【方式一】通过注解获取【推荐】
public class Hello {
@Autowired
Private HttpServletRequest request;
}
【方式二】通过监听获取
1、在web.xml中配置一个监听
<listener>
<listener-class>
org.springframework.web.context.request.RequestContextListener
</listener-class>
</listener>
2、调用API获取
HttpServletRequest request = ((ServletRequestAttributes)RequestContextHolder.getRequestAttributes()).getRequest();
【方式三】通过参数中传递【不推荐】
public String hello(HttpServletRequest request)
【方式四】如果有Struts
HttpServletRequest request = ServletActionContext.getRequest();