fix: 修复异步导入方法的阻塞调用问题

## 问题描述
Controller层使用了future.get()阻塞调用,导致异步导入失去意义

## 修复内容
1. 修改ICcdiEmployeeService接口:将返回类型从CompletableFuture<ImportResultVO>改为String
2. 修改CcdiEmployeeServiceImpl:importEmployeeAsync方法立即返回taskId
3. 修改CcdiEmployeeController:移除future.get()调用,直接使用返回的taskId
4. 移除不需要的CompletableFuture导入

## 技术细节
- Service方法保持@Async注解,在独立线程池中执行
- Controller立即返回taskId给前端,不等待导入完成
- 前端可通过/importStatus/{taskId}接口查询导入进度

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

ruoyi-ccdi/src/main/java/com/ruoyi/ccdi/controller/CcdiEmployeeController.java

@@ -28,7 +28,6 @@ import org.springframework.web.bind.annotation.*;
 import org.springframework.web.multipart.MultipartFile;
 
 import java.util.List;
-import java.util.concurrent.CompletableFuture;
 
 /**
  * 员工信息Controller
@@ -137,11 +136,14 @@ public class CcdiEmployeeController extends BaseController {
             return error("至少需要一条数据");
         }
 
-        // 异步导入
+        // 异步导入,立即返回taskId
-        CompletableFuture<ImportResultVO> future = employeeService.importEmployeeAsync(list, updateSupport);
+        String taskId = employeeService.importEmployeeAsync(list, updateSupport);
 
-        // 立即返回taskId
+        // 构建返回结果
-        ImportResultVO result = future.get();
+        ImportResultVO result = new ImportResultVO();
+        result.setTaskId(taskId);
+        result.setStatus("PROCESSING");
+        result.setMessage("导入任务已提交,正在后台处理");
 
         return success("导入任务已提交,正在后台处理", result);
     }

ruoyi-ccdi/src/main/java/com/ruoyi/ccdi/service/ICcdiEmployeeService.java

@@ -11,7 +11,6 @@ import com.ruoyi.ccdi.domain.vo.ImportResultVO;
 import com.ruoyi.ccdi.domain.vo.ImportStatusVO;
 
 import java.util.List;
-import java.util.concurrent.CompletableFuture;
 
 /**
  * 员工信息 服务层
@@ -92,9 +91,9 @@ public interface ICcdiEmployeeService {
      *
      * @param excelList        Excel数据列表
      * @param isUpdateSupport  是否更新已存在的数据
-     * @return CompletableFuture包含导入结果
+     * @return 任务ID
      */
-    CompletableFuture<ImportResultVO> importEmployeeAsync(List<CcdiEmployeeExcel> excelList, Boolean isUpdateSupport);
+    String importEmployeeAsync(List<CcdiEmployeeExcel> excelList, Boolean isUpdateSupport);
 
     /**
      * 查询导入状态

ruoyi-ccdi/src/main/java/com/ruoyi/ccdi/service/impl/CcdiEmployeeServiceImpl.java

@@ -25,7 +25,6 @@ import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
 import java.util.*;
-import java.util.concurrent.CompletableFuture;
 import java.util.concurrent.TimeUnit;
 import java.util.stream.Collectors;
 
@@ -232,12 +231,12 @@ public class CcdiEmployeeServiceImpl implements ICcdiEmployeeService {
      *
      * @param excelList        Excel数据列表
      * @param isUpdateSupport  是否更新已存在的数据
-     * @return CompletableFuture包含导入结果
+     * @return 任务ID
      */
     @Override
     @Async("importExecutor")
     @Transactional
-    public CompletableFuture<ImportResultVO> importEmployeeAsync(List<CcdiEmployeeExcel> excelList, Boolean isUpdateSupport) {
+    public String importEmployeeAsync(List<CcdiEmployeeExcel> excelList, Boolean isUpdateSupport) {
         String taskId = UUID.randomUUID().toString();
         long startTime = System.currentTimeMillis();
 
@@ -264,12 +263,6 @@ public class CcdiEmployeeServiceImpl implements ICcdiEmployeeService {
             String finalStatus = result.getFailureCount() == 0 ? "SUCCESS" : "PARTIAL_SUCCESS";
             updateImportStatus(taskId, finalStatus, result, startTime);
 
-            ImportResultVO resultVO = new ImportResultVO();
-            resultVO.setTaskId(taskId);
-            resultVO.setStatus(finalStatus);
-            resultVO.setMessage("导入任务已提交");
-
-            return CompletableFuture.completedFuture(resultVO);
         } catch (Exception e) {
             // 处理异常
             Map<String, Object> errorData = new HashMap<>();
@@ -277,14 +270,10 @@ public class CcdiEmployeeServiceImpl implements ICcdiEmployeeService {
             errorData.put("message", "导入失败: " + e.getMessage());
             errorData.put("endTime", System.currentTimeMillis());
             redisTemplate.opsForHash().putAll(statusKey, errorData);
-
-            ImportResultVO resultVO = new ImportResultVO();
-            resultVO.setTaskId(taskId);
-            resultVO.setStatus("FAILED");
-            resultVO.setMessage("导入失败: " + e.getMessage());
-
-            return CompletableFuture.completedFuture(resultVO);
         }
+
+        // 立即返回taskId,让调用者可以查询状态
+        return taskId;
     }
 
     /**