AjaxRequest源码，AJAXRequest是一个方便AJAX开发的通用类，可以方便地进行一些AJAX中需要的操作，从而简化开发步骤，减少重复代码编写量。-AjaxRequest source, AJAXRequest Convenience AJAX development is a generic type, can easily carry out some necessary operations in AJAX, which simplifies the development