fix(plan): 修复传入空列表时的空指针异常

buhuazhen

2026-03-20 93b5197ed64fbc5b8053b26b7fb528163a9c8502

 src/main/java/com/ruoyi/purchase/service/IPurchaseLedgerService.java

@@ -43,4 +43,6 @@
    String getPurchaseNo();

    AjaxResult importData(MultipartFile file);

    PurchaseLedgerDto getPurchaseByCode(PurchaseLedgerDto purchaseLedgerDto);
}