{* ../../docs_src/query_params_str_validations/tutorial003_an_py310.py hl[10] *}

## Ajouter des expressions régulières { #add-regular-expressions }

Vous pouvez définir un `pattern` d’<dfn title="Une expression régulière, regex ou regexp, est une suite de caractères qui définit un motif de recherche pour les chaînes de caractères.">expression régulière</dfn> auquel le paramètre doit correspondre :

* Объявление **параметров** из других источников: **HTTP-заголовки**, **cookies**, **поля формы** и **файлы**.
* Как задать **ограничения валидации** вроде `maximum_length` или `regex`.
* Очень мощную и простую в использовании систему **<dfn title="также известна как: компоненты, ресурсы, провайдеры, сервисы, инъекции">внедрения зависимостей</dfn>**.

* Déclaration de **paramètres** provenant d'autres emplacements comme : **en-têtes**, **cookies**, **champs de formulaire** et **fichiers**.
* Comment définir des **contraintes de validation** comme `maximum_length` ou `regex`.
* Un système **<dfn title="également connu sous le nom de : composants, ressources, fournisseurs, services, injectables">d'injection de dépendances</dfn>** très puissant et facile à utiliser.

**Spoiler alert**: öğretici - kullanıcı rehberi şunları içerir:

* **parameter**'ların farklı yerlerden: **header**'lar, **cookie**'ler, **form alanları** ve **file**'lar olarak tanımlanması.
* `maximum_length` ya da `regex` gibi **doğrulama kısıtlamalarının** nasıl ayarlanacağı.
* Çok güçlü ve kullanımı kolay bir **<dfn title="şöyle de bilinir: bileşenler, kaynaklar, sağlayıcılar, servisler, enjekte edilebilirler">Bağımlılık Enjeksiyonu</dfn>** sistemi.

import java.util.SortedMap;
import java.util.SortedSet;
import java.util.TreeMap;
import java.util.TreeSet;
import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.regex.Pattern;
import org.jspecify.annotations.NullUnmarked;
import org.jspecify.annotations.Nullable;

/**
 * Generates fresh instances of types that are different from each other (if possible).
 *
 * @author Ben Yu

**Spoiler alert**: the tutorial - user guide includes:

* Declaration of **parameters** from other different places as: **headers**, **cookies**, **form fields** and **files**.
* How to set **validation constraints** as `maximum_length` or `regex`.
* A very powerful and easy to use **<dfn title="also known as components, resources, providers, services, injectables">Dependency Injection</dfn>** system.

**劇透警告**：教學 - 使用者指南包含：

* 來自不同來源的**參數**宣告：例如 **headers**、**cookies**、**form fields** 和 **files**。
* 如何設定**驗證限制**，如 `maximum_length` 或 `regex`。
* 一個非常強大且易用的 **<dfn title="也稱為：components、resources、providers、services、injectables">依賴注入</dfn>** 系統。
* 安全與驗證，包含支援 **OAuth2** 搭配 **JWT tokens** 與 **HTTP Basic** 驗證。
* 宣告**深度巢狀 JSON 模型**的進階（但同樣簡單）技巧（感謝 Pydantic）。

    return try {
      URI(uri)
    } catch (e: URISyntaxException) {
      // Unlikely edge case: the URI has a forbidden character in the fragment. Strip it & retry.
      try {
        val stripped = uri.replace(Regex("[\\u0000-\\u001F\\u007F-\\u009F\\p{javaWhitespace}]"), "")
        URI.create(stripped)
      } catch (e1: Exception) {
        throw RuntimeException(e) // Unexpected!
      }
    }
  }

  /**

final CommandLineParser$ParserState onArgument(String); public final CommandLineParser$ParserState onComplete(); } org/gradle/cli/CommandLineParser.class package org.gradle.cli; public final class CommandLineParser { public static final java.util.regex.Pattern OPTION_NAME_PATTERN; public final java.util.HashMap optionsByString; public boolean allowUnknownOptions; public void CommandLineParser(); static void <clinit>(); public final transient CommandLineOption option(String[]); } org/gradle/cli/P...

import java.util.SortedMap;
import java.util.SortedSet;
import java.util.TreeMap;
import java.util.TreeSet;
import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.regex.Pattern;
import org.jspecify.annotations.NullUnmarked;
import org.jspecify.annotations.Nullable;

/**
 * Generates fresh instances of types that are different from each other (if possible).
 *
 * @author Ben Yu