diff --git a/src/main/java/com/mosquito/project/permission/ApprovalFlowService.java b/src/main/java/com/mosquito/project/permission/ApprovalFlowService.java
index 764948f..977db20 100644
--- a/src/main/java/com/mosquito/project/permission/ApprovalFlowService.java
+++ b/src/main/java/com/mosquito/project/permission/ApprovalFlowService.java
@@ -3,9 +3,8 @@ package com.mosquito.project.permission;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
-import java.time.LocalDateTime;
+import java.util.Collections;
 import java.util.List;
-import java.util.Optional;
 
 /**
  * 审批流服务
@@ -31,9 +30,8 @@ public class ApprovalFlowService {
     @Transactional
     public Long submitApproval(Long flowId, String bizType, String bizId, String title,
                                 Long applicantId, String applicantName, String applyReason) {
-        // 创建审批记录
-        Long recordId = recordId++; // TODO: 实际创建记录
-        return recordId;
+        // TODO: 实现审批申请提交逻辑
+        return System.currentTimeMillis();
     }
 
     /**
@@ -42,7 +40,7 @@ public class ApprovalFlowService {
     @Transactional
     public boolean handleApproval(Long recordId, String action, Long operatorId,
                                   String operatorName, String comment) {
-        // 处理审批逻辑
+        // TODO: 实现审批处理逻辑
         return true;
     }
 
@@ -50,34 +48,34 @@ public class ApprovalFlowService {
      * 获取待审批列表
      */
     public List<Object> getPendingApprovals(Long userId) {
-        return List.of();
+        return Collections.emptyList();
     }
 
     /**
      * 获取已审批列表
      */
     public List<Object> getApprovedList(Long userId) {
-        return List.of();
+        return Collections.emptyList();
     }
 
     /**
      * 获取我发起的审批
      */
     public List<Object> getMyApplications(Long userId) {
-        return List.of();
+        return Collections.emptyList();
     }
 
     /**
      * 获取审批记录详情
      */
-    public Optional<Object> getRecordById(Long recordId) {
-        return Optional.empty();
+    public Object getRecordById(Long recordId) {
+        return null;
     }
 
     /**
      * 获取审批历史
      */
     public List<Object> getApprovalHistory(Long recordId) {
-        return List.of();
+        return Collections.emptyList();
     }
 }