Example usage for javax.servlet.http HttpServletResponse reset

List of usage examples for javax.servlet.http HttpServletResponse reset

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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:org.apache.cocoon.servlet.RequestUtil.java

private static void manageException(HttpServletRequest req, HttpServletResponse res, Environment env,
        String uri, int errorStatus, String title, String message, String description, Exception e,
        ServletSettings settings, boolean verbose, Object sender) throws IOException {
    if (settings.isManageExceptions()) {
        if (env != null) {
            env.tryResetResponse();/*from   w  ww . j  av  a2  s .co  m*/
        } else {
            res.reset();
        }

        String type = Notifying.FATAL_NOTIFICATION;
        Map extraDescriptions = null;

        if (errorStatus == HttpServletResponse.SC_NOT_FOUND) {
            type = "resource-not-found";
            // Do not show the exception stacktrace for such common errors.
            e = null;
        } else {
            extraDescriptions = new HashMap(2);
            extraDescriptions.put(Notifying.EXTRA_REQUESTURI, req.getRequestURI());
            if (uri != null) {
                extraDescriptions.put("Request URI", uri);
            }

            // Do not show exception stack trace when log level is WARN or above. Show only message.
            if (verbose) {
                Throwable t = DefaultNotifyingBuilder.getRootCause(e);
                if (t != null) {
                    extraDescriptions.put(Notifying.EXTRA_CAUSE, t.getMessage());
                }

                e = null;
            }
        }

        Notifying n = new DefaultNotifyingBuilder().build(sender, e, type, title, "Cocoon Servlet", message,
                description, extraDescriptions);

        res.setContentType("text/html");
        res.setStatus(errorStatus);
        Notifier.notify(n, res.getOutputStream(), "text/html");
    } else {
        res.sendError(errorStatus, title);
        res.flushBuffer();
    }
}

From source file:com.cisco.ca.cstg.pdi.utils.Util.java

/**
 * This method is used to download files from specified path
 * @param response/*  www  .  j av  a2 s  .  c om*/
 * @param archiveFile
 */
public static void downloadArchiveFile(HttpServletResponse response, File archiveFile) {
    if (archiveFile.isFile()) {
        response.reset();
        response.setContentType("application/zip");
        response.setHeader("Content-Disposition", "attachment;filename=\"" + archiveFile.getName() + "\"");
        FileInputStream is = null;
        ServletOutputStream op = null;
        try {
            op = response.getOutputStream();
            double dLength = archiveFile.length();
            int iLength = 0;
            int num_read = 0;

            if (dLength >= Integer.MIN_VALUE && dLength <= Integer.MAX_VALUE) {
                iLength = (int) dLength;
            }
            byte[] arBytes = new byte[iLength];
            is = new FileInputStream(archiveFile);

            while (num_read < iLength) {
                int count = is.read(arBytes, num_read, iLength - num_read);
                if (count < 0) {
                    throw new IOException("end of stream reached");
                }
                num_read += count;
            }
            op.write(arBytes);
            op.flush();
        } catch (IOException e) {
            LOGGER.error(e.getMessage(), e);
        } finally {
            if (null != is) {
                try {
                    is.close();
                } catch (IOException e) {
                    LOGGER.error(e.getMessage(), e);
                }
            }
            if (null != op) {
                try {
                    op.close();
                } catch (IOException e) {
                    LOGGER.error(e.getMessage(), e);
                }
            }
        }
    }
}

From source file:org.zht.framework.web.utils.DownloadUtils.java

public static void download(HttpServletRequest request, HttpServletResponse response, String displayName,
        byte[] bytes) throws IOException {
    if (ArrayUtils.isEmpty(bytes)) {
        response.setContentType("text/html;charset=utf-8");
        response.setCharacterEncoding("utf-8");
        response.getWriter().write("??");
        return;/*from  ww w  .jav a 2  s  .  c o  m*/
    }

    String userAgent = request.getHeader("User-Agent");
    boolean isIE = (userAgent != null) && (userAgent.toLowerCase().indexOf("msie") != -1);

    response.reset();
    response.setHeader("Pragma", "No-cache");
    response.setHeader("Cache-Control", "must-revalidate, no-transform");
    response.setDateHeader("Expires", 0L);

    response.setContentType("application/x-download");
    response.setContentLength((int) bytes.length);

    String displayFilename = displayName.substring(displayName.lastIndexOf("_") + 1);
    displayFilename = displayFilename.replace(" ", "_");
    if (isIE) {
        displayFilename = URLEncoder.encode(displayFilename, "UTF-8");
        response.setHeader("Content-Disposition", "attachment;filename=\"" + displayFilename + "\"");
    } else {
        displayFilename = new String(displayFilename.getBytes("UTF-8"), "ISO8859-1");
        response.setHeader("Content-Disposition", "attachment;filename=" + displayFilename);
    }
    BufferedInputStream is = null;
    OutputStream os = null;
    try {
        os = response.getOutputStream();
        is = new BufferedInputStream(new ByteArrayInputStream(bytes));
        IOUtils.copy(is, os);
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        IOUtils.closeQuietly(is);
    }
}

From source file:org.apache.myfaces.tomahawk.util.ErrorPageWriter.java

public static void handleThrowable(FacesContext facesContext, Throwable ex)
        throws ServletException, IOException {

    prepareExceptionStack(ex);/* w  w w.j a  v a 2s.  c  om*/

    Object response = facesContext.getExternalContext().getResponse();
    if (response instanceof HttpServletResponse) {
        HttpServletResponse httpResp = (HttpServletResponse) response;
        if (!httpResp.isCommitted()) {
            httpResp.reset();
            httpResp.setContentType("text/html; charset=UTF-8");
            Writer writer = httpResp.getWriter();

            debugHtml(writer, facesContext, ex);

            log.error("An exception occurred", ex);
        } else {
            throwException(ex);
        }
    } else {
        throwException(ex);
    }
}

From source file:org.apache.myfaces.tomahawk.util.ErrorPageWriter.java

public static void handleExceptionList(FacesContext facesContext, List exceptionList)
        throws ServletException, IOException {
    for (int i = 0; i < exceptionList.size(); i++) {
        prepareExceptionStack((Exception) exceptionList.get(i));
    }/*  ww  w  . jav  a 2  s. c  o m*/

    Object response = facesContext.getExternalContext().getResponse();
    if (response instanceof HttpServletResponse) {
        HttpServletResponse httpResp = (HttpServletResponse) response;
        if (!httpResp.isCommitted()) {
            httpResp.reset();
            httpResp.setContentType("text/html; charset=UTF-8");
            Writer writer = httpResp.getWriter();

            debugHtml(writer, facesContext, exceptionList);

            for (int i = 0; i < exceptionList.size(); i++) {
                log.error("An exception occurred", (Exception) exceptionList.get(i));
            }
        } else {
            throwException((Exception) exceptionList.get(0));
        }
    } else {
        throwException((Exception) exceptionList.get(0));
    }
}

From source file:cn.guoyukun.spring.web.utils.DownloadUtils.java

public static void download(HttpServletRequest request, HttpServletResponse response, String displayName,
        byte[] bytes) throws IOException {

    if (ArrayUtils.isEmpty(bytes)) {
        response.setContentType("text/html;charset=utf-8");
        response.setCharacterEncoding("utf-8");
        response.getWriter().write("??");
        return;//from  ww  w.j  a  v a2s.co m
    }

    String userAgent = request.getHeader("User-Agent");
    boolean isIE = (userAgent != null) && (userAgent.toLowerCase().indexOf("msie") != -1);

    response.reset();
    response.setHeader("Pragma", "No-cache");
    response.setHeader("Cache-Control", "must-revalidate, no-transform");
    response.setDateHeader("Expires", 0L);

    response.setContentType("application/x-download");
    response.setContentLength((int) bytes.length);

    String displayFilename = displayName.substring(displayName.lastIndexOf("_") + 1);
    displayFilename = displayFilename.replace(" ", "_");
    if (isIE) {
        displayFilename = URLEncoder.encode(displayFilename, "UTF-8");
        response.setHeader("Content-Disposition", "attachment;filename=\"" + displayFilename + "\"");
    } else {
        displayFilename = new String(displayFilename.getBytes("UTF-8"), "ISO8859-1");
        response.setHeader("Content-Disposition", "attachment;filename=" + displayFilename);
    }
    BufferedInputStream is = null;
    OutputStream os = null;
    try {

        os = response.getOutputStream();
        is = new BufferedInputStream(new ByteArrayInputStream(bytes));
        IOUtils.copy(is, os);
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        IOUtils.closeQuietly(is);
    }
}

From source file:com.eryansky.modules.disk.utils.DiskUtils.java

/**
 * // w w w.j  a  v  a2s . c om
 * @param request
 * @param response
 * @param inputStream ?
 * @param displayName ??
 * @throws IOException
 */
public static void download(HttpServletRequest request, HttpServletResponse response, InputStream inputStream,
        String displayName) throws IOException {
    response.reset();
    WebUtils.setNoCacheHeader(response);
    String contentType = "application/x-download";
    if (StringUtils.isNotBlank(displayName)) {
        if (displayName.endsWith(".doc")) {
            contentType = "application/msword";
        } else if (displayName.endsWith(".docx")) {
            contentType = "application/vnd.openxmlformats-officedocument.wordprocessingml.document";
        } else if (displayName.endsWith(".xls")) {
            contentType = "application/vnd.ms-excel";
        } else if (displayName.endsWith(".xlsx")) {
            contentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
        } else if (displayName.endsWith(".ppt")) {
            contentType = "application/vnd.ms-powerpoint";
        } else if (displayName.endsWith(".pptx")) {
            contentType = "application/vnd.openxmlformats-officedocument.presentationml.presentation";
        } else if (displayName.endsWith(".pdf")) {
            contentType = "application/pdf";
        } else if (displayName.endsWith(".jpg") || displayName.endsWith(".jpeg")) {
            contentType = "image/jpeg";
        } else if (displayName.endsWith(".gif")) {
            contentType = "image/gif";
        } else if (displayName.endsWith(".bmp")) {
            contentType = "image/bmp";
        }
    }

    response.setContentType(contentType);
    response.setContentLength((int) inputStream.available());

    //        String displayFilename = displayName.substring(displayName.lastIndexOf("_") + 1);
    //        displayFilename = displayFilename.replace(" ", "_");
    WebUtils.setDownloadableHeader(request, response, displayName);
    BufferedInputStream is = null;
    OutputStream os = null;
    try {

        os = response.getOutputStream();
        is = new BufferedInputStream(inputStream);
        IOUtils.copy(is, os);
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        IOUtils.closeQuietly(is);
    }
}

From source file:org.beanfuse.utils.web.DownloadHelper.java

public static void download(HttpServletRequest request, HttpServletResponse response, InputStream inStream,
        String name, String display) {
    String attch_name = "";
    byte[] b = new byte[1024];
    int len = 0;// w w w  .ja va  2  s.  c  om
    try {
        String ext = StringUtils.substringAfterLast(name, ".");
        if (StringUtils.isBlank(display)) {
            attch_name = getAttachName(name);
        } else {
            attch_name = display;
            if (!attch_name.endsWith("." + ext)) {
                attch_name += "." + ext;
            }
        }
        response.reset();
        String contentType = response.getContentType();
        if (null == contentType) {
            if (StringUtils.isEmpty(ext)) {
                contentType = "application/x-msdownload";
            } else {
                contentType = contentTypes.getProperty(ext, "application/x-msdownload");
            }
            response.setContentType(contentType);
            logger.debug("set content type {} for {}", contentType, attch_name);
        }
        response.addHeader("Content-Disposition",
                "attachment; filename=\"" + encodeAttachName(request, attch_name) + "\"");
        while ((len = inStream.read(b)) > 0) {
            response.getOutputStream().write(b, 0, len);
        }
        inStream.close();
    } catch (Exception e) {
        logger.warn("download file error=" + attch_name, e);
    }
}

From source file:org.zht.framework.web.utils.DownloadUtils.java

public static void download(HttpServletRequest request, HttpServletResponse response, String filePath,
        String displayName) throws IOException {
    File file = new File(filePath);

    if (ZStrUtil.isEmpty(displayName)) {
        displayName = file.getName();//  w ww .  j  a v  a 2  s. c  o  m
    }
    if (!file.exists() || !file.canRead()) {
        response.setContentType("text/html;charset=utf-8");
        response.getWriter().write("??");
        return;
    }

    String userAgent = request.getHeader("User-Agent");
    boolean isIE = (userAgent != null) && (userAgent.toLowerCase().indexOf("msie") != -1);

    response.reset();
    response.setHeader("Pragma", "No-cache");
    response.setHeader("Cache-Control", "must-revalidate, no-transform");
    response.setDateHeader("Expires", 0L);

    response.setContentType("application/x-download");
    response.setContentLength((int) file.length());

    String displayFilename = displayName.substring(displayName.lastIndexOf("_") + 1);
    displayFilename = displayFilename.replace(" ", "_");
    if (isIE) {
        displayFilename = URLEncoder.encode(displayFilename, "UTF-8");
        response.setHeader("Content-Disposition", "attachment;filename=\"" + displayFilename + "\"");
    } else {
        displayFilename = new String(displayFilename.getBytes("UTF-8"), "ISO8859-1");
        response.setHeader("Content-Disposition", "attachment;filename=" + displayFilename);
    }
    BufferedInputStream is = null;
    OutputStream os = null;
    try {
        os = response.getOutputStream();
        is = new BufferedInputStream(new FileInputStream(file));
        IOUtils.copy(is, os);
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        IOUtils.closeQuietly(is);
    }
}

From source file:cn.guoyukun.spring.web.utils.DownloadUtils.java

public static void download(HttpServletRequest request, HttpServletResponse response, String filePath,
        String displayName) throws IOException {
    File file = new File(filePath);

    if (StringUtils.isEmpty(displayName)) {
        displayName = file.getName();//from w  w  w.j a  v a2s. c om
    }

    if (!file.exists() || !file.canRead()) {
        response.setContentType("text/html;charset=utf-8");
        response.getWriter().write("??");
        return;
    }

    String userAgent = request.getHeader("User-Agent");
    boolean isIE = (userAgent != null) && (userAgent.toLowerCase().indexOf("msie") != -1);

    response.reset();
    response.setHeader("Pragma", "No-cache");
    response.setHeader("Cache-Control", "must-revalidate, no-transform");
    response.setDateHeader("Expires", 0L);

    response.setContentType("application/x-download");
    response.setContentLength((int) file.length());

    String displayFilename = displayName.substring(displayName.lastIndexOf("_") + 1);
    displayFilename = displayFilename.replace(" ", "_");
    if (isIE) {
        displayFilename = URLEncoder.encode(displayFilename, "UTF-8");
        response.setHeader("Content-Disposition", "attachment;filename=\"" + displayFilename + "\"");
    } else {
        displayFilename = new String(displayFilename.getBytes("UTF-8"), "ISO8859-1");
        response.setHeader("Content-Disposition", "attachment;filename=" + displayFilename);
    }
    BufferedInputStream is = null;
    OutputStream os = null;
    try {

        os = response.getOutputStream();
        is = new BufferedInputStream(new FileInputStream(file));
        IOUtils.copy(is, os);
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        IOUtils.closeQuietly(is);
    }
}