Example usage for java.net HttpURLConnection getHeaderFields

List of usage examples for java.net HttpURLConnection getHeaderFields

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Introduction

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

Prototype

public Map<String, List<String>> getHeaderFields()

Source Link

Document

Returns an unmodifiable Map of the header fields.

Usage

From source file:com.autonavi.gxdtaojin.toolbox.HurlStack.java

@Override
public HttpResponse performRequest(Request<?> request, Map<String, String> additionalHeaders)
        throws IOException, AuthFailureError {
    String url = request.getUrl();
    HashMap<String, String> map = new HashMap<String, String>();
    map.putAll(request.getHeaders());// www .  j a v a  2s . c  o  m
    map.putAll(additionalHeaders);
    if (mUrlRewriter != null) {
        String rewritten = mUrlRewriter.rewriteUrl(url);
        if (rewritten == null) {
            throw new IOException("URL blocked by rewriter: " + url);
        }
        url = rewritten;
    }
    URL parsedUrl = null;
    try {
        parsedUrl = new URL(url);
    } catch (Throwable t) {
        t.printStackTrace();
        parsedUrl = new URL("http://www.google.com");
    }
    HttpURLConnection connection = openConnection(parsedUrl, request);
    for (String headerName : map.keySet()) {
        connection.addRequestProperty(headerName, map.get(headerName));
    }
    setConnectionParametersForRequest(connection, request);
    // Initialize HttpResponse with data from the HttpURLConnection.
    ProtocolVersion protocolVersion = new ProtocolVersion("HTTP", 1, 1);
    int responseCode = connection.getResponseCode();
    if (responseCode == -1) {
        // -1 is returned by getResponseCode() if the response code could not be retrieved.
        // Signal to the caller that something was wrong with the connection.
        throw new IOException("Could not retrieve response code from HttpUrlConnection.");
    }
    StatusLine responseStatus = new BasicStatusLine(protocolVersion, connection.getResponseCode(),
            connection.getResponseMessage());
    BasicHttpResponse response = new BasicHttpResponse(responseStatus);
    response.setEntity(entityFromConnection(connection));
    for (Entry<String, List<String>> header : connection.getHeaderFields().entrySet()) {
        if (header.getKey() != null) {
            Header h = new BasicHeader(header.getKey(), header.getValue().get(0));
            response.addHeader(h);
        }
    }
    return response;
}

From source file:com.mome.main.netframe.volley.toolbox.HurlStack.java

@Override
public HttpResponse performRequest(Request<?> request, Map<String, String> additionalHeaders)
        throws IOException, AuthFailureError {
    String url = request.getUrl();
    HashMap<String, String> map = new HashMap<String, String>();
    map.putAll(request.getHeaders());//from   w w w  .  j  a va  2 s . com
    map.putAll(additionalHeaders);
    if (mUrlRewriter != null) {
        String rewritten = mUrlRewriter.rewriteUrl(url);
        if (rewritten == null) {
            throw new IOException("URL blocked by rewriter: " + url);
        }
        url = rewritten;
    }

    URL parsedUrl = new URL(url);
    HttpURLConnection connection = openConnection(parsedUrl, request);
    for (String headerName : map.keySet()) {
        connection.addRequestProperty(headerName, map.get(headerName));
    }
    setConnectionParametersForRequest(connection, request);
    // Initialize HttpResponse with data from the HttpURLConnection.
    ProtocolVersion protocolVersion = new ProtocolVersion("HTTP", 1, 1);
    int responseCode = connection.getResponseCode();
    if (responseCode == -1) {
        // -1 is returned by getResponseCode() if the response code could not be retrieved.
        // Signal to the caller that something was wrong with the connection.
        throw new IOException("Could not retrieve response code from HttpUrlConnection.");
    }
    StatusLine responseStatus = new BasicStatusLine(protocolVersion, connection.getResponseCode(),
            connection.getResponseMessage());
    BasicHttpResponse response = new BasicHttpResponse(responseStatus);
    response.setEntity(entityFromConnection(connection));
    for (Entry<String, List<String>> header : connection.getHeaderFields().entrySet()) {
        if (header.getKey() != null) {
            Header h = new BasicHeader(header.getKey(), header.getValue().get(0));
            response.addHeader(h);
        }
    }
    return response;
}

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

@Override
public HttpResponse performRequest(Request<?> request, Map<String, String> additionalHeaders)
        throws IOException, AuthFailureError {
    String url = request.getUrl();

    HashMap<String, String> map = new HashMap<String, String>();
    map.putAll(request.getHeaders());//from   www. ja va 2  s .  com
    map.putAll(additionalHeaders);
    if (mUrlRewriter != null) {
        String rewritten = mUrlRewriter.rewriteUrl(url);
        if (rewritten == null) {
            throw new IOException("URL blocked by rewriter: " + url);
        }
        url = rewritten;
    }
    URL parsedUrl = new URL(url);
    HttpURLConnection connection = openConnection(parsedUrl, request);

    for (String headerName : map.keySet()) {
        connection.addRequestProperty(headerName, map.get(headerName));
    }
    setConnectionParametersForRequest(connection, request);
    // Initialize HttpResponse with data from the HttpURLConnection.
    ProtocolVersion protocolVersion = new ProtocolVersion("HTTP", 1, 1);
    int responseCode = connection.getResponseCode();
    if (responseCode == -1) {
        // -1 is returned by getResponseCode() if the response code could not be retrieved.
        // Signal to the caller that something was wrong with the connection.
        throw new IOException("Could not retrieve response code from HttpUrlConnection.");
    }
    StatusLine responseStatus = new BasicStatusLine(protocolVersion, connection.getResponseCode(),
            connection.getResponseMessage());
    BasicHttpResponse response = new BasicHttpResponse(responseStatus);
    response.setEntity(entityFromConnection(connection));
    for (Entry<String, List<String>> header : connection.getHeaderFields().entrySet()) {
        if (header.getKey() != null) {
            Header h = new BasicHeader(header.getKey(), header.getValue().get(0));
            response.addHeader(h);
        }
    }
    return response;
}

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

public static HttpResponse doPost(URL endpoint, String postBody, Map<String, String> headers) throws Exception {
    HttpURLConnection urlConnection = null;
    try {/*from   ww w . j  ava2  s  . c o m*/
        urlConnection = (HttpURLConnection) endpoint.openConnection();
        try {
            urlConnection.setRequestMethod("POST");
        } catch (ProtocolException e) {
            throw new Exception("Shouldn't happen: HttpURLConnection doesn't support POST??", 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));
            }
        }

        OutputStream out = urlConnection.getOutputStream();
        try {
            Writer writer = new OutputStreamWriter(out, "UTF-8");
            writer.write(postBody);
            writer.close();
        } catch (IOException e) {
            throw new Exception("IOException while posting data", e);
        } finally {
            if (out != null) {
                out.close();
            }
        }

        // 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.portfolio.data.attachment.FileServlet.java

void InitAnswer(HttpURLConnection connection, HttpServletResponse response, String referer)
        throws MalformedURLException, IOException {
    String ref = null;/*from  w  w w.java2 s .  co m*/
    if (referer != null) {
        int first = referer.indexOf('/', 7);
        int last = referer.lastIndexOf('/');
        ref = referer.substring(first, last);
    }

    response.setContentType(connection.getContentType());
    response.setStatus(connection.getResponseCode());
    response.setContentLength(connection.getContentLength());

    /// Transfer headers
    Map<String, List<String>> headers = connection.getHeaderFields();
    int size = headers.size();
    for (int i = 1; i < size; ++i) {
        String key = connection.getHeaderFieldKey(i);
        String value = connection.getHeaderField(i);
        //         response.setHeader(key, value);
        response.addHeader(key, value);
    }

    /// Deal with correct path with set cookie
    List<String> setValues = headers.get("Set-Cookie");
    if (setValues != null) {
        String setVal = setValues.get(0);
        int pathPlace = setVal.indexOf("Path=");
        if (pathPlace > 0) {
            setVal = setVal.substring(0, pathPlace + 5); // Some assumption, may break
            setVal = setVal + ref;

            response.setHeader("Set-Cookie", setVal);
        }
    }
}

From source file:com.chen.cy.talkimage.network.xvolley.XHurlStack.java

@Override
public HttpResponse performRequest(Request<?> request, Map<String, String> additionalHeaders)
        throws IOException, AuthFailureError {
    String url = request.getUrl();
    HashMap<String, String> map = new HashMap<String, String>();
    map.putAll(request.getHeaders());/*from w  w w.  jav  a2s  . c om*/
    map.putAll(additionalHeaders);
    if (mUrlRewriter != null) {
        String rewritten = mUrlRewriter.rewriteUrl(url);
        if (rewritten == null) {
            throw new IOException("URL blocked by rewriter: " + url);
        }
        url = rewritten;
    }
    URL parsedUrl = new URL(url);
    HttpURLConnection connection = openConnection(parsedUrl, request);
    for (String headerName : map.keySet()) {
        connection.addRequestProperty(headerName, map.get(headerName));
    }
    setConnectionParametersForRequest(connection, request);
    // Initialize HttpResponse with data from the HttpURLConnection.
    ProtocolVersion protocolVersion = new ProtocolVersion("HTTP", 1, 1);
    int responseCode = connection.getResponseCode();
    if (responseCode == -1) {
        // -1 is returned by getResponseCode() if the response code could not be retrieved.
        // Signal to the caller that something was wrong with the connection.
        throw new IOException("Could not retrieve response code from HttpUrlConnection.");
    }
    StatusLine responseStatus = new BasicStatusLine(protocolVersion, connection.getResponseCode(),
            connection.getResponseMessage());
    BasicHttpResponse response = new BasicHttpResponse(responseStatus);
    response.setEntity(entityFromConnection(connection));
    for (Entry<String, List<String>> header : connection.getHeaderFields().entrySet()) {
        if (header.getKey() != null) {
            //
            // ?????
            for (int i = 0; i < header.getValue().size(); i++) {
                Header h = new BasicHeader(header.getKey(), header.getValue().get(i));
                response.addHeader(h);
            }
        }
    }
    return response;
}

From source file:cn.garymb.wechatmoments.common.OkHttpStack.java

@Override
@SuppressWarnings("deprecation")
public HttpResponse performRequest(Request<?> request, Map<String, String> additionalHeaders)
        throws IOException, AuthFailureError {
    String url = request.getUrl();
    HashMap<String, String> map = new HashMap<>();
    map.putAll(request.getHeaders());//from ww  w .  j  a  v  a 2s.co m
    map.putAll(additionalHeaders);
    if (mUrlRewriter != null) {
        String rewritten = mUrlRewriter.rewriteUrl(url);
        if (rewritten == null) {
            throw new IOException("URL blocked by rewriter: " + url);
        }
        url = rewritten;
    }
    URL parsedUrl = new URL(url);
    OkUrlFactory okFactory = new OkUrlFactory(mClient);
    HttpURLConnection connection = openOkHttpURLConnection(okFactory, parsedUrl, request);
    for (String headerName : map.keySet()) {
        connection.addRequestProperty(headerName, map.get(headerName));
    }
    setConnectionParametersForRequest(connection, request);
    // Initialize HttpResponse with data from the HttpURLConnection.
    ProtocolVersion protocolVersion = new ProtocolVersion("HTTP", 1, 1);
    int responseCode = connection.getResponseCode();
    if (responseCode == -1) {
        // -1 is returned by getResponseCode() if the response code could not be retrieved.
        // Signal to the caller that something was wrong with the connection.
        throw new IOException("Could not retrieve response code from HttpUrlConnection.");
    }
    StatusLine responseStatus = new BasicStatusLine(protocolVersion, connection.getResponseCode(),
            connection.getResponseMessage());
    BasicHttpResponse response = new BasicHttpResponse(responseStatus);
    response.setEntity(entityFromConnection(connection));
    for (Entry<String, List<String>> header : connection.getHeaderFields().entrySet()) {
        if (header.getKey() != null) {
            Header h = new BasicHeader(header.getKey(), header.getValue().get(0));
            response.addHeader(h);
        }
    }
    return response;
}

From source file:com.amazonaws.http.UrlHttpClient.java

@SuppressWarnings("checkstyle:emptyblock")
HttpResponse createHttpResponse(final HttpRequest request, final HttpURLConnection connection)
        throws IOException {
    // connection.setDoOutput(true);
    final String statusText = connection.getResponseMessage();
    final int statusCode = connection.getResponseCode();
    InputStream content = connection.getErrorStream();
    if (content == null) {
        // HEAD method doesn't have a body
        if (!"HEAD".equals(request.getMethod())) {
            try {
                content = connection.getInputStream();
            } catch (final IOException ioe) {
                // getInputStream() can throw an exception when there is no
                // input stream.
            }//from w  w w.j a v  a2  s.c  om
        }
    }

    final HttpResponse.Builder builder = HttpResponse.builder().statusCode(statusCode).statusText(statusText)
            .content(content);
    for (final Map.Entry<String, List<String>> header : connection.getHeaderFields().entrySet()) {
        // skip null field that stores connection status
        if (header.getKey() == null) {
            continue;
        }
        // No AWS service return a list of header values, so it's safe to
        // take the first one.
        builder.header(header.getKey(), header.getValue().get(0));
    }

    return builder.build();
}

From source file:winterwell.jtwitter.URLConnectionHttpClient.java

private String processError2_reason(HttpURLConnection connection) throws IOException {
    // Try for a helpful message from Twitter
    InputStream es = connection.getErrorStream();
    String errorPage = null;//from w w w  .ja  v a  2s  .c  om
    if (es != null) {
        try {
            errorPage = read(es);
            // is it json?         
            JSONObject je = new JSONObject(errorPage);
            String error = je.getString("error");
            if (error != null && error.length() != 0) {
                return error;
            }
        } catch (Exception e) {
            // guess not!            
        }
    }
    // normal error channels
    String error = connection.getResponseMessage();
    Map<String, List<String>> headers = connection.getHeaderFields();
    List<String> errorMessage = headers.get(null);
    if (errorMessage != null && !errorMessage.isEmpty()) {
        error += "\n" + errorMessage.get(0);
    }
    if (errorPage != null && !errorPage.isEmpty()) {
        error += "\n" + errorPage;
    }
    return error;
}

From source file:com.gelakinetic.mtgfam.FamiliarActivity.java

/**
 * Open an inputStream to the HTML content at the given URL, making recursive calls for
 * redirection (HTTP 301, 302)./*www .  j a v a  2  s  .co  m*/
 *
 * @param url            The URL to open a stream to
 * @param logWriter      A PrintWriter to log debug info to. Can be null
 * @param recursionLevel The redirect recursion level. Starts at 0, doesn't go past 10
 * @return An InputStream to the content at the URL, or null
 * @throws IOException Thrown if something goes terribly wrong
 */
private static @Nullable InputStream getHttpInputStream(URL url, @Nullable PrintWriter logWriter,
        int recursionLevel) throws IOException {

    /* Don't allow infinite recursion */
    if (recursionLevel > 10) {
        return null;
    }

    /* Make the URL & connection objects, follow redirects, timeout after 5s */
    HttpURLConnection.setFollowRedirects(true);
    HttpURLConnection connection = (HttpURLConnection) (url).openConnection();
    connection.setConnectTimeout(5000);
    connection.setInstanceFollowRedirects(true);

    /* If the connection is not OK, debug print the response */
    if (connection.getResponseCode() != HttpURLConnection.HTTP_OK) {
        /* Log the URL and response code */
        if (logWriter != null) {
            logWriter.write("URL : " + url.toString() + '\n');
            logWriter.write("RESP: " + connection.getResponseCode() + '\n');
        }

        /* Comb through header fields for a redirect location */
        URL nextUrl = null;
        for (String key : connection.getHeaderFields().keySet()) {
            /* Log the header */
            if (logWriter != null) {
                logWriter.write("HDR : [" + key + "] " + connection.getHeaderField(key) + '\n');
            }

            /* Found the URL to try next */
            if (key != null && key.equalsIgnoreCase("location")) {
                nextUrl = new URL(connection.getHeaderField(key));
            }
        }

        /* If the next location is still null, comb through the HTML
         * This is kind of a hack for when sites.google.com is serving up malformed 302
         * redirects and all the header fields end up being in this input stream
         */
        if (nextUrl == null) {
            /* Open the stream */
            BufferedReader br = new BufferedReader(new InputStreamReader(connection.getInputStream()));
            String line;
            int linesRead = 0;
            /* Read one line at a time */
            while ((line = br.readLine()) != null) {
                /* Log the line */
                if (logWriter != null) {
                    logWriter.write("HTML:" + line + '\n');
                }
                /* Check for a location */
                if (line.toLowerCase().contains("location")) {
                    nextUrl = new URL(line.split("\\s+")[1]);
                    break;
                }
                /* Count the line, make sure to quit after 1000 */
                linesRead++;
                if (linesRead > 1000) {
                    break;
                }
            }
        }

        if (nextUrl != null) {
            /* If there is a URL to follow, follow it */
            return getHttpInputStream(nextUrl, logWriter, recursionLevel + 1);
        } else {
            /* Otherwise return null */
            return null;
        }

    } else {
        /* HTTP response is A-OK. Return the inputStream */
        return connection.getInputStream();
    }
}