如何在struts2拦截器中获得request

由struts2原理图可知道,interceptor发生在action调用之前,拦截器的参数就是ActionInvocation(action实例),ActionInvocation里封装了HttpServletRequest,
HttpServletRequest request = (HttpServletRequest) ai.getInvocationContext().get(ServletActionContext.HTTP_REQUEST);即可得到request,当然,也可以得到Cookie[] cookies = request.getCookies();

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