后端考勤：增加课次学员考勤名册查询

RuoYi-Vue/ruoyi-admin/src/main/java/com/ruoyi/web/controller/train/AttendanceController.java

@@ -3,6 +3,7 @@ package com.ruoyi.web.controller.train;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.security.access.prepost.PreAuthorize;
 import org.springframework.validation.annotation.Validated;
+import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PathVariable;
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.PutMapping;
@@ -70,4 +71,14 @@ public class AttendanceController extends BaseController
         attendanceAppService.adjust(checkinId, dto, SecurityUtils.getUsername());
         return success();
     }
+
+    /**
+     * 查询课次学员考勤名册 (纯只读，供培训管理员点名签到)。
+     */
+    @PreAuthorize("@ss.hasPermi('train:attendance:list')")
+    @GetMapping("/lessons/{lessonId}/roster")
+    public AjaxResult getLessonRoster(@PathVariable Long lessonId)
+    {
+        return success(attendanceAppService.getLessonRoster(lessonId));
+    }
 }