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v0.1.16
${ noResults }
tiangolo.fastapi/docs/zh/docs/tutorial/request-forms-and-files.md
1.1 KiB
1.1 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 "说明"
接收上传文件或表单数据,要预先安装 <a href="https://andrew-d.github.io/python-multipart/" class="external-link" target="_blank">`python-multipart`</a>。
例如,`pip install python-multipart`。
导入 File 与 Form
{!../../../docs_src/request_forms_and_files/tutorial001.py!}
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.py!}
文件和表单字段作为表单数据上传与接收。
声明文件可以使用 bytes 或 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。