public static Pagelist <T> PageBy <T, TKey>(this IQueryable <T> query, PageInputDto page, Expression <Func <T, TKey> > orderBy)
{
var pagelist = new Pagelist <T>();
var result = new List <T>();
if (page.PageSize <= 0)
{
if (page.Isdesc)
{
result = query.OrderByDescending(orderBy).ToList();
}
else
{
result = query.ToList();
}
}
else
{
if (page.Isdesc)
{
result = query.OrderByDescending(orderBy).Skip(page.PageSize * (page.Page - 1)).Take(page.PageSize).ToList();
}
else
{
result = query.Skip(page.PageSize * (page.Page - 1)).Take(page.PageSize).ToList();
}
}
pagelist.Data.AddRange(result);
pagelist.TotalCount = query.Count();
pagelist.PageSize = page.PageSize;
return(pagelist);
}
public List <object> NextItemsInPage(int start, int count)
{
try
{
List <object> o;
if (start + count > Pagelist.Count)
{
o = Pagelist.GetRange(start, Pagelist.Count - start);
return(o);
}
o = Pagelist.GetRange(start, count);
return(o);
}
catch (Exception ex)
{
WebErrorLog.ErrorInstence.StartErrorLog(ex);
return(null);
}
}
public virtual async Task <Pagelist <TEntity> > GetAsync(FilterDefinition <TEntity> filter, PageInputDto pageInput)
{
if (filter == null)
{
filter = new BsonDocument(); //mongodb过滤不允许为空
}
var pagedList = new Pagelist <TEntity>();
var result = new List <TEntity>();
var entitys = Collection.Find(filter);
var count = await entitys.CountDocumentsAsync();
if (pageInput.PageSize == 0)
{
//排序
if (pageInput.Isdesc)
{
result = await entitys.SortByDescending(d => d.Id).ToListAsync();
}
else
{
result = await entitys.ToListAsync();
}
}
else
{
//排序
if (pageInput.Isdesc)
{
result = await entitys.SortByDescending(d => d.Id).Skip((pageInput.Page - 1) * pageInput.PageSize).Limit(pageInput.PageSize).ToListAsync();
}
else
{
result = await entitys.Skip((pageInput.Page - 1) *pageInput.PageSize).Limit(pageInput.PageSize).ToListAsync();
}
}
pagedList.Data.AddRange(result);
pagedList.TotalCount = count;
pagedList.PageSize = pageInput.PageSize;
return(pagedList);
}
/// <summary>
/// 获得视频详情及播放列表
/// </summary>
/// <param name="bvid"></param>
/// <returns></returns>
public static VideoViewData GetVideoInfo(string bvid, long aid, string referer, bool isBackup = false)
{
string url;
if (bvid != null)
{
url = $"https://api.bilibili.com/x/web-interface/view?bvid={bvid}";
}
else if (aid >= 0)
{
url = $"https://api.bilibili.com/x/web-interface/view?aid={aid}";
}
else
{
return(null);
}
// 采用备用的api，只能获取cid
if (isBackup)
{
string backupUrl = $"https://api.bilibili.com/x/player/pagelist?bvid={bvid}&jsonp=jsonp";
url = backupUrl;
}
string response = Utils.RequestWeb(url, referer);
try
{
VideoView videoView;
if (isBackup)
{
Pagelist pagelist = JsonConvert.DeserializeObject <Pagelist>(response);
videoView = new VideoView
{
code = pagelist.code,
message = pagelist.message,
ttl = pagelist.ttl
};
videoView.data.pages = pagelist.data;
}
else
{
videoView = JsonConvert.DeserializeObject <VideoView>(response);
}
if (videoView != null)
{
if (videoView.data != null)
{
return(videoView.data);
}
else
{
return(null);
// 进入备选的url中
//return GetVideoInfo(bvid, referer, true);
}
}
else
{
return(null);
}
}
catch (JsonReaderException e)
{
Console.WriteLine("GetVideoInfo()发生JsonReader异常: {0}", e);
return(null);
}
catch (Exception e)
{
Console.WriteLine("GetVideoInfo()发生异常: {0}", e);
return(null);
}
}
