Example usage for javax.servlet.http HttpServletResponse flushBuffer

List of usage examples for javax.servlet.http HttpServletResponse flushBuffer

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Introduction

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

Prototype

public void flushBuffer() throws IOException;

Source Link

Document

Forces any content in the buffer to be written to the client.

Usage

From source file:net.lightbody.bmp.proxy.jetty.jetty.servlet.Default.java

public void handleOptions(HttpServletRequest request, HttpServletResponse response) throws IOException {
    // Handle OPTIONS request for entire server
    // 9.2//from  w ww . j  a va  2s .  c o  m
    response.setIntHeader(HttpFields.__ContentLength, 0);
    response.setHeader(HttpFields.__Allow, _AllowString);
    response.flushBuffer();
}

From source file:de.undercouch.gradle.tasks.download.ETagTest.java

@Override
protected Handler[] makeHandlers() throws IOException {
    ContextHandler lastModifiedHandler = new ContextHandler("/" + ETAG) {
        @Override//from  w  w w  .  j a va 2 s  . c  o m
        public void handle(String target, HttpServletRequest request, HttpServletResponse response,
                int dispatch) throws IOException, ServletException {
            String ifNoneMatch = request.getHeader("If-None-Match");
            if (etag != null && etag.equals(ifNoneMatch)) {
                response.setStatus(304);
                response.flushBuffer();
            } else {
                response.setStatus(200);
                if (etag != null) {
                    response.setHeader("ETag", etag);
                }
                PrintWriter rw = response.getWriter();
                rw.write("etag: " + etag);
                rw.close();
            }
        }
    };
    return new Handler[] { lastModifiedHandler };
}

From source file:nl.strohalm.cyclos.servlets.ImageByNameServlet.java

/**
 * Write the image file to the response/*from w w  w  .ja  v a 2 s  .c  o  m*/
 */
private void write(final HttpServletRequest request, final HttpServletResponse response, final File file,
        final ImageType type) throws IOException {
    final long ifModifiedSince = request.getDateHeader("If-Modified-Since");
    if (ifModifiedSince > 0 && file.lastModified() <= ifModifiedSince) {
        // The contents have not changed
        response.setStatus(HttpServletResponse.SC_NOT_MODIFIED);
        return;
    }
    // The contents are modified, or not in browser's cache. Render it
    if (type != null) {
        response.setContentType(type.getContentType());
    }
    responseHelper.writeFile(response, file);
    response.flushBuffer();
}

From source file:org.fao.geonet.api.userfeedback.UserFeedbackAPI.java

/**
 * Prints the output message.//from  ww  w  .  j av a2s.co  m
 *
 * @param response the response
 * @param code the code
 * @param message the message
 * @throws IOException Signals that an I/O exception has occurred.
 */
private void printOutputMessage(final HttpServletResponse response, final HttpStatus code, final String message)
        throws IOException {
    response.setStatus(code.value());
    final PrintWriter out = response.getWriter();
    response.setContentType("text/html");
    out.println(message);
    response.flushBuffer();
}

From source file:it.polimi.diceH2020.launcher.controller.rest.DownloadsController.java

private void respondWithZipFile(@NotNull Map<String, String> files, @NotNull HttpServletResponse response) {
    File zipPath = null;/*from  w  w w.  j a  v  a2s . co  m*/
    try {
        zipPath = fileUtility.createTempZip(files);
    } catch (IOException e) {
        logger.error("Problem creating zip file", e);
    }
    if (zipPath != null) {
        response.setContentType("application/zip");
        response.addHeader("Content-Disposition", "attachment; filename=\"test.zip\"");
        try (BufferedInputStream is = new BufferedInputStream(new FileInputStream(zipPath))) {
            IOUtils.copy(is, response.getOutputStream());
            response.flushBuffer();
        } catch (FileNotFoundException e) {
            logger.error("Zip file not found", e);
        } catch (IOException e) {
            logger.error("Cannot return zip file as an HTTP response", e);
        }
    }
}

From source file:org.mitre.mpf.mvc.controller.MarkupController.java

@RequestMapping(value = "/markup/content", method = RequestMethod.GET, produces = MediaType.IMAGE_JPEG_VALUE)
@ResponseBody//from   w  ww.j  a va  2 s  .  c  o  m
public void serve(HttpServletResponse response, @RequestParam(value = "id", required = true) long id)
        throws IOException, URISyntaxException {
    MarkupResult mediaMarkupResult = mpfService.getMarkupResult(id);
    if (mediaMarkupResult != null) {
        //only on image!
        if (!StringUtils.endsWithIgnoreCase(mediaMarkupResult.getMarkupUri(), "avi")) {
            String nonUrlPath = mediaMarkupResult.getMarkupUri().replace("file:", "");
            File f = new File(nonUrlPath);
            if (f.canRead()) {
                FileUtils.copyFile(f, response.getOutputStream());
                response.flushBuffer();
            }
        }
    }
    //TODO need a no image available if final nested if is not met
}

From source file:edu.dfci.cccb.mev.controllers.HeatmapController.java

@RequestMapping(value = "/{id}/download", method = GET)
@ResponseStatus(OK)/*  w  w w.j a  v a2  s  .  co  m*/
public void download(@PathVariable("id") String id, HttpServletResponse response)
        throws HeatmapNotFoundException, IOException, AnnotationNotFoundException {
    response.setContentType("text/plain");
    response.setHeader("Content-Disposition", "attachment;filename=" + id + ".txt");
    get(id).toStream(response.getOutputStream());
    response.flushBuffer();
}

From source file:com.almende.eve.transport.http.DebugServlet.java

@Override
protected void doGet(final HttpServletRequest req, final HttpServletResponse resp)
        throws ServletException, IOException {

    // If this is a handshake request, handle it.
    if (handleHandShake(req, resp)) {
        return;/*from w w w  . j  a  va2 s  .  c o  m*/
    }

    final String url = req.getRequestURI();
    final String id = getId(url);
    if (id == null || id.equals("") || id.equals(myUrl.toASCIIString())) {
        resp.sendError(HttpServletResponse.SC_BAD_REQUEST, "Couldn't parse URL, missing 'id'");
        resp.flushBuffer();
        return;
    }
    if (myUrl != null) {
        final HttpTransport transport = HttpService.get(myUrl, id);
        if (transport != null) {
            // get the resource name from the end of the url

            String resource = getResource(url);
            if (resource == null || resource.equals("")) {
                if (!url.endsWith("/") && !resp.isCommitted()) {
                    final String redirect = url + "/";
                    resp.sendRedirect(redirect);
                    return;
                }
                resource = "index.html";
            }
            final String extension = resource.substring(resource.lastIndexOf('.') + 1);
            // load the resource
            final String mimetype = StreamingUtil.getMimeType(extension);

            final String filename = RESOURCES + resource;
            final InputStream is = this.getClass().getResourceAsStream(filename);
            if (is != null) {
                StreamingUtil.streamBinaryData(is, mimetype, resp);
            } else {
                throw new ServletException(
                        "Resource '" + resource + "' not found. (filename:'" + filename + "')");
            }
            resp.flushBuffer();
        } else {
            resp.setContentType("text/plain");
            resp.getWriter().println("Agent:" + id + " is unknown!");
            resp.getWriter().close();
            resp.flushBuffer();
        }
    } else {
        resp.setContentType("text/plain");
        resp.getWriter().println("You've found the servlet for agent:" + id);
        resp.getWriter().close();
        resp.flushBuffer();
    }
}

From source file:eea.eprtr.cms.controller.FileOpsController.java

/**
 * Download a file.// www  .  j a va2  s  .c om
 * Extension is stripped by Spring unless reconfigured.
 * @see <a href="http://docs.spring.io/spring-framework/docs/current/spring-framework-reference/html/mvc.html#mvc-ann-requestmapping-suffix-pattern-match">Suffix Pattern Matching</a>
 * @see <a href="http://docs.spring.io/spring-framework/docs/current/spring-framework-reference/html/mvc.html#mvc-config-path-matching">21.16.11 Path Matching</a>
 */
@RequestMapping(value = "/docs/{file_name}", method = RequestMethod.GET)
public void downloadFile(@PathVariable("file_name") String fileId, HttpServletResponse response)
        throws IOException {

    long fileSize = 0;
    InputStream iStream = null;
    try {
        fileSize = storageService.getSizeById(fileId, "docs");
        iStream = storageService.getById(fileId, "docs");
    } catch (Exception e) {
        throw new java.io.FileNotFoundException(fileId);
    }
    response.setContentType("application/octet-stream");
    response.setHeader("Content-Length", Long.toString(fileSize));
    response.setHeader("Content-Disposition", "attachment; filename=" + fileId);

    org.apache.commons.io.IOUtils.copy(iStream, response.getOutputStream());
    response.flushBuffer();
    iStream.close();
}

From source file:it.polimi.diceH2020.launcher.controller.DownloadsController.java

private void respondWithZipFile(@NotNull Map<String, String> files, @NotNull HttpServletResponse response) {
    File zipPath = null;//ww w.j av  a 2s.  c o  m
    try {
        zipPath = fileUtility.createTempZip(files);
    } catch (IOException e) {
        logger.error("Problem creating zip file", e);
    }
    if (zipPath != null) {
        response.setContentType("application/zip");
        response.addHeader("Content-Disposition", "attachment; filename=\"test.zip\"");
        try {
            InputStream is = new FileInputStream(zipPath);
            IOUtils.copy(is, response.getOutputStream());
            response.flushBuffer();
        } catch (FileNotFoundException e) {
            logger.error("Zip file not found", e);
        } catch (IOException e) {
            logger.error("Cannot return zip file as an HTTP response", e);
        }
    }
}