zzj19930721
commented
5 years ago `
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Closed zzj19930721 closed 3 years ago
zzj19930721
commented
5 years ago `
`
JeffreySu
commented
4 years ago 你是不是已经把这个流读取了，但是没充值Position，导致后面读取不到了？
hongduo168
commented
4 years ago 遇到了同样的问题，我的问题是因为一些中间件导致的Request.Body内容清空了，解决办法是： `var requestBodyStream = new System.IO.MemoryStream();
var requestBodyStream = new System.IO.MemoryStream();
await context.Request.Body.CopyToAsync(requestBodyStream);
requestBodyStream.Seek(0, System.IO.SeekOrigin.Begin);
requestBodyStream.Seek(0, System.IO.SeekOrigin.Begin);
//中间件代码逻辑
context.Request.Body = requestBodyStream;
await _next(context);`建议你检查一下自己的中间件
JeffreySu
commented
4 years ago @hongduo168 对，一般是这个问题，Body提前被使用了，但是指针没有回去。
` WeixinController.Post 中： //自定义MessageHandler，对微信请求的详细判断操作都在这里面。 var messageHandler = new CustomMessageHandler(Request.GetRequestMemoryStream(), postModel, maxRecordCount);
报错：Root element is missing.”
但是 Request.GetRequestMemoryStream() 是有值的`
fail: Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware[1] An unhandled exception has occurred while executing the request. System.Xml.XmlException: Root element is missing. at System.Xml.XmlTextReaderImpl.Throw(Exception e) at System.Xml.XmlTextReaderImpl.ParseDocumentContent() at System.Xml.XmlTextReaderImpl.Read() at System.Xml.Linq.XDocument.Load(XmlReader reader, LoadOptions options) at Senparc.CO2NET.Utilities.XmlUtility.Convert(Stream stream) at Senparc.NeuChar.MessageHandlers.MessageHandler3..ctor(Stream inputStream, IEncryptPostModel postModel, Int32 maxRecordCount) at Senparc.Weixin.MP.MessageHandlers.MessageHandler1..ctor(Stream inputStream, PostModel postModel, Int32 maxRecordCount, DeveloperInfo developerInfo) in D:\360MoveData\Users\zzj\Desktop\core\WeiXinMPSDK\src\Senparc.Weixin.MP\Senparc.Weixin.MP\MessageHandlers\MessageHandler.cs:line 175 at Senparc.Weixin.MP.Sample.CommonService.CustomMessageHandler.CustomMessageHandler..ctor(Stream inputStream, PostModel postModel, Int32 maxRecordCount) in D:\360MoveData\Users\zzj\Desktop\core\WeiXinMPSDK\Samples\net45-mvc\Senparc.Weixin.MP.Sample.CommonService\MessageHandlers\CustomMessageHandler\CustomMessageHandler.cs:line 87 at Senparc.Weixin.MP.CoreSample.Controllers.WeixinController.Post(PostModel postModel) in D:\360MoveData\Users\zzj\Desktop\core\WeiXinMPSDK\Samples\netcore2.2-mvc\Senparc.Weixin.MP.CoreSample\Controllers\WeixinController.cs:line 98 at lambda_method(Closure , Object , Object[] ) at Microsoft.Extensions.Internal.ObjectMethodExecutor.Execute(Object target, Object[] parameters) at Microsoft.AspNetCore.Mvc.Internal.ActionMethodExecutor.SyncActionResultExecutor.Execute(IActionResultTypeMapper mapper, ObjectMethodExecutor executor, Object controller, Object[] arguments) at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.InvokeActionMethodAsync() at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.InvokeNextActionFilterAsync() at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.Rethrow(ActionExecutedContext context) at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted) at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.InvokeInnerFilterAsync() at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeNextResourceFilter() at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.Rethrow(ResourceExecutedContext context) at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted) at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeFilterPipelineAsync() at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeAsync() at Microsoft.AspNetCore.Builder.RouterMiddleware.Invoke(HttpContext httpContext) at Microsoft.AspNetCore.StaticFiles.StaticFileMiddleware.Invoke(HttpContext context) at Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware.Invoke(HttpContext context)