var ua = navigator.userAgent.toLowerCase(); var Android = String(ua.match(/android/i)) == "android"; var iPad = String(ua.match(/ipad/i)) == "ipad"; var iPhone = String(ua.match(/iphone/i)) == "iphone"; var url = window.locat…
在看Spring中HttpServlet的Service方法时,对于GET请求,代码逻辑如下: if (method.equals(METHOD_GET)) { long lastModified = getLastModified(req); if (lastModified == -1) { // servlet doesn't support if-modified-since, no reason // to go through further expensive logic doGe…