```json
{
    "detail": [
        {
            "type": "extra_forbidden",
            "loc": ["header", "tool"],
            "msg": "Extra inputs are not permitted",
            "input": "plumbus",
        }
    ]
}
```

## Desativar conversão de underscores { #disable-convert-underscores }

```

他们将收到一个**错误**响应，告诉他们查询参数 `tool` 是不允许的：

```json
{
    "detail": [
        {
            "type": "extra_forbidden",
            "loc": ["query", "tool"],
            "msg": "Extra inputs are not permitted",
            "input": "plumbus"
        }
    ]
}
```

## 总结 { #summary }

你可以使用 **Pydantic 模型**在 **FastAPI** 中声明**查询参数**。😎

/// tip | 提示

```

他們將收到一個**錯誤**回應，告訴他們查詢參數 `tool` 是不允許的：

```json
{
    "detail": [
        {
            "type": "extra_forbidden",
            "loc": ["query", "tool"],
            "msg": "Extra inputs are not permitted",
            "input": "plumbus"
        }
    ]
}
```

## 總結 { #summary }

你可以使用 **Pydantic 模型**在 **FastAPI** 中聲明**查詢參數**。😎

/// tip

                return response;
            }

            @Override
            public void setResponse(CommonServerMessageBlockResponse msg) {
                this.response = msg;
            }

            @Override
            public long getMid() {
                return mid;
            }

            @Override
            public void setMid(long mid) {

```

...因为路径中没有必选参数 `needy`，返回的响应中会显示如下错误信息：

```JSON
{
  "detail": [
    {
      "type": "missing",
      "loc": [
        "query",
        "needy"
      ],
      "msg": "Field required",
      "input": null
    }
  ]
}
```

`needy` 是必选参数，因此要在 URL 中设置值：

```
http://127.0.0.1:8000/items/foo-item?needy=sooooneedy
```

...这样就正常了：

```JSON

        // Create AP-REQ structure
        ASN1Sequence apReqSequence = new DERSequence(new ASN1Encodable[] { new DERTaggedObject(true, 0, new ASN1Integer(5)), // pvno
                new DERTaggedObject(true, 1, new ASN1Integer(14)), // msg-type
        });

        // Create CONTEXT tagged object instead of APPLICATION
        DERTaggedObject contextTag = new DERTaggedObject(false, 14, apReqSequence);

```JSON
{
  "detail": [
    {
      "type": "missing",
      "loc": [
        "query",
        "needy"
      ],
      "msg": "Field required",
      "input": null
    }
  ]
}
```

Оскільки `needy` є обов’язковим параметром, вам потрібно вказати його в URL:

```
http://127.0.0.1:8000/items/foo-item?needy=sooooneedy

如果用戶端嘗試傳送額外的標頭，會收到錯誤回應。

例如，用戶端若傳送名為 `tool`、值為 `plumbus` 的標頭，會收到錯誤回應，指出不允許標頭參數 `tool`：

```json
{
    "detail": [
        {
            "type": "extra_forbidden",
            "loc": ["header", "tool"],
            "msg": "Extra inputs are not permitted",
            "input": "plumbus",
        }
    ]
}
```

## 停用底線轉換 { #disable-convert-underscores }

與一般標頭參數相同，當參數名稱包含底線字元時，會自動轉換為連字號。

```json
{
    "detail": [
        {
            "type": "extra_forbidden",
            "loc": ["cookie", "santa_tracker"],
            "msg": "Extra inputs are not permitted",
            "input": "good-list-please",
        }
    ]
}
```

## Підсумок { #summary }

```json
{
    "detail": [
        {
            "type": "extra_forbidden",
            "loc": ["cookie", "santa_tracker"],
            "msg": "Extra inputs are not permitted",
            "input": "good-list-please",
        }
    ]
}
```

## Récapitulatif { #summary }