responses - Code Search

docs/zh-hant/docs/tutorial/handling-errors.md

```JSON
{"message": "Oops! yolo did something. There goes a rainbow..."}
```

/// note | 技術細節

你也可以使用 `from starlette.requests import Request` 與 `from starlette.responses import JSONResponse`。

**FastAPI** 以便利性為由，提供和 `starlette.responses` 相同的介面於 `fastapi.responses`。但大多數可用的回應類型其實直接來自 Starlette。`Request` 也一樣。

///

## 覆寫預設例外處理器 { #override-the-default-exception-handlers }

**FastAPI** 內建了一些預設例外處理器。

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github.com/tiangolo/fastapi

tests/test_include_route.py

from fastapi.responses import JSONResponse
from fastapi.testclient import TestClient

app = FastAPI()
router = APIRouter()


@router.route("/items/")
def read_items(request: Request):
    return JSONResponse({"hello": "world"})


app.include_router(router)

client = TestClient(app)


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

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github.com/tiangolo/fastapi

tests/test_reponse_set_reponse_code_empty.py


def test_dependency_set_status_code():
    response = client.delete("/1")
    assert response.status_code == 400 and response.content
    assert response.json() == {"msg": "Status overwritten", "id": 1}


def test_openapi_schema():
    response = client.get("/openapi.json")
    assert response.status_code == 200, response.text
    assert response.json() == snapshot(
        {
            "openapi": "3.1.0",

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github.com/tiangolo/fastapi

docs_src/custom_response/tutorial006b_py310.py

from fastapi import FastAPI
from fastapi.responses import RedirectResponse

app = FastAPI()


@app.get("/fastapi", response_class=RedirectResponse)
async def redirect_fastapi():

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github.com/tiangolo/fastapi

tests/test_openapi_route_extensions.py

    return {}


client = TestClient(app)


def test_get_route():
    response = client.get("/")
    assert response.status_code == 200, response.text
    assert response.json() == {}


def test_openapi_schema():
    response = client.get("/openapi.json")
    assert response.status_code == 200, response.text
    assert response.json() == snapshot(
        {
            "openapi": "3.1.0",

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github.com/tiangolo/fastapi

docs/zh-hant/docs/tutorial/request-files.md

{* ../../docs_src/request_files/tutorial002_an_py310.py hl[10,15] *}

你會如宣告所示，收到由 `bytes` 或 `UploadFile` 組成的 `list`。

/// note | 技術細節

你也可以使用 `from starlette.responses import HTMLResponse`。

**FastAPI** 為了讓你（開發者）更方便，提供與 `starlette.responses` 相同的內容作為 `fastapi.responses`。但大多數可用的回應類型其實直接來自 Starlette。

///

### 多檔案上傳且包含額外中繼資料 { #multiple-file-uploads-with-additional-metadata }

同樣地，即使對 `UploadFile`，你也可以用 `File()` 設定額外參數：

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github.com/tiangolo/fastapi

docs_src/custom_response/tutorial003_py310.py

from fastapi import FastAPI
from fastapi.responses import HTMLResponse

app = FastAPI()


@app.get("/items/")
async def read_items():
    html_content = """
    <html>
        <head>
            <title>Some HTML in here</title>
        </head>
        <body>
            <h1>Look ma! HTML!</h1>
        </body>
    </html>
    """

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github.com/tiangolo/fastapi

tests/test_exception_handlers.py


def test_override_http_exception():
    response = client.get("/http-exception")
    assert response.status_code == 200
    assert response.json() == {"exception": "http-exception"}


def test_override_request_validation_exception():
    response = client.get("/request-validation/invalid")
    assert response.status_code == 200
    assert response.json() == {"exception": "request-validation"}

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github.com/tiangolo/fastapi

docs_src/custom_response/tutorial010_py310.py

from fastapi import FastAPI
from fastapi.responses import HTMLResponse

app = FastAPI(default_response_class=HTMLResponse)


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

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github.com/tiangolo/fastapi

docs_src/custom_response/tutorial002_py310.py

from fastapi import FastAPI
from fastapi.responses import HTMLResponse

app = FastAPI()


@app.get("/items/", response_class=HTMLResponse)
async def read_items():
    return """
    <html>
        <head>
            <title>Some HTML in here</title>
        </head>
        <body>
            <h1>Look ma! HTML!</h1>
        </body>
    </html>

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- Last Modified: Thu Feb 12 13:19:43 GMT 2026

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