fix compensate param key

@@ -71,6 +71,10 @@ public class CouponProxyService extends AbsProxyService implements Compensator {
         return result.getCoupons();
     }
 
+    private static final String KEY_UID = "uid",
+            KEY_ORDER_CODE = "orderCode",
+            KEY_COUPONCODES = "couponCodes";
+
     /**
      * 使用优惠券，有补偿功能
      *
@@ -79,8 +83,9 @@ public class CouponProxyService extends AbsProxyService implements Compensator {
      * @param couponCodes
      */
     @TxCompensatable(value = CouponProxyService.class)
-    public void orderUseCoupon(@TxCompensateArgs("uid") int uid, @TxCompensateArgs("orderCode") long orderCode,
-                               @TxCompensateArgs("couponBos") List<String> couponCodes) {
+    public void orderUseCoupon(@TxCompensateArgs(KEY_UID) int uid,
+                               @TxCompensateArgs(KEY_ORDER_CODE) long orderCode,
+                               @TxCompensateArgs(KEY_COUPONCODES) List<String> couponCodes) {
         logger.info("[{}] request to use coupon,couponCodes is {}", orderCode, couponCodes);
         ApiResponse resp = ufoServiceCaller.call("ufo.coupons.use", uid, orderCode, couponCodes);
         Boolean result = getResultFromApiResponse(resp);
@@ -133,9 +138,9 @@ public class CouponProxyService extends AbsProxyService implements Compensator {
         String[] couponCodes = null;
         try {
             JSONObject json = JSON.parseObject(message);
-            uid = json.getIntValue("uid");
-            orderCode = json.getLongValue("orderCode");
-            couponCodes = json.getObject("couponCodes", String[].class);
+            uid = json.getIntValue(KEY_UID);
+            orderCode = json.getLongValue(KEY_ORDER_CODE);
+            couponCodes = json.getObject(KEY_COUPONCODES, String[].class);
         } catch (Exception ex) {
             logger.warn("parse message to json error,message is {}", message, ex);
         }