Example usage for javax.servlet.http HttpServletResponse reset

Introduction

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

Prototype

public void reset();

Source Link

Document

Clears any data that exists in the buffer as well as the status code, headers.

Usage

From source file:fll.web.api.CheckAuthServlet.java

@Override
protected final void doGet(final HttpServletRequest request, final HttpServletResponse response)
        throws IOException, ServletException {
    final ServletContext application = getServletContext();

    final boolean authenticated = WebUtils.checkAuthenticated(request, application);
    final AuthResult result = new AuthResult(authenticated);

    final ObjectMapper jsonMapper = new ObjectMapper();

    response.reset();
    response.setContentType("application/json");
    final PrintWriter writer = response.getWriter();

    jsonMapper.writeValue(writer, result);

}

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From source file:com.fun.rrs.common.excel.ExportExcel.java

/**
 * //ww  w. ja  v a 2  s . com
 * @param fileName ??
 */
public ExportExcel write(HttpServletResponse response, String fileName) throws IOException {
    response.reset();
    response.setContentType("application/octet-stream; charset=utf-8");
    response.setHeader("Content-Disposition",
            "attachment; filename=" + java.net.URLEncoder.encode(fileName, "UTF-8"));
    write(response.getOutputStream());
    return this;
}

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From source file:org.apache.metron.rest.controller.PcapController.java

@ApiOperation(value = "Download Pcap Results for a page.")
@ApiResponses(value = { @ApiResponse(message = "Returns Pcap as a file download.", code = 200),
        @ApiResponse(message = "Job or page is missing.", code = 404) })
@RequestMapping(value = "/{jobId}/raw", method = RequestMethod.GET)
void raw(/* w  ww.j  a  va  2s .co m*/
        @ApiParam(name = "jobId", value = "Job ID of submitted job", required = true) @PathVariable String jobId,
        @ApiParam(name = "page", value = "Page number", required = true) @RequestParam Integer page,
        @RequestParam(defaultValue = "", required = false) String fileName, final HttpServletRequest request,
        final HttpServletResponse response) throws RestException {
    try (InputStream inputStream = pcapQueryService.getRawPcap(SecurityUtils.getCurrentUser(), jobId, page);
            OutputStream output = response.getOutputStream()) {
        response.reset();
        if (inputStream == null) {
            response.setStatus(HttpStatus.NOT_FOUND.value());
        } else {
            response.setContentType("application/octet-stream");
            if (fileName.isEmpty()) {
                fileName = String.format(PCAP_FILENAME_FORMAT, jobId, page);
            }
            response.setHeader("Content-Disposition", "attachment; filename=\"" + fileName + "\"");
            int size = IOUtils.copy(inputStream, output);
            response.setContentLength(size);
            output.flush();
        }
    } catch (IOException e) {
        throw new RestException(e);
    }
}

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From source file:com.baidu.upload.controller.ImageController.java

@RequestMapping("downloadImg")
public void downloadImg(Integer id, HttpServletRequest request, HttpServletResponse response) {
    Image image = imageService.get(id);
    String imgname = image.getName();
    ServletOutputStream out = null;//from   ww  w  .j  av  a 2s. c  om
    try {
        response.reset();
        String userAgent = request.getHeader("User-Agent");
        byte[] bytes = userAgent.contains("MSIE") ? imgname.getBytes() : imgname.getBytes("UTF-8");
        // fileName.getBytes("UTF-8")?safari?
        String fileName = new String(bytes, "ISO-8859-1");
        System.out.println(fileName);
        // ?
        response.setContentType("multipart/form-data");
        response.setHeader("Content-Disposition", "attachment;fileName=" + URLEncoder.encode(imgname, "UTF-8"));
        //?blob
        byte[] contents = image.getImgblob();
        out = response.getOutputStream();
        //?
        out.write(contents);
        out.flush();
    } catch (IOException e) {
        e.printStackTrace();
    }
}

---

From source file:MyServlet.java

public void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {
    res.setBufferSize(8 * 1024); // 8K buffer
    res.setContentType("text/html");
    PrintWriter out = res.getWriter();

    int size = res.getBufferSize(); // returns 8096 or greater

    // Record the default size, in the log
    log("The default buffer size is " + size);

    out.println("The client won't see this");
    res.reset();
    out.println("And this won't be seen if sendError() is called");
    if (req.getParameter("important_parameter") == null) {
        res.sendError(res.SC_BAD_REQUEST, "important_parameter needed");
    }//w w  w  .  java2  s .c  o m
}

---

From source file:me.utils.excel.ExportExcelme.java

/**
 * /* www  . j  av a2 s. c  om*/
 * @param fileName ??
 */
public ExportExcelme write(HttpServletResponse response, String fileName) throws IOException {
    response.reset();
    response.setContentType("application/octet-stream; charset=utf-8");
    response.setHeader("Content-Disposition", "attachment; filename=" + Encodes.urlEncode(fileName));
    write(response.getOutputStream());
    return this;
}

---

From source file:org.displaytag.filter.ExportDelegate.java

/**
 * Actually writes exported data. Extracts content from the Map stored in request with the
 * <code>TableTag.FILTER_CONTENT_OVERRIDE_BODY</code> key.
 * /* w  ww .  j  av  a 2s.  c  o  m*/
 * @param wrapper BufferedResponseWrapper implementation
 * @param response HttpServletResponse
 * @param request ServletRequest
 * @throws IOException exception thrown by response writer/outputStream
 */
protected static void writeExport(HttpServletResponse response, ServletRequest request,
        BufferedResponseWrapper wrapper) throws IOException {

    if (wrapper.isOutRequested()) {
        // data already written
        log.debug("Filter operating in unbuffered mode. Everything done, exiting");
        return;
    }

    // if you reach this point the PARAMETER_EXPORTING has been found, but the special header has never been set in
    // response (this is the signal from table tag that it is going to write exported data)
    log.debug("Filter operating in buffered mode. ");

    Map bean = (Map) request.getAttribute(TableTag.FILTER_CONTENT_OVERRIDE_BODY);

    if (log.isDebugEnabled()) {
        log.debug(bean);
    }

    Object pageContent = bean.get(TableTagParameters.BEAN_BODY);

    if (pageContent == null) {
        if (log.isDebugEnabled()) {
            log.debug("Filter is enabled but exported content has not been found. Maybe an error occurred?");
        }

        PrintWriter out = response.getWriter();
        out.write(wrapper.getContentAsString());
        out.flush();
        return;
    }

    // clear headers
    if (!response.isCommitted()) {
        response.reset();
    }

    String filename = (String) bean.get(TableTagParameters.BEAN_FILENAME);
    String contentType = "application/download";

    String characterEncoding = wrapper.getCharacterEncoding();
    String wrappedContentType = wrapper.getContentType();

    if (wrappedContentType != null && wrappedContentType.indexOf("charset") > -1) {
        // charset is already specified (see #921811)
        characterEncoding = StringUtils.substringAfter(wrappedContentType, "charset=");
    }

    if (characterEncoding != null && contentType.indexOf("charset") == -1) //$NON-NLS-1$
    {
        contentType += "; charset=" + characterEncoding; //$NON-NLS-1$
    }

    ExibicaoDocumento exibicao = new ExibicaoDocumento();
    exibicao.setTipoConteudo(contentType);
    exibicao.setNomeArquivo(filename);
    exibicao.setAsAttachment(true);
    if (((String) bean.get(TableTagParameters.BEAN_CONTENTTYPE)).indexOf("excel") > -1) {
        exibicao.setExtensaoArquivo(".xls");
    } else if (((String) bean.get(TableTagParameters.BEAN_CONTENTTYPE)).indexOf("csv") > -1) {
        exibicao.setExtensaoArquivo(".csv");
    } else if (((String) bean.get(TableTagParameters.BEAN_CONTENTTYPE)).indexOf("xml") > -1) {
        exibicao.setExtensaoArquivo(".xml");
    } else if (((String) bean.get(TableTagParameters.BEAN_CONTENTTYPE)).indexOf("pdf") > -1) {
        exibicao.setExtensaoArquivo(".pdf");
    }

    byte[] content;
    if (pageContent instanceof String) {
        content = ((String) pageContent).getBytes(characterEncoding);
    } else {
        content = (byte[]) pageContent;
    }

    try {
        exibicao.gerarExibicaoDocumento(response, content);
    } catch (CDException cde) {
        // TODO Tratar erro....
    }
}

---

From source file:org.massyframework.assembly.base.web.HttpResourceProcessorManagement.java

/**
 * ??//from ww w.j av  a  2  s.co  m
 * @param resp
 * @param sc
 * @throws IOException
 */
private void sendError(final HttpServletResponse resp, int sc) throws IOException {
    try {
        // we need to reset headers for 302 and 403
        resp.reset();
        resp.sendError(sc);
    } catch (IllegalStateException e) {
        // this could happen if the response has already been committed
    }
}

---

From source file:org.sakaiproject.kernel.rest.count.RestCountProvider.java

/**
 * {@inheritDoc}//from w  ww. ja v a  2  s  .c om
 *
 * @see org.sakaiproject.kernel.api.rest.RestProvider#dispatch(java.lang.String[],
 *      javax.servlet.http.HttpServletRequest,
 *      javax.servlet.http.HttpServletResponse)
 */
public void dispatch(String[] elements, HttpServletRequest request, HttpServletResponse response) {
    try {
        String path = request.getPathInfo().substring(KEY.length() + 1);
        Node n = jcrNodeFactoryService.getNode(path);

        if (n == null) {
            response.reset();
            response.sendError(HttpServletResponse.SC_NOT_FOUND);
            return;
        }

        // String primaryNodeType = n.getPrimaryNodeType().getName();
        if (n.hasProperty(JCRConstants.JCR_SMARTNODE)) {
            handleSmartNode(request, response, n);
        } else { // if (JCRConstants.NT_FOLDER.equals(primaryNodeType)) {
            doDefaultGet(request, response, n);
        }
    } catch (RepositoryException e) {
        throw new RestServiceFaultException(e.getLocalizedMessage(), e);
    } catch (JCRNodeFactoryServiceException e) {
        throw new RestServiceFaultException(e.getLocalizedMessage(), e);
    } catch (IOException e) {
        throw new RestServiceFaultException(e.getLocalizedMessage(), e);
    }
}

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From source file:org.jboss.dashboard.ui.controller.responses.SendStreamResponse.java

public boolean execute(CommandRequest cmdReq) throws Exception {
    if (log.isDebugEnabled())
        log.debug("SendStreamResponse");

    HttpServletResponse res = cmdReq.getResponseObject();

    if (errorCode != 0) {
        res.sendError(errorCode);//from   w w  w.  j av a2s.  c o m
        return false;
    }

    if (resetHeaders) {
        //Remove everything, including headers. The stream is often a file that may be cached.
        res.reset();
    }

    res.setHeader("Content-Encoding", HTTPSettings.lookup().getEncoding());
    if (contentDisposition != null) {
        res.setHeader("Content-Disposition", contentDisposition);
        log.debug("Content-Disposition = " + contentDisposition);
    }
    if (contentType != null) {
        res.setContentType(contentType);
    }
    res.setHeader("Content-Transfer-Encoding", "binary");

    if (contentLength < 0)
        contentLength = is.available();
    if (contentLength > 0) {
        res.setContentLength(contentLength);
        log.debug("Content-Length = " + contentLength);
    }

    try {
        OutputStream os = new BufferedOutputStream(cmdReq.getResponseObject().getOutputStream());
        IOUtils.copy(is, os);
        os.close();
        is.close();
    } catch (Exception e) {
        log.warn("Error sending Stream Response: " + e);
        //res.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
        return false;
    }
    return true;
}

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