add

src/pages/system/newOrder/newOrderList/index.vue

         })
       })
 
+      _that = this
       Promise.all(ps).then((its = []) => {
-        this.printList.concat(its.filter(x => x))
-        console.log(this.printList)
+        _that.printList.concat(its.filter(x => x))
+        console.log(_that.printList)
       })
     },
     open () {