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  2. github.com/tiangolo/fastapi

    docs/zh/docs/tutorial/request-files.md 

    /// warning | 警告

你可以在一个*路径操作*中声明多个 `File` 和 `Form` 参数，但不能同时声明希望以 JSON 接收的 `Body` 字段，因为此时请求体会使用 `multipart/form-data` 编码，而不是 `application/json`。

这不是 **FastAPI** 的限制，而是 HTTP 协议的一部分。

///

## 可选文件上传 { #optional-file-upload }

你可以通过使用标准类型注解并将 `None` 作为默认值的方式将一个文件参数设为可选:

{* ../../docs_src/request_files/tutorial001_02_an_py310.py hl[9,17] *}

## 带有额外元数据的 `UploadFile` { #uploadfile-with-additional-metadata }
    Created: Sun Apr 05 07:19:11 GMT 2026
    - Last Modified: Fri Mar 20 17:06:37 GMT 2026
    - 6.8K bytes
    - Click Count (0)
  3. github.com/minio/minio

    helm-releases/minio-5.0.3.tgz 

    "minio.fullname" . -}} {{- end -}} {{- end -}} {{/* Determine name for scc role and rolebinding */}} {{- define "minio.sccRoleName" -}} {{- printf "%s-%s" "scc" (include "minio.fullname" .) | trunc 63 | trimSuffix "-" -}} {{- end -}} {{/* Properly format optional additional arguments to MinIO binary */}} {{- define "minio.extraArgs" -}} {{- range .Values.extraArgs -}} {{ " " }}{{ . }} {{- end -}} {{- end -}} {{/* Return the proper Docker Image Registry Secret Names */}} {{- define "minio.imagePullSecrets"...
    Created: Sun Apr 05 19:28:12 GMT 2026
    - Last Modified: Mon Dec 19 08:53:02 GMT 2022
    - 20.3K bytes
    - Click Count (0)
  4. github.com/minio/minio

    helm-releases/minio-5.0.4.tgz 

    "minio.fullname" . -}} {{- end -}} {{- end -}} {{/* Determine name for scc role and rolebinding */}} {{- define "minio.sccRoleName" -}} {{- printf "%s-%s" "scc" (include "minio.fullname" .) | trunc 63 | trimSuffix "-" -}} {{- end -}} {{/* Properly format optional additional arguments to MinIO binary */}} {{- define "minio.extraArgs" -}} {{- range .Values.extraArgs -}} {{ " " }}{{ . }} {{- end -}} {{- end -}} {{/* Return the proper Docker Image Registry Secret Names */}} {{- define "minio.imagePullSecrets"...
    Created: Sun Apr 05 19:28:12 GMT 2026
    - Last Modified: Fri Dec 23 20:29:40 GMT 2022
    - 20.3K bytes
    - Click Count (0)
  5. github.com/minio/minio

    helm-releases/minio-5.0.5.tgz 

    "minio.fullname" . -}} {{- end -}} {{- end -}} {{/* Determine name for scc role and rolebinding */}} {{- define "minio.sccRoleName" -}} {{- printf "%s-%s" "scc" (include "minio.fullname" .) | trunc 63 | trimSuffix "-" -}} {{- end -}} {{/* Properly format optional additional arguments to MinIO binary */}} {{- define "minio.extraArgs" -}} {{- range .Values.extraArgs -}} {{ " " }}{{ . }} {{- end -}} {{- end -}} {{/* Return the proper Docker Image Registry Secret Names */}} {{- define "minio.imagePullSecrets"...
    Created: Sun Apr 05 19:28:12 GMT 2026
    - Last Modified: Fri Feb 03 20:54:02 GMT 2023
    - 20.3K bytes
    - Click Count (0)
  6. github.com/minio/minio

    helm-releases/minio-5.0.14.tgz 

    "minio.fullname" . -}} {{- end -}} {{- end -}} {{/* Determine name for scc role and rolebinding */}} {{- define "minio.sccRoleName" -}} {{- printf "%s-%s" "scc" (include "minio.fullname" .) | trunc 63 | trimSuffix "-" -}} {{- end -}} {{/* Properly format optional additional arguments to MinIO binary */}} {{- define "minio.extraArgs" -}} {{- range .Values.extraArgs -}} {{ " " }}{{ . }} {{- end -}} {{- end -}} {{/* Return the proper Docker Image Registry Secret Names */}} {{- define "minio.imagePullSecrets"...
    Created: Sun Apr 05 19:28:12 GMT 2026
    - Last Modified: Sat Sep 30 20:46:10 GMT 2023
    - 20.6K bytes
    - Click Count (0)
  7. github.com/minio/minio

    helm-releases/minio-5.0.15.tgz 

    "minio.fullname" . -}} {{- end -}} {{- end -}} {{/* Determine name for scc role and rolebinding */}} {{- define "minio.sccRoleName" -}} {{- printf "%s-%s" "scc" (include "minio.fullname" .) | trunc 63 | trimSuffix "-" -}} {{- end -}} {{/* Properly format optional additional arguments to MinIO binary */}} {{- define "minio.extraArgs" -}} {{- range .Values.extraArgs -}} {{ " " }}{{ . }} {{- end -}} {{- end -}} {{/* Return the proper Docker Image Registry Secret Names */}} {{- define "minio.imagePullSecrets"...
    Created: Sun Apr 05 19:28:12 GMT 2026
    - Last Modified: Fri Jan 12 18:18:57 GMT 2024
    - 20.8K bytes
    - Click Count (0)
  8. github.com/minio/minio

    helm-releases/minio-4.0.10.tgz 

    "minio.fullname" . -}} {{- end -}} {{- end -}} {{/* Determine name for scc role and rolebinding */}} {{- define "minio.sccRoleName" -}} {{- printf "%s-%s" "scc" (include "minio.fullname" .) | trunc 63 | trimSuffix "-" -}} {{- end -}} {{/* Properly format optional additional arguments to MinIO binary */}} {{- define "minio.extraArgs" -}} {{- range .Values.extraArgs -}} {{ " " }}{{ . }} {{- end -}} {{- end -}} {{/* Return the proper Docker Image Registry Secret Names */}} {{- define "minio.imagePullSecrets"...
    Created: Sun Apr 05 19:28:12 GMT 2026
    - Last Modified: Thu Aug 04 16:09:22 GMT 2022
    - 19.2K bytes
    - Click Count (0)
  9. github.com/minio/minio

    helm-releases/minio-4.0.14.tgz 

    "minio.fullname" . -}} {{- end -}} {{- end -}} {{/* Determine name for scc role and rolebinding */}} {{- define "minio.sccRoleName" -}} {{- printf "%s-%s" "scc" (include "minio.fullname" .) | trunc 63 | trimSuffix "-" -}} {{- end -}} {{/* Properly format optional additional arguments to MinIO binary */}} {{- define "minio.extraArgs" -}} {{- range .Values.extraArgs -}} {{ " " }}{{ . }} {{- end -}} {{- end -}} {{/* Return the proper Docker Image Registry Secret Names */}} {{- define "minio.imagePullSecrets"...
    Created: Sun Apr 05 19:28:12 GMT 2026
    - Last Modified: Mon Sep 05 01:06:49 GMT 2022
    - 19.6K bytes
    - Click Count (0)
  10. github.com/minio/minio

    helm-releases/minio-4.0.7.tgz 

    "minio.fullname" . -}} {{- end -}} {{- end -}} {{/* Determine name for scc role and rolebinding */}} {{- define "minio.sccRoleName" -}} {{- printf "%s-%s" "scc" (include "minio.fullname" .) | trunc 63 | trimSuffix "-" -}} {{- end -}} {{/* Properly format optional additional arguments to MinIO binary */}} {{- define "minio.extraArgs" -}} {{- range .Values.extraArgs -}} {{ " " }}{{ . }} {{- end -}} {{- end -}} {{/* Return the proper Docker Image Registry Secret Names */}} {{- define "minio.imagePullSecrets"...
    Created: Sun Apr 05 19:28:12 GMT 2026
    - Last Modified: Thu Jul 28 03:54:38 GMT 2022
    - 18.6K bytes
    - Click Count (0)
  11. github.com/minio/minio

    helm-releases/minio-4.0.15.tgz 

    "minio.fullname" . -}} {{- end -}} {{- end -}} {{/* Determine name for scc role and rolebinding */}} {{- define "minio.sccRoleName" -}} {{- printf "%s-%s" "scc" (include "minio.fullname" .) | trunc 63 | trimSuffix "-" -}} {{- end -}} {{/* Properly format optional additional arguments to MinIO binary */}} {{- define "minio.extraArgs" -}} {{- range .Values.extraArgs -}} {{ " " }}{{ . }} {{- end -}} {{- end -}} {{/* Return the proper Docker Image Registry Secret Names */}} {{- define "minio.imagePullSecrets"...
    Created: Sun Apr 05 19:28:12 GMT 2026
    - Last Modified: Wed Sep 21 11:07:01 GMT 2022
    - 20K bytes
    - Click Count (0)
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