/**
* Apply the specified HTTP status code to the given response, if possible (that is, if not
* executing within an include request).
*
* @param request current HTTP request
* @param response current HTTP response
* @param statusCode the status code to apply
* @see #determineStatusCode
* @see #setDefaultStatusCode
* @see HttpServletResponse#setStatus
*/
protected void applyStatusCodeIfPossible(
HttpServletRequest request, HttpServletResponse response, int statusCode) {
if (!WebUtils.isIncludeRequest(request)) {
if (logger.isDebugEnabled()) {
logger.debug("Applying HTTP status code " + statusCode);
}
response.setStatus(statusCode);
request.setAttribute(WebUtils.ERROR_STATUS_CODE_ATTRIBUTE, statusCode);
}
}
/**
* Determine whether to use RequestDispatcher's <code>include</code> or <code>forward</code>
* method.
*
* <p>Performs a check whether an include URI attribute is found in the request, indicating an
* include request, and whether the response has already been committed. In both cases, an include
* will be performed, as a forward is not possible anymore.
*
* @param request current HTTP request
* @param response current HTTP response
* @return <code>true</code> for include, <code>false</code> for forward
* @see javax.servlet.RequestDispatcher#forward
* @see javax.servlet.RequestDispatcher#include
* @see javax.servlet.ServletResponse#isCommitted
* @see org.springframework.web.util.WebUtils#isIncludeRequest
*/
protected boolean useInclude(HttpServletRequest request, HttpServletResponse response) {
return (WebUtils.isIncludeRequest(request) || response.isCommitted());
}
