点击右侧控制台的Network栏；
点击要领取的优惠券；
点击client.action?functionId=newBabelAwardCollection的链接
找到key=后面的字符串和roleId=后面的字符串，填到下面的链接中即可。
https://api.m.jd.com/client.action?functionId=newBabelAwardCollection&body={"activityId":"Td9ZPozfNhETwV4p2x1dasdfssd","from":"H5node","scene":"1","args":"key=******,roleId=******"}&client=wh5&clientVersion=1.0.0&area=&callback=jsonp2
