using Apewer.Network; using System; namespace Apewer.Web { /// <summary>表示 API 行为结果,仅包含头。</summary> public class HeadResult : ActionResult, IActionResult, IHttpActionResult { #region content int _status = 200; HttpHeaders _headers = new HttpHeaders(); /// <summary>由 RFC 7231 定义的状态码。</summary> /// <value>1xx (Informational)<br />2xx (Successful)<br />3xx (Redirection)<br />4xx (Client Error)<br />5xx (Server Error)</value> public virtual int StatusCode { get { return _status; } set { _status = value; } } /// <summary>头部。</summary> public virtual HttpHeaders Headers { get { return _headers; } set { _headers = value ?? new HttpHeaders(); } } /// <summary>创建结果实例。</summary> public HeadResult() : this(200) { } /// <summary>创建结果实例。</summary> public HeadResult(int status) { StatusCode = status; } #endregion #region execute /// <summary>写入 HTTP 头。</summary> /// <param name="context">API 上下文。</param> /// <param name="contentLength">内容长度。指定为负数时不写入 HTTP 头。</param> protected virtual void WriteHead(ApiContext context, long contentLength) { context.Provider.SetStatus(StatusCode); const string ContentType = "Content-Type"; const string ContentLength = "Content-Length"; foreach (var header in _headers) { if (header.Name.IsEmpty()) continue; if (header.Value.IsEmpty()) continue; // Content-Length if (ContentLength.Equals(header.Name, StringComparison.CurrentCultureIgnoreCase)) { continue; } // Content-Type if (ContentType.Equals(header.Name, StringComparison.CurrentCultureIgnoreCase)) { context.Provider.SetContentType(header.Value); continue; } // default context.Provider.SetHeader(header.Name, header.Value); } // Content-Length if (contentLength >= 0L) { context.Provider.SetContentLength(contentLength); } } /// <summary>写入 HTTP 头,其中不包含 Content-Length。</summary> public override void ExecuteResult(ApiContext context) { WriteHead(context, 0L); } #endregion } }