<filter>
        <filter-name>shallowEtagHeaderFilter</filter-name>
        <filter-class>org.springframework.web.filter.ShallowEtagHeaderFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>shallowEtagHeaderFilter</filter-name>
        <url-pattern>/myPath</url-pattern>
    </filter-mapping>

@RequestMapping(value = "/order/info", method = RequestMethod.POST)
    @ResponseBody
    public MyResponse getOrderInfo(@RequestBody MyRequest request, WebRequest webRequest){

boolean result = webRequest.checkNotModified(webRequest.getHeader("If-None-Match"))