对于大多数情况，OAuth 2.0和OpenID Connect授权端点的GET请求需要具有许多查询字符串参数。
虽然您可以使用任何方法创建带参数的URL来创建正确的字符串，但RequestUrl类是完成此任务的简单帮助程序。
特别是，您可以使用CreateAuthorizeUrl扩展方法为授权端点创建URL - 它支持最常用的参数：
/// <summary>
/// Creates an authorize URL.
/// </summary>
/// <param name="request">The request.</param>
/// <param name="clientId">The client identifier.</param>
/// <param name="responseType">The response type.</param>
/// <param name="scope">The scope.</param>
/// <param name="redirectUri">The redirect URI.</param>
/// <param name="state">The state.</param>
/// <param name="nonce">The nonce.</param>
/// <param name="loginHint">The login hint.</param>
/// <param name="acrValues">The acr values.</param>
/// <param name="prompt">The prompt.</param>
/// <param name="responseMode">The response mode.</param>
/// <param name="codeChallenge">The code challenge.</param>
/// <param name="codeChallengeMethod">The code challenge method.</param>
/// <param name="display">The display option.</param>
/// <param name="maxAge">The max age.</param>
/// <param name="uiLocales">The ui locales.</param>
/// <param name="idTokenHint">The id_token hint.</param>
/// <param name="extra">Extra parameters.</param>
/// <returns></returns>
public static string CreateAuthorizeUrl(this RequestUrl request,
string clientId,
string responseType,
string scope = null,
string redirectUri = null,
string state = null,
string nonce = null,
string loginHint = null,
string acrValues = null,
string prompt = null,
string responseMode = null,
string codeChallenge = null,
string codeChallengeMethod = null,
string display = null,
int? maxAge = null,
string uiLocales = null,
string idTokenHint = null,
object extra = null)
{ ... }
例：
var ru = new RequestUrl("https://demo.identityserver.io/connect/authorize");
var url = ru.CreateAuthorizeUrl(
clientId: "client",
responseType: "implicit",
redirectUri: "https://app.com/callback",
nonce: "xyz",
scope: "openid");