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@@ -1,4 +1,5 @@
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-using Admin.Core.Common.Attributes;
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+using Admin.Core;
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+using Admin.Core.Common.Attributes;
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using Admin.Core.Common.Cache;
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using Newtonsoft.Json;
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using System;
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@@ -324,6 +325,10 @@ namespace Admin.Tools.Captcha
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/// <returns></returns>
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public async Task<bool> CheckAsync(CaptchaInput input)
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{
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+ if (input == null || input.Data.IsNull())
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+ {
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+ return false;
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+ }
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var key = string.Format(CacheKey.VerifyCodeKey, input.Token);
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if (await _cache.ExistsAsync(key))
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{
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zhontai