static void Main(string[] args)
{
int i = 1;//701882
List <string> codeList = new List <string>();
var cen = new GenerateShortURL();
while (i < 99999999)
{
// cen.ConfusionConvert(i) //先插入数据，产生自增ID，然后用自增ID生成随机字符串
//var long = md5Str.ToString()
//var val = DateTime.Now.toun + i; //Utils.GenerateCode(6);//
var code = cen.ConfusionConvert(i);//Utils.GenerateCode(); // cen.ConfusionConvert(i);//GetChart(4, i+new Random().Next(1,10)+1000000);//GenerateUniqueText(4);//GetChart(4, GuidToLongID());//GetRandString(6, 90000000);// GenerateRandomCode(4);//
// Console.WriteLine($"Num : {i}");
// Console.WriteLine($"Code : {code}");
//if (codeList.Contains(code))
//{
//codeList.OrderBy(c => c);
//foreach (var item in codeList)
//{
// Console.WriteLine(item);
//}
// Console.WriteLine("任务结束");
// Console.ReadKey();
// }
codeList.Add(code);
i++;
}
Console.WriteLine("去从前：" + codeList.Count);
Console.WriteLine("去从后：" + codeList.Distinct().Count());
Console.ReadKey();
Console.WriteLine("Hello World!");
}
public async Task <object> Generate(string url)
{
#region 验证url的重复和有效性
var urlInfo = UrlCache.Where(t => t.Key == url).FirstOrDefault();
//如果存在直接返回
if (!string.IsNullOrWhiteSpace(urlInfo.Key))
{
return(new { ShortURL = urlInfo.Value });
}
//最多缓存50个
if (UrlCache.Count() > 50)
{
UrlCache.RemoveRange(0, UrlCache.Count() - 50);
}
//Nginx变量设置 proxy_set_header x-host $scheme://$host;
var host = Request.Headers["x-host"].FirstOrDefault();//Nginx 问题获取的是内网地址
try
{
if ((!string.IsNullOrWhiteSpace(host) && url.Contains(host)))
{
return new { ShortURL = url }
}
;
var statusCode = await httpClient.GetAsync(url);
if (!url.Contains("http") ||
(int)statusCode.StatusCode >= 400)
{
return new { ShortURL = "", Msg = "请输入有效网址" }
}
;
}
catch (Exception ex)
{
return(new { ShortURL = "", Msg = "请输入有效网址" });
}
#endregion
var dbConnection = new MySqlConnection(configuration.GetValue <string>("MySQLSPConnection"));
var entityPo = new UrlRecordPO();
var id = await dbConnection.InsertAsync(entityPo);
var seqKey = configuration.GetValue <string>("SeqKye");//获取62个符号和数字（乱序后的）
GenerateShortURL generate = new GenerateShortURL(seqKey);
var shortURL = generate.ConfusionConvert(id);
entityPo.Id = id;
entityPo.ShortURL = shortURL;
entityPo.Url = url;
await dbConnection.UpdateAsync(entityPo);
UrlCache.Add(new KeyValuePair <string, string>(url, shortURL));
return(new { shortURL });
}
public async Task <IActionResult> Index(string key)
{
if (string.IsNullOrWhiteSpace(key))
{
return(View());
}
var seqKey = configuration.GetValue <string>("SeqKye");//获取62个符号和数字（乱序后的）
GenerateShortURL generate = new GenerateShortURL(seqKey);
var id = generate.ConfusionConvert(key);
var dbConnection = new MySqlConnection(configuration.GetValue <string>("MySQLSPConnection"));
//根据id查询对应的映射关系实体
var entity = await dbConnection.QueryFirstOrDefaultAsync <UrlRecordPO>("SELECT * from ShortURLs where Id = @id;", new { id });
entity.LastModificationTime = DateTime.Now;
entity.AccessNumber++;
await dbConnection.UpdateAsync(entity);//更新点击数和最后修改时间
return(Redirect(entity.Url ?? "http://www.haojima.net"));
}
