Example usage for javax.servlet.http HttpServletResponse getHeader

Introduction

In this page you can find the example usage for javax.servlet.http HttpServletResponse getHeader.

Prototype

public String getHeader(String name);

Source Link

Document

Gets the value of the response header with the given name.

Usage

From source file:cn.sel.wetty.interceptor.AccessLogger.java

private String getHeaders(HttpServletResponse response) {
    List<String> headers = response.getHeaderNames().stream().collect(Collectors.toList());
    for (int i = 0; i < headers.size(); i++) {
        String header = headers.get(i);
        headers.set(i, String.format("%s=%s", header, response.getHeader(header)));
    }/* www  .j  a  va  2s .  co m*/
    return Arrays.toString(headers.toArray(new String[headers.size()]));
}

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From source file:net.eusashead.hateoas.conditional.interceptor.ConditionalResponseInterceptor.java

/**
 * After putting a resource//from   w  ww. ja v a  2  s . c o  m
 * update the ETag stored
 * to the new value
 * to ensure that clients
 * are required to re-request
 * the resource and get the latest
 * 
 * NB: Kills all ETags that might
 * have existed under this path for
 * different query strings
 * 
 * @param request
 * @param response
 */
private void postHandlePut(HttpServletRequest request, HttpServletResponse response) {
    service.evictAll(getUri(request));
    if (response.getHeader(ETAG) != null) {
        service.store(getUri(request), response.getHeader(ETAG));
    }

}

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From source file:com.lynn.controller.HttpAction.java

@RequestMapping("/header1.do")
@ResponseBody/*ww w. ja va2 s . c o  m*/
public String header1(HttpServletRequest request, HttpServletResponse response) {
    Enumeration e = request.getHeaderNames();
    String query = request.getQueryString();//??get??
    String etag = request.getHeader("etag");
    String if_none_match = request.getHeader("If-None-Match");
    String host = request.getHeader("host");
    String accept = request.getHeader("accept");
    String referer = request.getHeader("referer");
    String host1 = response.getHeader("host");
    String etag1 = response.getHeader("etag");
    String date1 = response.getHeader("date");
    String server1 = response.getHeader("server");
    return query;
}

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From source file:io.hops.hopsworks.api.admin.YarnUIProxyServlet.java

protected void copyResponseEntity(HttpMethod method, HttpServletResponse servletResponse) throws IOException {
    InputStream entity = method.getResponseBodyAsStream();
    if (entity != null) {
        OutputStream servletOutputStream = servletResponse.getOutputStream();
        if (servletResponse.getHeader("Content-Type") == null
                || servletResponse.getHeader("Content-Type").contains("html")) {
            String inputLine;/*from   ww w . j  av  a2 s  .  c om*/
            BufferedReader br = new BufferedReader(new InputStreamReader(entity));

            try {
                int contentSize = 0;
                String source = "http://" + method.getURI().getHost() + ":" + method.getURI().getPort();
                while ((inputLine = br.readLine()) != null) {
                    String outputLine = hopify(inputLine, source) + "\n";
                    byte[] output = outputLine.getBytes(Charset.forName("UTF-8"));
                    servletOutputStream.write(output);
                    contentSize += output.length;
                }
                br.close();
                servletResponse.setHeader("Content-Length", Integer.toString(contentSize));
            } catch (IOException e) {
                e.printStackTrace();
            }
        } else {
            org.apache.hadoop.io.IOUtils.copyBytes(entity, servletOutputStream, 4096, doLog);
        }
    }
}

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From source file:io.hops.hopsworks.api.admin.HDFSUIProxyServlet.java

protected void copyResponseEntity(HttpMethod method, HttpServletResponse servletResponse) throws IOException {
    InputStream entity = method.getResponseBodyAsStream();
    if (entity != null) {
        OutputStream servletOutputStream = servletResponse.getOutputStream();
        if (servletResponse.getHeader("Content-Type") == null
                || servletResponse.getHeader("Content-Type").contains("html")) {
            String inputLine;/*from w  w  w .  j  av a 2s.  c om*/
            BufferedReader br = new BufferedReader(new InputStreamReader(entity));

            try {
                int contentSize = 0;
                while ((inputLine = br.readLine()) != null) {
                    String outputLine = hopify(inputLine, targetUri) + "\n";
                    byte[] output = outputLine.getBytes(Charset.forName("UTF-8"));
                    servletOutputStream.write(output);
                    contentSize += output.length;
                }
                br.close();
                servletResponse.setHeader("Content-Length", Integer.toString(contentSize));
            } catch (IOException e) {
                e.printStackTrace();
            }
        } else {
            org.apache.hadoop.io.IOUtils.copyBytes(entity, servletOutputStream, 4096, doLog);
        }
    }
}

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From source file:com.sangupta.httpd.HttpdHandler.java

/**
 * Log the request details to screen/*from w ww.  j  a  v a  2s .  c  om*/
 * 
 * @param request
 * @param response
 * @param requestTime 
 */
private void logRequest(HttpServletRequest request, HttpServletResponse response, long requestTime) {
    SimpleDateFormat format = new SimpleDateFormat("dd/MMM/yyyy hh:mm:ss");

    StringBuilder builder = new StringBuilder(1024);
    builder.append(request.getRemoteAddr());
    builder.append(" - [");
    builder.append(format.format(new Date(requestTime)));
    builder.append("] \"");
    builder.append(request.getMethod());
    builder.append(' ');
    builder.append(request.getRequestURI());
    builder.append(' ');
    builder.append(request.getProtocol());
    builder.append(" - ");
    builder.append(response.getStatus());
    builder.append(" - ");

    String length = response.getHeader("Content-Length");
    if (length == null) {
        length = "0";
    }

    builder.append(length);

    System.out.println(builder.toString());
}

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From source file:org.frontcache.FrontCacheEngine.java

private void addResponseHeaders(WebResponse webResponse, RequestContext context) {
    HttpServletResponse servletResponse = context.getResponse();

    servletResponse.setStatus(webResponse.getStatusCode());

    servletResponse.addHeader(FCHeaders.X_FRONTCACHE_ID, fcHostId);
    servletResponse.addHeader(FCHeaders.X_FRONTCACHE_REQUEST_ID, context.getRequestId());

    if (webResponse.getHeaders() != null) {
        for (String name : webResponse.getHeaders().keySet()) {
            for (String value : webResponse.getHeaders().get(name)) {

                if (null == servletResponse.getHeader(name)) // if header already exist (e.g. in case of WebFilter) - do not duplicate
                    servletResponse.addHeader(name, value);
            }/*from  www  .  ja  v  a  2s  . c o  m*/
        }
    }
}

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From source file:org.smigo.log.LogHandler.java

public String getRequestDump(HttpServletRequest request, HttpServletResponse response, String separator) {
    StringBuilder s = new StringBuilder("####REQUEST ").append(request.getMethod()).append(" ")
            .append(request.getRequestURL()).append(separator);
    s.append("Auth type:").append(request.getAuthType()).append(separator);
    s.append("Principal:").append(request.getUserPrincipal()).append(separator);
    s.append(Log.create(request, response).toString()).append(separator);
    s.append("Headers:").append(separator);
    Enumeration<String> headerNames = request.getHeaderNames();
    while (headerNames.hasMoreElements()) {
        String headerName = headerNames.nextElement();
        s.append(headerName).append("=").append(request.getHeader(headerName)).append(separator);
    }//w  w  w. j  a  va  2s  .c o  m
    s.append(separator);
    s.append("####RESPONSE").append(separator);
    s.append("Status:").append(response.getStatus()).append(separator);
    s.append("Char encoding:").append(response.getCharacterEncoding()).append(separator);
    s.append("Locale:").append(response.getLocale()).append(separator);
    s.append("Content type:").append(response.getContentType()).append(separator);

    s.append("Headers:").append(separator);
    s.append(response.getHeaderNames().stream().map(rh -> rh + "=" + response.getHeader(rh))
            .collect(Collectors.joining(separator)));

    final Long start = (Long) request.getAttribute(RequestLogFilter.REQUEST_TIMER);
    if (start != null) {
        final long elapsedTime = System.nanoTime() - start;
        s.append(separator).append("####Request time elapsed:").append(elapsedTime);
        s.append("ns which is ").append(elapsedTime / 1000000).append("ms").append(separator);
    }
    return s.toString();
}

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From source file:com.groupon.odo.Proxy.java

/**
 * @param httpServletResponse//from   w  w  w .j  a  va 2  s .c o  m
 * @param outStream
 * @param jsonpCallback
 * @throws IOException
 */
private void writeResponseOutput(HttpServletResponse httpServletResponse, OutputStream outStream,
        String jsonpCallback) throws IOException {
    RequestInformation requestInfo = requestInformation.get();

    // check to see if this is chunked
    boolean chunked = false;
    if (httpServletResponse.containsHeader(HttpUtilities.STRING_TRANSFER_ENCODING) && httpServletResponse
            .getHeader(HttpUtilities.STRING_TRANSFER_ENCODING).compareTo("chunked") == 0) {
        httpServletResponse.setHeader(HttpUtilities.STRING_CONNECTION, HttpUtilities.STRING_CHUNKED);
        chunked = true;
    }

    // reattach JSONP if needed
    if (requestInfo.outputString != null && jsonpCallback != null) {
        requestInfo.outputString = jsonpCallback + "(" + requestInfo.outputString + ");";
    }

    // don't do this if we got a HTTP 304 since there is no data to send back
    if (httpServletResponse.getStatus() != HttpServletResponse.SC_NOT_MODIFIED) {
        logger.info("Chunked: {}, {}", chunked, httpServletResponse.getBufferSize());
        if (!chunked) {
            // change the content length header to the new length
            if (requestInfo.outputString != null) {
                httpServletResponse.setContentLength(requestInfo.outputString.getBytes().length);
            } else {
                httpServletResponse.setContentLength(((ByteArrayOutputStream) outStream).toByteArray().length);
            }
        }

        OutputStream outputStreamClientResponse = httpServletResponse.getOutputStream();

        if (requestInfo.outputString != null) {
            outputStreamClientResponse.write(requestInfo.outputString.getBytes());
        } else {
            outputStreamClientResponse.write(((ByteArrayOutputStream) outStream).toByteArray());
        }
        httpServletResponse.flushBuffer();

        logger.info("Done writing");
    }

    // outstr might still be null.. let's try to set it from outStream
    if (requestInfo.outputString == null) {
        try {
            requestInfo.outputString = outStream.toString();
        } catch (Exception e) {
            // can ignore any issues.. worst case outstr is still null
        }
    }
}

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From source file:com.mydomain.teavmfirstapp.Server.java

@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp)
        throws ServletException, FileNotFoundException, IOException {
    try {/*from ww w.ja  v  a 2s.  c  om*/
        Thread.sleep(500);
    } catch (InterruptedException e) {
        return;
    }
    String action = req.getHeader("action");
    if (action.equals("loadData") == true) {
        try {
            JSONObject json = (JSONObject) parser.parse(
                    new InputStreamReader(getClass().getClassLoader().getResourceAsStream("/com/DBjson.json")));
            json.writeJSONString(resp.getWriter());
        } catch (ParseException e) {
            e.printStackTrace();
        }
    } else if (action.equals("saveData") == true) {
        String JSON = req.getHeader("JSON");
        try {
            File myFile = new File(getClass().getClassLoader().getResource("/com/DBjson.json").getPath());
            FileOutputStream fileStream = new FileOutputStream(myFile, false);
            byte[] myBytes = JSON.getBytes();
            fileStream.write(myBytes);
            fileStream.close();
            System.out.println(
                    "? ?. ,  ? - ");
            try {
                JSONObject json = (JSONObject) parser.parse(new InputStreamReader(
                        getClass().getClassLoader().getResourceAsStream("/com/DBjson.json")));
                System.out.println(json.toJSONString());
            } catch (ParseException e) {
                e.printStackTrace();
            }
            resp.getHeader("NAME");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

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