package com.canrd.webmagic.common.utils;

import org.springframework.web.context.ContextLoader;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;


public class RequestContextUtil {

    public static HttpServletRequest getRequest() {
        return getRequestAttributes().getRequest();
    }

    public static HttpServletResponse getResponse() {
        return getRequestAttributes().getResponse();
    }

    public static HttpSession getSession() {
        return getRequest().getSession();
    }

    public static ServletRequestAttributes getRequestAttributes() {
        return ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes());
    }

    public static ServletContext getServletContext() {
        return ContextLoader.getCurrentWebApplicationContext().getServletContext();
    }

}