[ArgumentNullException: String 引用没有设置为 String 的实例。
参数名: s]
System.Text.Encoding.GetBytes(String s) +14653984
Common.JsonHelper.ParseFromJson(String szJson) +99
Network.yijian.ValidRequest(HttpRequest request) +323
Network.yijian.ProcessRequest(HttpContext context) +133
System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +790
System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step) +195
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +88
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