如何获取HttpServletRequest，通过静态方法获取request和response

对于spring项目（springmvc，springboot），通过静态的工具类获取request和response会非常方面。方法如下

package com.wyf.test.test;
import org.springframework.web.context.request.ServletRequestAttributes;
import org.springframework.web.context.request.RequestContextHolder;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class HttpUtil {
	public static HttpServletRequest getRequest() {
		return ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest();
	}
	
	public static HttpServletResponse getResponse() {
		return ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getResponse();
	}
}