返回为空，映射报错 修改

myproject/src/main/java/com/myproject/bean/update/StoragePos.java

@@ -59,9 +59,12 @@ public class StoragePos extends BaseMongoBean {
     /**
      * 隔口数量
      */
-    private int partitionAmount = 1;
+    private Integer partitionAmount;
 
     public int getPartitionAmount() {
+        if (partitionAmount == null){
+            partitionAmount = 1;
+        }
         return partitionAmount;
     }