/// <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));
}
/// <summary>
/// 新增永久素材
/// </summary>
/// <param name="type"></param>
/// <param name="fileName"></param>
/// <param name="file"></param>
/// <param name="title">视频时有效</param>
/// <param name="introduction">视频时有效</param>
/// <returns></returns>
public static EntMediaResult AddMaterial(EntMediaType type, Stream file, string fileName, string title, string introduction)
{
MultipartFormDataContent form = BuildFromContentForever(fileName, file, type, title, introduction);
var url = string.Format(ADD_MATERIAL_URL, EntInterface.AccessToken);
var result = WebApiHelper.PostAsyncStr(url, form);
return(SerializeHelper.JsonDeserialize <EntMediaResult>(result));
//return WebApiHelper.PostAsync<EntMediaResult>(url, form);
}
/// <summary>
/// 读取永久素材列表
/// </summary>
/// <param name="type">类型 不能为news</param>
/// <param name="offset">从全部素材的该偏移位置开始返回，0表示从第一个素材 默认0</param>
/// <param name="count">返回素材的数量，取值在1到20之间，默认20</param>
/// <returns></returns>
public static EntMeterialResult GetMaterialList(EntMediaType type, int offset, int count = 20)
{
var url = string.Format(GET_MATERIAL_LIST_URL, EntInterface.AccessToken);
if (type == EntMediaType.news)
{
throw new Exception("news请使用GetMaterialNewsList");
}
return(WebApiHelper.PostAsync <EntMeterialResult>(url, new { type = type.ToString(), offset = offset, count = count }));
}
/// <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>
/// 新增永久素材
/// </summary>
/// <param name="filePath"></param>
/// <param name="title"></param>
/// <param name="type"></param>
/// <param name="introduction"></param>
/// <returns></returns>
public static EntMediaResult AddMaterial(string filePath, string title, EntMediaType type, string introduction)
{
return(AddMaterial(type, File.OpenRead(filePath), Path.GetFileName(filePath), title, introduction));
}
/// <summary>
/// 新增临时素材
/// </summary>
/// <param name="filePath"></param>
/// <param name="type"></param>
/// <returns></returns>
public static EntMediaResult AddMedia(string filePath, EntMediaType type)
{
return(AddMedia(File.OpenRead(filePath), Path.GetFileName(filePath), type));
}
