/// <summary>
/// 删除图文素材
/// </summary>
/// <param name="ids"></param>
public override void DeleteData(List <string> ids)
{
foreach (var item in ids)
{
var data = Broker.Retrieve <wechat_news>(item);
WeChatApi.DeleteMaterial(data.media_id);
}
base.DeleteData(ids);
}
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;
}
}