Example usage for com.liferay.portal.kernel.servlet BufferCacheServletResponse BufferCacheServletResponse

Introduction

In this page you can find the example usage for com.liferay.portal.kernel.servlet BufferCacheServletResponse BufferCacheServletResponse.

Prototype

public BufferCacheServletResponse(HttpServletResponse httpServletResponse) 

Source Link

Usage

From source file:com.fb.filter.OpenGraphFilter.java

License:Open Source License

@Override
protected void processFilter(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain)
        throws Exception {

    request.setAttribute(SKIP_FILTER, Boolean.TRUE);

    if (_log.isDebugEnabled()) {
        String completeURL = HttpUtil.getCompleteURL(request);

        _log.debug("Adding Open Graph Attributes " + completeURL);
    }/*  w  w  w  .  ja v a 2s.  c om*/

    BufferCacheServletResponse bufferCacheServletResponse = new BufferCacheServletResponse(response);

    processFilter(OpenGraphFilter.class, request, bufferCacheServletResponse, filterChain);

    String content = bufferCacheServletResponse.getString();

    String contentType = response.getContentType();

    if ((contentType != null) && contentType.startsWith(ContentTypes.TEXT_HTML)) {

        content = getContent(request, content);

        ServletResponseUtil.write(response, content);
    } else {
        ServletResponseUtil.write(response, bufferCacheServletResponse);
    }
}

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From source file:com.liferay.content.targeting.analytics.hook.filter.YoutubeVideoHtmlFilter.java

License:Open Source License

@Override
protected void processFilter(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain)
        throws Exception {

    request.setAttribute(SKIP_FILTER, Boolean.TRUE);

    if (_log.isDebugEnabled()) {
        String completeURL = HttpUtil.getCompleteURL(request);

        _log.debug("Processing Youtube URLs for " + completeURL);
    }//ww  w  .j av  a 2  s  . co m

    BufferCacheServletResponse bufferCacheServletResponse = new BufferCacheServletResponse(response);

    processFilter(YoutubeVideoHtmlFilter.class, request, bufferCacheServletResponse, filterChain);

    String content = bufferCacheServletResponse.getString();

    String contentType = response.getContentType();

    if ((contentType != null) && contentType.startsWith(ContentTypes.TEXT_HTML)) {

        content = getContent(request, content);

        ServletResponseUtil.write(response, content);
    } else {
        ServletResponseUtil.write(response, bufferCacheServletResponse);
    }
}

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From source file:com.liferay.rtl.servlet.filters.dynamiccss.DynamicCSSFilter.java

License:Open Source License

protected Object getDynamicContent(HttpServletRequest request, HttpServletResponse response,
        FilterChain filterChain) throws Exception {

    String requestURI = request.getRequestURI();

    String requestPath = requestURI;

    String contextPath = request.getContextPath();

    if (!contextPath.equals(StringPool.SLASH)) {
        requestPath = requestPath.substring(contextPath.length());
    }//w  w  w . j  av  a 2s  . c o m

    URL resourceURL = _servletContext.getResource(requestPath);

    if (resourceURL == null) {
        return null;
    }

    URLConnection urlConnection = resourceURL.openConnection();

    String cacheCommonFileName = getCacheFileName(request);

    File cacheContentTypeFile = new File(_tempDir, cacheCommonFileName + "_E_CONTENT_TYPE");
    File cacheDataFile = new File(_tempDir, cacheCommonFileName + "_E_DATA");

    if (cacheDataFile.exists() && (cacheDataFile.lastModified() >= urlConnection.getLastModified())) {

        if (cacheContentTypeFile.exists()) {
            String contentType = FileUtil.read(cacheContentTypeFile);

            response.setContentType(contentType);
        }

        return cacheDataFile;
    }

    String dynamicContent = null;

    String content = null;

    try {
        if (requestPath.endsWith(_CSS_EXTENSION)) {
            if (_log.isInfoEnabled()) {
                _log.info("Parsing SASS on CSS " + requestPath);
            }

            content = StringUtil.read(urlConnection.getInputStream());

            dynamicContent = DynamicCSSUtil.parseSass(_servletContext, request, requestPath, content);

            response.setContentType(ContentTypes.TEXT_CSS);

            FileUtil.write(cacheContentTypeFile, ContentTypes.TEXT_CSS);
        } else if (requestPath.endsWith(_JSP_EXTENSION)) {
            if (_log.isInfoEnabled()) {
                _log.info("Parsing SASS on JSP or servlet " + requestPath);
            }

            BufferCacheServletResponse bufferCacheServletResponse = new BufferCacheServletResponse(response);

            processFilter(DynamicCSSFilter.class, request, bufferCacheServletResponse, filterChain);

            bufferCacheServletResponse.finishResponse();

            content = bufferCacheServletResponse.getString();

            dynamicContent = DynamicCSSUtil.parseSass(_servletContext, request, requestPath, content);

            FileUtil.write(cacheContentTypeFile, bufferCacheServletResponse.getContentType());
        } else {
            return null;
        }
    } catch (Exception e) {
        _log.error("Unable to parse SASS on CSS " + requestPath, e);

        if (_log.isDebugEnabled()) {
            _log.debug(content);
        }

        response.setHeader(HttpHeaders.CACHE_CONTROL, HttpHeaders.CACHE_CONTROL_NO_CACHE_VALUE);
    }

    if (dynamicContent != null) {
        FileUtil.write(cacheDataFile, dynamicContent);
    } else {
        dynamicContent = content;
    }

    return dynamicContent;
}

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