139 lines
4.7 KiB
C#
139 lines
4.7 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Web;
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using System.Threading;
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using Deepleo.Weixin.SDK;
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using Deepleo.Weixin.SDK.JSSDK;
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namespace Deepleo.Weixin.SDK.Helpers
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{
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/// <summary>
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/// 由于微信AccessToken，7200s过期，故需要在7200s后重新获取新的有效Token。
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/// ps:每次都重新生成新的Token会比较慢（大概需要500ms）。
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/// </summary>
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public class TokenHelper
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{
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public int Interval { private set; get; }
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public bool Status { private set; get; }
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public DateTime LastRunDateTime { private set; get; }
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public string AppId { private set; get; }
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public string AppSecrect { private set; get; }
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public bool IsOpenJSTickect { private set; get; }
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/// <summary>
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/// 建议小于7200s,比如6000s
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/// </summary>
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/// <param name="IntervalInSeconds"></param>
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/// <param name="appId"></param>
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/// <param name="appSecrect"></param>
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/// <param name="isOpenJSTickect">是否打开JSSDK生成Tickect功能
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/// false:无法通过GetJSTickect获取JSTickect
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/// </param>
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public TokenHelper(int IntervalInSeconds, string appId, string appSecrect, bool isOpenJSTickect = false)
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{
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Interval = IntervalInSeconds;
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AppId = appId;
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AppSecrect = appSecrect;
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Status = false;
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LastRunDateTime = DateTime.MinValue;
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IsOpenJSTickect = isOpenJSTickect;
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}
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public void Run()
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{
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if (Status) throw new Exception(string.Format("Token Manager is already running."));
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Status = true;
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refreshToken();
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_timer = new System.Timers.Timer(Interval * 1000);
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_timer.Elapsed += delegate
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{
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refreshToken();
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if (IsOpenJSTickect)
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{
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refreshJSTickect();
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}
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};
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_timer.Start();
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}
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public void Close()
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{
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if (!Status) throw new Exception(string.Format("Token Manager is already closed."));
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_timer.Stop();
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_timer.Dispose();
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_timer = null;
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Status = false;
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}
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private string _token;
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private string _jsTickect;
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private System.Timers.Timer _timer = null;
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public event EventHandler<EventArgs> TokenChangedEvent;
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public event EventHandler<EventArgs> JSTickectChangedEvent;
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public event EventHandler<ThreadExceptionEventArgs> ErrorEvent;
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/// <summary>
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/// 获取access_token
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/// 刷新access_token后，JSTickect会自动刷新
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/// </summary>
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/// <param name="isForceRefresh">是否强制刷新，建议不要频繁刷新</param>
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/// <returns></returns>
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public string GetToken(bool isForceRefresh = false)
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{
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if (isForceRefresh)
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{
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refreshToken();
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if (IsOpenJSTickect) refreshJSTickect();
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}
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return _token;
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}
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/// <summary>
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/// 使用JSSDK权限签名算法jsapi_ticket
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/// </summary>
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/// <param name="isForceRefresh">是否强制刷新，建议不要频繁刷新</param>
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/// <returns></returns>
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public string GetJSTickect(bool isForceRefresh = false)
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{
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if (!IsOpenJSTickect) return string.Empty;
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if (string.IsNullOrEmpty(_token)) refreshToken();
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if (string.IsNullOrEmpty(_jsTickect)) refreshJSTickect();
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else if (isForceRefresh) refreshJSTickect();
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return _jsTickect;
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}
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private void refreshToken()
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{
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if (!Status) return;
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LastRunDateTime = DateTime.Now;
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try
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{
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string newToken = BasicAPI.GetAccessToken(AppId, AppSecrect).access_token;
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_token = newToken;
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if (TokenChangedEvent != null) TokenChangedEvent(this, EventArgs.Empty);
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}
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catch (Exception ex)
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{
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if (ErrorEvent != null) ErrorEvent(this, new ThreadExceptionEventArgs(ex));
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}
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}
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private void refreshJSTickect()
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{
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if (!Status) return;
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LastRunDateTime = DateTime.Now;
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try
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{
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string newTickect = JSAPI.GetTickect(_token).ticket;
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_jsTickect = newTickect;
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if (JSTickectChangedEvent != null) JSTickectChangedEvent(this, EventArgs.Empty);
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}
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catch (Exception ex)
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{
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if (ErrorEvent != null) ErrorEvent(this, new ThreadExceptionEventArgs(ex));
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}
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}
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}
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} |