因此，它将使用参数名称作为请求体中的键（字段名称），并期望一个类似于以下内容的请求体：

```JSON
{
    "item": {
        "name": "Foo",
        "description": "The pretender",
        "price": 42.0,
        "tax": 3.2
    },
    "user": {
        "username": "dave",
        "full_name": "Dave Grohl"
    }
}
```

/// note

请注意，即使 `item` 的声明方式与之前相同，但现在它被期望通过 `item` 键内嵌在请求体中。

///

**FastAPI** 将自动对请求中的数据进行转换，因此 `item` 参数将接收指定的内容，`user` 参数也是如此。

     * This is a required field for identifying which token to update.
     */
    @Required
    @Size(max = 1000)
    public String id;

    /**
     * The username of the user who last updated this access token.
     * Used for audit trail purposes to track who made changes.
     */
    @Size(max = 1000)
    public String updatedBy;

    /**

     * This is a required field for identifying which bad word to update.
     */
    @Required
    @Size(max = 1000)
    public String id;

    /**
     * The username of the user who last updated this bad word entry.
     * Used for audit trail purposes to track who made changes.
     */
    @Size(max = 1000)
    public String updatedBy;

    /**

     * This is a required field for identifying which boost document to update.
     */
    @Required
    @Size(max = 1000)
    public String id;

    /**
     * The username of the user who last updated this boost document configuration.
     * Used for audit trail purposes to track who made changes.
     */
    @Size(max = 1000)
    public String updatedBy;

    /**

     * This is a required field for identifying which file authentication entry to update.
     */
    @Required
    @Size(max = 1000)
    public String id;

    /**
     * The username of the user who last updated this file authentication configuration.
     * Used for audit trail purposes to track who made changes.
     * Maximum length is 255 characters.
     */
    @Size(max = 255)

     * This is a required field for identifying which web config to update.
     */
    @Required
    @Size(max = 1000)
    public String id;

    /**
     * The username of the user who last updated this web configuration.
     * Used for audit trail purposes to track who made changes.
     */
    @Size(max = 1000)
    public String updatedBy;

    /**

     * This is a required field for identifying which file config to update.
     */
    @Required
    @Size(max = 1000)
    public String id;

    /**
     * The username of the user who last updated this file configuration.
     * Used for audit trail purposes to track who made changes.
     */
    @Size(max = 1000)
    public String updatedBy;

    /**

     * This is a required field for identifying which key match to update.
     */
    @Required
    @Size(max = 1000)
    public String id;

    /**
     * The username of the user who last updated this key match configuration.
     * Used for audit trail purposes to track who made changes.
     * Maximum length is 255 characters.
     */
    @Size(max = 255)
    public String updatedBy;

    /**
     * The sort order for this related content (0-2147483647).
     */
    @Min(value = 0)
    @Max(value = 2147483647)
    @ValidateTypeFailure
    public Integer sortOrder;

    /**
     * The username who created this related content.
     */
    @Size(max = 1000)
    public String createdBy;

    /**
     * The timestamp when this related content was created.
     */
    @ValidateTypeFailure

Zum Beispiel, wenn der Client versucht, folgende Formularfelder zu senden:

* `username`: `Rick`
* `password`: `Portal Gun`
* `extra`: `Mr. Poopybutthole`

erhält er eine Error-Response, die ihm mitteilt, dass das Feld `extra` nicht erlaubt ist:

```json
{
    "detail": [
        {