1、stripe

2、游客到试用用户身份转换

src/main/java/com/ai/da/service/StripeService.java

@@ -0,0 +1,11 @@
+package com.ai.da.service;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+public interface StripeService {
+
+    String pay(Integer quantity);
+
+    Boolean notify(HttpServletRequest request);
+}