question
Project integration Alipay error: debugging error, please go back to the source of the request and initiate the request again. Error code invalid-app-id Error reason: Invalid ApplD parameter
detailed question
The author operates according to the Alipay sandbox payment fast integration version , and the operation is completed to access the integrated Alipay. The page is as follows
solution
Modify the GATEWAY_URL in AliPayController
to change it from
private static final String GATEWAY_URL = "https://openapi.alipaydev.com/gateway.do";
change into
private static final String GATEWAY_URL = "https://openapi-sandbox.dl.alipaydev.com/gateway.do";
wrong reason
It is caused by the incorrect configuration of the gateway URL in the Alipay sandbox environment. In the author's code, GATEWAY_URL is set to https://openapi.alipaydev.com/gateway.do, which is the gateway URL of Alipay's official environment.
solve the cause
Modify GATEWAY_URL to the gateway URL of the Alipay sandbox environment, ie https://openapi-sandbox.dl.alipaydev.com/gateway.do.
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