https请求跨域问题

今天用阿里云的h5页面写ajax请求本地后台，发现请求失败， 存在跨域问题，于是在方法体前面加上下面的代码就可以访问@RequestMapping(value="/h5GetDataInfo")public void h5GetArticleInfo(HttpServletRequest request,HttpServletResponse response) throws IOException{         response.setHeader("Access-Control-Allow-Origin", "*");   response.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS,DELETE,PUT");  response.setCharacterEncoding("UTF-8"); request.setCharacterEncoding("UTF-8");         response.getWriter().write("返回数据");}