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。

jeecg-boot/jeecg-boot-module/jeecg-module-xslmes/src/main/java/org/jeecg/modules/xslmes/controller/MesXslCustomerController.java

@@ -13,15 +13,25 @@ import org.jeecg.common.api.vo.Result;
 import org.jeecg.common.aspect.annotation.AutoLog;
 import org.jeecg.common.system.base.controller.JeecgController;
 import org.jeecg.common.system.query.QueryGenerator;
+import org.jeecg.common.util.oConvertUtils;
 import org.jeecg.modules.xslmes.constant.MesXslCustomerBizStatus;
 import org.jeecg.modules.xslmes.entity.MesXslCustomer;
 import org.jeecg.modules.xslmes.service.IMesXslCustomerService;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.bind.annotation.*;
+import org.springframework.web.multipart.MultipartFile;
+import org.springframework.web.multipart.MultipartHttpServletRequest;
 import org.springframework.web.servlet.ModelAndView;
+import org.jeecgframework.poi.excel.ExcelImportUtil;
+import org.jeecgframework.poi.excel.entity.ImportParams;
 
+import java.io.IOException;
 import java.util.Arrays;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Map;
 import java.util.Objects;
+import java.util.Set;
 
 /**
  * MES 客户管理
@@ -53,6 +63,14 @@ public class MesXslCustomerController extends JeecgController<MesXslCustomer, IM
     @RequiresPermissions("xslmes:mes_xsl_customer:add")
     @PostMapping(value = "/add")
     public Result<String> add(@RequestBody MesXslCustomer mesXslCustomer) {
+        if (oConvertUtils.isEmpty(mesXslCustomer.getCustomerCode())) {
+            return Result.error("客户编码不能为空");
+        }
+        String customerCode = mesXslCustomer.getCustomerCode().trim();
+        mesXslCustomer.setCustomerCode(customerCode);
+        if (mesXslCustomerService.existsSameCustomerCode(customerCode, null)) {
+            return Result.error("客户编码已存在，不允许重复");
+        }
         // 新增默认启用（0）；空白或未传时写入启用，并与 iz_enable 对齐
         String st = mesXslCustomer.getStatus();
         if (st != null) {
@@ -72,6 +90,17 @@ public class MesXslCustomerController extends JeecgController<MesXslCustomer, IM
     @RequiresPermissions("xslmes:mes_xsl_customer:edit")
     @RequestMapping(value = "/edit", method = {RequestMethod.PUT, RequestMethod.POST})
     public Result<String> edit(@RequestBody MesXslCustomer mesXslCustomer) {
+        if (oConvertUtils.isEmpty(mesXslCustomer.getId())) {
+            return Result.error("主键不能为空");
+        }
+        if (oConvertUtils.isEmpty(mesXslCustomer.getCustomerCode())) {
+            return Result.error("客户编码不能为空");
+        }
+        String customerCode = mesXslCustomer.getCustomerCode().trim();
+        mesXslCustomer.setCustomerCode(customerCode);
+        if (mesXslCustomerService.existsSameCustomerCode(customerCode, mesXslCustomer.getId())) {
+            return Result.error("客户编码已存在，不允许重复");
+        }
         if (mesXslCustomer.getStatus() != null) {
             String s = mesXslCustomer.getStatus().trim();
             mesXslCustomer.setStatus(s.isEmpty() ? null : s);
@@ -130,6 +159,20 @@ public class MesXslCustomerController extends JeecgController<MesXslCustomer, IM
         return Result.OK("批量删除成功!");
     }
 
+    @Operation(summary = "校验客户编码是否重复（同租户，dataId 为编辑时当前主键）")
+    @GetMapping(value = "/checkCustomerCode")
+    public Result<String> checkCustomerCode(
+            @RequestParam(name = "customerCode", required = true) String customerCode,
+            @RequestParam(name = "dataId", required = false) String dataId) {
+        if (oConvertUtils.isEmpty(customerCode) || customerCode.trim().isEmpty()) {
+            return Result.OK("该值可用！");
+        }
+        if (mesXslCustomerService.existsSameCustomerCode(customerCode, dataId)) {
+            return Result.error("该客户编码已存在");
+        }
+        return Result.OK("该值可用！");
+    }
+
     @Operation(summary = "MES客户管理-通过id查询")
     @GetMapping(value = "/queryById")
     public Result<MesXslCustomer> queryById(@RequestParam(name = "id", required = true) String id) {
@@ -149,6 +192,75 @@ public class MesXslCustomerController extends JeecgController<MesXslCustomer, IM
     @RequiresPermissions("xslmes:mes_xsl_customer:importExcel")
     @RequestMapping(value = "/importExcel", method = RequestMethod.POST)
     public Result<?> importExcel(HttpServletRequest request, HttpServletResponse response) {
-        return super.importExcel(request, response, MesXslCustomer.class);
+        MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request;
+        Map<String, MultipartFile> fileMap = multipartRequest.getFileMap();
+        for (Map.Entry<String, MultipartFile> ent : fileMap.entrySet()) {
+            MultipartFile file = ent.getValue();
+            ImportParams params = new ImportParams();
+            params.setTitleRows(2);
+            params.setHeadRows(1);
+            params.setNeedSave(true);
+            try {
+                List<MesXslCustomer> list = ExcelImportUtil.importExcel(file.getInputStream(), MesXslCustomer.class, params);
+                if (list == null) {
+                    list = List.of();
+                }
+                // 1）客户编码非空、2）导入文件内不重复、3）与库中同租户数据不重复
+                Set<String> codesInFile = new HashSet<>();
+                for (int i = 0; i < list.size(); i++) {
+                    MesXslCustomer row = list.get(i);
+                    int rowNo = i + 1;
+                    if (row == null) {
+                        return Result.error("文件导入失败：第 " + rowNo + " 条数据无效（空行）");
+                    }
+                    String code = row.getCustomerCode();
+                    if (code != null) {
+                        code = code.trim();
+                    }
+                    if (oConvertUtils.isEmpty(code)) {
+                        return Result.error("文件导入失败：第 " + rowNo + " 条客户编码不能为空");
+                    }
+                    row.setCustomerCode(code);
+                    if (!codesInFile.add(code)) {
+                        return Result.error("文件导入失败：客户编码【" + code + "】在导入文件中重复");
+                    }
+                    if (mesXslCustomerService.existsSameCustomerCode(code, null)) {
+                        return Result.error("文件导入失败：第 " + rowNo + " 条客户编码【" + code + "】已存在，不允许重复");
+                    }
+                }
+                for (MesXslCustomer row : list) {
+                    if (row == null) {
+                        continue;
+                    }
+                    String st = row.getStatus();
+                    if (st != null) {
+                        st = st.trim();
+                        row.setStatus(st.isEmpty() ? null : st);
+                    }
+                    if (row.getStatus() == null || row.getStatus().isEmpty()) {
+                        row.setStatus(MesXslCustomerBizStatus.ENABLED);
+                    }
+                    mesXslCustomerService.syncIzEnableWithStatus(row);
+                }
+                long start = System.currentTimeMillis();
+                mesXslCustomerService.saveBatch(list);
+                log.info("客户Excel导入完成，耗时" + (System.currentTimeMillis() - start) + "ms，行数=" + list.size());
+                return Result.ok("文件导入成功！数据行数：" + list.size());
+            } catch (Exception e) {
+                String msg = e.getMessage();
+                log.error(msg, e);
+                if (msg != null && msg.indexOf("Duplicate entry") >= 0) {
+                    return Result.error("文件导入失败: 存在重复数据（客户编码在系统中需唯一）");
+                }
+                return Result.error("文件导入失败:" + e.getMessage());
+            } finally {
+                try {
+                    file.getInputStream().close();
+                } catch (IOException e) {
+                    log.error(e.getMessage(), e);
+                }
+            }
+        }
+        return Result.error("文件导入失败！");
     }
 }

jeecg-boot/jeecg-boot-module/jeecg-module-xslmes/src/main/java/org/jeecg/modules/xslmes/entity/MesXslCustomer.java

@@ -27,7 +27,7 @@ public class MesXslCustomer extends JeecgEntity implements Serializable {
     private static final long serialVersionUID = 1L;
 
     @Excel(name = "客户编码", width = 20)
-    @Schema(description = "客户编码")
+    @Schema(description = "客户编码（同租户内唯一，不可重复）")
     private String customerCode;
 
     @Excel(name = "客户名称", width = 28)

jeecg-boot/jeecg-boot-module/jeecg-module-xslmes/src/main/java/org/jeecg/modules/xslmes/service/IMesXslCustomerService.java

@@ -12,4 +12,9 @@ public interface IMesXslCustomerService extends IService<MesXslCustomer> {
      * 按业务状态同步 izEnable：停用（字典值 1）为 0，其余为 1。删除仅 del_flag，与 status 无关。
      */
     void syncIzEnableWithStatus(MesXslCustomer entity);
+
+    /**
+     * 同租户下是否已存在相同客户编码（编辑时传 excludeId 排除自身；依赖多租户 SQL 只查当前租户）
+     */
+    boolean existsSameCustomerCode(String customerCode, String excludeId);
 }

jeecg-boot/jeecg-boot-module/jeecg-module-xslmes/src/main/java/org/jeecg/modules/xslmes/service/impl/MesXslCustomerServiceImpl.java

@@ -1,6 +1,7 @@
 package org.jeecg.modules.xslmes.service.impl;
 
 import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
+import org.apache.commons.lang3.StringUtils;
 import org.jeecg.modules.xslmes.constant.MesXslCustomerBizStatus;
 import org.jeecg.modules.xslmes.entity.MesXslCustomer;
 import org.jeecg.modules.xslmes.mapper.MesXslCustomerMapper;
@@ -29,4 +30,16 @@ public class MesXslCustomerServiceImpl extends ServiceImpl<MesXslCustomerMapper,
             entity.setIzEnable(1);
         }
     }
+
+    @Override
+    public boolean existsSameCustomerCode(String customerCode, String excludeId) {
+        if (StringUtils.isBlank(customerCode)) {
+            return false;
+        }
+        String code = customerCode.trim();
+        return this.lambdaQuery()
+                .eq(MesXslCustomer::getCustomerCode, code)
+                .ne(StringUtils.isNotBlank(excludeId), MesXslCustomer::getId, excludeId)
+                .count() > 0L;
+    }
 }