assertThat(callableFuture).isInstanceOf(TrustedListenableFutureTask.class);
    assertTrue(callableFuture.isDone());
    assertThat(callableFuture.get()).isEqualTo("foo");

    TestRunnable runnable2 = new TestRunnable();
    ListenableFuture<Integer> runnableFuture2 = e.submit(runnable2, 3);
    assertThat(runnableFuture2).isInstanceOf(TrustedListenableFutureTask.class);

    assertThat(callableFuture).isInstanceOf(TrustedListenableFutureTask.class);
    assertTrue(callableFuture.isDone());
    assertThat(callableFuture.get()).isEqualTo("foo");

    TestRunnable runnable2 = new TestRunnable();
    ListenableFuture<Integer> runnableFuture2 = e.submit(runnable2, 3);
    assertThat(runnableFuture2).isInstanceOf(TrustedListenableFutureTask.class);

from fastapi import FastAPI

app = FastAPI(openapi_url="/api/v1/openapi.json")


@app.get("/items/")
async def read_items():

from fastapi import FastAPI
from fastapi.responses import UJSONResponse

app = FastAPI()


@app.get("/items/", response_class=UJSONResponse)
async def read_items():

### Die resultierende Response { #the-resulting-response }

Wenn der Client `http://example.com/items/foo` anfordert (ein `item_id` `"foo"`), erhält dieser Client einen HTTP-Statuscode 200 und diese JSON-Response:

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

                </div>
            </la:form>
        </section>
    </main>
    <jsp:include page="/WEB-INF/view/common/admin/footer.jsp"></jsp:include>
</div>
<jsp:include page="/WEB-INF/view/common/admin/foot.jsp"></jsp:include>
</body>

Wenn Sie mit dieser *Pfadoperation* kommunizieren und zwei HTTP-Header senden, wie:

```
X-Token: foo
X-Token: bar
```

Dann wäre die <abbr title="Response – Antwort: Daten, die der Server zum anfragenden Client zurücksendet">Response</abbr>:

```JSON
{
    "X-Token values": [
        "bar",
        "foo"
    ]
}
```

## Zusammenfassung { #recap }

例如，声明 `X-Token` 多次出现的请求头，可以写成这样：

{* ../../docs_src/header_params/tutorial003_an_py310.py hl[9] *}

与*路径操作*通信时，以下面的方式发送两个 HTTP 请求头：

```
X-Token: foo
X-Token: bar
```

响应结果是：

```JSON
{
    "X-Token values": [
        "bar",
        "foo"
    ]
}
```

## 小结 { #recap }

使用 `Header` 声明请求头的方式与 `Query`、`Path` 、`Cookie` 相同。

foo...

foo...