在登錄asp.net上檢測到PayPal訂閱取消

Question

我正在構建一個涉及Paypal訂閱的asp.net Web應用程序。 我需要檢查是否可以取消用戶登錄，如果可以，怎么辦？ 我已經看過有關此主題的其他文章，但由於要檢查登錄信息，因此情況有所不同。 我當時在想，也許我可以每晚從Paypal中批量轉儲數據，並進行檢查以在已取消的用戶上設置標記。 不確定執行此操作的最佳方法是..

Answer 1

如果要在登錄到PayPal后檢查用戶是否接受或取消了協議，則可以使用Express Checkout令牌進行檢查。 買方登錄到PayPal帳戶並在響應中查找變量BILLINGAGREEMENTACCEPTEDSTATUS之后，需要在令牌上調用GetExpressCheckoutDetails API。

BILLINGAGREEMENTACCEPTEDSTATUS = 0表示買方在登錄PayPal帳戶后未接受該協議 或未單擊取消 。

BILLINGAGREEMENTACCEPTEDSTATUS = 1，表示在登錄PayPal后點擊“同意並繼續” 。

我已經提供了一些樣本回復。

登錄后拒絕：

NVP Response:
TOKEN=EC-0RC04801KU663840M
**BILLINGAGREEMENTACCEPTEDSTATUS=0**
CHECKOUTSTATUS=PaymentActionNotInitiated
TIMESTAMP=2014-09-14T14:54:43Z
CORRELATIONID=5cc68231a1b35
ACK=Success
VERSION=109.0
BUILD=12786467
EMAIL=XXXXXXXXXXXXXX
PAYERID=XXXXXXXXXXXX
PAYERSTATUS=verified
FIRSTNAME=Eshan Personal Test
LASTNAME=Account
COUNTRYCODE=US
CURRENCYCODE=USD
AMT=0.00
SHIPPINGAMT=0.00
HANDLINGAMT=0.00
TAXAMT=0.00
INSURANCEAMT=0.00
SHIPDISCAMT=0.00
PAYMENTREQUEST_0_CURRENCYCODE=USD
PAYMENTREQUEST_0_AMT=0.00
PAYMENTREQUEST_0_SHIPPINGAMT=0.00
PAYMENTREQUEST_0_HANDLINGAMT=0.00
PAYMENTREQUEST_0_TAXAMT=0.00
PAYMENTREQUEST_0_INSURANCEAMT=0.00
PAYMENTREQUEST_0_SHIPDISCAMT=0.00
PAYMENTREQUEST_0_INSURANCEOPTIONOFFERED=false
PAYMENTREQUEST_0_ADDRESSNORMALIZATIONSTATUS=None
PAYMENTREQUESTINFO_0_ERRORCODE=0 

登錄后接受：

NVP Response:
TOKEN=EC-1EX65013S71914041
PHONENUM=408-767-7151
**BILLINGAGREEMENTACCEPTEDSTATUS=1**
CHECKOUTSTATUS=PaymentActionNotInitiated
TIMESTAMP=2014-09-14T14:56:24Z
CORRELATIONID=aae4de7a4b356
ACK=Success
VERSION=109.0
BUILD=XXXXXXXXXXXXX
PAYERID=XXXXXXXXXXXXXX
PAYERSTATUS=verified
FIRSTNAME=Eshan Personal Test
LASTNAME=Account
COUNTRYCODE=US
SHIPTONAME=Eshan Personal Test Account
SHIPTOSTREET=cxas
SHIPTOSTREET2=asa
SHIPTOCITY=FL
SHIPTOSTATE=FL
SHIPTOZIP=95616
SHIPTOCOUNTRYCODE=US
SHIPTOCOUNTRYNAME=United States
ADDRESSSTATUS=Confirmed
CURRENCYCODE=USD
AMT=0.00
SHIPPINGAMT=0.00
HANDLINGAMT=0.00
TAXAMT=0.00
INSURANCEAMT=0.00
SHIPDISCAMT=0.00
PAYMENTREQUEST_0_CURRENCYCODE=USD
PAYMENTREQUEST_0_AMT=0.00
PAYMENTREQUEST_0_SHIPPINGAMT=0.00
PAYMENTREQUEST_0_HANDLINGAMT=0.00
PAYMENTREQUEST_0_TAXAMT=0.00
PAYMENTREQUEST_0_INSURANCEAMT=0.00
PAYMENTREQUEST_0_SHIPDISCAMT=0.00
PAYMENTREQUEST_0_INSURANCEOPTIONOFFERED=false
PAYMENTREQUEST_0_SHIPTONAME=Eshan Personal Test Account
PAYMENTREQUEST_0_SHIPTOSTREET=cxas
PAYMENTREQUEST_0_SHIPTOSTREET2=asa
PAYMENTREQUEST_0_SHIPTOCITY=FL
PAYMENTREQUEST_0_SHIPTOSTATE=FL
PAYMENTREQUEST_0_SHIPTOZIP=95616
PAYMENTREQUEST_0_SHIPTOCOUNTRYCODE=US
PAYMENTREQUEST_0_SHIPTOCOUNTRYNAME=United States
PAYMENTREQUEST_0_ADDRESSSTATUS=Confirmed
PAYMENTREQUEST_0_ADDRESSNORMALIZATIONSTATUS=None
PAYMENTREQUESTINFO_0_ERRORCODE=0