```JSON
{
  "detail": [
    {
      "type": "int_parsing",
      "loc": [
        "path",
        "item_id"
      ],
      "msg": "Input should be a valid integer, unable to parse string as an integer",
      "input": "foo"
    }
  ]
}
```

because the path parameter `item_id` had a value of `"foo"`, which is not an `int`.

import org.gradle.api.provider.MapProperty;
import org.gradle.api.provider.Property;
import org.gradle.api.provider.SetProperty;
import org.gradle.api.tasks.CompileClasspath;
import org.gradle.api.tasks.Input;
import org.gradle.api.tasks.InputFiles;
import org.gradle.api.tasks.OutputFile;
import org.gradle.api.tasks.PathSensitive;
import org.gradle.api.tasks.PathSensitivity;
import org.gradle.api.tasks.SkipWhenEmpty;

     *
     * @param path The filesystem path, may be <code>null</code>.
     * @return The altered filesystem path or <code>null</code> if the input path was <code>null</code>.
     */
    private String chopLeadingFileSeparator(String path) {
        if (path != null) {
            if (path.startsWith("/") || path.startsWith("\\")) {

```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
```

...це спрацює:

// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// This input was created by taking the instruction productions in
// the old assembler's (6a's) grammar and hand-writing complete
// instructions for each rule, to guarantee we cover the same space.

#include "../../../../../runtime/textflag.h"

TEXT	foo(SB), DUPOK|NOSPLIT, $0

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

## 밑줄 변환 비활성화하기 { #disable-convert-underscores }

일반적인 헤더 매개변수와 마찬가지로, 매개변수 이름에 밑줄 문자가 있으면 **자동으로 하이픈으로 변환**됩니다.

对于输出数据，你也可以在模型配置中为 `bytes` 字段使用 `ser_json_bytes`，Pydantic 会在生成 JSON 响应时将字节以 base64 进行序列化。

{* ../../docs_src/json_base64_bytes/tutorial001_py310.py ln[1:2,12:16,29,38:41] hl[16] *}

## 用于输入和输出数据的 Pydantic `bytes` { #pydantic-bytes-for-input-and-output-data }

当然，你也可以使用同一个配置了 base64 的模型，在接收和发送 JSON 数据时，同时处理输入（使用 `val_json_bytes` 进行验证）和输出（使用 `ser_json_bytes` 进行序列化）。

     * @param <REP> The response type
     * @param req List of requests to process
     * @param supplier Function to execute the batch of requests
     * @return List of results corresponding to the input requests
     * @throws BatchRequestException if any request in the batch fails
     */
    <REQ extends Request<?>, REP extends Result<REQ>> List<REP> requests(
            List<REQ> req, Function<List<REQ>, List<REP>> supplier);

public class EncryptInvoker extends LookupInvoker<EncryptContext> {

    public static final int OK = 0; // OK
    public static final int ERROR = 1; // "generic" error
    public static final int BAD_OPERATION = 2; // bad user input or alike
    public static final int CANCELED = 3; // user canceled

    public EncryptInvoker(Lookup protoLookup, @Nullable Consumer<LookupContext> contextConsumer) {
        super(protoLookup, contextConsumer);
    }

public class UpgradeInvoker extends LookupInvoker<UpgradeContext> {

    public static final int OK = 0; // OK
    public static final int ERROR = 1; // "generic" error
    public static final int BAD_OPERATION = 2; // bad user input or alike
    public static final int CANCELED = 3; // user canceled

    public UpgradeInvoker(Lookup protoLookup, @Nullable Consumer<LookupContext> contextConsumer) {
        super(protoLookup, contextConsumer);
    }