fix bug

@@ -9,6 +9,9 @@ public class RecallSknInfo implements Serializable{
     private Integer productSkn;
     private String recallType;
 
+    public RecallSknInfo() {
+    }
+
     public RecallSknInfo(Integer productSkn, String recallType) {
         this.productSkn = productSkn;
         this.recallType = recallType;
@@ -22,5 +25,11 @@ public class RecallSknInfo implements Serializable{
         return recallType;
     }
 
+    public void setProductSkn(Integer productSkn) {
+        this.productSkn = productSkn;
+    }
 
+    public void setRecallType(String recallType) {
+        this.recallType = recallType;
+    }
 }