单据下载格式问题

src/main/java/com/glxp/mipsdl/res/ucloud/UPurchaseinQueryResponse.java

@@ -1,8 +1,9 @@
 package com.glxp.mipsdl.res.ucloud;
 
+import java.io.Serializable;
 import java.util.List;
 
-public class UPurchaseinQueryResponse {
+public class UPurchaseinQueryResponse implements Serializable {
 
 
     /**
@@ -505,7 +506,7 @@ public class UPurchaseinQueryResponse {
         }
     }
 
-    public static class ChildrenvoBean {
+    public static class ChildrenvoBean implements Serializable {
         /**
          * bbarcodeclose : false
          * bonroadflag : false