1         /// <summary>
 2         /// 获取登录操作的验证码
 3         /// code作为换取access_token的票据，每次用户授权带上的code将不一样，code只能使用一次，5分钟未被使用自动过期。
 4         /// </summary>
 5         /// <param name="userInfo">用户信息</param>
 6         /// <returns>操作码</returns>
 7         public static BaseResult GetAuthorizationCode(BaseUserInfo userInfo)
 8         {
 9             BaseResult result = new BaseResult();
10
11             if (ServiceUtil.VerifySignature(userInfo))
12             {
13                 // 产生一个授权码
14                 string authorizationCode = Guid.NewGuid().ToString("N");
15                 // 设置缓存服务器，消费一次，5分钟过期。
16                 using (var redisClient = PooledRedisHelper.GetTokenClient())
17                 {
18                     // 2016-03-03 吉日嘎拉 让缓存早点儿失效
19                     DateTime expiresAt = DateTime.Now.AddMinutes(5);
20                     string key = "code:" + authorizationCode;
21                     redisClient.Set(key, userInfo.OpenId, expiresAt);
22                 }
23                 result.ResultValue = authorizationCode;
24                 result.Status = true;
25                 result.StatusCode = Status.OK.ToString();
26                 result.StatusMessage = Status.OK.ToDescription();
27                 result.CreateSignature(userInfo);
28             }
29
30             return result;
31         }

 1         /// <summary>
 2         /// 验证授权码
 3         /// 用掉一次后，一定要消费掉，确保只能用一次。
 4         /// </summary>
 5         /// <param name="userInfo">当前用户信息</param>
 6         /// <param name="code">授权码</param>
 7         /// <param name="openId">用户唯一识别码</param>
 8         /// <returns>验证成功</returns>
 9         public static bool VerifyAuthorizationCode(BaseUserInfo userInfo, string code, out string openId)
10         {
11             bool result = false;
12             openId = string.Empty;
13
14             if (userInfo != null && !ServiceUtil.VerifySignature(userInfo))
15             {
16                 return result;
17             }
18
19             using (var redisClient = PooledRedisHelper.GetTokenClient())
20             {
21                 // 2016-03-03 吉日嘎拉 让缓存早点儿失效
22                 string key = "code:" + code;
23                 openId = redisClient.Get<string>(key);
24                 if (!string.IsNullOrEmpty(openId))
25                 {
26                     result = true;
27                     if (userInfo != null && !string.IsNullOrEmpty(userInfo.OpenId))
28                     {
29                         result = userInfo.OpenId.Equals(openId);
30                     }
31                 }
32                 redisClient.Remove(key);
33             }
34
35             return result;
36         }