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:com.sccl.attech.modules.sys.web.LoginController.java

@SuppressWarnings("resource")
@RequestMapping("${adminPath}/download")
public String download(@RequestParam String filePath, HttpServletRequest request,
        HttpServletResponse response) {
    String fp = filePath.replaceAll("\\"", "");
    String fpe = EncodedUtil.encodeValue(fp);
    System.out.println(fpe);/*from   ww w.  j  a  v a2 s.c o m*/
    File file = new File(fpe);
    InputStream inputStream;
    try {
        inputStream = new FileInputStream(fpe);
        response.reset();
        response.setContentType("application/octet-stream;charset=UTF-8");
        response.setHeader("Content-Disposition", "attachment; filename=\"" + file.getName() + "\"");
        OutputStream outputStream = new BufferedOutputStream(response.getOutputStream());
        byte data[] = new byte[1024];
        while (inputStream.read(data, 0, 1024) >= 0) {
            outputStream.write(data);
        }
        outputStream.flush();
        outputStream.close();
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
    return null;
}

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From source file:net.sourceforge.fenixedu.presentationTier.Action.candidate.degree.DegreeCandidacyManagementDispatchAction.java

public ActionForward showSummaryFile(ActionMapping mapping, ActionForm actionForm, HttpServletRequest request,
        HttpServletResponse response) {
    CandidacySummaryFile file = getCandidacy(request).getSummaryFile();

    response.reset();
    try {//from   w ww  .  j a va2 s. co  m
        response.getOutputStream().write(file.getContents());
        response.setContentLength(file.getContents().length);
        response.setContentType("application/pdf");
        response.flushBuffer();
    } catch (IOException e) {
        logger.error(e.getMessage(), e);
    }

    return null;
}

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From source file:org.apache.hama.manager.LogView.java

/**
 * download log file./*from  w ww . ja  v  a 2  s .  co m*/
 * 
 * @param filPath log file path.
 * @throws Exception
 */
public static void downloadFile(HttpServletResponse response, String filePath)
        throws ServletException, IOException {

    File file = new File(filePath);

    if (!file.exists()) {
        throw new ServletException("File doesn't exists.");
    }

    String headerKey = "Content-Disposition";
    String headerValue = "attachment; filename=\"" + file.getName() + "\"";

    BufferedInputStream in = null;
    BufferedOutputStream out = null;

    try {

        response.setContentType("application/octet-stream");
        response.setContentLength((int) file.length());
        response.setHeader(headerKey, headerValue);

        in = new BufferedInputStream(new FileInputStream(file));
        out = new BufferedOutputStream(response.getOutputStream());

        byte[] buffer = new byte[4 * 1024];
        int read = -1;

        while ((read = in.read(buffer)) != -1) {
            out.write(buffer, 0, read);
        }

    } catch (SocketException e) {
        // download cancel..
    } catch (Exception e) {
        response.reset();
        response.sendError(HttpURLConnection.HTTP_INTERNAL_ERROR, e.toString());
    } finally {
        if (in != null) {
            in.close();
        }
        if (out != null) {
            out.flush();
            out.close();
        }
    }
}

---

From source file:uws.service.error.DefaultUWSErrorWriter.java

/**
 * <p>Formats and writes the given error in the HTTP servlet response.</p>
 * <p>A JSON response is printed with: the HTTP error code, the error type, the name of the exception, the message and the list of all causes' message.</p>
 * /*from w w w  . jav a 2s  .c  o m*/
 * @param message         Error message to write.
 * @param type            Type of the error: FATAL or TRANSIENT.
 * @param httpErrorCode      HTTP error code (i.e. 404, 500).
 * @param reqID            ID of the request at the origin of the specified error.
 * @param action         Action which generates the error <i><u>note:</u> displayed only if not NULL and not empty.
 * @param user            User which is at the origin of the request/action which generates the error.
 * @param response         Response in which the error must be written.
 * 
 * @throws IOException      If there is an error while writing the given exception.
 */
protected void formatJSONError(final String message, final ErrorType type, final int httpErrorCode,
        final String reqID, final String action, final JobOwner user, final HttpServletResponse response)
        throws IOException {
    try {
        // Erase anything written previously in the HTTP response:
        response.reset();

        // Set the HTTP status:
        response.setStatus(httpErrorCode);

        // Set the MIME type of the answer (JSON):
        response.setContentType(UWSSerializer.MIME_TYPE_JSON);

        // Set the character encoding:
        response.setCharacterEncoding(UWSToolBox.DEFAULT_CHAR_ENCODING);

    } catch (IllegalStateException ise) {
        /*   If it is not possible any more to reset the response header and body,
         * the error is anyway written in order to corrupt the HTTP response.
         *   Thus, it will be obvious that an error occurred and the result is
         * incomplete and/or wrong.*/
    }

    PrintWriter out;
    try {
        out = response.getWriter();
    } catch (IllegalStateException ise) {
        /*   This exception may occur just because either the writer or
         * the output-stream can be used (because already got before).
         *   So, we just have to get the output-stream if getting the writer
         * throws an error.*/
        out = new PrintWriter(new BufferedWriter(new OutputStreamWriter(response.getOutputStream())));
    }

    try {
        JSONWriter json = new JSONWriter(out);

        json.object();
        json.key("errorcode").value(httpErrorCode);
        json.key("errortype").value(type.toString());
        if (reqID != null)
            json.key("requestid").value(reqID);
        if (action != null)
            json.key("action").value(action);
        json.key("message").value(message);

        json.endObject();

        out.flush();

    } catch (JSONException je) {
        logger.logUWS(LogLevel.ERROR, null, "FORMAT_ERROR", "Impossible to format/write an error in JSON!", je);
        throw new IOException("Error while formatting the error in JSON!", je);
    }
}

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From source file:org.sakaiproject.tool.assessment.ui.bean.evaluation.ExportResponsesBean.java

public void exportExcel(ActionEvent event) {
    log.debug("exporting as Excel: assessment id =  " + getAssessmentId());
    // allow local customization of spreadsheet output
    FacesContext faces = FacesContext.getCurrentInstance();
    HttpServletResponse response = (HttpServletResponse) faces.getExternalContext().getResponse();
    response.reset(); // Eliminate the added-on stuff
    response.setHeader("Pragma", "public"); // Override old-style cache control
    response.setHeader("Cache-Control", "public, must-revalidate, post-check=0, pre-check=0, max-age=0"); // New-style
    writeDataToResponse(getSpreadsheetData(), getDownloadFileName(), response);
    faces.responseComplete();/*w w  w  .j av a2  s . co m*/
}

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From source file:uws.service.error.DefaultUWSErrorWriter.java

/**
 * <p>Formats and writes the given error in the HTTP servlet response.</p>
 * <p>A full HTML response is printed with: the HTTP error code, the error type, the name of the exception, the message and the full stack trace.</p>
 * /*from w ww.  j  a va  2 s  . c om*/
 * @param message         Error message to write.
 * @param type            Type of the error: FATAL or TRANSIENT.
 * @param httpErrorCode      HTTP error code (i.e. 404, 500).
 * @param reqID            ID of the request at the origin of the specified error.
 * @param action         Action which generates the error <i><u>note:</u> displayed only if not NULL and not empty.
 * @param user            User which is at the origin of the request/action which generates the error.
 * @param response         Response in which the error must be written.
 * 
 * @throws IOException      If there is an error while writing the given exception.
 */
protected void formatHTMLError(final String message, final ErrorType type, final int httpErrorCode,
        final String reqID, final String action, final JobOwner user, final HttpServletResponse response)
        throws IOException {
    try {
        // Erase anything written previously in the HTTP response:
        response.reset();

        // Set the HTTP status:
        response.setStatus(httpErrorCode);

        // Set the MIME type of the answer (XML for a VOTable document):
        response.setContentType(UWSSerializer.MIME_TYPE_HTML);

        // Set the character encoding:
        response.setCharacterEncoding(UWSToolBox.DEFAULT_CHAR_ENCODING);

    } catch (IllegalStateException ise) {
        /*   If it is not possible any more to reset the response header and body,
         * the error is anyway written in order to corrupt the HTTP response.
         *   Thus, it will be obvious that an error occurred and the result is
         * incomplete and/or wrong.*/
    }

    PrintWriter out;
    try {
        out = response.getWriter();
    } catch (IllegalStateException ise) {
        /*   This exception may occur just because either the writer or
         * the output-stream can be used (because already got before).
         *   So, we just have to get the output-stream if getting the writer
         * throws an error.*/
        out = new PrintWriter(new BufferedWriter(new OutputStreamWriter(response.getOutputStream())));
    }

    // Header:
    out.println("<html>\n\t<head>");
    out.println("\t\t<meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\" />");
    out.println("\t\t<style type=\"text/css\">");
    out.println("\t\t\tbody { background-color: white; color: black; }");
    out.println(
            "\t\t\th2 { font-weight: bold; font-variant: small-caps; text-decoration: underline; font-size: 1.5em; color: #4A4A4A; }");
    out.println("\t\t\tul, ol { margin-left: 2em; margin-top: 0.2em; text-align: justify; }");
    out.println("\t\t\tli { margin-bottom: 0.2em; margin-top: 0; }");
    out.println("\t\t\tp, p.listheader { text-align: justify; text-indent: 2%; margin-top: 0; }");
    out.println("\t\t\ttable { border-collapse: collapse; }");
    out.println("\t\t\ttable, th, td { border: 1px solid #FC8813; }");
    out.println("\t\t\tth { background-color: #F29842; color: white; font-size: 1.1em; }");
    out.println("\t\t\ttr.alt { background-color: #FFDAB6; }");
    out.println("\t\t</style>");
    out.println("\t\t<title>SERVICE ERROR</title>");
    out.println("\t</head>\n\t<body>");

    // Title:
    String errorColor = (type == ErrorType.FATAL) ? "red" : "orange";
    out.println("\t\t<h1 style=\"text-align: center; background-color:" + errorColor
            + "; color: white; font-weight: bold;\">SERVICE ERROR - " + httpErrorCode + "</h1>");

    // Description part:
    out.println("\t\t<h2>Description</h2>");
    out.println("\t\t<ul>");
    out.println("\t\t\t<li><b>Type: </b>" + type + "</li>");
    if (reqID != null)
        out.println("\t\t\t<li><b>Request ID: </b>" + reqID + "</li>");
    if (action != null)
        out.println("\t\t\t<li><b>Action: </b>" + action + "</li>");
    out.println("\t\t\t<li><b>Message:</b><p>" + message + "</p></li>");
    out.println("\t\t</ul>");

    out.println("\t</body>\n</html>");

    out.flush();
}

---

From source file:com.feilong.controller.DownloadController.java

public void downLoad(String filePath, HttpServletResponse response, boolean isOnLine) throws Exception {
    File f = new File(filePath);
    if (!f.exists()) {
        response.sendError(404, "File not found!");
        return;// www.ja  va 2  s  .  c om
    }
    BufferedInputStream br = new BufferedInputStream(new FileInputStream(f));
    byte[] buf = new byte[1024];
    int len = 0;

    response.reset(); // ???
    if (isOnLine) { // ?
        URL u = new URL("file:///" + filePath);
        response.setContentType(u.openConnection().getContentType());
        response.setHeader("Content-Disposition", "inline; filename=" + f.getName());
        // ????UTF-8
    } else { // ?
        response.setContentType("application/x-msdownload");
        response.setHeader("Content-Disposition", "attachment; filename=" + f.getName());
    }
    OutputStream out = response.getOutputStream();
    while ((len = br.read(buf)) > 0)
        out.write(buf, 0, len);
    br.close();
    out.close();
}

---

From source file:de.iteratec.iteraplan.presentation.dialog.Templates.TemplatesController.java

@RequestMapping(method = RequestMethod.POST)
public String onSubmit(@ModelAttribute("dialogMemory") TemplatesDialogMemory dialogMem, ModelMap model,
        HttpSession session, MultipartHttpServletRequest req, HttpServletResponse response) {

    UserContext userContext = UserContext.getCurrentUserContext();
    userContext.getPerms().assureFunctionalPermission(TypeOfFunctionalPermission.TEMPLATES);
    response.reset();

    dialogMem.clearErrors();//from  w  w w .  j ava 2s. c o  m

    String action = dialogMem.getAction();
    if ("upload".equals(action)) {
        dialogMem.setUploadSuccessful(false);
        MultipartFile uploadedFile = uploadTemplate(dialogMem, req);
        if (uploadedFile == null) {
            return INIT_VIEW;
        }
        save(TemplateType.getTypeFromKey(dialogMem.getTargetTemplateType()), uploadedFile);
    } else if ("remove".equals(action)) {
        removeTemplate(dialogMem);
    } else if ("download".equals(action)) {
        downloadTemplate(dialogMem, response);
    }

    /*  Custom dashboard things */
    else if ("createDashboardTemplate".equals(action)) {
        // create a new dashboard template
        if (dialogMem.getSelectedBBTypeId() != null) { // it is necessary that a bbt has been selected

            CustomDashboardTemplatesDialogMemory cdtDialogMem = dialogMem.getCustomDashboardDialogMemory();

            // load the selected building Block Type
            BuildingBlockType bbt = bbTypeService.loadObjectById(dialogMem.getSelectedBBTypeId());

            // create a new empty dashboard template with the building Block Type
            cdtDialogMem.setCustomDashboardTemplate(new CustomDashboardTemplate(bbt, "", "", ""));

            // load the saved querys for the dashboard template editor
            cdtDialogMem.setSavedQueries(savedQueryService.getAllSavedQueryForDashboards(bbt));
        }
    } else if ("setDashboardTemplateToEdit".equals(action)) {
        // load the custom dashboard template
        CustomDashboardTemplate customDashboardTemplate = customDashboardTemplateService
                .findById(dialogMem.getCustomDashboardId());
        dialogMem.getCustomDashboardDialogMemory().setCustomDashboardTemplate(customDashboardTemplate);

        // load the saved queries for the dashboard template editor
        BuildingBlockType bbt = dialogMem.getCustomDashboardDialogMemory().getCustomDashboardSelectedBBType();
        dialogMem.getCustomDashboardDialogMemory()
                .setSavedQueries(savedQueryService.getAllSavedQueryForDashboards(bbt));
    } else if ("rollbackDashboardTemplate".equals(action)) {
        initCustomDashboardDialogMemory(dialogMem);
    } else if ("saveDashboardTemplate".equals(action)) {
        // save Dashboard Template
        customDashboardTemplateService.saveCustomDashboardTemplate(
                dialogMem.getCustomDashboardDialogMemory().getCustomDashboardTemplate());
        initCustomDashboardDialogMemory(dialogMem);
    } else if ("deleteDashboardTemplate".equals(action)) {

        CustomDashboardTemplate customDashboardTemplate = customDashboardTemplateService
                .findById(dialogMem.getCustomDashboardId());

        List<CustomDashboardInstance> templates = customDashboardInstanceService
                .getCustomDashboardByDashboardTemplate(customDashboardTemplate);
        if (!templates.isEmpty()) {
            dialogMem.addError(MessageAccess.getString("customDashboard.deleteTemplate.warning"));
        } else {

            if (customDashboardTemplate
                    .equals(dialogMem.getCustomDashboardDialogMemory().getCustomDashboardTemplate())) {
                dialogMem.getCustomDashboardDialogMemory().setCustomDashboardTemplate(null);
                dialogMem.getCustomDashboardDialogMemory().setCustomDashboardSelectedBBType(null);
            }
            customDashboardTemplateService.deleteCustomDashboardTemplate(customDashboardTemplate);
            initCustomDashboardDialogMemory(dialogMem);
        }
    } else if ("edit".equals(action)) {
        dialogMem.getCustomDashboardDialogMemory()
                .setSelectedTab(CustomDashboardTemplatesDialogMemory.MODE_EDIT);
    } else if ("preview".equals(action)) {
        dialogMem.getCustomDashboardDialogMemory()
                .setSelectedTab(CustomDashboardTemplatesDialogMemory.MODE_PREVIEW);
    } else if ("metadata".equals(action)) {
        dialogMem.getCustomDashboardDialogMemory()
                .setSelectedTab(CustomDashboardTemplatesDialogMemory.MODE_METADATA);
    }

    refillDialogMem(dialogMem);

    updateGuiContext(dialogMem);

    return INIT_VIEW;
}

---

From source file:fll.web.report.PerformanceScoreDump.java

protected void processRequest(final HttpServletRequest request, final HttpServletResponse response,
        final ServletContext application, final HttpSession session) throws IOException, ServletException {
    CSVWriter csv = null;/*from   w  w w .ja v  a 2 s.co m*/
    Connection connection = null;
    try {
        final DataSource datasource = ApplicationAttributes.getDataSource(application);
        connection = datasource.getConnection();

        final int tournamentID = Queries.getCurrentTournament(connection);

        response.reset();
        response.setContentType("text/csv");
        response.setHeader("Content-Disposition", "filename=performance_scores.csv");

        csv = new CSVWriter(response.getWriter());

        writeHeader(csv);
        writeData(connection, tournamentID, csv);

    } catch (final SQLException e) {
        throw new RuntimeException(e);
    } finally {
        IOUtils.closeQuietly(csv);
        SQLFunctions.close(connection);
    }
}

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From source file:com.groupon.odo.controllers.ServerMappingController.java

/**
 * Returns a X509 binary certificate for a given domain name if a certificate has been generated for it
 *
 * @param locale//  www . j  a v  a 2s  .  c  o m
 * @param model
 * @param response
 * @param hostname
 * @throws Exception
 */
@RequestMapping(value = "/cert/{hostname:.+}", method = { RequestMethod.GET, RequestMethod.HEAD })
public @ResponseBody void getCert(Locale locale, Model model, HttpServletResponse response,
        @PathVariable String hostname) throws Exception {
    // Set the appropriate headers so the browser thinks this is a file
    response.reset();
    response.setContentType("application/x-x509-ca-cert");
    response.setHeader("Content-Disposition", "attachment;filename=" + hostname + ".cer");

    // special handling for hostname=="root"
    // return the CyberVillians Root Cert in this case
    if (hostname.equals("root")) {
        hostname = "cybervillainsCA";
        response.setContentType("application/pkix-cert ");
    }

    // get the cert for the hostname
    KeyStoreManager keyStoreManager = com.groupon.odo.bmp.Utils.getKeyStoreManager(hostname);

    if (hostname.equals("cybervillainsCA")) {
        // get the cybervillians cert from resources
        File root = new File("seleniumSslSupport" + File.separator + hostname);

        // return the root cert
        Files.copy(new File(root.getAbsolutePath() + File.separator + hostname + ".cer").toPath(),
                response.getOutputStream());
        response.flushBuffer();
    } else {
        // return the cert for the appropriate alias
        response.getOutputStream().write(keyStoreManager.getCertificateByAlias(hostname).getEncoded());
        response.flushBuffer();
    }

}

---

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