/// <summary>
/// 上传素材（已上传则直接返回）
/// </summary>
/// <param name="type"></param>
/// <param name="fileId"></param>
/// <returns></returns>
public WeChatSuccessUploadResponse CreateData(MaterialType type, string fileId)
{
var file = new SysFileService().GetData(fileId);
AssertUtil.CheckBoolean <SpException>(file == null, $"根据fileid：{fileId}未找到记录", "36B5F5C9-ED65-4CAC-BE60-712278056EA9");
// 检查素材库是否已经上传
var data = Broker.Retrieve <wechat_material>("select * from wechat_material where sys_fileid = @sys_fileid", new Dictionary <string, object>()
{
{ "@sys_fileid", file.sys_fileId }
});
if (data != null)
{
return(new WeChatSuccessUploadResponse()
{
media_id = data.media_id,
url = data.url
});
}
// 获取文件流
var config = StoreConfig.Config;
var stream = ServiceContainer.Resolve <IStoreStrategy>(config?.Type).GetStream(fileId);
var media = WeChatApi.AddMaterial(type, stream, file.name, file.content_type);
stream.Dispose();
// 创建素材记录
var material = new wechat_material()
{
wechat_materialId = Guid.NewGuid().ToString(),
media_id = media.media_id,
url = media.url,
sys_fileid = fileId,
local_url = SysFileService.GetDownloadUrl(fileId),
name = file.name,
type = type.ToMaterialTypeString()
};
CreateData(material);
return(media);
}
/// <summary>
/// 新增永久素材（音乐、视频、图片）
/// </summary>
/// <param name="type"></param>
/// <param name="stream"></param>
/// <param name="fileName"></param>
/// <param name="contentType"></param>
/// <returns></returns>
public static WeChatSuccessUploadResponse AddMaterial(MaterialType type, Stream stream, string fileName, string contentType = "application/octet-stream")
{
var url = string.Format(WeChatApiConfig.GetValue("AddMaterialAPi"), WeChatService.AccessToken, type.ToMaterialTypeString());
byte[] bytes = new byte[stream.Length];
stream.Read(bytes, 0, bytes.Length);
// 设置当前流的位置为流的开始
stream.Seek(0, SeekOrigin.Begin);
var postData = new UploadFile
{
Name = "media",
Filename = fileName,
ContentType = contentType,
Data = bytes
};
var result = HttpUtil.Post(url, postData);
var resultJson = JObject.Parse(result);
if (resultJson.GetValue("errcode") != null && resultJson.GetValue("errcode").ToString() != "0")
{
var error = JsonConvert.DeserializeObject <WeChatErrorResponse>(result);
throw new SpException("添加素材失败：" + error.errmsg);
}
else
{
return(JsonConvert.DeserializeObject <WeChatSuccessUploadResponse>(result));
}
}