/// <summary>
/// 从Redis取Session
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="_"></param>
/// <param name="key">键</param>
/// <param name="expire">过期时间，默认20分钟</param>
/// <returns></returns>
public static T GetByRedis <T>(this HttpSessionState _, string key, int expire = 20) where T : class
{
if (HttpContext.Current is null)
{
throw new Exception("请确保此方法调用是在同步线程中执行！");
}
var sessionKey = HttpContext.Current.Request.Cookies["SessionID"]?.Value;
if (string.IsNullOrEmpty(sessionKey))
{
return(default(T));
}
T obj = _.Get <T>(key);
try
{
sessionKey = "Session:" + sessionKey;
using var redisHelper = RedisHelper.GetInstance(1);
if (redisHelper.KeyExists(sessionKey) && redisHelper.HashExists(sessionKey, key))
{
redisHelper.Expire(sessionKey, TimeSpan.FromMinutes(expire));
return(redisHelper.GetHash <T>(sessionKey, key));
}
return(default(T));
}
catch
{
return(default(T));
}
}
public static T Ensure <T>(this HttpSessionState state, string key) where T : class, new()
{
var value = state.Get <T>(key);
if (value == null)
{
value = new T();
state.Set(key, value);
}
return(value);
}
public static T Get <T>(this HttpSessionState state, string key)
{
return(state.Get <T>(key, default(T)));
}
public static ENLogin GetCurrentUser(this HttpSessionState Session)
{
var user = (ENLogin)Session.Get(GlobalKey.CurrentUser);
return(user);
}