/// <summary>
/// 清掉一个key
/// </summary>
/// <param name="key"></param>
public static void Clear(string key)
{
HttpContextHelper.GetCurrent().Response.Cookies.Append(key, null, new CookieOptions()
{
Expires = DateTime.Now.AddDays(-1)
});
}
/// <summary>
/// 用来生成一个导出的文件名
/// </summary>
/// <param name="dic"></param>
/// <param name="path"></param>
/// <returns></returns>
public static string GetExportFileName(string dir, out string path)
{
path = "/Files/Export/" + dir;
var guide = Guid.NewGuid().ToString();
path += "/" + guide + ".xlsx";
return(HttpContextHelper.GetPath(path));
}
/// <summary>
/// 取得一个新的连接
/// </summary>
/// <returns></returns>
public static IDbConnection GetNewConnection()
{
IDbConnection conn = new MySqlConnection(ConfigHelper.Get(ConfigHelper.DbConnection));
HttpContextHelper.Set(HttpContextHelper.DbConn, conn);
conn.Open();
return(conn);
}
/// <summary>
/// 回滚事务
/// </summary>
public static void RollBackTrans()
{
IDbTransaction transaction = HttpContextHelper.Get <IDbTransaction>(HttpContextHelper.DbTransaction);
if (transaction != null)
{
transaction.Rollback();
HttpContextHelper.Set(HttpContextHelper.DbTransaction, null);
}
}
/// <summary>
/// 提交事务
/// </summary>
public static void SubmitTrans()
{
IDbTransaction transaction = HttpContextHelper.Get <IDbTransaction>(HttpContextHelper.DbTransaction);
if (transaction != null)
{
transaction.Commit();
HttpContextHelper.Set(HttpContextHelper.DbTransaction, null);
}
}
/// <summary>
/// GetCurrentSource
/// </summary>
/// <returns></returns>
public static string GetCurrentSource()
{
var source = HttpUtility.HtmlEncode(HttpContextHelper.GetCurrent().Request.Query["name"]);
if (string.IsNullOrEmpty(source))
{
source = CookieHelper.Get(CookieHelper.WebSource);
}
else
{
CookieHelper.Set(CookieHelper.WebSource, source);
}
return(source);
}
/// <summary>
/// GetRefererUrl
/// </summary>
/// <returns></returns>
public static string GetRefererUrl()
{
var headers = HttpContextHelper.GetCurrent().Request.Headers;
if (headers.ContainsKey("Referer"))
{
return(headers["Referer"]);
}
if (headers.ContainsKey("referer"))
{
return(headers["referer"]);
}
return("");
}
/// <summary>
/// 获取当前上下文中的数据库连接, 要是没有, 则返回新的
/// </summary>
/// <param name="create">如果为true会创建</param>
/// <param name="type">如果为true会创建</param>
/// <returns></returns>
public static IDbConnection GetCurrentConnection(bool create = true)
{
IDbConnection conn = HttpContextHelper.Get <IDbConnection>(HttpContextHelper.DbConn);
if (conn == null)
{
if (create)
{
return(GetNewConnection());
}
return(null);
}
return(conn);
}
/// <summary>
/// 下载一个文件
/// </summary>
/// <param name="url"></param>
public static string DownFile(string url, string name)
{
WebClient client = new WebClient();
try
{
Stream str = client.OpenRead(url);
StreamReader reader = new StreamReader(str);
byte[] mbyte = new byte[1000000];
int allmybyte = (int)mbyte.Length;
int startmbyte = 0;
if (allmybyte <= 0)
{
return("");
}
while (allmybyte > 0)
{
int m = str.Read(mbyte, startmbyte, allmybyte);
if (m == 0)
{
break;
}
startmbyte += m;
allmybyte -= m;
}
reader.Dispose();
str.Dispose();
string path = HttpContextHelper.GetPath(name);
if (File.Exists(path))
{
return(path);
}
FileStream fstr = new FileStream(path, FileMode.OpenOrCreate, FileAccess.Write);
fstr.Write(mbyte, 0, startmbyte);
fstr.Flush();
fstr.Close();
return(path);
}
catch
{
return("");
}
}
/// <summary>
/// 获取当前的事务(整个请求全局有效)
/// </summary>
/// <param name="createNew"></param>
/// <param name="type"></param>
/// <returns></returns>
public static IDbTransaction GetCurrentTransaction(bool createNew = true)
{
IDbTransaction transaction = HttpContextHelper.Get <IDbTransaction>(HttpContextHelper.DbTransaction);
if (transaction == null && createNew)
{
var conn = GetCurrentConnection();
if (conn.State != ConnectionState.Open)
{
conn.Open();
}
transaction = conn.BeginTransaction();
HttpContextHelper.Set(HttpContextHelper.DbTransaction, transaction);
}
return(transaction);
}
/// <summary>
/// 获取当前请求的url
/// </summary>
/// <returns></returns>
public static string GetCurrentUrl()
{
var path = HttpContextHelper.GetCurrent().Request.Headers["X-Original-URL"];
var proto = HttpContextHelper.GetCurrent().Request.Headers["X-Client-Proto"];
var url = "";
// LogHelper.Debug("1GetCurrentUrl path=" + path);
// LogHelper.Debug("1GetCurrentUrl proto=" + proto);
if (string.IsNullOrEmpty(path))
{
var request = HttpContextHelper.GetCurrent().Request;
//为空, 走正常
url = string.Concat(
request.Scheme,
"://",
request.Host.ToUriComponent(),
request.PathBase.ToUriComponent(),
request.Path.ToUriComponent(),
request.QueryString.ToUriComponent());
}
else
{
url = ConfigHelper.Get(ConfigHelper.WebHost) + path;
}
if (string.IsNullOrEmpty(url))
{
url = ConfigHelper.Get(ConfigHelper.WebHost);
}
//url = url.ToLower();
if (!string.IsNullOrEmpty(proto))
{
if (url.IndexOf("http://", StringComparison.OrdinalIgnoreCase) > -1)
{
url = Regex.Replace(url, "http://", proto + "://", RegexOptions.IgnoreCase);
}
else if (url.IndexOf("https://", StringComparison.OrdinalIgnoreCase) > -1)
{
url = Regex.Replace(url, "https://", proto + "://", RegexOptions.IgnoreCase);
}
}
//LogHelper.Debug("1GetCurrentUrl url=" + url);
return(url);
}
/// <summary>
/// 获取客户端IP地址
/// </summary>
/// <returns>若失败则返回回送地址</returns>
public static string GetIp()
{
string userHostAddress = "";
var httpXForwardedFor = HttpContextHelper.GetCurrent().Request.Headers["X-Forwarded-For"].ToString();
//如果客户端使用了代理服务器，则利用HTTP_X_FORWARDED_FOR找到客户端IP地址
if (!string.IsNullOrEmpty(httpXForwardedFor))
{
userHostAddress = httpXForwardedFor.Split(':')[0].Trim();
}
//前两者均失败，则利用Request.UserHostAddress属性获取IP地址，但此时无法确定该IP是客户端IP还是代理IP
if (string.IsNullOrEmpty(userHostAddress))
{
userHostAddress = HttpContextHelper.GetCurrent().Connection.RemoteIpAddress.ToString();
}
//最后判断获取是否成功，并检查IP地址的格式（检查其格式非常重要）
if (!string.IsNullOrEmpty(userHostAddress) && IsIp(userHostAddress))
{
return(userHostAddress);
}
return("127.0.0.1");
}
/// <summary>
/// 从cookie中拿到一个值
/// </summary>
/// <param name="key"></param>
/// <returns></returns>
public static string Get(string key)
{
if (HttpContextHelper.GetCurrent().Request.Cookies.ContainsKey(key))
{
var source = HttpContextHelper.GetCurrent().Request.Cookies[key];
if (string.IsNullOrEmpty(source))
{
return("");
}
var result = "";
try
{
result = RsaHelper.DecryptData(source, RsaHelper.privateKey);
}
catch
{
// ignored
}
return(result);
}
return("");
}
/// <summary>
/// 往cookie中设置一个值
/// </summary>
/// <param name="key"></param>
/// <param name="value"></param>
/// <returns></returns>
public static void Set(string key, string value)
{
var result = "";
if (!string.IsNullOrEmpty(value))
{
try
{
result = RsaHelper.EncryptData(value, RsaHelper.publicKey);
}
catch
{
// ignored
}
}
HttpContextHelper.GetCurrent().Response.Cookies.Append(key, result, new CookieOptions()
{
Domain = ConfigHelper.Get(ConfigHelper.CookieDomain),
Path = "/"
});
}