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v0.1.16
${ noResults }
tiangolo.fastapi/docs/zh/docs/tutorial/request-forms-and-files.md
1.3 KiB
1.3 KiB
请求表单与文件
FastAPI 支持同时使用 File 和 Form 定义文件和表单字段。
/// info | 信息
接收上传的文件和/或表单数据,首先安装 python-multipart。
请先创建并激活一个虚拟环境,然后再安装,例如:
$ pip install python-multipart
///
导入 File 与 Form
{* ../../docs_src/request_forms_and_files/tutorial001_an_py310.py hl[3] *}
定义 File 与 Form 参数
创建文件和表单参数的方式与 Body 和 Query 一样:
{* ../../docs_src/request_forms_and_files/tutorial001_an_py310.py hl[10:12] *}
文件和表单字段作为表单数据上传与接收。
并且你可以将部分文件声明为 bytes,将部分文件声明为 UploadFile。
/// warning | 警告
可在一个路径操作中声明多个 File 与 Form 参数,但不能同时声明要接收 JSON 的 Body 字段。因为此时请求体的编码为 multipart/form-data,不是 application/json。
这不是 FastAPI 的问题,而是 HTTP 协议的规定。
///
小结
在同一个请求中接收数据和文件时,应同时使用 File 和 Form。