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.glaf.oa.reports.web.springmvc.OAReportController.java

public static void exportExcel(String fileName, String targetName, Map<String, Object> datas,
        HttpServletResponse response) {
    fileName = SystemProperties.getAppPath() + "/WEB-INF/conf/templates/oa/" + fileName + ".xls";
    XLSTransformer transformer = new XLSTransformer();
    FileInputStream fis = null;//from   w w  w . j  a  v a 2s . c o m
    OutputStream os = null;
    Workbook workbook = null;
    try {
        fis = new FileInputStream(fileName);
        workbook = transformer.transformXLS(fis, datas);
        response.reset();
        response.setHeader("content-disposition", "attachment; filename=" + targetName + ".xls");
        response.setContentType("application/msexcel");
        os = response.getOutputStream();
        if (os != null) {
            workbook.write(os);
        }
    } catch (FileNotFoundException e) {
        logger.error("exportExcel:" + e.getMessage());
    } catch (ParsePropertyException e) {
        logger.error("exportExcel:" + e.getMessage());
    } catch (InvalidFormatException e) {
        logger.error("exportExcel:" + e.getMessage());
    } catch (IOException e) {
        logger.error("exportExcel:" + e.getMessage());
    } finally {
        try {
            if (fis != null)
                fis.close();
            if (os != null) {
                os.flush();
                os.close();
            }
        } catch (IOException e) {
            logger.debug("exportExcel:" + e.getMessage());
        }
    }

}

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From source file:org.jbpm.formModeler.service.bb.mvc.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  www.  j a  v a 2s  .c o  m
        return false;
    }

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

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

@SuppressFBWarnings(value = {
        "SQL_PREPARED_STATEMENT_GENERATED_FROM_NONCONSTANT_STRING" }, justification = "Dynamic table based upon categories")
@Override/* ww  w.  j a  v a 2 s.co  m*/
protected final void doPost(final HttpServletRequest request, final HttpServletResponse response)
        throws IOException, ServletException {
    final ObjectMapper jsonMapper = new ObjectMapper();
    response.reset();
    response.setContentType("application/json");
    final PrintWriter writer = response.getWriter();

    final ServletContext application = getServletContext();

    int numNewJudges = 0;
    final DataSource datasource = ApplicationAttributes.getDataSource(application);
    Connection connection = null;
    PreparedStatement insertJudge = null;
    try {
        connection = datasource.getConnection();

        final int currentTournament = Queries.getCurrentTournament(connection);

        final StringWriter debugWriter = new StringWriter();
        IOUtils.copy(request.getReader(), debugWriter);

        if (LOGGER.isTraceEnabled()) {
            LOGGER.trace("Read data: " + debugWriter.toString());
        }

        final Reader reader = new StringReader(debugWriter.toString());

        final Collection<JudgeInformation> judges = jsonMapper.readValue(reader,
                JudgesTypeInformation.INSTANCE);

        final Collection<JudgeInformation> currentJudges = JudgeInformation.getJudges(connection,
                currentTournament);

        insertJudge = connection
                .prepareStatement("INSERT INTO Judges (id, category, Tournament, station) VALUES (?, ?, ?, ?)");
        insertJudge.setInt(3, currentTournament);

        for (final JudgeInformation judge : judges) {

            if (null != judge) {
                JudgeInformation found = null;
                for (final JudgeInformation cjudge : currentJudges) {
                    if (ComparisonUtils.safeEquals(cjudge, judge)) {
                        found = cjudge;
                    }
                }

                if (null == found) {
                    insertJudge.setString(1, judge.getId());
                    insertJudge.setString(2, judge.getCategory());
                    insertJudge.setString(4, judge.getGroup());
                    insertJudge.executeUpdate();
                    ++numNewJudges;
                }
            } // non-null judge
        } // foreach judge sent

        final UploadResult result = new UploadResult(true, "Successfully uploaded judges", numNewJudges);
        response.reset();
        jsonMapper.writeValue(writer, result);

    } catch (final SQLException e) {
        LOGGER.error("Error uploading judges", e);

        final UploadResult result = new UploadResult(false, e.getMessage(), numNewJudges);
        jsonMapper.writeValue(writer, result);
    } finally {
        SQLFunctions.close(insertJudge);
        SQLFunctions.close(connection);
    }

}

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From source file:com.byd.test.actions.OrderAction.java

License:asdf

@RequestMapping("xopera")
public ModelAndView xopera(HttpServletRequest request, HttpServletResponse response) {
    try {//from   w w  w.java 2s . c  om
        OutputStream out = response.getOutputStream();
        response.reset();
        response.setHeader("content-disposition", "attachment;filename=" + "fileName.xls");
        response.setContentType("application/x-octetstream;charset=gb2312");
        HSSFWorkbook workbook = new HSSFWorkbook();
        HSSFSheet sheet = null;
        String sheetName = "first sheet";
        sheet = workbook.createSheet(sheetName);
        System.out.println("*-*-----------------------");
        HSSFCell cell = sheet.createRow(1).createCell((short) 2);
        cell.setCellValue(323);
        workbook.write(out);
        out.flush();
        out.close();

    } catch (IOException ex) {
        Logger.getLogger(OrderAction.class.getName()).log(Level.SEVERE, null, ex);
    }

    String s = (String) request.getParameter("plantCode");//String a = request.getQueryString("");
    System.out.println("plantCode:  " + s);
    return new ModelAndView("myname");
}

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From source file:Buffering.java

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

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

    log("The default buffer size is " + size);

    out.println("The client won't see this");
    res.reset();
    out.println("Nor will the client see this!");
    res.reset();/*from   ww  w . ja v  a  2s  . c om*/
    out.println("And this won't be seen if sendError() is called");
    if (req.getParameter("param") == null) {
        res.sendError(res.SC_BAD_REQUEST, "param needed");
    }
}

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From source file:action.ImageResult.java

public void execute(ActionInvocation invocation) throws IOException {
    ImageAction action = (ImageAction) invocation.getAction();
    HttpServletResponse response = ServletActionContext.getResponse();
    ServletOutputStream sos = response.getOutputStream();
    BufferedOutputStream output = null;
    byte[] imgBytes = action.getCustomImageInBytes();
    System.out.println("imgBytes--->" + imgBytes.toString());

    response.reset();
    response.setBufferSize(10240);//from w w w .j av  a  2 s  . c  o  m
    response.setContentType("image/png");
    response.setContentLength(action.getCustomImageInBytes().length);
    response.setHeader("Content-Disposition", "inline; filename=\"sss\"");
    //response.getOutputStream().write(action.getCustomImageInBytes());
    // response.getOutputStream().flush();
    try {
        output = new BufferedOutputStream(response.getOutputStream(), 10240);
        output.write(imgBytes);
    } finally {
        // Gently close streams.
        if (output != null) {
            try {
                output.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}

---

From source file:com.sshdemo.common.report.manage.web.ParameterSetAction.java

private void buildText() {
    PrintWriter pw = null;//from  w  ww.j  a v a 2s.c  o  m
    InputStream in = null;
    try {
        TextReport report = reportFac.findTextReportById(reportId);
        HttpServletResponse response = ServletActionContext.getResponse();
        HttpServletRequest request = ServletActionContext.getRequest();

        pw = response.getWriter();
        response.reset();// 
        response.setContentLength(0);
        response.setCharacterEncoding("utf-8");
        response.setContentType("text/html; charset=utf-8");
        byte[] bytes = textFactory.export(paraMap, report, fileFormat, response, request);
        in = new ByteArrayInputStream(bytes);
        int len = 0;
        while ((len = in.read()) > -1) {
            pw.write(len);
        }
        pw.flush();
    } catch (Exception e) {
        // log.error(e.toString());
    } finally {
        if (pw != null) {
            try {
                pw.close();
                pw = null;
            } catch (Exception e) {
            }
        }
        if (in != null) {
            try {
                in.close();
                in = null;
            } catch (Exception e) {
            }
        }
    }
}

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From source file:org.sakaiproject.signup.tool.downloadEvents.DownloadEventBean.java

private void responseSettings(String filename, String mimetype, HttpServletResponse response) {
    // Stop IE from misbehaving
    response.reset(); // Eliminate the added-on stuff
    response.setHeader("Pragma", "public"); // Override old-style cache
    // control/* ww  w .j  ava 2 s  . co  m*/
    response.setHeader("Cache-Control", "public, must-revalidate, post-check=0, pre-check=0, max-age=0"); // New-style
    // Standard headers
    response.setContentType(mimetype);
    response.setHeader("Content-disposition", "attachment; filename=" + filename);
}

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From source file:in.arun.faces.fo.pdf.FoOutputStream.java

@Override
public void close() throws IOException {
    if (closed) {
        throw new IOException("Stream has already been closed");
    }/*from   ww  w . j a  v  a2  s . com*/

    closed = true;
    PdfResult result = buildPdf(this);

    FacesContext context = FacesContext.getCurrentInstance();

    HttpServletResponse response = (HttpServletResponse) context.getExternalContext().getResponse();
    HttpServletRequest request = (HttpServletRequest) context.getExternalContext().getRequest();

    response.reset();

    String fileName;
    if (null == (fileName = request.getParameter("output"))) {
        fileName = FilenameUtils.getBaseName(request.getRequestURL().toString());
    }

    fileName += ".pdf";

    response.setContentType(result.contentType);
    response.setContentLength(result.content.length);
    response.setHeader("content-disposition", "inline; FileName=\"" + fileName + "\"");

    OutputStream outputStream = response.getOutputStream();
    outputStream.write(result.content);
    outputStream.flush();

    context.responseComplete();
}

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From source file:com.pavikumbhar.javaheart.controller.FileUploadController.java

@RequestMapping(value = "/download", method = RequestMethod.GET)
public void download(@RequestParam("name") String name, final HttpServletRequest request,
        final HttpServletResponse response) {
    System.out.println("name : {}" + name);

    File file = new File("/app/" + name);
    System.out.println("Write response...");
    try (InputStream fileInputStream = new FileInputStream(file);
            OutputStream output = response.getOutputStream();) {

        response.reset();

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

        response.setHeader("Content-Disposition", "attachment; filename=\"" + file.getName() + "\"");

        IOUtils.copyLarge(fileInputStream, output);
        output.flush();//  w  w  w  .  j a va2s.c om
    } catch (IOException e) {
        System.out.println(e.getMessage());
    }

}

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