spring MVC開發中,使用ajax發送數據的時候,直接getGrouponPrice(HttpServletRequest request)使用request就能夠獲取到數據了,可是在使用表單提交的時候,使用request獲取不到數據,後來使用@RequestParam註解配合map才獲取到了數據。ajax
@RequestParam A) 經常使用來處理簡單類型的綁定,經過Request.getParameter() 獲取的String可直接轉換爲簡單類型的狀況( String--> 簡單類型的轉換操做由ConversionService配置的轉換器來完成);由於使用request.getParameter()方式獲取參數,因此能夠處理get 方式中queryString的值,也能夠處理post方式中 body data的值; B)用來處理Content-Type: 爲 application/x-www-form-urlencoded編碼的內容,提交方式GET、POST; C) 該註解有兩個屬性: value、required; value用來指定要傳入值的id名稱,required用來指示參數是否必須綁定;spring
@RequestMapping(value="/saveInfo",method=RequestMethod.POST) public ModelAndView saveInfo(@RequestParam Map<String,Object> params) throws URIException { String cityName = params.get("input_cityName").toString(); String carId = params.get("input_carId").toString(); String ids = params.get("input_ids").toString(); String name = params.get("input_name").toString(); String phone = params.get("input_phone").toString(); String price = params.get("input_price").toString(); String channel = params.get("channel").toString(); String appsku = params.get("appsku").toString(); }
值得一提的是,使用下面的方式也獲取不到數據:app
@RequestParam(value = "input_cityName", required = true) String cityName, @RequestParam(value = "input_carId", required = true) String carId, @RequestParam(value = "input_ids", required = true) String ids, @RequestParam(value = "input_name", required = true) String name, @RequestParam(value = "input_phone", required = true) String phone, @RequestParam(value = "input_price", required = true) String price, @RequestParam(value = "channel", required = true) String channel, @RequestParam(value = "appsku", required = true) String appsku @RequestParam("input_cityName") String cityName, @RequestParam("input_carId") String carId, @RequestParam("input_ids") String ids, @RequestParam("input_name") String name, @RequestParam("input_phone") String phone, @RequestParam("input_price") String price, @RequestParam("channel") String channel, @RequestParam("appsku") String appsku