pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")

oauth2_scheme = OAuth2PasswordBearer(
    tokenUrl="token",
    scopes={"me": "Read information about the current user.", "items": "Read items."},
)

app = FastAPI()


def verify_password(plain_password, hashed_password):
    return pwd_context.verify(plain_password, hashed_password)


def get_password_hash(password):

    name: str


RecursiveSubitemInSubmodel.model_rebuild()
RecursiveItemViaSubmodel.model_rebuild()


@app.get("/items/recursive", response_model=RecursiveItem)
def get_recursive():
    return {"name": "item", "sub_items": [{"name": "subitem", "sub_items": []}]}


@app.get("/items/recursive-submodel", response_model=RecursiveItemViaSubmodel)
def get_recursive_submodel():
    return {
        "name": "item",

		<c:if test="${facetResponse != null}">
			<c:forEach var="fieldData" items="${facetResponse.fieldList}">
				<c:if
					test="${fieldData.name == 'label' && fieldData.valueCountMap.size() > 0}">
					<ul class="list-group mb-2">
						<li class="list-group-item text-uppercase"><la:message
								key="labels.facet_label_title" /></li>
						<c:forEach var="countEntry" items="${fieldData.valueCountMap}">
							<c:if

    from docs_src.templates.tutorial001 import app

    client = TestClient(app)
    response = client.get("/items/foo")
    assert response.status_code == 200, response.text
    assert (
        b'<h1><a href="http://testserver/items/foo">Item ID: foo</a></h1>'
        in response.content
    )
    response = client.get("/static/styles.css")
    assert response.status_code == 200, response.text

</details>

### 检查

使用浏览器访问 <a href="http://127.0.0.1:8000/items/5?q=somequery" class="external-link" target="_blank">http://127.0.0.1:8000/items/5?q=somequery</a>。

你将会看到如下 JSON 响应：

```JSON
{"item_id": 5, "q": "somequery"}
```

你已经创建了一个具有以下功能的 API：

* 通过 _路径_ `/` 和 `/items/{item_id}` 接受 HTTP 请求。
* 以上 _路径_ 都接受 `GET` 操作（也被称为 HTTP _方法_）。
* `/items/{item_id}` _路径_ 有一个 _路径参数_ `item_id` 并且应该为 `int` 类型。

### Kiểm tra

Mở trình duyệt của bạn tại <a href="http://127.0.0.1:8000/items/5?q=somequery" class="external-link" target="_blank">http://127.0.0.1:8000/items/5?q=somequery</a>.

Bạn sẽ thấy một JSON response:

```JSON
{"item_id": 5, "q": "somequery"}
```

Bạn đã sẵn sàng để tạo một API như sau:

* Nhận HTTP request với _đường dẫn_ `/` và `/items/{item_id}`.

    # Update the viewport manually
    context = browser.new_context(viewport={"width": 960, "height": 1080})
    page = context.new_page()
    page.goto("http://localhost:8000/docs")
    page.get_by_text("GET/items/Read Items").click()
    page.get_by_role("button", name="Try it out").click()
    page.get_by_role("button", name="Execute").click()
    # Manually add the screenshot
    page.screenshot(

```

O valor do parâmetro que foi passado à `item_id` será passado para a sua função como o argumento `item_id`.

Então, se você rodar este exemplo e for até <a href="http://127.0.0.1:8000/items/foo" class="external-link" target="_blank">http://127.0.0.1:8000/items/foo</a>, você verá a seguinte resposta:

```JSON
{"item_id":"foo"}
```

## Parâmetros da rota com tipos

from fastapi import FastAPI
from fastapi.testclient import TestClient

swagger_ui_oauth2_redirect_url = "/docs/redirect"

app = FastAPI(swagger_ui_oauth2_redirect_url=swagger_ui_oauth2_redirect_url)


@app.get("/items/")
async def read_items():
    return {"id": "foo"}


client = TestClient(app)


def test_swagger_ui():
    response = client.get("/docs")
    assert response.status_code == 200, response.text

from fastapi import FastAPI, Query

app = FastAPI()


@app.get("/items/")
async def read_items(q: str = Query(default=..., min_length=3)):
    results = {"items": [{"item_id": "Foo"}, {"item_id": "Bar"}]}
    if q:
        results.update({"q": q})