人脸
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ZZX9599
33
schema/face_schema.py
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33
schema/face_schema.py
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from datetime import datetime
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from pydantic import BaseModel, Field
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# ------------------------------
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# 请求模型（前端传参校验）
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# ------------------------------
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class FaceCreateRequest(BaseModel):
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"""创建人脸记录请求模型"""
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id: int = Field(..., description="主键ID")
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name: str = Field(None, max_length=255, description="名称")
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eigenvalue: str = Field(None, max_length=255, description="特征")
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class FaceUpdateRequest(BaseModel):
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"""更新人脸记录请求模型"""
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name: str = Field(None, max_length=255, description="名称")
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eigenvalue: str = Field(None, max_length=255, description="特征")
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# ------------------------------
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# 响应模型（后端返回数据）
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# ------------------------------
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class FaceResponse(BaseModel):
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"""人脸记录响应模型"""
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id: int = Field(..., description="主键ID")
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name: str = Field(None, description="名称")
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eigenvalue: str = Field(None, description="特征")
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created_at: datetime = Field(..., description="记录创建时间")
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updated_at: datetime = Field(..., description="记录更新时间")
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# 支持从数据库查询结果转换
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model_config = {"from_attributes": True}
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268
service/face_service.py
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268
service/face_service.py
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from fastapi import APIRouter, Depends, HTTPException
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from mysql.connector import Error as MySQLError
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from ds.db import db
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from schema.face_schema import FaceCreateRequest, FaceUpdateRequest, FaceResponse
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from schema.response_schema import APIResponse
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from middle.auth_middleware import get_current_user
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from schema.user_schema import UserResponse
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# 创建人脸接口路由（前缀 /faces、标签用于 Swagger 分类）
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router = APIRouter(
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prefix="/faces",
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tags=["人脸管理"]
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)
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# ------------------------------
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# 1. 创建人脸记录
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# ------------------------------
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@router.post("", response_model=APIResponse, summary="创建人脸记录")
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async def create_face(
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face: FaceCreateRequest
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):
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"""
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创建人脸记录：
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- 需登录认证
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- 插入新的人脸记录到数据库
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- 返回创建成功信息
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"""
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conn = None
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cursor = None
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try:
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conn = db.get_connection()
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cursor = conn.cursor(dictionary=True)
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# 1. 检查ID是否已存在
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check_query = "SELECT id FROM face WHERE id = %s"
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cursor.execute(check_query, (face.id,))
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existing_face = cursor.fetchone()
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if existing_face:
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raise HTTPException(
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status_code=400,
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detail=f"ID为 {face.id} 的人脸记录已存在"
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)
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# 2. 插入新人脸记录到数据库
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insert_query = """
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INSERT INTO face (id, name, eigenvalue)
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VALUES (%s, %s, %s)
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"""
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cursor.execute(insert_query, (face.id, face.name, face.eigenvalue))
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conn.commit()
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# 3. 查询刚创建的记录并返回
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select_query = "SELECT * FROM face WHERE id = %s"
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cursor.execute(select_query, (face.id,))
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created_face = cursor.fetchone()
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return APIResponse(
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code=201, # 201 表示资源创建成功
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message="人脸记录创建成功",
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data=FaceResponse(**created_face)
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)
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except MySQLError as e:
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if conn:
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conn.rollback()
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raise Exception(f"创建人脸记录失败：{str(e)}") from e
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finally:
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db.close_connection(conn, cursor)
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# ------------------------------
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# 2. 获取单个人脸记录
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# ------------------------------
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@router.get("/{face_id}", response_model=APIResponse, summary="获取单个人脸记录")
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async def get_face(
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face_id: int,
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current_user: UserResponse = Depends(get_current_user) # 需登录认证
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):
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"""
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获取单个人脸记录：
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- 需登录认证
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- 根据ID查询人脸记录
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- 返回查询到的人脸信息
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"""
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conn = None
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cursor = None
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try:
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conn = db.get_connection()
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cursor = conn.cursor(dictionary=True)
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query = "SELECT * FROM face WHERE id = %s"
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cursor.execute(query, (face_id,))
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face = cursor.fetchone()
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if not face:
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raise HTTPException(
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status_code=404,
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detail=f"ID为 {face_id} 的人脸记录不存在"
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)
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return APIResponse(
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code=200,
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message="人脸记录查询成功",
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data=FaceResponse(**face)
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)
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except MySQLError as e:
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raise Exception(f"查询人脸记录失败：{str(e)}") from e
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finally:
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db.close_connection(conn, cursor)
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# ------------------------------
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# 3. 获取所有人脸记录
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# ------------------------------
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@router.get("", response_model=APIResponse, summary="获取所有人脸记录")
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async def get_all_faces(
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):
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"""
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获取所有人脸记录：
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- 需登录认证
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- 查询所有人脸记录（不需要分页）
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- 返回所有人脸信息列表
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"""
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conn = None
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cursor = None
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try:
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conn = db.get_connection()
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cursor = conn.cursor(dictionary=True)
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query = "SELECT * FROM face ORDER BY id"
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cursor.execute(query)
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faces = cursor.fetchall()
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return APIResponse(
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code=200,
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message="所有人脸记录查询成功",
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data=[FaceResponse(**face) for face in faces]
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)
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except MySQLError as e:
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raise Exception(f"查询所有人脸记录失败：{str(e)}") from e
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finally:
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db.close_connection(conn, cursor)
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# ------------------------------
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# 4. 更新人脸记录
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# ------------------------------
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@router.put("/{face_id}", response_model=APIResponse, summary="更新人脸记录")
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async def update_face(
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face_id: int,
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face_update: FaceUpdateRequest,
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current_user: UserResponse = Depends(get_current_user) # 需登录认证
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):
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"""
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更新人脸记录：
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- 需登录认证
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- 根据ID更新人脸记录信息
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- 返回更新后的人脸信息
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"""
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conn = None
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cursor = None
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try:
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conn = db.get_connection()
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cursor = conn.cursor(dictionary=True)
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# 1. 检查记录是否存在
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check_query = "SELECT id FROM face WHERE id = %s"
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cursor.execute(check_query, (face_id,))
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existing_face = cursor.fetchone()
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if not existing_face:
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raise HTTPException(
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status_code=404,
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detail=f"ID为 {face_id} 的人脸记录不存在"
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)
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# 2. 构建更新语句（只更新提供的字段）
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update_fields = []
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params = []
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if face_update.name is not None:
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update_fields.append("name = %s")
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params.append(face_update.name)
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if face_update.eigenvalue is not None:
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update_fields.append("eigenvalue = %s")
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params.append(face_update.eigenvalue)
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if not update_fields:
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raise HTTPException(
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status_code=400,
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detail="至少需要提供一个字段进行更新"
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)
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params.append(face_id) # WHERE条件的参数
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update_query = f"""
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UPDATE face
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SET {', '.join(update_fields)}, updated_at = CURRENT_TIMESTAMP
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WHERE id = %s
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"""
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cursor.execute(update_query, params)
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conn.commit()
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# 3. 查询更新后的记录并返回
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select_query = "SELECT * FROM face WHERE id = %s"
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cursor.execute(select_query, (face_id,))
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updated_face = cursor.fetchone()
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return APIResponse(
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code=200,
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message="人脸记录更新成功",
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data=FaceResponse(**updated_face)
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)
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except MySQLError as e:
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if conn:
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conn.rollback()
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raise Exception(f"更新人脸记录失败：{str(e)}") from e
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finally:
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db.close_connection(conn, cursor)
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# ------------------------------
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# 5. 删除人脸记录
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# ------------------------------
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@router.delete("/{face_id}", response_model=APIResponse, summary="删除人脸记录")
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async def delete_face(
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face_id: int,
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current_user: UserResponse = Depends(get_current_user) # 需登录认证
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):
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"""
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删除人脸记录：
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- 需登录认证
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- 根据ID删除人脸记录
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- 返回删除成功信息
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"""
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conn = None
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cursor = None
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try:
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conn = db.get_connection()
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cursor = conn.cursor(dictionary=True)
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# 1. 检查记录是否存在
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check_query = "SELECT id FROM face WHERE id = %s"
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cursor.execute(check_query, (face_id,))
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existing_face = cursor.fetchone()
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if not existing_face:
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raise HTTPException(
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status_code=404,
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detail=f"ID为 {face_id} 的人脸记录不存在"
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)
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# 2. 执行删除操作
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delete_query = "DELETE FROM face WHERE id = %s"
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cursor.execute(delete_query, (face_id,))
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conn.commit()
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return APIResponse(
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code=200,
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message=f"ID为 {face_id} 的人脸记录删除成功",
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data=None
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)
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except MySQLError as e:
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if conn:
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conn.rollback()
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raise Exception(f"删除人脸记录失败：{str(e)}") from e
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finally:
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db.close_connection(conn, cursor)
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