Example usage for javax.servlet.http HttpServletResponse addHeader

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

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Introduction

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

Prototype

public void addHeader(String name, String value);

Source Link

Document

Adds a response header with the given name and value.

Usage

From source file:com.kappaware.logtrawler.Utils.java

public static void setCache(HttpServletResponse response, int cacheValue) {
    if (cacheValue == 0) {
        response.setHeader(HEADER_PRAGMA, "no-cache");
        // HTTP 1.0 header
        response.setDateHeader(HEADER_EXPIRES, 1L);
        // HTTP 1.1 header: "no-cache" is the standard value,
        // "no-store" is necessary to prevent caching on FireFox.
        response.setHeader(HEADER_CACHE_CONTROL, "no-cache");
        response.addHeader(HEADER_CACHE_CONTROL, "no-store");
        response.addHeader(HEADER_CACHE_CONTROL, "must-revalidate");
        response.addHeader(HEADER_CACHE_CONTROL, "post-check=0");
        response.addHeader(HEADER_CACHE_CONTROL, "pre-check=0");

    } else {//from  w w w. j  a va  2  s  . com
        response.setHeader(HEADER_CACHE_CONTROL, "public");
        long now = (new Date()).getTime();
        response.setDateHeader("Date", now);
        response.setDateHeader(HEADER_EXPIRES, now + (cacheValue * 1000L));
        // HTTP 1.1 header
        String headerValue = "max-age=" + Long.toString(cacheValue);
        response.setHeader(HEADER_CACHE_CONTROL, headerValue);
    }
}

From source file:com.jaspersoft.jasperserver.rest.RESTUtils.java

public static void sendFile(DataSource ds, HttpServletResponse response) {
    response.setContentType(ds.getContentType());

    if (ds.getName() != null && ds.getName().length() > 0) {
        response.addHeader("Content-Disposition", "attachment; filename=" + ds.getName());
    }/*from  w w  w  .j a v  a  2  s  .  c  om*/

    OutputStream outputStream = null;
    BufferedInputStream bufferedInputStream = null;
    try {
        outputStream = response.getOutputStream();

        bufferedInputStream = new BufferedInputStream(ds.getInputStream());
        int readBytes = 0;

        while ((readBytes = bufferedInputStream.read()) != -1) {
            outputStream.write(readBytes);
        }

        if (log.isDebugEnabled()) {
            log.debug("finished sending bytes");
        }

    } catch (IOException ex) {
        log.error("Error serving a file: " + ex.getMessage(), ex);
    } finally {
        if (outputStream != null)
            try {
                outputStream.close();
            } catch (Exception ex) {
            }
        if (bufferedInputStream != null)
            try {
                bufferedInputStream.close();
            } catch (Exception ex) {
            }
    }
}

From source file:org.esgf.legacydatacart.WgetGeneratorController.java

private static void writeBash(String wgetText, String filename, HttpServletResponse response) {
    try {/*from w w  w  .j  a  v a  2  s  . co m*/
        //attach the sh file extension to the response
        response.setContentType("text/x-sh");
        response.addHeader("Content-Disposition", "attachment; filename=" + filename);
        response.setContentLength((int) wgetText.length());

        PrintWriter out = response.getWriter();
        out.print(wgetText);
    } catch (Exception e) {
        e.printStackTrace();
    }
}

From source file:com.zimbra.cs.servlet.util.AuthUtil.java

/**
 * If returns null, then resp.sendError has been called.
 *//*from   w w  w.j  ava  2 s . co m*/
public static Account basicAuthRequest(HttpServletRequest req, HttpServletResponse resp, boolean sendChallenge,
        boolean isDav) throws IOException, ServiceException {
    try {
        return basicAuthRequest(req, !sendChallenge, isDav);
    } catch (UserServletException e) {
        if (e.getHttpStatusCode() == HttpServletResponse.SC_UNAUTHORIZED) {
            if (sendChallenge) {
                resp.addHeader(WWW_AUTHENTICATE_HEADER, getRealmHeader(req, null));
                resp.sendError(e.getHttpStatusCode(), e.getMessage());
            }
        } else {
            resp.sendError(e.getHttpStatusCode(), e.getMessage());
        }
        return null;
    }
}

From source file:com.zimbra.cs.dav.service.DavMethod.java

public static void setResponseHeader(HttpServletResponse resp, String name, String value) {
    while (value != null) {
        String val = value;
        if (value.length() > 70) {
            int index = value.lastIndexOf(',', 70);
            if (index == -1) {
                ZimbraLog.dav.warn("header value is too long for %s : %s", name, value);
                return;
            }/* w ww .  j  av  a 2 s. c o m*/
            val = value.substring(0, index);
            value = value.substring(index + 1).trim();
        } else {
            value = null;
        }
        resp.addHeader(name, val);
    }
}

From source file:com.fjn.helper.common.io.file.common.FileUpAndDownloadUtil.java

public static void downloadToBrowser(String filename, String realpath, HttpServletRequest request,
        HttpServletResponse response) {
    // ?MIME TYPE?
    //try {//from   w  w  w  .  j a  v  a  2s  .  c  o  m
    //      mimetypesMap=new MimetypesFileTypeMap(request.getSession().getServletContext().getRealPath("WEB-INF/my.mime.types"));
    mimetypesMap = new MimetypesFileTypeMap();
    //} catch (IOException e1) {
    //   e1.printStackTrace();
    //}

    //   response.setCharacterEncoding("UTF-8");
    response.setContentType(mimetypesMap.getContentType(filename));
    response.addHeader("Content-Disposition", "attachment;filename=" + toUTF8(filename));
    FileInputStream in = null;
    OutputStream out = null;
    try {
        /*   ????
           BufferedReader in = new BufferedReader(new InputStreamReader(
                 new FileInputStream(new File(realpath))));
           BufferedWriter out = new BufferedWriter(new OutputStreamWriter(
                 response.getOutputStream()));
           int length = -1;
           char[] chs = new char[1024];
           while ((length = in.read(chs)) != -1) {
              out.write(chs, 0, length);
           }
        */
        in = new FileInputStream(new File(realpath));
        out = response.getOutputStream();
        int length = -1;
        byte[] bs = new byte[1024];
        while ((length = in.read(bs)) != -1) {
            out.write(bs, 0, length);
        }

        out.flush();

    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        try {
            if (out != null)
                out.close();
            if (in != null)
                in.close();
        } catch (Exception ex) {

        }
    }

}

From source file:com.ikon.util.WebUtils.java

/**
 * Prepare to send the file./* w  w w. ja v  a2s.  c  o m*/
 */
public static void prepareSendFile(HttpServletRequest request, HttpServletResponse response, String fileName,
        String mimeType, boolean inline) throws UnsupportedEncodingException {
    String agent = request.getHeader("USER-AGENT");

    // Disable browser cache
    response.setHeader("Expires", "Sat, 6 May 1971 12:00:00 GMT");
    response.setHeader("Cache-Control", "must-revalidate");
    response.addHeader("Cache-Control", "no-store, no-cache, must-revalidate");
    response.addHeader("Cache-Control", "post-check=0, pre-check=0");
    response.setHeader("Pragma", "no-cache");

    // Set MIME type
    response.setContentType(mimeType);

    if (null != agent && -1 != agent.indexOf("MSIE")) {
        log.debug("Agent: Explorer ({})", request.getServerPort());
        fileName = URLEncoder.encode(fileName, "UTF-8").replaceAll("\\+", " ");

        if (request.getServerPort() == 443) {
            log.debug("HTTPS detected! Apply IE workaround...");
            response.setHeader("Cache-Control", "max-age=1");
            response.setHeader("Pragma", "public");
        }
    } else if (null != agent && -1 != agent.indexOf("Mozilla")) {
        log.debug("Agent: Mozilla");
        fileName = MimeUtility.encodeText(fileName, "UTF-8", "B");
    } else {
        log.debug("Agent: Unknown");
    }

    if (inline) {
        response.setHeader("Content-disposition", "inline; filename=\"" + fileName + "\"");
    } else {
        response.setHeader("Content-disposition", "attachment; filename=\"" + fileName + "\"");
    }
}

From source file:com.openkm.util.WebUtils.java

/**
 * Prepare to send the file.// w w w. j  a  v a 2s .com
 */
public static void prepareSendFile(HttpServletRequest request, HttpServletResponse response, String fileName,
        String mimeType, boolean inline) throws UnsupportedEncodingException {
    String userAgent = WebUtils.getHeader(request, "user-agent").toLowerCase();

    // Disable browser cache
    response.setHeader("Expires", "Sat, 6 May 1971 12:00:00 GMT");
    response.setHeader("Cache-Control", "must-revalidate");
    response.addHeader("Cache-Control", "no-store, no-cache, must-revalidate");
    response.addHeader("Cache-Control", "post-check=0, pre-check=0");
    response.setHeader("Pragma", "no-cache");

    // Set MIME type
    response.setContentType(mimeType);

    if (userAgent.contains("msie") || userAgent.contains("trident")) {
        log.debug("Agent: Explorer ({})", request.getServerPort());
        fileName = URLEncoder.encode(fileName, "UTF-8").replaceAll("\\+", " ");

        if (request.getServerPort() == 443) {
            log.debug("HTTPS detected! Apply IE workaround...");
            response.setHeader("Cache-Control", "max-age=1");
            response.setHeader("Pragma", "public");
        }
    } else if (userAgent.contains("iphone") || userAgent.contains("ipad")) {
        log.debug("Agent: iPhone - iPad");
        // Do nothing
    } else if (userAgent.contains("android")) {
        log.debug("Agent: Android");
        fileName = URLEncoder.encode(fileName, "UTF-8").replaceAll("\\+", " ");
    } else if (userAgent.contains("mozilla")) {
        log.debug("Agent: Mozilla");
        fileName = MimeUtility.encodeText(fileName, "UTF-8", "B");
    } else {
        log.debug("Agent: Unknown");
    }

    if (inline) {
        response.setHeader("Content-disposition", "inline; filename=\"" + fileName + "\"");
    } else {
        response.setHeader("Content-disposition", "attachment; filename=\"" + fileName + "\"");
    }
}

From source file:org.fcrepo.http.api.ContentExposingResource.java

private static void evaluateRequestPreconditions(final Request request,
        final HttpServletResponse servletResponse, final FedoraResource resource, final Session session,
        final boolean cacheControl) {

    final String txId = TransactionServiceImpl.getCurrentTransactionId(session);
    if (txId != null) {
        // Force cache revalidation if in a transaction
        servletResponse.addHeader(CACHE_CONTROL, "must-revalidate");
        servletResponse.addHeader(CACHE_CONTROL, "max-age=0");
        return;//w  ww. j a v  a  2s . c  o m
    }

    final EntityTag etag = new EntityTag(resource.getEtagValue());
    final Date date = resource.getLastModifiedDate();
    final Date roundedDate = new Date();

    if (date != null) {
        roundedDate.setTime(date.getTime() - date.getTime() % 1000);
    }

    Response.ResponseBuilder builder = request.evaluatePreconditions(etag);
    if (builder != null) {
        builder = builder.entity("ETag mismatch");
    } else {
        builder = request.evaluatePreconditions(roundedDate);
        if (builder != null) {
            builder = builder.entity("Date mismatch");
        }
    }

    if (builder != null && cacheControl) {
        final CacheControl cc = new CacheControl();
        cc.setMaxAge(0);
        cc.setMustRevalidate(true);
        // here we are implicitly emitting a 304
        // the exception is not an error, it's genuinely
        // an exceptional condition
        builder = builder.cacheControl(cc).lastModified(date).tag(etag);
    }
    if (builder != null) {
        throw new WebApplicationException(builder.build());
    }
}

From source file:com.anjz.util.CookieUtils.java

private static void setCookie(String key, String value, int maxAge, String path, String domainName,
        final boolean httpOnly, final boolean secure, HttpServletResponse response) {
    if (response != null) {
        Cookie cookie = new Cookie(key, value);
        cookie.setMaxAge(maxAge);/* w  ww  .ja v  a2 s  .co  m*/
        if (StringUtils.isNotBlank(path)) {
            cookie.setPath(path);
        } else {
            cookie.setPath(PATH);
        }
        if (StringUtils.isNotBlank(domainName)) {
            cookie.setDomain(domainName);
        }
        cookie.setVersion(0);
        cookie.setSecure(secure);
        if (httpOnly) {
            final StringBuffer buf = new StringBuffer();
            getCookieHeaderValue(cookie, buf, httpOnly);
            response.addHeader(getCookieHeaderName(cookie), buf.toString());
        } else {
            response.addCookie(cookie);
        }
    }
}