增强客户编码管理功能，新增客户编码唯一性校验，确保同租户内客户编码不重复。更新相关API和前端表单验证逻辑，优化Excel导入功能以处理客户编码的有效性和唯一性。添加数据库约束以维护数据完整性。

jeecgboot-vue3/src/views/xslmes/mesXslCustomer/MesXslCustomer.api.ts

@@ -5,6 +5,7 @@ const { createConfirm } = useMessage();
 
 enum Api {
   list = '/xslmes/mesXslCustomer/list',
+  checkCustomerCode = '/xslmes/mesXslCustomer/checkCustomerCode',
   queryById = '/xslmes/mesXslCustomer/queryById',
   save = '/xslmes/mesXslCustomer/add',
   edit = '/xslmes/mesXslCustomer/edit',
@@ -22,6 +23,10 @@ export const list = (params) => defHttp.get({ url: Api.list, params });
 
 export const queryById = (params: { id: string }) => defHttp.get({ url: Api.queryById, params });
 
+/** 客户编码唯一性校验（同租户；编辑传 dataId） */
+export const checkCustomerCode = (params: { customerCode: string; dataId?: string }) =>
+  defHttp.get({ url: Api.checkCustomerCode, params });
+
 export const deleteOne = (params, handleSuccess) => {
   return defHttp.delete({ url: Api.deleteOne, params }, { joinParamsToUrl: true }).then(() => {
     handleSuccess();

jeecgboot-vue3/src/views/xslmes/mesXslCustomer/MesXslCustomer.data.ts

@@ -1,4 +1,5 @@
 import { BasicColumn, FormSchema } from '/@/components/Table';
+import { checkCustomerCode } from './MesXslCustomer.api';
 
 export const columns: BasicColumn[] = [
   { title: 'ID', align: 'center', dataIndex: 'id', width: 280, ellipsis: true, defaultHidden: true },
@@ -48,7 +49,26 @@ export const formSchema: FormSchema[] = [
     field: 'customerCode',
     required: true,
     component: 'Input',
-    componentProps: { placeholder: '请输入客户编码' },
+    componentProps: { placeholder: '同租户内唯一，不可与已有客户重复' },
+    dynamicRules: ({ model }) => [
+      { required: true, message: '请输入客户编码' },
+      {
+        validator: async (_rule, value) => {
+          const v = value == null ? '' : String(value).trim();
+          if (!v) {
+            return Promise.resolve();
+          }
+          try {
+            await checkCustomerCode({ customerCode: v, dataId: model?.id });
+            return Promise.resolve();
+          } catch (e: any) {
+            const msg = e?.response?.data?.message || e?.message || '该客户编码已存在';
+            return Promise.reject(msg);
+          }
+        },
+        trigger: 'blur',
+      },
+    ],
   },
   {
     label: '客户名称',