https://api.weixin.qq.com/sns/oauth2/component/access_token?appid=APPID&code=CODE&grant_type=authorization_code&component_appid=COMPONENT_APPID&component_access_token=COMPONENT_ACCESS_TOKEN
按照官方文档的请求链接及参数有时候可以，有时候返回
{"errcode":40029,"errmsg":"invalid code, rid: 6497f733-7a1103c4-6dfb8ed3"}
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你好，40029 invalid code ，就是指传了无效的js code，code已被使用，此时请开发者自查是否重复使用了同一code或重新获取新的code，再重试下