ajax跨域问题

ajax跨域问题在开发过程中会经常遇到，我们可以通过将$.ajax()的参数'dataType'设置成'jsonp'或者设置request对象的请求头来解决：

$.ajax({url:url,method: "POST",dataType:'json',data:{id:id},success: function (result) {}});

java代码如下：

@RequestMapping("/queryContentCount.do")@ResponseBodypublic void queryContentCount(HttpServletRequest req, HttpServletResponse resp) throws JSONException, IOException{req.getHeader("Access-Control-Allow-Origin:*");//此处设置String id =req.getParameter("id");if(StringUtils.isNotBlank(id)){resp.setHeader("Access-Control-Allow-Origin", "*");//此处设置resp.setContentType("text/plain;charset=UTF-8");PrintWriter out = resp.getWriter();out.write(id);}}

拿走不谢；