沙箱登录：https://openhome.alipay.com/platform/appDaily.htm
沙箱环境使用说明：https://doc.open.alipay.com/doc2/detail.htm?treeId=200&articleId=105311&docType=1
如何使用沙箱环境：https://support.open.alipay.com/support/hotProblemDetail.htm?spm=a219a.7386793.0.0.uS5uZ6&id=251932&tagId=100248
当面付产品介绍：https://doc.open.alipay.com/docs/doc.htm?spm=a219a.7629140.0.0.hV5Clx&treeId=193&articleId=105072&docType=1
扫码支付接入指引：https://doc.open.alipay.com/docs/doc.htm?spm=a219a.7629140.0.0.Ia6Wqy&treeId=193&articleId=106078&docType=1
当面付快速接入：https://doc.open.alipay.com/docs/doc.htm?spm=a219a.7629140.0.0.bROnXf&treeId=193&articleId=105170&docType=1
当面付接入必读：https://doc.open.alipay.com/docs/doc.htm?spm=a219a.7629140.0.0.hV5Clx&treeId=193&articleId=105322&docType=1
当面付进阶功能：https://doc.open.alipay.com/docs/doc.htm?spm=a219a.7629140.0.0.YFmkxI&treeId=193&articleId=105190&docType=1
当面付异步通知-仅用于扫码支付：https://doc.open.alipay.com/docs/doc.htm?spm=a219a.7629140.0.0.BykVSR&treeId=193&articleId=103296&docType=1
当面付SDK&DEMO：https://support.open.alipay.com/docs/doc.htm?spm=a219a.7386797.0.0.k0rwWc&treeId=193&articleId=105201&docType=1
服务端SDK：https://doc.open.alipay.com/doc2/detail?treeId=54&articleId=103419&docType=1
生成RSA密钥：https://doc.open.alipay.com/docs/doc.htm?treeId=291&articleId=105971&docType=1
线上创建应用说明：https://doc.open.alipay.com/doc2/detail.htm?treeId=200&articleId=105310&docType=1#s0