PortletContentGenerator.java 文件源码

/**
 * Apply the given cache seconds to the render response
 * @param response current portlet render response
 * @param seconds positive number of seconds into the future that the
 * response should be cacheable for, 0 to prevent caching
 */
protected final void applyCacheSeconds(MimeResponse response, int seconds) {
    if (seconds > 0) {
        cacheForSeconds(response, seconds);
    }
    else if (seconds == 0) {
        preventCaching(response);
    }
    // Leave caching to the portlet configuration otherwise.
}