Example usage for javax.servlet.http HttpServletResponse setHeader

Introduction

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

Prototype

public void setHeader(String name, String value);

Source Link

Document

Sets a response header with the given name and value.

Usage

From source file:de.otto.jsonhome.controller.JsonHomeController.java

@RequestMapping(produces = { "application/json" })
@ResponseBody/*from  w ww.j av  a2  s .  c om*/
public Map<String, ?> getAsApplicationJson(final HttpServletResponse response) {
    LOG.info("Returning json-home in application/json format.");
    // home document should be cached:
    response.setHeader("Cache-Control", "max-age=" + maxAge);
    response.setHeader("Vary", "Accept");
    return toRepresentation(jsonHomeSource.getJsonHome(), APPLICATION_JSON);
}

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From source file:com.nagarro.core.v2.controller.BaseController.java

protected void setTotalCountHeader(final HttpServletResponse response, final PaginationData paginationDto) {
    if (paginationDto != null) {
        response.setHeader(HEADER_TOTAL_COUNT, String.valueOf(paginationDto.getTotalNumberOfResults()));
    }//from  w w w .  j a v a 2 s  . co  m
}

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From source file:edu.cornell.library.scholars.webapp.controller.api.DistributeDataApiController.java

private void setCorsHeaders(HttpServletRequest req, HttpServletResponse resp) {
    log.debug("Setting CORS header for every request.");
    resp.setHeader("Access-Control-Allow-Origin", "*");
}

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From source file:controllers.BaseParamController.java

@RequestMapping("/getXls")
public void getXls(Map<String, Object> model, HttpServletResponse response) throws Exception {
    response.setContentType("application/octet-stream");
    response.setHeader("Content-Disposition", "attachment; filename=BaseParamMap.xls");
    baseParamService.getXls().write(response.getOutputStream());
}

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From source file:httpUtils.HttpUtils.java

/**
 * Parse the request headers, build the response, stream back file
 * @param request/*from  www .  j a  v a2  s .co  m*/
 * @param response
 * @param dataStream
 * @param fileLength
 * @param fileName
 * @param fileLastModified
 * @param contentType
 * @return
 */
private static HttpServletResponse getFileAsStream(HttpServletRequest request, HttpServletResponse response,
        InputStream dataStream, long fileLength, String fileName, long fileLastModified, String contentType) {
    if (dataStream == null) {
        response.setStatus(HttpServletResponse.SC_NOT_FOUND);
        return response;
    }

    if (StringUtils.isEmpty(fileName) || fileLastModified == 0L) {
        response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
        return response;
    }

    String ifNoneMatch = request.getHeader("If-None-Match");
    if (ifNoneMatch != null && matches(ifNoneMatch, fileName)) {
        response.setHeader("ETag", fileName);
        response.setStatus(HttpServletResponse.SC_NOT_MODIFIED);
        return response;
    }

    long ifModifiedSince = request.getDateHeader("If-Modified-Since");
    if (ifNoneMatch == null && ifModifiedSince != -1 && ifModifiedSince + 1000 > fileLastModified) {
        response.setHeader("ETag", fileName);
        response.setStatus(HttpServletResponse.SC_NOT_MODIFIED);
        return response;
    }

    String ifMatch = request.getHeader("If-Match");
    if (ifMatch != null && !matches(ifMatch, fileName)) {
        response.setStatus(HttpServletResponse.SC_PRECONDITION_FAILED);
        return response;
    }

    long ifUnmodifiedSince = request.getDateHeader("If-Unmodified-Since");
    if (ifUnmodifiedSince != -1 && ifUnmodifiedSince + 1000 <= fileLastModified) {
        response.setStatus(HttpServletResponse.SC_PRECONDITION_FAILED);
        return response;
    }

    Range full = new Range(0, fileLength - 1, fileLength);
    List<Range> ranges = new ArrayList<Range>();
    String range = request.getHeader("Range");
    if (range != null) {
        if (!range.matches("^bytes=\\d*-\\d*(,\\d*-\\d*)*$")) {
            response.setHeader("Content-Range", "bytes */" + fileLength);
            response.setStatus(HttpServletResponse.SC_REQUESTED_RANGE_NOT_SATISFIABLE);
            return response;
        }

        String ifRange = request.getHeader("If-Range");
        if (ifRange != null && !ifRange.equals(fileName)) {
            try {
                long ifRangeTime = request.getDateHeader("If-Range");
                if (ifRangeTime != -1) {
                    ranges.add(full);
                }
            } catch (IllegalArgumentException ignore) {
                ranges.add(full);
            }
        }

        if (ranges.isEmpty()) {
            for (String part : range.substring(6).split(",")) {
                // Assuming a file with length of 100, the following
                // examples returns bytes at:
                // 50-80 (50 to 80), 40- (40 to length=100), -20
                // (length-20=80 to length=100).
                long start = sublong(part, 0, part.indexOf("-"));
                long end = sublong(part, part.indexOf("-") + 1, part.length());

                if (start == -1) {
                    start = fileLength - end;
                    end = fileLength - 1;
                } else if (end == -1 || end > fileLength - 1) {
                    end = fileLength - 1;
                }

                // Check if Range is syntactically valid. If not, then
                // return 416.
                if (start > end) {
                    response.setHeader("Content-Range", "bytes */" + fileLength); // Required
                    // in
                    // 416.
                    response.setStatus(HttpServletResponse.SC_REQUESTED_RANGE_NOT_SATISFIABLE);
                    return response;
                }

                // Add range.
                ranges.add(new Range(start, end, fileLength));
            }
        }
    }

    // Get content type by file name and set content disposition.
    String disposition = "inline";

    // If content type is unknown, then set the default value.
    // For all content types, see:
    // http://www.w3schools.com/media/media_mimeref.asp
    // To add new content types, add new mime-mapping entry in web.xml.
    if (contentType == null) {
        contentType = "application/octet-stream";
    } else if (!contentType.startsWith("image")) {
        // Else, expect for images, determine content disposition. If
        // content type is supported by
        // the browser, then set to inline, else attachment which will pop a
        // 'save as' dialogue.
        String accept = request.getHeader("Accept");
        disposition = accept != null && accepts(accept, contentType) ? "inline" : "attachment";
    }

    // Initialize response.
    response.reset();
    response.setBufferSize(HttpUtils.DEFAULT_BUFFER_SIZE);
    response.setHeader("Content-Disposition", disposition + ";filename=\"" + fileName + "\"");
    response.setHeader("Accept-Ranges", "bytes");
    response.setHeader("ETag", fileName);
    response.setDateHeader("Last-Modified", fileLastModified);
    response.setDateHeader("Expires", System.currentTimeMillis() + HttpUtils.DEFAULT_EXPIRE_TIME);

    // Send requested file (part(s)) to client
    // ------------------------------------------------

    // Prepare streams.
    InputStream input = null;
    OutputStream output = null;

    try {
        // Open streams.
        input = new BufferedInputStream(dataStream);
        output = response.getOutputStream();

        if (ranges.isEmpty() || ranges.get(0) == full) {

            // Return full file.
            Range r = full;
            response.setContentType(contentType);
            response.setHeader("Content-Range", "bytes " + r.start + "-" + r.end + "/" + r.total);
            response.setHeader("Content-Length", String.valueOf(r.length));
            copy(input, output, fileLength, r.start, r.length);

        } else if (ranges.size() == 1) {

            // Return single part of file.
            Range r = ranges.get(0);
            response.setContentType(contentType);
            response.setHeader("Content-Range", "bytes " + r.start + "-" + r.end + "/" + r.total);
            response.setHeader("Content-Length", String.valueOf(r.length));
            response.setStatus(HttpServletResponse.SC_PARTIAL_CONTENT); // 206.

            // Copy single part range.
            copy(input, output, fileLength, r.start, r.length);

        } else {

            // Return multiple parts of file.
            response.setContentType("multipart/byteranges; boundary=" + HttpUtils.MULTIPART_BOUNDARY);
            response.setStatus(HttpServletResponse.SC_PARTIAL_CONTENT); // 206.

            // Cast back to ServletOutputStream to get the easy println
            // methods.
            ServletOutputStream sos = (ServletOutputStream) output;

            // Copy multi part range.
            for (Range r : ranges) {
                // Add multipart boundary and header fields for every range.
                sos.println();
                sos.println("--" + HttpUtils.MULTIPART_BOUNDARY);
                sos.println("Content-Type: " + contentType);
                sos.println("Content-Range: bytes " + r.start + "-" + r.end + "/" + r.total);

                // Copy single part range of multi part range.
                copy(input, output, fileLength, r.start, r.length);
            }

            // End with multipart boundary.
            sos.println();
            sos.println("--" + HttpUtils.MULTIPART_BOUNDARY + "--");
        }
    } catch (Exception e) {
        log.error("get file as stream failed", e);
    } finally {
        // Gently close streams.
        close(output);
        close(input);
        close(dataStream);
    }
    return response;
}

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From source file:org.jasig.web.filter.SimpleCorsFilter.java

/**
 * Sets the headers to support CORS /*  w  w w  . jav  a 2  s .  com*/
 * @see javax.servlet.Filter#doFilter(javax.servlet.ServletRequest, javax.servlet.ServletResponse, javax.servlet.FilterChain)
 */
@Override
public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain)
        throws IOException, ServletException {
    HttpServletResponse response = (HttpServletResponse) res;
    response.setHeader("Access-Control-Allow-Origin", allowOrigin);
    response.setHeader("Access-Control-Allow-Methods", allowMethod);
    response.setHeader("Access-Control-Max-Age", maxAge);
    response.setHeader("Access-Control-Allow-Headers", allowHeaders);
    chain.doFilter(req, res);
}

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From source file:com.lbb.controller.FileUploadController.java

@RequestMapping("download.html")
public void download(String fileName, HttpServletResponse response) throws IOException {
    OutputStream os = response.getOutputStream();
    try {/*from  ww w  .  j  a  v a  2s  .com*/
        response.reset();
        response.setHeader("Content-Disposition", "attachment; filename=" + fileName);
        response.setContentType("image/jpeg; charset=utf-8");
        os.write(FileUtils.readFileToByteArray(FileUpload.getFile(fileName)));
        os.flush();
    } finally {
        if (os != null) {
            os.close();
        }
    }
}

---

From source file:de.otto.jsonhome.controller.JsonHomeController.java

@RequestMapping(produces = { "application/json-home" })
@ResponseBody//w  w w  . j ava2s  .c  o m
public Map<String, ?> getAsApplicationJsonHome(final HttpServletResponse response) {
    LOG.info("Returning json-home in application/json-home format.");
    // home document should be cached:
    response.setHeader("Cache-Control", "max-age=" + maxAge);
    response.setHeader("Vary", "Accept");
    return toRepresentation(jsonHomeSource.getJsonHome(), APPLICATION_JSONHOME);
}

---

From source file:org.sventon.web.ctrl.RSSController.java

private void addResponseHeaders(HttpServletResponse response) {
    response.setContentType(mimeType);//from ww w  .  j av a 2 s  .c  om
    response.setHeader("Cache-Control", "no-cache");
}

---

From source file:com.demandware.vulnapp.challenge.impl.MD5Challenge.java

public Object handleChallengeRequest(DIVAServletRequestWrapper req) {
    String download = req.getParameter(DOWNLOAD_PARAM);
    if (!StringUtils.isBlank(download)) {
        HttpServletResponse response = req.getResponse();
        response.setContentType("application/octet-stream");
        response.setHeader("Content-Disposition", "attachment;filename=" + this.b64WarLocation.getName());

        try (FileInputStream fileIn = new FileInputStream(this.b64WarLocation);
                ServletOutputStream out = response.getOutputStream()) {

            IOUtils.copy(fileIn, out);/*from w  w w. ja v a2 s. c  o m*/

        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    return null;
}

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