{* ../../docs_src/response_model/tutorial001_01_py310.py hl[16,21] *}

由於這會在 Rust 端發生，效能會比用一般的 Python 與 `JSONResponse` 類別來完成好得多。

當使用 `response_model` 或回傳型別時，FastAPI 不會使用 `jsonable_encoder` 來轉換資料（那會較慢），也不會使用 `JSONResponse` 類別。

相反地，它會取用用回應模型（或回傳型別）透過 Pydantic 產生的 JSON 位元組，並直接回傳具備正確 JSON 媒體型別（`application/json`）的 `Response`。

## 注意事項 { #notes }

Bir sonraki bölümde, password hashing ve <abbr title="JSON Web Tokens">JWT</abbr> token’ları ile gerçekten güvenli bir implementasyon göreceksiniz.

Ama şimdilik ihtiyacımız olan spesifik detaylara odaklanalım.

///

{* ../../docs_src/security/tutorial003_an_py310.py hl[87] *}

/// tip | İpucu

Spesifikasyona göre, bu örnekteki gibi `access_token` ve `token_type` içeren bir JSON döndürmelisiniz.

            logAsText(entry); // Fallback to text
        } finally {
            returnStringBuilder(json);
        }
    }

    private void buildJsonEntry(StringBuilder json, AuditEntry entry) {
        json.append("{");
        json.append("\"timestamp\":\"").append(escapeJson(entry.timestamp.toString())).append("\",");

## Преобразование любых данных к формату, совместимому с JSON { #convert-any-data-to-json-compatible }

Чтобы преобразовать любые данные к формату, совместимому с JSON, прочитайте документацию: [Руководство — JSON-совместимый кодировщик](../tutorial/encoder.md).

## Метаданные OpenAPI — Документация { #openapi-metadata-docs }

    assert response.status_code == 200, response.text
    assert response.json() == {"width": 3, "length": 4, "area": 12}


@pytest.mark.parametrize("client", [True, False], indirect=True)
def test_openapi_schema(client: TestClient):
    response = client.get("/openapi.json")
    assert response.status_code == 200, response.text
    assert response.json() == snapshot(
        {
            "openapi": "3.1.0",

    return benchmark(do_request)


def _bench_post_json(
    benchmark, client: TestClient, path: str, json: dict[str, Any]
) -> tuple[int, bytes]:
    warmup = client.post(path, json=json)
    assert warmup.status_code == 200

    def do_request() -> tuple[int, bytes]:
        response = client.post(path, json=json)
        return response.status_code, response.content

    return benchmark(do_request)

        openapi_url="/openapi.json",
        title="Test",
        init_oauth={"appName": xss_payload},
    )
    body = html.body.decode()

    assert "</script><script>" not in body
    assert "\\u003c/script\\u003e\\u003cscript\\u003e" in body


def test_swagger_ui_parameters_html_chars_are_escaped():
    html = get_swagger_ui_html(
        openapi_url="/openapi.json",
        title="Test",

## Stream JSON Lines

To stream JSON Lines, declare the return type and use `yield` to return the data.

```python
@app.get("/items/stream")
async def stream_items() -> AsyncIterable[Item]:
    for item in items:
        yield item
```

## Server-Sent Events (SSE)

To stream Server-Sent Events, use `response_class=EventSourceResponse` and `yield` items from the endpoint.

def test_main():
    response = client.get("/app")
    assert response.status_code == 200
    assert response.json() == {"message": "Hello World", "root_path": "/api/v1"}


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

    /**
     * Extracts a string value from JSON response using Jackson parser.
     *
     * @param json the JSON response
     * @param key the key to extract
     * @return the extracted string value
     */
    protected String extractJsonString(final String json, final String key) {
        try {
            final String cleanJson = stripCodeFences(json);