/** * Prepare a request,including setting the encoding and locale. * * @param request The request * @param response The response */ public void prepare(HttpServletRequest request,HttpServletResponse response) { String encoding = null; if (defaultEncoding != null) { encoding = defaultEncoding; } // check for Ajax request to use UTF-8 encoding strictly http://www.w3.org/TR/XMLHttpRequest/#the-send-method <strong><span style="font-size:18px;">if ("XMLHttpRequest".equals(request.getHeader("X-Requested-With"))) { encoding = "UTF-8"; }</span></strong> Locale locale = null; if (defaultLocale != null) { locale = LocalizedTextUtil.localeFromString(defaultLocale,request.getLocale()); } if (encoding != null) { applyEncoding(request,encoding); } if (locale != null) { response.setLocale(locale); } if (paramsWorkaroundEnabled) { request.getParameter("foo"); // simply read any parameter (existing or not) to "prime" the request } }
注:request.getHeader("X-Requested-With") (request.getHeader中传递的参数,不区分大小写的)
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