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:de.itsvs.cwtrpc.security.RpcRedirectStrategy.java

public void sendRedirect(HttpServletRequest request, HttpServletResponse response, String url)
        throws IOException {
    final String responseText;

    responseText = createResponseText(request, response, url);

    response.reset();
    addNoCacheResponseHeaders(request, response);
    if (isError()) {
        if (log.isDebugEnabled()) {
            log.debug("Instead of redirecting to url '" + url + "' error " + getStatusCode()
                    + " will be sent to client");
        }/* ww w.  j  a  va 2 s.co  m*/
        if (responseText.length() > 0) {
            response.sendError(getStatusCode(), responseText);
        } else {
            response.sendError(getStatusCode());
        }
    } else {
        if (log.isDebugEnabled()) {
            log.debug("Instead of redirecting to url '" + url + "' status code will be set to "
                    + getStatusCode());
        }
        response.setContentType(CONTENT_TYPE);
        response.setCharacterEncoding(CHARACTER_ENCODING);
        response.setStatus(getStatusCode());
        writeResponseText(request, response, CHARACTER_ENCODING, url);
        response.flushBuffer();
    }
}

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From source file:com.palantir.stash.stashbot.servlet.BuildSuccessReportingServlet.java

private void printOutput(HttpServletRequest req, HttpServletResponse res) throws IOException {
    res.reset();
    res.setStatus(200);/*from w  w  w . j  a v  a2s .c  o  m*/
    res.setContentType("text/plain;charset=UTF-8");
    Writer w = res.getWriter();
    w.append("Status Updated");
    w.close();
}

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From source file:com.migo.controller.SysGeneratorController.java

/**
 * ??// w w w . j  av  a  2 s .  c o m
 */
@SysLog("??")
@RequestMapping("/code")
@RequiresPermissions("sys:generator:code")
public void code(String tables, HttpServletResponse response) throws IOException {
    String[] tableNames = new String[] {};
    tableNames = JSON.parseArray(tables).toArray(tableNames);

    byte[] data = sysGeneratorService.generatorCode(tableNames);

    response.reset();
    response.setHeader("Content-Disposition", "attachment; filename=\"migo.zip\"");
    response.addHeader("Content-Length", "" + data.length);
    response.setContentType("application/octet-stream; charset=UTF-8");

    IOUtils.write(data, response.getOutputStream());
}

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From source file:org.fenixedu.academic.ui.struts.action.student.candidacy.FirstTimeEnrolmentDocuments.java

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

    response.reset();
    try {/*from  w w  w  .j a  v  a2  s . c  om*/
        response.getOutputStream().write(file.getContent());
        response.setContentLength(file.getContent().length);
        response.setContentType("application/pdf");
        response.flushBuffer();
    } catch (IOException e) {
        logger.error(e.getMessage(), e);
    }

    return null;
}

---

From source file:org.beangle.web.io.SplitStreamDownloader.java

@Override
public void download(HttpServletRequest request, HttpServletResponse response, InputStream input, String name,
        String display) {//from  ww  w  .  j  a  v a  2 s.  c om
    String attach = getAttachName(name, display);
    response.reset();
    addContent(request, response, attach);
    response.setHeader("Accept-Ranges", "bytes");
    response.setHeader("connection", "Keep-Alive");
    int length = 0;
    long start = 0L;
    long begin = 0L;
    long stop = 0L;
    StopWatch watch = new StopWatch();
    watch.start();
    try {
        length = input.available();
        stop = length - 1;
        response.setContentLength(length);
        String rangestr = request.getHeader("Range");
        if (null != rangestr) {
            String[] readlength = StringUtils.substringAfter(rangestr, "bytes=").split("-");
            start = Long.parseLong(readlength[0]);
            if (readlength.length > 1 && StringUtils.isNotEmpty(readlength[1])) {
                stop = Long.parseLong(readlength[1]);
            }
            if (start != 0) {
                response.setStatus(HttpServletResponse.SC_PARTIAL_CONTENT);
                String crange = "bytes " + start + "-" + stop + "/" + length;
                response.setHeader("Content-Range", crange);
            }
        }
        OutputStream output = response.getOutputStream();
        input.skip(start);
        begin = start;
        int size = 4 * 1024;
        byte[] buffer = new byte[size];
        for (int step = maxStep(start, stop, size); step > 0; step = maxStep(start, stop, size)) {
            int readed = input.read(buffer, 0, step);
            if (readed == -1)
                break;
            output.write(buffer, 0, readed);
            start += readed;
        }
    } catch (IOException e) {
    } catch (Exception e) {
        logger.warn("download file error " + attach, e);
    } finally {
        IOUtils.closeQuietly(input);
        if (logger.isDebugEnabled()) {
            String percent = null;
            if (length == 0) {
                percent = "100%";
            } else {
                percent = ((int) (((start - begin) * 1.0 / length) * 10000)) / 100.0f + "%";
            }
            long time = watch.getTime();
            int rate = 0;
            if (start - begin > 0) {
                rate = (int) (((start - begin) * 1.0 / time * 1000) / 1024);
            }
            logger.debug("{}({}-{}/{}) download {}[{}] in {} ms with {} KB/s",
                    array(attach, begin, stop, length, start - begin, percent, time, rate));
        }
    }
}

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

private void buildChart() {
    PrintWriter pw = null;// w w  w  .jav a  2s.c o m
    InputStream in = null;
    try {
        ChartReport chart = reportFac.findChartReportById(reportId);

        HttpServletResponse response = ServletActionContext.getResponse();
        pw = response.getWriter();

        response.reset();// 
        response.setContentLength(0);
        byte[] bytes = chartFactory.export(chart, paraMap);
        response.setContentLength(bytes.length);
        response.setHeader("Content-Type", "image/png");
        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.apache.kylin.rest.controller.BasicController.java

protected void setDownloadResponse(String downloadFile, final HttpServletResponse response) {
    File file = new File(downloadFile);
    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  ww . j  ava  2  s  .  co  m*/
    } catch (IOException e) {
        throw new InternalErrorException("Failed to download file: " + e.getMessage(), e);
    }
}

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From source file:org.apache.kylin.rest.controller.DiagnosisController.java

private void setDownloadResponse(String downloadFile, final HttpServletResponse response) {
    File file = new File(downloadFile);
    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();//  www .j  a  v a2s.  c om
    } catch (IOException e) {
        throw new InternalErrorException("Failed to create download for diagnosis. " + e.getMessage(), e);
    }
}

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From source file:com.fh.controller.upload.FileUploadController.java

/**
 * //from   www .j a v a  2  s  .  com
 * 
 * @param response
 * @param request
 * @param realName
 * @param name
 */
@RequestMapping("/download/{realName}/{name}")
public void download(HttpServletResponse response, HttpServletRequest request, @PathVariable String realName,
        @PathVariable String name) {
    OutputStream os = null;
    response.reset();
    realName = request.getSession().getServletContext().getRealPath("/") + "upload" + File.separator + realName;
    response.setHeader("Content-Disposition", "attachment; filename=" + name);
    response.setContentType("application/octet-stream; charset=utf-8");
    try {
        os = response.getOutputStream();
        os.write(FileUtils.readFileToByteArray(new File(realName)));
        os.flush();
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        if (os != null) {
            try {
                os.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}

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From source file:de.itsvs.cwtrpc.security.AbstractRpcFailureHandler.java

protected void writeUnexpectedException(HttpServletRequest request, HttpServletResponse response,
        Throwable exception) throws IOException {
    if (CwtRpcUtils.getRpcSessionInvalidationPolicy(request).isInvalidateOnUnexpectedException()) {
        invalidateSession(request);// w w w  .  jav  a 2  s  . co  m
    }

    response.reset();
    addNoCacheResponseHeaders(request, response);
    RPCServletUtils.writeResponseForUnexpectedFailure(getServletContext(), response, exception);
    response.flushBuffer();
}

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