private void setHeaders(RequestContext rc, String fileName, Boolean cache, Map options)
throws Exception {
HttpServletRequest req = rc.getReq();
HttpServletResponse res = rc.getRes();
String characterEncoding = MapUtil.getNestedValue(options, "characterEncoding");
characterEncoding = (characterEncoding != null) ? characterEncoding : "UTF-8";
String contentType = MapUtil.getNestedValue(options, "contentType");
contentType = (contentType != null) ? contentType : servletContext.getMimeType(fileName);
contentType = (contentType != null) ? contentType : FileUtil.getExtraMimeType(fileName);
req.setCharacterEncoding(characterEncoding);
res.setContentType(contentType);
// TODO: needs to support "cache=true"
// --------- Set Cache --------- //
if (cache) {
/*
* NOTE: for now we remove this, in the case of a CSS, we do not know the length, since it is a template
* contentLength = resourceFile.length();
*
* if (contentLength < Integer.MAX_VALUE) { res.setContentLength((int) contentLength); } else {
* res.setHeader("content-length", "" + contentLength); }
*/
// This content will expire in 1 hours.
final int CACHE_DURATION_IN_SECOND = 60 * 60 * 1; // 1 hours
final long CACHE_DURATION_IN_MS = CACHE_DURATION_IN_SECOND * 1000;
long now = System.currentTimeMillis();
res.addHeader("Cache-Control", "max-age=" + CACHE_DURATION_IN_SECOND);
res.addHeader("Cache-Control", "must-revalidate"); // optional
res.setDateHeader("Last-Modified", now);
res.setDateHeader("Expires", now + CACHE_DURATION_IN_MS);
} else {
res.setHeader("Pragma", "No-cache");
res.setHeader("Cache-Control", "no-cache,no-store,max-age=0");
res.setDateHeader("Expires", 1);
}
// --------- Set Cache --------- //
}
/**
* Return the value in the model map (the m.**) with the appropriate type and fall back value.
*
* @param <T>
* @param namePath path deliminated with the ".". Note that the "m." should not be in this
* namePath.
* @param cls The type of the value to be casted to
* @param defaultValue The fall back value
* @return
*/
public <T> T getModelValue(String namePath, Class<T> cls, T defaultValue) {
return MapUtil.getNestedValue(webMap, namePath, cls, defaultValue);
}