#### 数据「模式」

「模式」这个术语也可能指的是某些数据比如 JSON 的结构。

在这种情况下，它可以表示 JSON 的属性及其具有的数据类型，等等。

#### OpenAPI 和 JSON Schema

OpenAPI 为你的 API 定义 API 模式。该模式中包含了你的 API 发送和接收的数据的定义（或称为「模式」），这些定义通过 JSON 数据模式标准 **JSON Schema** 所生成。

#### 查看 `openapi.json`

如果你对原始的 OpenAPI 模式长什么样子感到好奇，其实它只是一个自动生成的包含了所有 API 描述的 JSON。

```
{
  "item": "The Foo Wrestlers"
}
```

Mas se o cliente faz uma requisição para `http://example.com/items/bar` (ou seja, um não existente `item_id "bar"`), esse cliente receberá um HTTP status code 404 (o erro "não encontrado" — *not found error*), e uma resposta JSON:

```JSON
{
  "detail": "Item not found"
}
```

/// tip | "Dica"

Функция не возвращает большой `str`, содержащий данные в формате JSON (в виде строки). Она возвращает стандартную структуру данных Python (например, `dict`) со значениями и подзначениями, которые совместимы с JSON.

/// note | "Технические детали"

sleep 30s

nprefix=$(./mc ilm rule list siteb/bucket --json | jq '.config.Rules[0].Filter.And.Prefix' | sed 's/"//g')
ntagName1=$(./mc ilm rule list siteb/bucket --json | jq '.config.Rules[0].Filter.And.Tags[0].Key' | sed 's/"//g')
ntagVal1=$(./mc ilm rule list siteb/bucket --json | jq '.config.Rules[0].Filter.And.Tags[0].Value' | sed 's/"//g')
ntagName2=$(./mc ilm rule list siteb/bucket --json | jq '.config.Rules[0].Filter.And.Tags[1].Key' | sed 's/"//g')

def test_post_no_body_q_bar(client: TestClient):
    response = client.put("/items/5?q=bar", json=None)
    assert response.status_code == 200
    assert response.json() == {"item_id": 5, "q": "bar"}


def test_post_no_body(client: TestClient):
    response = client.put("/items/5", json=None)
    assert response.status_code == 200
    assert response.json() == {"item_id": 5}


def test_post_id_foo(client: TestClient):

    response = client.get(path)
    assert response.status_code == expected_status
    assert response.json() == expected_response


@needs_py310
def test_openapi_schema(client: TestClient):
    response = client.get("/openapi.json")
    assert response.status_code == 200, response.text
    assert response.json() == {
        "openapi": "3.1.0",
        "info": {"title": "FastAPI", "version": "0.1.0"},
        "paths": {

)

// MarshalText encodes the DEK's key ID and ciphertext
// as JSON.
func (d DEK) MarshalText() ([]byte, error) {
	type JSON struct {
		KeyID      string `json:"keyid"`
		Version    uint32 `json:"version,omitempty"`
		Ciphertext []byte `json:"ciphertext"`
	}
	return json.Marshal(JSON{
		KeyID:      d.KeyID,
		Version:    uint32(d.Version),
		Ciphertext: d.Ciphertext,
	})
}

// V33.
type LegacyConfig struct {
	Enabled bool `json:"enabled"`

	// E.g. "ldap.minio.io:636"
	ServerAddr string `json:"serverAddr"`

	// User DN search parameters
	UserDNSearchBaseDistName  string   `json:"userDNSearchBaseDN"`
	UserDNSearchBaseDistNames []string `json:"-"` // Generated field
	UserDNSearchFilter        string   `json:"userDNSearchFilter"`

	// Group search parameters

Es wird also kein großer `str` zurückgegeben, der die Daten im JSON-Format (als String) enthält. Es wird eine Python-Standarddatenstruktur (z. B. ein `dict`) zurückgegeben, mit Werten und Unterwerten, die alle mit JSON kompatibel sind.

/// note | "Hinweis"

def test_main():
    response = client.get("/app")
    assert response.status_code == 200, response.text
    assert response.json() == {"message": "Hello World from main app"}


def test_openapi_schema_sub():
    response = client.get("/subapi/openapi.json")
    assert response.status_code == 200, response.text
    assert response.json() == openapi_schema_sub


def test_sub():