/// <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);
}
public List <string> UploadImage(Pixabay.ImageModel image)
{
return(Broker.ExecuteTransaction(() =>
{
var data = new gallery()
{
Id = Guid.NewGuid().ToString(),
tags = image.tags
};
data.previewid = DownloadImage(image.previewURL, data.Id);
data.imageid = DownloadImage(image.largeImageURL, data.Id);
data.preview_url = SysFileService.GetDownloadUrl(data.previewid);
data.image_url = SysFileService.GetDownloadUrl(data.imageid);
base.CreateData(data);
return new List <string>()
{
data.previewid, data.imageid
};
}));
}
/// <summary>
/// 创建图文消息素材
/// </summary>
/// <param name="fileid"></param>
/// <returns></returns>
public string CreateData(string fileid)
{
var file = Broker.Retrieve <sys_file>(fileid);
var data = Broker.Retrieve <wechat_news_material>("SELECT * FROM wechat_news_material WHERE fileid = @id", new Dictionary <string, object>()
{
{ "@id", fileid }
});
if (data == null)
{
var stream = ServiceContainer.Resolve <IStoreStrategy>(StoreConfig.Config.Type).GetStream(fileid);
data = new wechat_news_material()
{
Id = Guid.NewGuid().ToString(),
fileid = fileid
};
data.media_url = WeChatApi.UploadImg(stream, file.name, file.content_type)?.url;
data.local_url = SysFileService.GetDownloadUrl(fileid, false);
CreateData(data);
}
return(data.media_url);
}
public void Execute(PersistBrokerPluginContext context)
{
var entity = context.Entity as wechat_material;
switch (context.Action)
{
case EntityAction.PreCreate:
case EntityAction.PreUpdate:
// 如果素材未上传到系统，则根据url请求图片保存
if (string.IsNullOrEmpty(entity.sys_fileid))
{
var result = HttpUtil.DownloadImage(entity.url, out var contentType);
var id = Guid.NewGuid().ToString();
var stream = StreamUtil.BytesToStream(result);
var hash_code = SHAUtil.GetFileSHA1(stream);
var config = StoreConfig.Config;
ServiceContainer.Resolve<IStoreStrategy>(config?.Type).Upload(stream, entity.name, out var filePath);
var sysImage = new sys_file()
{
sys_fileId = id,
name = entity.name,
real_name = entity.name,
hash_code = hash_code,
file_type = "wechat_material",
content_type = contentType,
objectId = entity.Id
};
new SysFileService(context.Broker).CreateData(sysImage);
entity.sys_fileid = id;
entity.local_url = SysFileService.GetDownloadUrl(id);
}
break;
case EntityAction.PreDelete:
WeChatApi.DeleteMaterial(entity.GetAttributeValue<string>("media_id"));
context.Broker.Delete("sys_file", entity.GetAttributeValue<string>("sys_fileid"));
break;
default:
break;
}
}