private string DownloadImage(string url, string objectid)
{
var result = HttpUtil.DownloadImage(url, out var contentType);
var stream = StreamUtil.BytesToStream(result);
var hash_code = SHAUtil.GetFileSHA1(stream);
var config = StoreConfig.Config;
var id = Guid.NewGuid().ToString();
var fileName = $"{id}.{url.Substring(url.LastIndexOf("/") + 1).GetFileType()}";
ServiceContainer.Resolve <IStoreStrategy>(config?.Type).Upload(stream, fileName, out var filePath);
var data = new sys_file()
{
sys_fileId = id,
name = fileName,
real_name = fileName,
hash_code = hash_code,
file_type = "gallery",
content_type = contentType,
objectId = objectid
};
return(Broker.Create(data));
}
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;
}
}
