/// <summary>
/// 获取采样方法对应的采样数量
/// </summary>
/// <param name="sampleMethod">采样方法</param>
/// <returns>目标获取数量</returns>
public static int GetAimCount(Enums.SampleMethod sampleMethod)
{
switch (sampleMethod)
{
case Enums.SampleMethod.All: return(Int32.MaxValue);
case Enums.SampleMethod.First100: return(100);
case Enums.SampleMethod.First5000: return(5000);
default: return(0);
}
}
/// <summary>
/// 获取用户所关注的人的ID列表
/// </summary>
/// <param name="userID">用户ID</param>
/// <param name="sampleMethod">采样数量</param>
/// <returns>ID列表</returns>
public static IEnumerable <string> GetFriendsIDs(string userID, Enums.SampleMethod sampleMethod)
{
if (sampleMethod == Enums.SampleMethod.None)
{
return(null);
}
int target = Utilities.GetAimCount(sampleMethod);
target = Math.Min(target, 5000);
RequireAccPermission(1);
var users = defaultClient.API.Entity.Friendships.FriendIDs(userID, null, target);
return(users.Users);
}
/// <summary>
/// 获取用户至多5000个粉丝
/// </summary>
/// <param name="AuthorID">用户ID</param>
/// <param name="sampleMethod">采样数量</param>
/// <param name="result">返回结果</param>
public static void GetFollowers(string AuthorID, Enums.SampleMethod sampleMethod, List <NetDimension.Weibo.Entities.user.Entity> result)
{
int target = Utilities.GetAimCount(sampleMethod);
int cur = 1;
do
{
RequireAccPermission(1);
var info = defaultClient.API.Entity.Friendships.Followers(AuthorID, null, 200, cur);
foreach (var user in info.Users)
{
result.Add(user);
}
cur = int.Parse(info.NextCursor);
} while (cur != 0 && result.Count < target);
}
/// <summary>
/// 获取用户带有地点信息的微博
/// </summary>
/// <param name="author">用户ID</param>
/// <param name="result">返回结果</param>
/// <param name="sampleMethod">采样数量</param>
public static void GetUserStatusLocationHistory(Author author, List <dynamic> result, Enums.SampleMethod sampleMethod)
{
if (sampleMethod == Enums.SampleMethod.None)
{
return;
}
int cur = 1, target = Utilities.GetAimCount(sampleMethod);
string sinceID = author.Location_LastSinceID;
do
{
try
{
RequireAccPermission(1);
dynamic locationlist = defaultClient.API.Dynamic.Place.UserTimeline(author.AuthorID, sinceID, null, 50, cur++);
try
{
if (locationlist == null || locationlist.statuses == null)
{
return;
}
}
catch (Exception) { return; }
foreach (dynamic status in locationlist.statuses)
{
result.Add(status);
try
{
if (string.IsNullOrEmpty(author.Location_LastSinceID) || Int64.Parse(status.id) > Int64.Parse(author.Location_LastSinceID))
{
author.Location_LastSinceID = status.id;
}
}
catch (Exception) { throw new WeiboException("ID数字格式错误"); }
}
}
catch (WeiboException ex)
{
if (ex.ErrorCode == "00000" || ex.ErrorCode == "23201")
{
break;
}
else
{
throw ex;
}
}
} while (result.Count < target);
}
/// <summary>
/// 获取用户前若干条微博
/// </summary>
/// <param name="userID">用户ID</param>
/// <param name="sampleMethod">采样方法</param>
/// <returns>微博集合</returns>
public static void GetAuthorLatestStatus(Author author, List <NetDimension.Weibo.Entities.status.Entity> result, Enums.SampleMethod sampleMethod)
{
if (sampleMethod == Enums.SampleMethod.None)
{
return;
}
int page = 1, target = Utilities.GetAimCount(sampleMethod), totalNum = target;
string sinceID = author.LastSinceID;
bool finished = false;
do
{
RequireAccPermission(1);
var statuslist = defaultClient.API.Entity.Statuses.UserTimeline(author.AuthorID, null, sinceID, null, 50, page++);
if (statuslist == null || statuslist.Statuses == null)
{
break; //抓取结束条件
}
totalNum = Math.Min(totalNum, statuslist.TotalNumber);
finished = true;
foreach (var status in statuslist.Statuses)
{
result.Add(status);
try
{
if (string.IsNullOrEmpty(author.LastSinceID) || Int64.Parse(status.ID) > Int64.Parse(author.LastSinceID))
{
author.LastSinceID = status.ID;
}
}
catch (Exception) { throw new WeiboException("ID数字格式错误"); };
finished = false;
}
} while (!finished && result.Count < target && result.Count < totalNum);
}
/// <summary>
/// 获取CBD附近发微博的人
/// </summary>
/// <param name="longitude">CBD经度</param>
/// <param name="latitude">CBD纬度</param>
/// <param name="range">CBD辐射半径</param>
/// <param name="startTime">开始时间</param>
/// <param name="endTime">结束时间</param>
/// <returns>该位置附近特定时间段发微博的人及其所发微博ID</returns>
public static void GetUsersNearCBD(double longitude, double latitude, int range, Int64 startTime, Int64 endTime, Enums.SampleMethod sampleMethod, List <dynamic> users, List <dynamic> statuses)
{
int cur = 1, target = Utilities.GetAimCount(sampleMethod);
do
{
try
{
RequireAccPermission(1);
dynamic userlist = defaultClient.API.Dynamic.Place.NearByUsers((float)latitude, (float)longitude, range, 50, cur++, startTime, endTime);
try
{
if (userlist == null || userlist.users == null)
{
break;
}
foreach (dynamic user in userlist.users)
{
users.Add(user);
try
{
dynamic tmp = user.status;
statuses.Add(tmp);
}
catch (Exception) { statuses.Add(null); }
}
}
catch (Exception) { break; }
}
catch (JsonReaderException)
{
break;
}
catch (WeiboException ex)
{
//如果返回内容为空则代表结束
if (ex.ErrorCode == "00000" || ex.ErrorCode == "23201")
{
break;
}
else
{
throw ex;
}
}
} while (users.Count < target);
}
