update

@CONTROL/搜索栏/CONTROL-BASE.vue.ftl

@@ -170,7 +170,8 @@ FilterTree,
             Object.assign(data, { query: this.query })
         }  -->
         if(this.filterFields.length > 0) {
-            Object.assign(data, { filter: this.getFilter() })
+            let filter: any = this.getFilter();
+            Object.assign(data, { filter: filter ? JSON.stringify(filter) : null })
         }
         return data;
     }
@@ -187,6 +188,9 @@ FilterTree,
         }
         let ands: any[] = this.transformAnd(this.filterItems);
         this.transformResult(ands, '$and');
+        if(ands.length === 0) {
+            return null;
+        }
         return { '$and': ands };
     }