* Map&lt;Object, Object&gt; context )</code> for each model class</li>
 * <li><code>merge<i>Classname</i>_<i>FieldName</i>( <i>Classname</i> target, <i>Classname</i> source, boolean
 * sourceDominant, Map&lt;Object, Object&gt; context )</code> for each field of each model class</li>
 * <li><code>Object get<i>Classname</i>Key( <i>Classname</i> <i>classname</i> )</code>
 * for each class that is used in a list</li>
 * </ul>

import org.junit.jupiter.params.provider.CsvSource;
import org.junit.jupiter.params.provider.ValueSource;

import jcifs.smb.SID;
import jcifs.smb.SmbException;

/**
 * Test class for ACE (Access Control Entry)
 */
class ACETest {

    private ACE ace;
    private byte[] testBuffer;

    @BeforeEach
    void setUp() {
        ace = new ACE();
    }

    @Test

import org.eclipse.aether.util.repository.AuthenticationBuilder;

/**
 * <strong>Warning:</strong> This is an internal utility class that is only public for technical reasons, it is not part
 * of the public API. In particular, this class can be changed or deleted without prior notice.
 *
 */
public class RepositoryUtils {

    private static String nullify(String string) {
        return (string == null || string.isEmpty()) ? null : string;

///

Führen Sie das Beispiel aus mit:

<div class="termy">

```console
$ fastapi dev main.py

<span style="color: green;">INFO</span>:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
```

</div>

## Es testen { #check-it }

Gehen Sie zu der interaktiven Dokumentation unter: <a href="http://127.0.0.1:8000/docs" class="external-link" target="_blank">http://127.0.0.1:8000/docs</a>.

如上文所述，这是 **FastAPI** 中使用的默认响应。

### `ORJSONResponse`

如上文所述，`ORJSONResponse` 是一个使用 <a href="https://github.com/ijl/orjson" class="external-link" target="_blank">`orjson`</a> 的快速的可选 JSON 响应。


### `UJSONResponse`

`UJSONResponse` 是一个使用 <a href="https://github.com/ultrajson/ultrajson" class="external-link" target="_blank">`ujson`</a> 的可选 JSON 响应。

/// warning | 警告

在处理某些边缘情况时，`ujson` 不如 Python 的内置实现那么谨慎。

///

## 运行

/// info | 说明

先安装 <a href="https://github.com/Kludex/python-multipart" class="external-link" target="_blank">`python-multipart`</a>。

安装命令： `pip install python-multipart`。

这是因为 **OAuth2** 使用**表单数据**发送 `username` 与 `password`。

///

用下面的命令运行该示例：

<div class="termy">

```console
$ uvicorn main:app --reload

package org.gradle.test.sub;

public class SubClass {

import com.google.common.cache.LoadingCache;

/**
 * Helper class for managing Fess plugins and artifacts.
 * This class provides functionality to discover, install, and manage various types of plugins
 * including data stores, themes, ingest processors, scripts, web applications, thumbnails, and crawlers.
 */
public class PluginHelper {
    /** Logger instance for this class */

from typing import Union

from fastapi import FastAPI
from pydantic import BaseModel

app = FastAPI()


class Item(BaseModel):
    name: str
    description: Union[str, None] = None
    price: float
    tax: float = 10.5


items = {
    "foo": {"name": "Foo", "price": 50.2},
    "bar": {"name": "Bar", "description": "The Bar fighters", "price": 62, "tax": 20.2},
    "baz": {
        "name": "Baz",

from fastapi import FastAPI
from pydantic import BaseModel

app = FastAPI()


class Item(BaseModel):
    name: str
    description: str | None = None
    price: float
    tax: float | None = None
    tags: set[str] = set()


@app.post(
    "/items/",
    response_model=Item,
    summary="Create an item",
    response_description="The created item",
)
async def create_item(item: Item):
    """