springMVC接受json数据

    import org.springframework.web.bind.annotation.RequestBody;    @ApiOperation(value = "protocol", notes = "转发协议")    @RequestMapping(value = "/protocol", method = RequestMethod.POST)    public void protocol(HttpServletResponse response, HttpServletRequest request, @RequestBody  Map<String, String> map)map.get("json的key");这样就能取出json数据