update 优化默认部门，不允许删除

ruoyi-common/ruoyi-common-core/src/main/java/org/dromara/common/core/constant/SystemConstants.java

@@ -77,4 +77,9 @@ public interface SystemConstants {
      */
     String ROOT_DEPT_ANCESTORS = "0";
 
+    /**
+     * 默认部门 ID
+     */
+    Long DEFAULT_DEPT_ID = 100L;
+
 }

ruoyi-modules/ruoyi-system/src/main/java/org/dromara/system/controller/system/SysDeptController.java

@@ -113,8 +113,8 @@ public class SysDeptController extends BaseController {
     @Log(title = "部门管理", businessType = BusinessType.DELETE)
     @DeleteMapping("/{deptId}")
     public R<Void> remove(@PathVariable Long deptId) {
-        if (StringUtils.equals(SystemConstants.ROOT_DEPT_ANCESTORS, String.valueOf(deptId))) {
-            return R.warn("根部门不允许删除");
+        if (SystemConstants.DEFAULT_DEPT_ID.equals(deptId)) {
+            return R.warn("默认部门,不允许删除");
         }
         if (deptService.hasChildByDeptId(deptId)) {
             return R.warn("存在下级部门,不允许删除");