修改代码

src/main/java/com/ruoyi/task/domain/api/ITaskDomain.java

@@ -59,4 +59,12 @@ public interface ITaskDomain {
      * @return 任务列表
      */
     List<Task> getTaskByPlanId(Long planId);
+
+    /**
+     * 查询指定无人机 actualStartTime 离现在最近的任务
+     *
+     * @param uavId 无人机ID
+     * @return 任务领域模型
+     */
+    Task getCurrentTaskByUavId(String uavId);
 }

src/main/java/com/ruoyi/task/domain/impl/TaskDomainImpl.java

@@ -86,4 +86,10 @@ public class TaskDomainImpl implements ITaskDomain {
                 .map(TaskConvert::toModel)
                 .collect(Collectors.toList());
     }
+
+    @Override
+    public Task getCurrentTaskByUavId(String uavId) {
+        TaskInfoEntity entity = taskInfoMapper.selectCurrentTaskByUavId(uavId);
+        return TaskConvert.toModel(entity);
+    }
 }

src/main/java/com/ruoyi/task/mapper/TaskInfoMapper.java

@@ -57,4 +57,12 @@ public interface TaskInfoMapper {
      * @return 影响行数
      */
     int deleteTaskInfoByIds(Long[] ids);
+
+    /**
+     * 查询指定无人机 actualStartTime 离现在最近的任务
+     *
+     * @param uavId 无人机ID
+     * @return 任务信息
+     */
+    TaskInfoEntity selectCurrentTaskByUavId(String uavId);
 }

src/main/java/com/ruoyi/task/service/impl/TaskServiceImpl.java

@@ -117,34 +117,8 @@ public class TaskServiceImpl implements ITaskService {
 
     @Override
     public TaskDTO getCurrentTaskByUavId(String uavId) {
-        // 创建Task对象作为查询条件
-        Task task = new Task();
-        task.setUavId(uavId);
-        
-        List<Task> tasks = taskDomain.getTaskList(task);
-
-        // 只取状态为RUNNING的任务
-        tasks = tasks.stream()
-                .filter(t -> t.getStatus() == StatusEnum.RUNNING)
-                .collect(java.util.stream.Collectors.toList());
-        
-        // 按照实际执行时间降序排序，取最新的一条
-        if (!tasks.isEmpty()) {
-            tasks.sort((t1, t2) -> {
-                if (t1.getActualStartTime() == null && t2.getActualStartTime() == null) {
-                    return 0;
-                } else if (t1.getActualStartTime() == null) {
-                    return 1;
-                } else if (t2.getActualStartTime() == null) {
-                    return -1;
-                } else {
-                    return t2.getActualStartTime().compareTo(t1.getActualStartTime());
-                }
-            });
-            return TaskDTOConvert.toDTO(tasks.get(0));
-        }
-        
-        return null;
+        Task task = taskDomain.getCurrentTaskByUavId(uavId);
+        return TaskDTOConvert.toDTO(task);
     }
 //
 //    @Override

src/main/resources/mapper/task/TaskInfoMapper.xml

@@ -146,4 +146,12 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
         </foreach>
     </delete>
 
+    <select id="selectCurrentTaskByUavId" parameterType="String" resultMap="TaskInfoResult">
+        <include refid="selectTaskInfoVo"/>
+        where uav_id = #{uavId}
+        and actual_start_time is not null
+        order by abs(timestampdiff(second, actual_start_time, now()))
+        limit 1
+    </select>
+
 </mapper>