DingTalkDemo/DingDingDemo.../TokenHelper.cs

using Microsoft.Extensions.Caching.Distributed;
using Microsoft.Extensions.Configuration;
using System;
using System.Collections.Generic;
using System.Text;

namespace DingDingDemo.Common
{
    public class TokenHelper
    {
        private readonly IDistributedCache _cache;
        private readonly IConfiguration _configuration;
        public TokenHelper(IDistributedCache cache, IConfiguration configuration)
        {
            _cache = cache;
            _configuration = configuration;
        }

        /// <summary>
        /// 获取AccessToken
        /// </summary>
        /// <returns></returns>
        public string GetAccessToken()
        {
            var accesstoken = _cache.GetString(_configuration["DingTalkSettings:AppKey"] +"accesstoken");
            if (string.IsNullOrEmpty(accesstoken))
            {
                string result = HttpHelper.HttpGet(string.Format(_configuration["DingTalkSettings:TokenUrl"], _configuration["DingTalkSettings:AppKey"], _configuration["DingTalkSettings:AppSecret"]));
                var resultobj = result.ToJObject();
                if (resultobj["errcode"].ToString() == "0")
                {
                    accesstoken = resultobj["access_token"].ToString();
                    string cachetime = _configuration["DingTalkSettings:TokenCacheTime"];
                    DistributedCacheEntryOptions options = new DistributedCacheEntryOptions();
                    options.AbsoluteExpiration = DateTime.Now.AddSeconds(long.Parse(cachetime));
                    _cache.SetString(_configuration["DingTalkSettings:AppKey"] + "accesstoken", accesstoken, options);
                }
            }

            return accesstoken;
        }
    }
}