# WebSockets

Sie können <a href="https://developer.mozilla.org/en-US/docs/Web/API/WebSockets_API" class="external-link" target="_blank">WebSockets</a> mit **FastAPI** verwenden.

## `WebSockets` installieren

Zuerst müssen Sie `WebSockets` installieren:

<div class="termy">

```console
$ pip install websockets

---> 100%
```

</div>

## WebSockets-Client

### In Produktion

from fastapi import Body, FastAPI
from pydantic import BaseModel
from typing_extensions import Annotated

app = FastAPI()


class Item(BaseModel):
    name: str
    description: Union[str, None] = None
    price: float
    tax: Union[float, None] = None


class User(BaseModel):
    username: str
    full_name: Union[str, None] = None


@app.put("/items/{item_id}")
async def update_item(

import org.codelibs.fess.es.config.exentity.LabelType;
import org.codelibs.fess.util.ComponentUtil;

import jakarta.annotation.PostConstruct;

public class LabelTypeHelper extends AbstractConfigHelper {
    private static final Logger logger = LogManager.getLogger(LabelTypeHelper.class);

    protected volatile List<LabelTypeItem> labelTypeItemList;

    protected volatile List<LabelTypePattern> labelTypePatternList;

    @PostConstruct

import jakarta.servlet.http.HttpServletRequest;

/**
 * This class returns a list of a role from a request parameter,
 * a request header and a cookie. The format of the default value
 * is "[\d]+\nrole1,role2,role3", which you can encrypt.
 *
 * @author shinsuke
 *
 */
public class RoleQueryHelper {

    private static final Logger logger = LogManager.getLogger(RoleQueryHelper.class);

import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;

public class SearchEngineApiManager extends BaseApiManager {
    private static final String ADMIN_SERVER = "/admin/server_";

    private static final Logger logger = LogManager.getLogger(SearchEngineApiManager.class);

    protected String[] acceptedRoles = { "admin" };

    public SearchEngineApiManager() {

👉 🖼 🚫 🛠️ ⏲ ⚫️ (👈 💪 ⏸ 📟), 🕴 🧾 🍕.

/// tip

☑ ⏲ 🇺🇸🔍 📨.

🕐❔ 🛠️ ⏲ 👆, 👆 💪 ⚙️ 🕳 💖 <a href="https://www.python-httpx.org" class="external-link" target="_blank">🇸🇲</a> ⚖️ <a href="https://requests.readthedocs.io/" class="external-link" target="_blank">📨</a>.

///

## ✍ ⏲ 🧾 📟

👉 📟 🏆 🚫 🛠️ 👆 📱, 👥 🕴 💪 ⚫️ *📄* ❔ 👈 *🔢 🛠️* 🔜 👀 💖.

        if (value == null || value.getClass() != String.class && destPropertyClass != null && destPropertyClass != String.class) {
            return value;
        }
        Converter converter = converterMap.get(destPropertyName);
        if (converter == null) {
            final Class<?> targetClass;
            if (value.getClass() != String.class) {

🌐 🌌 👈 🚚 🏆 🛠️ 💡 🌐 👩‍💻.

## 📄

⏮️ 🔬 📚 🎛, 👤 💭 👈 👤 🔜 ⚙️ <a href="https://docs.pydantic.dev/" class="external-link" target="_blank">**Pydantic**</a> 🚮 📈.

⤴️ 👤 📉 ⚫️, ⚒ ⚫️ 🍕 🛠️ ⏮️ 🎻 🔗, 🐕‍🦺 🎏 🌌 🔬 ⚛ 📄, &amp; 📉 👨‍🎨 🐕‍🦺 (🆎 ✅, ✍) ⚓️ 🔛 💯 📚 👨‍🎨.

⏮️ 🛠️, 👤 📉 <a href="https://www.starlette.io/" class="external-link" target="_blank">**💃**</a>, 🎏 🔑 📄.

## 🛠️

* <a href="https://github.com/tiangolo/full-stack" class="external-link" target="_blank">https://github.com/tiangolo/full-stack</a>
* <a href="https://github.com/tiangolo/full-stack-flask-couchbase" class="external-link" target="_blank">https://github.com/tiangolo/full-stack-flask-couchbase</a>

* <a href="https://hub.docker.com/_/postgres" class="external-link" target="_blank">PostgreSQL</a>
* <a href="https://hub.docker.com/_/mysql" class="external-link" target="_blank">MySQL</a>
* <a href="https://hub.docker.com/_/mongo" class="external-link" target="_blank">MongoDB</a>
* <a href="https://hub.docker.com/_/redis" class="external-link" target="_blank">Redis</a>, usw.