从Stripe退款后，修改订单状态，添加退款记录

src/main/java/com/ai/da/mapper/primary/entity/PaymentInfo.java

@@ -22,6 +22,8 @@ public class PaymentInfo extends BaseEntity{
      *  paid and liquidated means the refund request has been executed.
      *  expired means the request has been rejected.
      *  wait means the request is still under processing.
+     * -------------------------------------------------
+     *  退款：Partial refund 部分退款; Refunded 全部退款
      */
     private String tradeState;//交易状态
 

src/main/java/com/ai/da/mapper/primary/entity/RefundInfo.java

@@ -13,11 +13,14 @@ public class RefundInfo extends BaseEntity{
 
     private String refundId;//支付系统退款单号(微信)
 
+    // 退款必定对应一次具体的收费款项
+    private String chargeId;
+
 //    private Integer totalFee;//原订单金额(分)
     private Float totalFee;//原订单金额(分)
 
 //    private Integer refund;//退款金额(分)
-    private Float refund;//退款金额(分)
+    private Float refund;//退款金额(元)
 
     private String reason;//退款原因