那获取用户信息需要获取用户openid ，获取用户openid 只有去授权code去获取accessToken才能得到openid, 那岂不是每天去使用公众号网页授权的用户是有限的？只有2000次？
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- Raw code: Mini Program/Development/Extended/Ride Code/Raw code
- 3、 sample code: Mini Program/Development/Extended/Ride Code/Raw code
- 3、 sample code: Mini Program/Development/Extended/Ride Code/Scan Code Payment
- Scan Code Payment: Mini Program/Development/Extended/Ride Code/Scan Code Payment
- 1、 Request parameters: Mini Program/Development/Extended/Ride Code/Raw code
仔细看这里https://developers.weixin.qq.com/doc/offiaccount/OA_Web_Apps/Wechat_webpage_authorization.html