```Python hl_lines="27"
{!../../docs_src/body_multiple_params/tutorial004.py!}
```

이렇게:

```Python
q: Optional[str] = None
```

/// info | "정보"

`Body` 또한 `Query`, `Path` 그리고 이후에 볼 다른 것들처럼 동일한 추가 검증과 메타데이터 매개변수를 갖고 있습니다.

///

## 단일 본문 매개변수 삽입하기

Pydantic 모델 `Item`의 `item`을 본문 매개변수로 오직 한개만 갖고있다고 하겠습니다.

        try {
            resultData.setData(data.getBytes(charsetName));
        } catch (final UnsupportedEncodingException e) {
            if (logger.isInfoEnabled()) {
                logger.info("Invalid charsetName: " + charsetName + ". Changed to " + Constants.UTF_8, e);
            }
            charsetName = Constants.UTF_8_CHARSET.name();
            resultData.setData(data.getBytes(Constants.UTF_8_CHARSET));

			return
		}

		writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
		return
	}

	res := madmin.IDPConfig{
		Type: idpCfgType,
		Name: cfgName,
		Info: cfgInfos,
	}
	data, err := json.Marshal(res)
	if err != nil {
		writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
		return
	}

	econfigData, err := madmin.EncryptData(password, data)

general, be batched to be fixed at the same time as a quarterly release. We
credit reporters for identifying security issues, although we keep your name
confidential if you request it. Please see Google Bug Hunters program website

```

## Publish MinIO events MQTT

Install an MQTT Broker from [here](https://mosquitto.org/).

### Step 1: Add MQTT endpoint to MinIO

```JSON
{
    "name": "Foo",
    "price": 50.2
}
```

/// info | "情報"

FastAPIはこれをするために、Pydanticモデルの`.dict()`を<a href="https://docs.pydantic.dev/latest/concepts/serialization/#modeldict" class="external-link" target="_blank">その`exclude_unset`パラメータ</a>で使用しています。

///

/// info | "情報"

以下も使用することができます:

* `response_model_exclude_defaults=True`

    final CountDownLatch tasksFinished = new CountDownLatch(nTasks);
    for (int i = 0; i < nTasks; i++) {
      final String s = "a" + i;
      @SuppressWarnings("unused") // https://errorprone.info/bugpattern/FutureReturnValueIgnored
      Future<?> possiblyIgnoredError =
          threadPool.submit(
              new Runnable() {
                @Override
                public void run() {

                }
                return c.admin().indices().prepareCreate(index).setSource(source, XContentType.JSON).execute();
            });
            if (indexResponse.isAcknowledged()) {
                logger.info("Created {} index.", index);
            } else if (logger.isDebugEnabled()) {
                logger.debug("Failed to create {} index.", index);
            }
        }

		if onlineDisks[i] != nil && onlineDisks[i].IsOnline() {
			// Object info is the same in all disks, so we can pick
			// the first meta from online disk
			fi = partsMetadata[i]
			break
		}
	}

	// we are adding a new version to this object under the namespace lock, so this is the latest version.
	fi.IsLatest = true

	// Success, return object info.

def test_openapi_schema():
    response = client.get("/openapi.json")
    assert response.status_code == 200, response.text
    assert response.json() == {
        "openapi": "3.1.0",
        "info": {"title": "FastAPI", "version": "0.1.0"},
        "paths": {
            "/token": {
                "post": {
                    "responses": {
                        "200": {