更新task

dev-device/device-task/src/main/java/com/tykj/dev/device/task/service/impl/TaskServiceImpl.java

@@ -20,6 +20,7 @@ import com.tykj.dev.misc.utils.ResultUtil;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.data.jpa.domain.Specification;
 import org.springframework.stereotype.Service;
+import org.springframework.util.CollectionUtils;
 import org.springframework.web.bind.annotation.ExceptionHandler;
 
 import javax.persistence.Transient;