package com.cloud.common.utils;

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

import javax.servlet.http.HttpServletRequest;

/**
 * @author lp
 */
public class RequestUtil {
    public static final String ACCESS_TOKEN = "access_token";
    public static final String AUTH = "Authorization";
    public static final String BEARER = "Bearer";
    public static String getTokenByParam() {
        String token = null;
        HttpServletRequest request=getRequest();
        if (request.getParameter(ACCESS_TOKEN) != null) {
            token = request.getParameter(ACCESS_TOKEN).toString();
        }
        // 头部的Authorization值以Bearer开头
        String auth = request.getHeader(AUTH);
        if (auth != null) {
            if (auth.startsWith(BEARER) || auth.startsWith(BEARER.toLowerCase())) {
                token = auth .substring(7,auth.length());
            }
        }
        return token;
    }
    public static HttpServletRequest getRequest(){
        return ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest();
    }
}