test三轮完成的版本，并入了国伟的班级模块

api/wl_score_api.py

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+from fastapi import APIRouter, Depends, HTTPException
+from sqlalchemy.orm import Session
+from dao.wl_score_dao import get_score, create_score, update_score, delete_score, list_score_by_stu_id
+from database import get_db
+
+router = APIRouter(tags=["成绩CRUD"])
+
+# 新增成绩
+@router.post("/score/add")
+def api_add_score(stu_id: int, exam_order: int, score: float, db: Session = Depends(get_db)):
+    res = create_score(db, stu_id, exam_order, score)
+    if res is None:
+        raise HTTPException(status_code=400, detail="新增失败：学生不存在或成绩重复")
+    return res
+
+# 查询单条成绩
+@router.get("/score/one")
+def api_get_score(stu_id: int, exam_order: int, db: Session = Depends(get_db)):
+    s = get_score(db, stu_id, exam_order)
+    if not s:
+        raise HTTPException(status_code=404, detail="成绩记录不存在")
+    return s
+
+# 查询某个学生全部成绩
+@router.get("/score/list/{stu_id}")
+def api_list_score(stu_id: int, db: Session = Depends(get_db)):
+    return list_score_by_stu_id(db, stu_id)
+
+# 更新成绩
+@router.put("/score/update")
+def api_update_score(stu_id: int, exam_order: int, new_score: float, db: Session = Depends(get_db)):
+    obj = update_score(db, stu_id, exam_order, new_score)
+    if obj is None:
+        raise HTTPException(status_code=404, detail="更新失败，记录不存在")
+    return obj
+
+# 删除成绩
+@router.delete("/score/del")
+def api_del_score(stu_id: int, exam_order: int, db: Session = Depends(get_db)):
+    ok = delete_score(db, stu_id, exam_order)
+    if not ok:
+        raise HTTPException(status_code=404, detail="删除失败，记录不存在")
+    return {"msg": "删除成功"}