public Task Run()
{
IAggregateFluent <FailChar> query = null;
if (failCode.HasValue)
{
query = failCharSet.Where(w => w.FailCode == failCode.Value);
}
else
{
query = failCharSet.Aggregate();
}
return(query.ForEachAsync(async f =>
{
try
{
using (var httpClient = new HttpClient())
{
httpClient.MaxResponseContentBufferSize = 256000;
httpClient.DefaultRequestHeaders.Add("user-agent", "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/36.0.1985.143 Safari/537.36");
ChineseChar chineseChar = await CrawlerWorkItem.GetOneChinese(httpClient, uri, f.Unicode, len1, len2);
if (chineseChar == null)
{
CrawlerWorkItem.PrintFail(0, f.Unicode, f.Text);
CrawlerWorkItem.AddFailChar(failCharSet, 0, f.Unicode, f.Text, "");
return;
}
if (chineseCharSet.Any(a => a.Unicode == f.Unicode) == false)
{
chineseCharSet.Add(chineseChar);
}
failCharSet.Remove(f.Id);
Console.WriteLine($"已成功修复 Unicode：{f.Unicode} 内容：{f.Text}");
}
}
catch (Exception ex)
{
CrawlerWorkItem.PrintFail(1, f.Unicode, f.Text);
CrawlerWorkItem.AddFailChar(failCharSet, 1, f.Unicode, f.Text, ex.Message);
}
finally
{
await Task.Delay(200);
}
}).ContinueWith(t =>
{
var foregroundColor = ConsoleColor.White;
if (t.IsCompletedSuccessfully == false)
{
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine(t.Exception.ToString());
Console.ForegroundColor = foregroundColor;
}
t.Dispose();
}));
}
async Task Init()
{
await Task.Delay(100);
crawlerInfo = crawlerInfoSet.FirstOrDefault(a => a.BeginUnicode == beginUnicode && a.EndUnicode == endUnicode);
if (crawlerInfo == null)
{
crawlerInfo = new CrawlerInfo
{
BeginUnicode = beginUnicode,
EndUnicode = endUnicode,
Unicode = 0,
ModifiedTime = DateTime.Now,
};
crawlerInfoSet.Add(crawlerInfo);
}
}
public static void AddFailChar(IMongoCollection <FailChar> failCharSet, int failCode, ushort unicode, string text, string failMessage)
{
FailChar failChar = null;
if ((failChar = failCharSet.FirstOrDefault(f => f.Unicode == unicode)) != null)
{
failChar.FailCode = failCode;
failChar.FailMessage = failMessage;
failChar.ModifiedTime = DateTime.Now;
failCharSet.Update(failChar);
}
else
{
failCharSet.Add(new FailChar
{
FailCode = 1,
Unicode = unicode,
Text = text,
FailMessage = failMessage,
CreatedTime = DateTime.Now,
ModifiedTime = DateTime.Now,
});
}
}
public Task GetTask()
{
Task task = Task.Run(async() =>
{
await Init();
ushort begIndex = crawlerInfo.Unicode == 0 ? beginUnicode : crawlerInfo.Unicode;
if (crawlerInfo.IsCompleted)
{
return;
}
string text = string.Empty;
if (chineseCharSet.Any(a => a.Unicode == begIndex))
{
begIndex++;
}
for (ushort i = begIndex; i <= endUnicode; ++i)
{
text = Convert.ToChar(i).ToString();
try
{
ChineseChar chineseChar = await GetOneChinese(httpClient, uri, i, len1, len2);
if (chineseChar == null)
{
PrintFail(0, i, text);
AddFailChar(failCharSet, 0, i, text, "");
continue;
}
chineseCharSet.Add(chineseChar);
crawlerInfo.Unicode = i;
crawlerInfo.ModifiedTime = DateTime.Now;
crawlerInfoSet.Update(crawlerInfo);
Console.WriteLine($"完成记录 Unicode编码：{i} 字符内容：{text}");
}
catch (Exception ex)
{
PrintFail(1, i, text);
AddFailChar(failCharSet, 1, i, text, ex.Message);
}
finally
{
await Task.Delay(200);
}
}
}).ContinueWith(t =>
{
var foregroundColor = ConsoleColor.White;
if (t.IsCompletedSuccessfully == false)
{
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine(t.Exception.ToString());
Console.ForegroundColor = foregroundColor;
}
Console.ForegroundColor = ConsoleColor.Green;
Console.WriteLine($"{beginUnicode}~{endUnicode} 爬虫完成");
Console.ForegroundColor = foregroundColor;
httpClient.Dispose();
if (t.IsCompletedSuccessfully)
{
crawlerInfo.IsCompleted = true;
crawlerInfoSet.Update(crawlerInfo);
}
t.Dispose();
});
return(task);
}