaderField(i);
                if (mine == null) {
                    break;
                }
                if ("content-disposition".equals(mHttpURLConnection.getHeaderFieldKey(i).toLowerCase())) {
                    Matcher m = Pattern.compile(".*filename=(.*)").matcher(mine.toLowerCase());
                    if (m.find())
                        return m.group(1).replace("\"", "");
                }
            }
        }
    } catch (Exception e) {
        e.printStackTrace();
        L.E("???");
    }
    return name;
}