xml代码优化

weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/result/WxPayRefundResult.java

@@ -119,7 +119,7 @@ public class WxPayRefundResult extends BaseWxPayResult implements Serializable {
   /**
    * 组装生成退款代金券信息.
    */
-  public void composeRefundCoupons() {
+  private void composeRefundCoupons() {
     List<WxPayRefundCouponInfo> coupons = Lists.newArrayList();
     Integer refundCount = this.getCouponRefundCount();
     if (refundCount == null) {
@@ -139,4 +139,10 @@ public class WxPayRefundResult extends BaseWxPayResult implements Serializable {
 
     this.setRefundCoupons(coupons);
   }
+
+  public static WxPayRefundResult fromXML(String xml) {
+    WxPayRefundResult result = BaseWxPayResult.fromXML(xml, WxPayRefundResult.class);
+    result.composeRefundCoupons();
+    return result;
+  }
 }