## Ví dụ

### Khởi tạo

* Tạo một tệp tin `main.py` như sau:

```Python
from typing import Union

from fastapi import FastAPI

app = FastAPI()


@app.get("/")
def read_root():
    return {"Hello": "World"}


@app.get("/items/{item_id}")
def read_item(item_id: int, q: Union[str, None] = None):
    return {"item_id": item_id, "q": q}
```

<details markdown="1">

 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.app.web.api.admin.log;

import static org.codelibs.fess.app.web.admin.log.AdminLogAction.getLogFileItems;
import static org.codelibs.fess.app.web.admin.log.AdminLogAction.isLogFilename;

import java.io.InputStream;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;

```Python
from unicorn import UnicornMiddleware

app = SomeASGIApp()

new_app = UnicornMiddleware(app, some_config="rainbow")
```

Aber FastAPI (eigentlich Starlette) bietet eine einfachere Möglichkeit, welche sicherstellt, dass die internen Middlewares zur Behandlung von Serverfehlern und benutzerdefinierten Exceptionhandlern ordnungsgemäß funktionieren.

Dazu verwenden Sie `app.add_middleware()` (wie schon im Beispiel für CORS gesehen).

             following code:

             <u style="text-decoration-style:solid">from </u><u style="text-decoration-style:solid"><b>main</b></u><u style="text-decoration-style:solid"> import </u><u style="text-decoration-style:solid"><b>app</b></u>

👆 💼, 👉 👨‍🎨 💬 **FastAPI** 👈 🔢 🔛 🔗 **➡** `/` ⏮️ **🛠️** `get`.

⚫️ "**➡ 🛠️ 👨‍🎨**".

///

👆 💪 ⚙️ 🎏 🛠️:

* `@app.post()`
* `@app.put()`
* `@app.delete()`

& 🌅 😍 🕐:

* `@app.options()`
* `@app.head()`
* `@app.patch()`
* `@app.trace()`

/// tip

👆 🆓 ⚙️ 🔠 🛠️ (🇺🇸🔍 👩‍🔬) 👆 🎋.

**FastAPI** 🚫 🛠️ 🙆 🎯 🔑.

ℹ 📥 🎁 📄, 🚫 📄.

 */
package org.codelibs.fess.app.web.api.admin.pathmap;

import static org.codelibs.fess.app.web.admin.pathmap.AdminPathmapAction.getPathMapping;

import java.util.List;
import java.util.stream.Collectors;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.fess.Constants;
import org.codelibs.fess.app.pager.PathMapPager;

import org.codelibs.fess.app.web.CrudMode;
import org.codelibs.fess.app.web.api.ApiResult;
import org.codelibs.fess.app.web.api.ApiResult.ApiConfigResponse;
import org.codelibs.fess.app.web.api.ApiResult.ApiErrorResponse;
import org.codelibs.fess.app.web.api.ApiResult.ApiResponse;
import org.codelibs.fess.app.web.api.ApiResult.ApiUpdateResponse;
import org.codelibs.fess.app.web.api.ApiResult.Status;

import org.codelibs.fess.app.web.CrudMode;
import org.codelibs.fess.app.web.api.ApiResult;
import org.codelibs.fess.app.web.api.ApiResult.ApiConfigResponse;
import org.codelibs.fess.app.web.api.ApiResult.ApiErrorResponse;
import org.codelibs.fess.app.web.api.ApiResult.ApiResponse;
import org.codelibs.fess.app.web.api.ApiResult.ApiUpdateResponse;
import org.codelibs.fess.app.web.api.ApiResult.Status;

 */
package org.codelibs.fess.app.web.api.admin.systeminfo;

import static org.codelibs.fess.app.web.admin.systeminfo.AdminSysteminfoAction.getBugReportItems;
import static org.codelibs.fess.app.web.admin.systeminfo.AdminSysteminfoAction.getEnvItems;
import static org.codelibs.fess.app.web.admin.systeminfo.AdminSysteminfoAction.getFessPropItems;
import static org.codelibs.fess.app.web.admin.systeminfo.AdminSysteminfoAction.getPropItems;

Here you'll see how to serve those files yourself, in the same FastAPI app, and configure the docs to use them.

### Project file structure { #project-file-structure }

Let's say your project file structure looks like this:

```
.
├── app
│   ├── __init__.py
│   ├── main.py
```