1. 去除部门编码为空时，默认使用 id 作为 code 进行映射的逻辑

zt-module-system/zt-module-system-server/src/main/java/com/zt/plat/module/system/service/integration/iwork/impl/IWorkSyncProcessorImpl.java

@@ -513,7 +513,7 @@ public class IWorkSyncProcessorImpl implements IWorkSyncProcessor {
         req.setIsGroup(Boolean.FALSE);
         req.setDeptSource(DeptSourceEnum.IWORK.getSource());
         req.setExternalSystemCode(ExternalPlatformEnum.IWORK.getCode());
-        req.setExternalDeptCode(StrUtil.blankToDefault(trimToNull(data.getSubcompanycode()), String.valueOf(data.getId())));
+        req.setExternalDeptCode(trimToNull(data.getSubcompanycode()));
         req.setExternalDeptName(data.getSubcompanyname());
         return req;
     }
@@ -533,7 +533,7 @@ public class IWorkSyncProcessorImpl implements IWorkSyncProcessor {
         req.setIsGroup(Boolean.FALSE);
         req.setDeptSource(DeptSourceEnum.IWORK.getSource());
         req.setExternalSystemCode(ExternalPlatformEnum.IWORK.getCode());
-        req.setExternalDeptCode(StrUtil.blankToDefault(trimToNull(data.getDepartmentcode()), String.valueOf(data.getId())));
+        req.setExternalDeptCode(trimToNull(data.getDepartmentcode()));
         req.setExternalDeptName(data.getDepartmentname());
         return req;
     }

zt-module-system/zt-module-system-server/src/test/java/com/zt/plat/module/system/service/integration/iwork/impl/IWorkSyncServiceImplTest.java

@@ -0,0 +1,62 @@
+package com.zt.plat.module.system.service.integration.iwork.impl;
+
+import com.zt.plat.framework.test.core.ut.BaseMockitoUnitTest;
+import com.zt.plat.module.system.controller.admin.integration.iwork.vo.IWorkFullSyncReqVO;
+import com.zt.plat.module.system.controller.admin.integration.iwork.vo.IWorkHrDepartmentPageRespVO;
+import com.zt.plat.module.system.enums.integration.IWorkSyncEntityTypeEnum;
+import com.zt.plat.module.system.service.dept.DeptService;
+import com.zt.plat.module.system.service.integration.iwork.IWorkOrgRestService;
+import com.zt.plat.module.system.service.integration.iwork.IWorkSyncProcessor;
+import org.junit.jupiter.api.Test;
+import org.mockito.InjectMocks;
+import org.mockito.Mock;
+import org.mockito.stubbing.Answer;
+
+import java.util.List;
+
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.anyInt;
+import static org.mockito.ArgumentMatchers.eq;
+import static org.mockito.Mockito.*;
+
+class IWorkSyncServiceImplTest extends BaseMockitoUnitTest {
+
+    @InjectMocks
+    private IWorkSyncServiceImpl syncService;
+
+    @Mock
+    private IWorkOrgRestService orgRestService;
+    @Mock
+    private IWorkSyncProcessor syncProcessor;
+    @Mock
+    private DeptService deptService;
+
+    @Test
+    void shouldBackfillCodesWhenPlaceholdersExistAfterFullSync() {
+        IWorkFullSyncReqVO reqVO = new IWorkFullSyncReqVO();
+        reqVO.setPageSize(1);
+        reqVO.setMaxPages(1);
+
+        IWorkHrDepartmentPageRespVO pageResp = new IWorkHrDepartmentPageRespVO();
+        pageResp.setSuccess(true);
+        IWorkHrDepartmentPageRespVO.Department dept = new IWorkHrDepartmentPageRespVO.Department();
+        dept.setId(1);
+        pageResp.setDataList(List.of(dept));
+        when(orgRestService.listDepartments(any())).thenReturn(pageResp);
+
+        // 在部门同步时标记占位 ID
+        doAnswer((Answer<IWorkSyncProcessor.BatchResult>) invocation -> {
+            IWorkSyncProcessor.DeptSyncContext context = invocation.getArgument(2);
+            if (context != null) {
+                context.getPlaceholderDeptIds().add(500L);
+            }
+            return IWorkSyncProcessor.BatchResult.empty();
+        }).when(syncProcessor).syncDepartments(any(), any(), any(IWorkSyncProcessor.DeptSyncContext.class));
+
+        when(syncProcessor.flushDeptPending(any(), any())).thenReturn(IWorkSyncProcessor.BatchResult.empty());
+
+        syncService.fullSyncDepartments(reqVO);
+
+        verify(deptService, times(1)).backfillMissingCodesWithoutEvent(argThat(set -> set.contains(500L)));
+    }
+}