## OpenAPI 客户端生成

有许多工具可以从**OpenAPI**生成客户端。

一个常见的工具是 <a href="https://openapi-generator.tech/" class="external-link" target="_blank">OpenAPI Generator</a>。

如果您正在开发**前端**，一个非常有趣的替代方案是 <a href="https://github.com/hey-api/openapi-ts" class="external-link" target="_blank">openapi-ts</a>。

## 生成一个 TypeScript 前端客户端

让我们从一个简单的 FastAPI 应用开始：

{* ../../docs_src/generate_clients/tutorial001_py39.py hl[7:9,12:13,16:17,21] *}

    json_schema = field_mapping[(field, override_mode or field.mode)]
    if "$ref" not in json_schema:
        # TODO remove when deprecating Pydantic v1
        # Ref: https://github.com/pydantic/pydantic/blob/d61792cc42c80b13b23e3ffa74bc37ec7c77f7d1/pydantic/schema.py#L207
        json_schema["title"] = field.field_info.title or field_alias.title().replace(
            "_", " "
        )

   *
   * NOTE: The tests for this behavior (FinalizableReferenceQueueClassLoaderUnloadingTest) fail
   * strangely when run in JDK 9. We are considering this a known issue. Please see
   * https://github.com/google/guava/issues/3086 for more information.
   */

  private static final Logger logger = Logger.getLogger(FinalizableReferenceQueue.class.getName());

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

package cmd

import (
	"fmt"
	"sync"
	"sync/atomic"
	"time"

	"github.com/rcrowley/go-metrics"
)

//go:generate msgp -file $GOFILE

const (
	// beta is the weight used to calculate exponential moving average
	beta = 0.1 // Number of averages considered = 1/(1-beta)
)

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

package lock

import (
	"encoding/xml"
	"errors"
	"fmt"
	"net/http"
	"reflect"
	"strings"
	"testing"
	"time"

	xhttp "github.com/minio/minio/internal/http"
)

func TestParseMode(t *testing.T) {
	testCases := []struct {
		value        string
		expectedMode RetMode
	}{
		{
			value:        "governance",

<img src="/img/tutorial/body/image05.png">

/// tip | 豆知識

<a href="https://www.jetbrains.com/pycharm/" class="external-link" target="_blank">PyCharm</a>エディタを使用している場合は、<a href="https://github.com/koxudaxi/pydantic-pycharm-plugin/" class="external-link" target="_blank">Pydantic PyCharm Plugin</a>が使用可能です。

以下のエディターサポートが強化されます:

* 自動補完
* 型チェック
* リファクタリング
* 検索
* インスペクション

///

而且，**FastAPI** 还提供了一些工具，在不影响灵活、稳定和安全的前提下，尽可能地简化安全机制。

**FastAPI** 还支持以相对简单的方式，使用 OAuth2 等安全、标准的协议。

	"net/http"
	"net/url"
	"reflect"
	"regexp"
	"runtime"
	"strings"
	"sync"
	"testing"
	"time"

	"github.com/dustin/go-humanize"
	jwtgo "github.com/golang-jwt/jwt/v4"
	"github.com/minio/minio-go/v7/pkg/set"
	"github.com/minio/minio-go/v7/pkg/signer"
	xhttp "github.com/minio/minio/internal/http"
	"github.com/minio/pkg/v3/policy"
)

// API suite container common to both ErasureSD and Erasure.
type TestSuiteCommon struct {

   * returned either this request, or the request upon which this request was derived with
   * [newBuilder].
   *
   * @suppress this method breaks Dokka! https://github.com/Kotlin/dokka/issues/2473
   */
  fun tag(): Any? = tag<Any>()

  /**
   * Returns the tag attached with [type] as a key, or null if no tag is attached with that
   * key.
   */

// Code generated by github.com/tinylib/msgp DO NOT EDIT.

package cmd

import (
	"github.com/tinylib/msgp/msgp"
)

// DecodeMsg implements msgp.Decodable
func (z *ActiveWorkerStat) DecodeMsg(dc *msgp.Reader) (err error) {
	var field []byte
	_ = field
	var zb0001 uint32
	zb0001, err = dc.ReadMapHeader()
	if err != nil {
		err = msgp.WrapError(err)
		return
	}
	for zb0001 > 0 {
		zb0001--
		field, err = dc.ReadMapKeyPtr()