wro4j-core/src/main/java/ro/isdc/wro/manager/ResourceBundleProcessor.java
public void serveProcessedBundle()
      throws IOException {
    final WroConfiguration configuration = context.getConfig();
    final HttpServletRequest request = context.getRequest();
    final HttpServletResponse response = context.getResponse();

    OutputStream os = null;
    try {

      final CacheKey cacheKey = getSafeCacheKey(request);
      initAggregatedFolderPath(request, cacheKey.getType());
      final CacheValue cacheValue = cacheStrategy.get(cacheKey);

      // TODO move ETag check in wroManagerFactory
      final String ifNoneMatch = request.getHeader(HttpHeader.IF_NONE_MATCH.toString());

      // enclose etag value in quotes to be compliant with the RFC
      final String etagValue = String.format("\"%s\"", cacheValue.getHash());

      if (etagValue != null && etagValue.equals(ifNoneMatch)) {
        LOG.debug("ETag hash detected: {}. Sending {} status code", etagValue, HttpServletResponse.SC_NOT_MODIFIED);
        response.setStatus(HttpServletResponse.SC_NOT_MODIFIED);
        // because we cannot return null, return a stream containing nothing.
        // TODO close output stream?
        return;
      }
      /**
       * Set contentType before actual content is written, solves <br/>
       * <a href="http://code.google.com/p/wro4j/issues/detail?id=341">issue341</a>
       */
      response.setContentType(cacheKey.getType().getContentType() + "; charset=" + configuration.getEncoding());
      // set ETag header
      response.setHeader(HttpHeader.ETAG.toString(), etagValue);

      os = response.getOutputStream();
      if (cacheValue.getRawContent() != null) {
        // use gziped response if supported & Set content length based on gzip flag
        if (isGzipAllowed()) {
          response.setContentLength(cacheValue.getGzippedContent().length);
          // add gzip header and gzip response
          response.setHeader(HttpHeader.CONTENT_ENCODING.toString(), "gzip");
          response.setHeader("Vary", "Accept-Encoding");
          IOUtils.write(cacheValue.getGzippedContent(), os);
        } else {
          //using getRawContent().length() is not the same and can return 2Bytes smaller size.
          response.setContentLength(cacheValue.getRawContent().getBytes(configuration.getEncoding()).length);
          IOUtils.write(cacheValue.getRawContent(), os, configuration.getEncoding());
        }
      }
    } finally {
      if (os != null) {
        IOUtils.closeQuietly(os);
      }
    }
  }
public void serveProcessedBundle()
      throws IOException {
    final WroConfiguration configuration = context.getConfig();
    final HttpServletRequest request = context.getRequest();
    final HttpServletResponse response = context.getResponse();

    OutputStream os = null;
    try {

      final CacheKey cacheKey = getSafeCacheKey(request);
      initAggregatedFolderPath(request, cacheKey.getType());
      final CacheValue cacheValue = cacheStrategy.get(cacheKey);

      // TODO move ETag check in wroManagerFactory
      final String ifNoneMatch = request.getHeader(HttpHeader.IF_NONE_MATCH.toString());

      // enclose etag value in quotes to be compliant with the RFC
      final String etagValue = String.format("\"%s\"", cacheValue.getHash());

      if (etagValue != null && etagValue.equals(ifNoneMatch)) {
        LOG.debug("ETag hash detected: {}. Sending {} status code", etagValue, HttpServletResponse.SC_NOT_MODIFIED);
        response.setStatus(HttpServletResponse.SC_NOT_MODIFIED);
        // because we cannot return null, return a stream containing nothing.
        // TODO close output stream?
        return;
      }
      /**
       * Set contentType before actual content is written, solves <br/>
       * <a href="http://code.google.com/p/wro4j/issues/detail?id=341">issue341</a>
       */
      response.setContentType(cacheKey.getType().getContentType() + "; charset=" + configuration.getEncoding());
      // set ETag header
      response.setHeader(HttpHeader.ETAG.toString(), etagValue);

      os = response.getOutputStream();
      if (cacheValue.getRawContent() != null) {
        // use gziped response if supported & Set content length based on gzip flag
        if (isGzipAllowed()) {
          response.setContentLength(cacheValue.getGzippedContent().length);
          // add gzip header and gzip response
          response.setHeader(HttpHeader.CONTENT_ENCODING.toString(), "gzip");
          response.setHeader("Vary", "Accept-Encoding");
          IOUtils.write(cacheValue.getGzippedContent(), os);
        } else {
          //using getRawContent().length() is not the same and can return 2Bytes smaller size.
          response.setContentLength(cacheValue.getRawContent().getBytes(configuration.getEncoding()).length);
          IOUtils.write(cacheValue.getRawContent(), os, configuration.getEncoding());
        }
      }
    } finally {
      if (os != null) {
        IOUtils.closeQuietly(os);
      }
    }
  }
Write to stream the content of the processed resource bundle.