TASK: 批量生成获取任务序号

src/main/java/com/ai/da/controller/ProjectController.java

@@ -146,7 +146,7 @@ public class ProjectController {
 
     @GetMapping("/getNextSequence")
     public Response<Integer> getNextSequence(){
-        return Response.success(projectService.getNextSequence());
+        return Response.success(projectService.getOrCreateSequence());
     }
 
 

src/main/java/com/ai/da/mapper/primary/entity/BatchTaskSequence.java

@@ -12,5 +12,7 @@ public class BatchTaskSequence extends BaseEntity{
 
     private Long accountId;
 
-    private Integer currentSequence;
+    private Integer nextSeq;
+
+    private Integer lockedSeq;
 }

src/main/java/com/ai/da/service/ProjectService.java

@@ -28,5 +28,7 @@ public interface ProjectService extends IService<Project> {
 
     List<Project> getByProjectNameLike(String projectName);
 
-    Integer getNextSequence();
+    Integer getOrCreateSequence();
+
+    void clearLockedSequence(Long accountId);
 }

src/main/java/com/ai/da/service/impl/DesignServiceImpl.java

@@ -1943,6 +1943,9 @@ public class DesignServiceImpl extends ServiceImpl<DesignMapper, Design> impleme
             cloudTask.setStatus(0);
             cloudTask.setAccountId(userInfo.getId());
             cloudTaskMapper.insert(cloudTask);
+            // 解除锁后可以获取下一个序号
+            projectService.clearLockedSequence(userHolder.getId());
+
             UserLikeGroup userLikeGroup = userLikeGroupService.getByProjectId(projectId);
             Long userLikeGroupId = null;
             ToProductImageRecord toProductImageRecord = new ToProductImageRecord();
@@ -2123,6 +2126,8 @@ public class DesignServiceImpl extends ServiceImpl<DesignMapper, Design> impleme
             cloudTask.setStatus(0);
             cloudTask.setAccountId(userInfo.getId());
             cloudTaskMapper.insert(cloudTask);
+            // 解除锁后可以获取下一个序号
+            projectService.clearLockedSequence(userHolder.getId());
 
             UserLikeGroup userLikeGroup = userLikeGroupService.getByProjectId(projectId);
             Long userLikeGroupId = null;
@@ -2288,6 +2293,8 @@ public class DesignServiceImpl extends ServiceImpl<DesignMapper, Design> impleme
             cloudTask.setUpdateTime(now);
             cloudTask.setStatus(0);
             cloudTaskMapper.insert(cloudTask);
+            // 解除锁后可以获取下一个序号
+            projectService.clearLockedSequence(userHolder.getId());
 
             List<PoseTransformBatchDTO> poseTransformList = cloudTaskDTO.getPoseTransform();
             if (CollectionUtil.isNotEmpty(poseTransformList)) {
@@ -2545,6 +2552,8 @@ public class DesignServiceImpl extends ServiceImpl<DesignMapper, Design> impleme
         cloudTask.setStatus(0);
         cloudTask.setAccountId(userInfo.getId());
         cloudTaskMapper.insert(cloudTask);
+        // 解除锁后可以获取下一个序号
+        projectService.clearLockedSequence(userHolder.getId());
         return taskId;
     }
 

src/main/java/com/ai/da/service/impl/ProjectServiceImpl.java

@@ -6,6 +6,7 @@ import com.ai.da.mapper.primary.*;
 import com.ai.da.mapper.primary.entity.*;
 import com.ai.da.service.*;
 import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
+import com.baomidou.mybatisplus.core.toolkit.Wrappers;
 import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.dao.DuplicateKeyException;
@@ -44,30 +45,51 @@ public class ProjectServiceImpl extends ServiceImpl<ProjectMapper, Project> impl
     }
 
     @Resource
-    private BatchTaskSequenceMapper batchTaskSequenceMapper;
+    private BatchTaskSequenceMapper sequenceMapper;
+
+    /**
+     * 获取或创建用户的任务序号
+     * @return 当前可用的序号
+     */
+    @Transactional
+    public synchronized Integer getOrCreateSequence() {
 
-    @Transactional(rollbackFor = Exception.class)
-    public Integer getNextSequence() {
         Long accountId = UserContext.getUserHolder().getId();
-        // 1. 尝试插入新记录（如果用户不存在）
+        // 1. 检查是否已有锁定序号
-        BatchTaskSequence newCounter = new BatchTaskSequence();
+        BatchTaskSequence sequence = sequenceMapper.selectOne(
-        newCounter.setAccountId(accountId);
+                Wrappers.<BatchTaskSequence>lambdaQuery()
-        newCounter.setCurrentSequence(1);
+                        .eq(BatchTaskSequence::getAccountId, accountId));
-        newCounter.setCreateTime(LocalDateTime.now());
 
-        try {
+        if (sequence != null && sequence.getLockedSeq() != null) {
-            batchTaskSequenceMapper.insert(newCounter);
+            return sequence.getLockedSeq();
+        }
+
+        // 2. 没有锁定序号，创建新记录或获取新序号
+        if (sequence == null) {
+            sequence = new BatchTaskSequence();
+            sequence.setAccountId(accountId);
+            sequence.setNextSeq(2); // 第一次返回1，下次从2开始
+            sequence.setLockedSeq(1);
+            sequenceMapper.insert(sequence);
             return 1;
-        } catch (DuplicateKeyException e) {
+        } else {
-            // 2. 用户已存在，执行递增操作
+            Integer seq = sequence.getNextSeq();
-            batchTaskSequenceMapper.incrementSequence(accountId);
+            sequence.setLockedSeq(seq);
-            Integer sequence = batchTaskSequenceMapper.getLastInsertId();
+            sequence.setNextSeq(seq + 1);
-
+            sequenceMapper.updateById(sequence);
-            // 3. 验证获取的序号
+            return seq;
-            if (sequence == null) {
-                throw new RuntimeException("获取序号失败");
-            }
-            return sequence;
         }
     }
+
+    /**
+     * 清除锁定序号状态（用于确认使用或取消操作）
+     * @param accountId 用户ID
+     */
+    @Transactional
+    public void clearLockedSequence(Long accountId) {
+        sequenceMapper.update(null,
+                Wrappers.<BatchTaskSequence>lambdaUpdate()
+                        .set(BatchTaskSequence::getLockedSeq, null)
+                        .eq(BatchTaskSequence::getAccountId, accountId));
+    }
 }