/// <summary>
/// 修改图片数据
/// </summary>
/// <param name="groupName">数据库组</param>
/// <param name="collection">集合</param>
/// <param name="file">文件对象</param>
/// <returns></returns>
public bool UpdateImg(string groupName, string collection, SunFile file)
{
SunMongoClient server;
if (!MongoDbServer.GetClentByGroupName(groupName, out server))
{
throw new Exception("数据库群组名不存在");
}
var origDatabase = server.GetDatabase(MUpload.originalImgDatabase);//原图数据库
var origCollection = origDatabase.GetCollection <SunFile>(collection);
var filter = Builders <SunFile> .Filter.Eq(f => f.Id, file.Id);
origCollection.ReplaceOneAsync(filter, file);
return(true);
}
/// <summary>
/// 获取图片数据
/// </summary>
/// <param name="groupName">数据库组名</param>
/// <param name="collection">文件所在的集合</param>
/// <param name="id">文件id</param>
/// <returns></returns>
public static async Task <SunFile> GetImg(string groupName = null, string collection = null, string id = null)
{
try
{
SunMongoClient server;
if (!MongoDbServer.GetClentByGroupName(groupName, out server))
{
throw new Exception("数据库群组名不存在");
}
var origDatabase = server.GetDatabase(MUpload.originalImgDatabase);//原图数据库
var origCollection = origDatabase.GetCollection <SunFile>(collection);
return(await origCollection.Find <SunFile>(f => f.Id == id).FirstOrDefaultAsync());
}
catch
{
throw new Exception("文件不存在");
}
}
/// <summary>
/// 删除文件
/// </summary>
/// <param name="dbGroupName">文件数据库组</param>
/// <param name="collection">文件集合</param>
/// <param name="id">文件ID</param>
/// <returns></returns>
public static bool DeleteFile(string dbGroupName, string collection, string id)
{
try
{
SunMongoClient server;
if (!MongoDbServer.GetClentByGroupName(dbGroupName, out server))
{
throw new Exception("数据库群组名不存在");
}
var origDatabase = server.GetDatabase(MUpload.originalImgDatabase); //原图数据库
var origCollection = origDatabase.GetCollection <SunFile>(collection);
var editCollection = server.GetDatabase(MUpload.editImgDatabase).GetCollection <SunFile>(collection); //缩略图数据库
origCollection.DeleteOneAsync <SunFile>(f => f.Id == id);
var filter = Builders <SunFile> .Filter.ElemMatch(f => f.Id, @"^\w+" + id + "$");
editCollection.DeleteOneAsync(filter);
return(true);
}
catch
{
return(false);
}
}