/// <summary>
/// form文件头（永久素材）
/// </summary>
/// <param name="fileName"></param>
/// <param name="file"></param>
/// <param name="type"></param>
/// <param name="title"></param>
/// <param name="introduction"></param>
/// <returns></returns>
public static MultipartFormDataContent BuildFromContentForever(string fileName, Stream file, EntMediaType type, string title, string introduction)
{
var Boundary = EntInterface.Boundary;
MultipartFormDataContent form = new MultipartFormDataContent(Boundary);
// 文件头
form.Headers.ContentType = MediaTypeHeaderValue.Parse("multipart/form-data;boundary=" + Boundary);
// 视频特殊处理
if (type == EntMediaType.video)
{
var video = "{\"title\":\"" + title + "\", \"introduction\":\"" + introduction + "\"}";
var videoContent = new StringContent(video);
videoContent.Headers.ContentDisposition = new ContentDispositionHeaderValue("form-data")
{
Name = "\"description\"",
};
form.Add(videoContent);
}
var content = EntInterface.BuildStreamContent(fileName, file);
form.Add(content);
return(form);
}
/// <summary>
/// 新增临时素材
/// </summary>
/// <param name="file">文件流</param>
/// <param name="fileName">文件名称</param>
/// <param name="type">媒体文件类型，分别有图片（image）、语音（voice）、视频（video）和缩略图（thumb）</param>
/// <returns></returns>
public static EntMediaResult AddMedia(Stream file, string fileName, EntMediaType type)
{
MultipartFormDataContent content = EntInterface.BuildFromContent(fileName, file);
var url = string.Format(ADD_MEDIA_URL, EntInterface.AccessToken, type.ToString());
return(WebApiHelper.PostHttpContent <EntMediaResult>(url, content));
}