## 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 hl[8] *}

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

	srcDataDir := latestMeta.DataDir
	dstDataDir := latestMeta.DataDir
	if latestMeta.XLV1 {
		dstDataDir = migrateDataDir
	}

	var inlineBuffers []*bytes.Buffer
	if !latestMeta.Deleted && !latestMeta.IsRemote() {
		if latestMeta.InlineData() {
			inlineBuffers = make([]*bytes.Buffer, len(outDatedDisks))
		}

		erasureInfo := latestMeta.Erasure
		for partIndex := 0; partIndex < len(latestMeta.Parts); partIndex++ {

//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package main

import (
	"bytes"
	"context"
	"crypto/sha256"
	"flag"
	"fmt"
	"hash"
	"io"
	"log"
	"net/url"
	"os"
	"strings"
	"sync"
	"time"

	"github.com/minio/minio-go/v7"

{* ../../docs_src/request_forms_and_files/tutorial001_an_py39.py hl[10:12] *}

The files and form fields will be uploaded as form data and you will receive the files and form fields.

And you can declare some of the files as `bytes` and some as `UploadFile`.

/// warning

`secrets.compare_digest()` 需要仅包含 ASCII 字符（英语字符）的 `bytes` 或 `str`，这意味着它不适用于像`á`一样的字符，如 `Sebastián`。

为了解决这个问题，我们首先将 `username` 和 `password` 转换为使用 UTF-8 编码的 `bytes` 。

然后我们可以使用 `secrets.compare_digest()` 来确保 `credentials.username` 是 `"stanleyjobson"`，且 `credentials.password` 是`"swordfish"`。

	var buffer []byte
	switch size := data.Size(); {
	case size == 0:
		buffer = make([]byte, 1) // Allocate at least a byte to reach EOF
	case size >= fi.Erasure.BlockSize || size == -1:
		if int64(globalBytePoolCap.Load().Width()) < fi.Erasure.BlockSize {
			buffer = make([]byte, fi.Erasure.BlockSize, 2*fi.Erasure.BlockSize)
		} else {

Die Datei- und Formularfelder werden als Formulardaten hochgeladen, und Sie erhalten diese Dateien und Formularfelder.

Und Sie können einige der Dateien als `bytes` und einige als `UploadFile` deklarieren.

/// warning | Achtung

	# Extract head and tail of file
	$(docker exec resiliency-minio$NODE-1 /bin/sh -c "cat $DIR/test-bucket/initial-data/$FILE/$UUID/part.1 | head --bytes 32 > /tmp/head")
	$(docker exec resiliency-minio$NODE-1 /bin/sh -c "cat $DIR/test-bucket/initial-data/$FILE/$UUID/part.1 | tail --bytes $TAIL_SIZE > /tmp/tail")

	# Corrupt the part by writing head twice followed by tail

// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package disk

import (
	"errors"
	"fmt"
	"syscall"
)

// GetInfo returns total and free bytes available in a directory, e.g. `/`.
func GetInfo(path string, _ bool) (info Info, err error) {
	s := syscall.Statfs_t{}
	err = syscall.Statfs(path, &s)
	if err != nil {
		return Info{}, err
	}

				}
				drive := pool.Endpoints[i*setDriveCount+j]
				fmtBytes, err := json.Marshal(newFormat)
				if err != nil {
					//nolint:gocritic
					log.Fatalf("failed to marshal format.json for %s: %v", drive.String(), err)
				}
				fmtJSON := filepath.Join(drive.Host, drive.Path, minioMetaBucket, "format.json")
				embedFileInZip(fmtZipW, fmtJSON, fmtBytes, 0o600)
			}
		}
	}