Example usage for javax.servlet.http HttpServletResponse setContentLength

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:fr.ippon.wip.http.reponse.Response.java

/**
 * Print the response content to and HttpServletResponse
 * /*from w  ww . jav  a 2  s .  c o m*/
 * Set appropriate Content-Type, Charset and HTTP status code. Force
 * Content-Disposition to "attachment". Can handle binary content.
 * 
 * @param httpServletResponse
 * @throws IOException
 */
public void sendResponse(HttpServletResponse httpServletResponse) throws IOException {
    httpServletResponse.setContentType(mimeType);
    httpServletResponse.setCharacterEncoding(charset.name());
    httpServletResponse.setStatus(responseCode);
    if (isBinary()) {
        httpServletResponse.setHeader("Content-Disposition", "attachment; filename=\"" + getFileName() + "\"");
        OutputStream os = httpServletResponse.getOutputStream();
        IOUtils.copy(new ByteArrayInputStream(content), os);
        os.close();
    } else {
        String textContent = new String(content, charset);
        httpServletResponse.setContentLength(textContent.length());
        PrintWriter writer = httpServletResponse.getWriter();
        writer.print(textContent);
    }
}

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From source file:gumga.framework.presentation.api.AbstractReportAPI.java

public void generateAndExportHTMLReport(String reportName, String destFile, List data,
        Map<String, Object> params, HttpServletRequest request, HttpServletResponse response)
        throws JRException, IOException {
    InputStream is = getResourceAsInputStream(request, reportName);
    setContentType(response, reportName, ReportType.HTML);
    reportService.exportReportToHtmlFile(is, data, params, destFile);

    //Set the output content
    InputStream generatedIs = request.getServletContext().getResourceAsStream(destFile);
    ByteArrayOutputStream buffer = new ByteArrayOutputStream();
    int nRead;//from  w  ww . j  av a  2  s.c om
    byte[] bytes = new byte[16384];

    while ((nRead = generatedIs.read(bytes, 0, bytes.length)) != -1) {
        buffer.write(bytes, 0, nRead);
    }

    buffer.flush();
    bytes = buffer.toByteArray();
    response.setContentLength(bytes.length);
    response.getOutputStream().write(bytes, 0, bytes.length);
}

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From source file:net.sourceforge.fenixedu.presentationTier.Action.publico.FileDownload.java

@Override
public ActionForward execute(final ActionMapping mapping, final ActionForm actionForm,
        final HttpServletRequest request, final HttpServletResponse response) throws Exception {
    final String oid = request.getParameter("oid");
    final File file = FenixFramework.getDomainObject(oid);
    if (file == null) {
        response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
        response.getWriter().write(HttpStatus.getStatusText(HttpStatus.SC_BAD_REQUEST));
        response.getWriter().close();//from ww  w  . j  av a 2  s.c o  m
    } else {
        final Person person = AccessControl.getPerson();
        if (!file.isPrivate() || file.isPersonAllowedToAccess(person)) {
            response.setContentType(file.getContentType());
            response.addHeader("Content-Disposition", "attachment; filename=" + file.getFilename());
            response.setContentLength(file.getSize().intValue());
            final DataOutputStream dos = new DataOutputStream(response.getOutputStream());
            dos.write(file.getContents());
            dos.close();
        } else if (file.isPrivate() && person == null) {
            response.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
            response.getWriter().write(HttpStatus.getStatusText(HttpStatus.SC_UNAUTHORIZED));
            response.getWriter().close();
        } else {
            response.setStatus(HttpServletResponse.SC_FORBIDDEN);
            response.getWriter().write(HttpStatus.getStatusText(HttpStatus.SC_FORBIDDEN));
            response.getWriter().close();
        }
    }
    return null;
}

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From source file:com.hbs.common.josn.JSONUtil.java

public static void writeJSONToResponse(HttpServletResponse response, String encoding, boolean wrapWithComments,
        String serializedJSON, boolean smd, boolean gzip, String contentType) throws IOException {
    String json = serializedJSON == null ? "" : serializedJSON;
    if (wrapWithComments) {
        StringBuilder sb = new StringBuilder("/* ");
        sb.append(json);//from   w  w  w .j a v  a2  s .  co  m
        sb.append(" */");
        json = sb.toString();
    }
    if (log.isDebugEnabled()) {
        log.debug("[JSON]" + json);
    }

    if (contentType == null) {
        contentType = "application/json";
    }
    response.setContentType((smd ? "application/json-rpc;charset=" : contentType + ";charset=") + encoding);
    if (gzip) {
        response.addHeader("Content-Encoding", "gzip");
        GZIPOutputStream out = null;
        InputStream in = null;
        try {
            out = new GZIPOutputStream(response.getOutputStream());
            in = new ByteArrayInputStream(json.getBytes());
            byte[] buf = new byte[1024];
            int len;
            while ((len = in.read(buf)) > 0) {
                out.write(buf, 0, len);
            }
        } finally {
            if (in != null)
                in.close();
            if (out != null) {
                out.finish();
                out.close();
            }
        }

    } else {
        response.setContentLength(json.getBytes(encoding).length);
        PrintWriter out = response.getWriter();
        out.print(json);
    }
}

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

@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    String pathInfo = StringUtils.trimToNull(request.getPathInfo());
    String orientation = StringUtils.trimToNull(request.getParameter("orientation"));
    String callback = StringUtils.trimToNull(request.getParameter("callback"));
    String mediaType = getExpectedMediaType(request);

    if (pathInfo != null && pathInfo.length() > 1) {
        String termRefId = pathInfo.substring(1);
        graph(termRefId, mediaType, orientation, callback, response);
    } else {/*w  ww .  ja v a  2  s. c o  m*/
        response.setStatus(HttpServletResponse.SC_NOT_FOUND);
        response.setContentLength(0);
    }
}

---

From source file:cats.twitter.webapp.controller.module.ApiController.java

@Transactional
@RequestMapping(value = "/api-chain", method = RequestMethod.GET)
public void apiChain(@RequestHeader("token") String token, HttpServletResponse response) {
    Optional<Request> req = reqRepository.findOneByToken(token);
    if (!req.isPresent()) {
        throw new IllegalAccessError("Please verify your token!");
    }/* w ww  . j  a va2s .c  om*/
    String result = null;
    if (req.get().isChained() && req.get().getPreviousRequest() != null) {
        result = req.get().getPreviousRequest().getResult(Result.TypeRes.FILE).getResult();
        try {

            File downloadFile = new File(result);
            FileInputStream inputStream = new FileInputStream(downloadFile);

            // set content attributes for the response
            response.setContentType("text/plain");
            response.setContentLength((int) downloadFile.length());

            // get output stream of the response
            OutputStream outStream = response.getOutputStream();

            byte[] buffer = new byte[BUFFER_SIZE];
            int bytesRead = -1;

            // write bytes read from the input stream into the output stream
            while ((bytesRead = inputStream.read(buffer)) != -1) {
                outStream.write(buffer, 0, bytesRead);
            }

            inputStream.close();
            outStream.close();
        } catch (Exception e) {
            Result res = new Result();
            res.setDate(new Date());
            res.setResult(e.getMessage());
            res.setType(Result.TypeRes.ERROR);
            req.get().addResult(res);
            e.printStackTrace();
        }
    }
}

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From source file:ba.nwt.ministarstvo.server.fileUpload.FileUploadServlet.java

private void sendResponse(HttpServletResponse response, FormResponse details) {
    // GWT provides very poor support for handling servlet response in the
    // FormPanel and associated classes. Basically, it returns only the body
    // part and nothing else. So, the only way, we can indicate 
    // an error is to embed the message in the HTML. 

    try {//  w  w w. ja  v a  2  s .  co  m
        response.setStatus(HttpServletResponse.SC_OK);
        response.setContentType("text/html");

        String msg = (details.getReason() == null ? "" : details.getReason());
        response.setContentLength(msg.length());
        response.getWriter().print(msg);
        response.getWriter().flush();
    } catch (Exception e) {
        e.printStackTrace();
    }
}

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From source file:de.kp.ames.web.core.service.ServiceImpl.java

public void sendFileResponse(FileUtil file, HttpServletResponse response) throws IOException {

    if (file == null)
        return;//  www .j  av a2  s .  co  m

    // finally set http status
    response.setStatus(HttpServletResponse.SC_OK);

    response.setContentType(file.getMimetype());
    response.setContentLength(file.getLength());

    OutputStream os = response.getOutputStream();

    os.write(file.getFile());
    os.close();

}

---

From source file:net.sourceforge.fenixedu.presentationTier.Action.internationalRelatOffice.candidacy.erasmus.ErasmusIndividualCandidacyProcessDA.java

public ActionForward retrieveLearningAgreement(ActionMapping mapping, ActionForm form,
        HttpServletRequest request, HttpServletResponse response) throws Exception {
    MobilityIndividualApplicationProcess process = getProcess(request);

    final LearningAgreementDocument document = new LearningAgreementDocument(process);
    byte[] data = ReportsUtils.exportMultipleToPdfAsByteArray(document);

    response.setContentLength(data.length);
    response.setContentType("application/pdf");
    response.addHeader("Content-Disposition", "attachment; filename=" + document.getReportFileName() + ".pdf");

    final ServletOutputStream writer = response.getOutputStream();
    writer.write(data);/* w  w w .  ja  v  a  2  s .  co  m*/
    writer.flush();
    writer.close();

    response.flushBuffer();
    return mapping.findForward("");
}

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From source file:net.siegmar.japtproxy.misc.IOHandler.java

/**
 * Sends a locally stored pool object to the client. This method will
 * send HTTP status code 304 (not modified) if the client sent a
 * 'If-Modified-Since' header and the pool object wasn't modified since
 * that date.//  ww  w .j a  va 2 s  .c om
 *
 * @param poolObject           the pool object to sent
 * @param requestModifiedSince the "If-Modified-Since" header
 * @param res                  the HttpServletResponse object
 * @throws IOException is thrown if a problem occured while sending data
 */
protected void sendLocalFile(final PoolObject poolObject, final long requestModifiedSince,
        final HttpServletResponse res) throws IOException {
    final long poolModification = poolObject.getLastModified();

    if (requestModifiedSince != -1 && poolModification <= requestModifiedSince) {
        LOG.debug("Requested resource wasn't modified since last request. "
                + "Returning status code 304 - not modified");
        res.setStatus(HttpServletResponse.SC_NOT_MODIFIED);
        return;
    }

    res.setContentType(poolObject.getContentType());
    res.setContentLength((int) poolObject.getSize());
    res.setDateHeader(HttpHeaderConstants.LAST_MODIFIED, poolObject.getLastModified());

    InputStream is = null;
    final OutputStream sendOs = res.getOutputStream();

    try {
        LOG.info("Sending locally cached object '{}'", poolObject.getName());

        is = poolObject.getInputStream();
        IOUtils.copy(is, sendOs);
    } finally {
        IOUtils.closeQuietly(is);
    }
}

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