Example usage for javax.servlet.http HttpServletResponse setContentLength

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

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Introduction

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

Prototype

public void setContentLength(int len);

Source Link

Document

Sets the length of the content body in the response In HTTP servlets, this method sets the HTTP Content-Length header.

Usage

From source file:ru.mystamps.web.controller.ImageController.java

@GetMapping(Url.GET_IMAGE_PAGE)
public void getImage(@PathVariable("id") Integer imageId, HttpServletResponse response) throws IOException {

    if (imageId == null) {
        response.sendError(HttpServletResponse.SC_NOT_FOUND);
        return;//from  w ww .j  a  v  a  2 s.  c o  m
    }

    ImageDto image = imageService.get(imageId);
    if (image == null) {
        response.sendError(HttpServletResponse.SC_NOT_FOUND);
        return;
    }

    // TODO: set content disposition
    response.setContentType("image/" + image.getType().toLowerCase());
    response.setContentLength(image.getData().length);

    response.getOutputStream().write(image.getData());
}

From source file:com.all.tracker.controllers.VersionController.java

private void setHeaders(HttpServletResponse response, Version version) throws IOException {
    File updateFile = version.getUpdateFile();
    response.setStatus(HttpServletResponse.SC_OK);
    response.setContentType(APPLICATION_OCTET_STREAM);
    response.setContentLength((int) updateFile.length());
    response.setHeader(CONTENT_DISPOSITION, ATTACHMENT_FILENAME + updateFile.getName());
    response.setHeader(CONTENT_MD5, version.getMd5Checksum());
}

From source file:com.novartis.pcs.ontology.rest.servlet.GraphServlet.java

private void graph(String termRefId, String mediaType, String orientation, String callback,
        HttpServletResponse response) {
    GraphOrientation graphOrientation = GraphOrientation.TB;

    if (orientation != null) {
        try {//from ww  w .  j  a va2 s.com
            graphOrientation = GraphOrientation.valueOf(orientation);
        } catch (Exception e) {
            response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
            response.setContentLength(0);
            return;
        }
    }

    if (mediaType == null) {
        response.setStatus(HttpServletResponse.SC_UNSUPPORTED_MEDIA_TYPE);
        response.setContentLength(0);
        return;
    }

    try {
        String content = graphService.createGraph(termRefId, graphOrientation);
        // JSONP support
        if (callback != null) {
            StringBuilder builder = new StringBuilder(callback.length() + content.length() + 5);
            builder.append(callback);
            builder.append("(\"");
            builder.append(StringEscapeUtils.escapeJavaScript(content));
            builder.append("\");");
            content = builder.toString();
            mediaType = "application/javascript";
        }

        byte[] contentBytes = content.getBytes("UTF-8");

        response.setStatus(HttpServletResponse.SC_OK);
        response.setHeader("Access-Control-Allow-Origin", "*");
        response.setContentType(mediaType + ";charset=utf-8");
        response.setHeader("Cache-Control", "public, max-age=0");
        response.getOutputStream().write(contentBytes);
    } catch (EntityNotFoundException e) {
        log("Failed to find term with reference id: " + termRefId, e);
        response.setStatus(HttpServletResponse.SC_NOT_FOUND);
        response.setContentLength(0);
    } catch (Exception e) {
        log("Failed to create graph for term " + termRefId, e);
        response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
        response.setContentLength(0);
    }
}

From source file:fr.putnami.pwt.plugin.spring.file.server.controller.FileTransfertController.java

@RequestMapping(value = "/file/download/{fileId}", method = RequestMethod.GET)
public void downloadFile(@PathVariable String fileId, HttpServletRequest request,
        HttpServletResponse response) {
    try {/*w  ww .  ja  v a 2  s  .c  o  m*/
        FileDto fileBean = this.store.getFileBean(fileId);
        if (fileBean == null) {
            throw new RuntimeException("Aucun fichier trouver " + fileId);
        }
        InputStream is = this.store.read(fileId);
        response.setContentType(fileBean.getMime());
        response.setHeader("Content-Disposition", "attachment; filename=\"" + fileBean.getName() + "\"");
        response.setContentLength((int) fileBean.getContentLength());
        IOUtils.copy(is, response.getOutputStream());
        response.flushBuffer();
    } catch (IOException ex) {
        throw new RuntimeException("IOError writing file to output stream", ex);
    }
}

From source file:com.threewks.thundr.view.jsonp.JsonpViewResolver.java

@Override
public void resolve(HttpServletRequest req, HttpServletResponse resp, JsonpView viewResult) {
    Object output = viewResult.getOutput();
    try {/*from  w  w w . java2 s  .  c o m*/
        Gson create = gsonBuilder.create();
        JsonElement jsonElement = Cast.as(output, JsonElement.class);
        String json = jsonElement == null ? create.toJson(output) : create.toJson(jsonElement);
        String jsonp = wrapJsonInCallback(req, json);

        String encoding = viewResult.getCharacterEncoding();
        resp.setContentLength(jsonp.getBytes(encoding).length);
        BaseView.applyToResponse(viewResult, resp);
        resp.getWriter().write(jsonp);
    } catch (Exception e) {
        throw new ViewResolutionException(e, "Failed to generate JSONP output for object '%s': %s",
                output.toString(), e.getMessage());
    }
}

From source file:com.jada.admin.AdminLookupDispatchAction.java

protected void streamWebService(HttpServletResponse response, String data) throws IOException {
    response.setContentType("text/html; charset=UTF-8");
    response.setContentLength(data.getBytes(Constants.SYSTEM_ENCODING).length);
    OutputStream outputStream = response.getOutputStream();
    outputStream.write(data.getBytes(Constants.SYSTEM_ENCODING));
    outputStream.flush();/* w  w w.ja  va  2  s  .  c  o m*/
}

From source file:com.feilong.servlet.http.ResponseDownloadUtil.java

/**
 *  download response header.// ww w  .j  a v  a 2  s.c  o  m
 *
 * @param saveFileName
 *            the save file name
 * @param contentLength
 *            the content length
 * @param contentType
 *            ?,;,? <code>null</code>,,?? {@link #resolverContentType(String, String)}
 * @param contentDisposition
 *            ?,;,? <code>null</code>,,?? {@link #resolverContentDisposition(String, String)}
 * @param response
 *            the response
 */
private static void setDownloadResponseHeader(String saveFileName, Number contentLength, String contentType,
        String contentDisposition, HttpServletResponse response) {

    //response
    //getResponsegetWriter()??,??,?response.resetresetBuffer.
    //getOutputStream() has already been called for this response
    //jsp??,response.getOutputStream()??:java.lang.IllegalStateException:getOutputStream() has already been called for this response,Exception
    response.reset();

    //*************************************************************************
    response.addHeader(HttpHeaders.CONTENT_DISPOSITION,
            resolverContentDisposition(saveFileName, contentDisposition));

    // ===================== Default MIME Type Mappings =================== -->
    //??,?,????.????,???,
    response.setContentType(resolverContentType(saveFileName, contentType));

    if (isNotNullOrEmpty(contentLength)) {
        response.setContentLength(contentLength.intValue());
    }

    //************************about buffer***********************************************************

    //?:??,?,.
    //??,?:
    //JSP??
    //
    //JSPout.flush()response.flushbuffer()

    //:?,?,???,???.
    //XXX ?? response.setBufferSize(10240); ^_^

    //see org.apache.commons.io.IOUtils.copyLarge(InputStream, OutputStream) javadoc
    //This method buffers the input internally, so there is no need to use a BufferedInputStream
}

From source file:io.manasobi.license.LicenseController.java

@RequestMapping(value = "/download", method = RequestMethod.POST)
@ResponseBody/*from   w  ww.j a v  a 2 s.com*/
public void download(String genKey, HttpServletResponse response) {

    LicenseDetails licenseDetails = licenseService.findLiceseDetails(genKey);

    String licenseKey = licenseDetails.getKey();
    String licenseFileName = licenseDetails.getLicense().getSiteName() + ".cer";

    StringReader reader = new StringReader(licenseKey);
    OutputStream outStream = null;

    try {

        response.setContentLength(licenseKey.length());
        response.setContentType("application/download; utf-8");

        // response header
        String headerKey = "Content-Disposition";
        String headerValue = String.format("attachment; filename=\"%s\"", licenseFileName);

        response.setHeader(headerKey, headerValue);

        // Write response
        outStream = response.getOutputStream();

        IOUtils.copy(reader, outStream);

    } catch (Exception e) {

        e.printStackTrace();

    } finally {

        IOUtils.closeQuietly(reader);
        IOUtils.closeQuietly(outStream);
    }

}

From source file:ee.pri.rl.blog.web.servlet.FileDownloadServlet.java

private void sendFile(String path, String calculatedTag, File directory, HttpServletResponse resp) {
    File file = new File(directory, path);

    String mimeType = getServletContext().getMimeType(path);
    if (mimeType == null) {
        mimeType = "application/octet-stream";
    }//  www .  j a v a2  s  .c  om

    resp.setHeader("ETag", calculatedTag);
    resp.setDateHeader("Date", System.currentTimeMillis());
    resp.setContentType(mimeType);
    resp.setContentLength((int) file.length());
    long liveTime = 3600 * 24 * 30;
    resp.setDateHeader("Expires", System.currentTimeMillis() + liveTime * 1000);
    resp.setHeader("Cache-Control", "public, max-age=" + liveTime);

    try {
        DataInputStream input = new DataInputStream(new FileInputStream(file));
        try {
            IOUtils.copy(input, resp.getOutputStream());
            resp.getOutputStream().flush();
            resp.getOutputStream().close();
        } catch (IOException e) {
            log.warn("Sending " + file + " failed", e);
            resp.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
        }
        if (input != null) {
            input.close();
        }
    } catch (IOException e) {
        log.warn("Sending " + file + " failed", e);
        try {
            resp.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
        } catch (IOException e1) {
            log.warn("Sending response for " + file + " failed");
        }
    }
}