SRGS语法根据GrammarValidator有效，但LoadGrammar抛出异常？ [英] SRGS grammar valid according to GrammarValidator, but LoadGrammar throws exception?

问题描述

我刚刚开始使用Microsoft Speech Server（即.NET下的Microsoft.Speech.Recognition），并且我的公司提供了语法。 当我通过GrammarValidator.exe运行它时，它报告没有错误。 当我尝试将其加载到语音识别
引擎时，它会抛出一个声明存在循环引用的异常。

我的代码非常简单 - 相关部分看起来像这样。  grammar.grxml是顶级文件;可执行文件目录中有几个外部文件，由grammar.grxml引用。

 SpeechRecognitionEngine oSpeechRecognizer 
 = new SpeechRecognitionEngine（new System.Globalization.CultureInfo（ "的en-US"））; 
 SrgsDocument oSrgsDocument = new SrgsDocument（" grammar.grxml"）; 
 string strCurrentDir 
 = System.IO.Path.GetDirectoryName（
 System.Reflection.Assembly.GetExecutingAssembly（）。Location）; 
 Uri uriBase = new Uri（@" file：//" + strCurrentDir +" /"）; 
语法g =新语法（oSrgsDocument，"rootRule"，uriBase）; 
 oSpeechRecognizer.LoadGrammar（g）; 

抛出System.InvalidOperationException，消息为"语法导入规则中的循环引用"，这里是堆栈跟踪：$

 at Microsoft.Speech.Recognition.RecognizerBase.ThrowIfSapiErrorCode（SAPIErrorCodes errorCode）
 at Microsoft.Speech.Recognition.MemoryGrammarContent.Load（SapiGrammar sapiGrammar，Boolean启用，
单一权重，Int32优先级）
 at Microsoft.Speech.Recognition.GrammarContent.Load（SapiGrammar sapiGrammar）
 at Microsoft.Speech.Recognition.Grammar.Load（SapiGrammar sapiGrammar，IRecognizerInternal recognition ）Microsoft.Speech.Recognition.RecognizerBase.LoadGrammarIntoSapi（语法语法）
 Microsoft.Speech.Recognition.RecognizerBase.LoadGrammar（语法语法） >异常中似乎没有任何其他有用的信息。
 
 
那么如何确定语法的问题是什么？&nbs磷;为什么没有GrammarValidator.exe报告此问题？
 
 
 
解决方案
 
 
错误表示在语法中有循环引用。子语法正在引用父语法。您可以通过删除循环引用来解决此问题。
 
 
 
I'm just starting to use Microsoft Speech Server (i.e. Microsoft.Speech.Recognition under .NET), and have a grammar supplied by my company.  When I run it through GrammarValidator.exe, it reports no errors.  When I try to load it into the speech-recognition
 engine, it throws an exception claiming that there are circular references.
My code is pretty simple -- the relevant part looks like this.  grammar.grxml is the top-level file; there are several external files in the executable directory, referred to by grammar.grxml .
SpeechRecognitionEngine oSpeechRecognizer
    = new SpeechRecognitionEngine(new System.Globalization.CultureInfo("en-US"));
SrgsDocument oSrgsDocument = new SrgsDocument("grammar.grxml");
string strCurrentDir
    = System.IO.Path.GetDirectoryName (
        System.Reflection.Assembly.GetExecutingAssembly().Location);
Uri uriBase = new Uri(@"file://" + strCurrentDir + "/");
Grammar g = new Grammar(oSrgsDocument, "rootRule", uriBase);
oSpeechRecognizer.LoadGrammar(g);

A System.InvalidOperationException is thrown, the message is "Circular reference in import rules of grammars.", and here's the stack trace:

at Microsoft.Speech.Recognition.RecognizerBase.ThrowIfSapiErrorCode(SAPIErrorCodes errorCode)
at Microsoft.Speech.Recognition.MemoryGrammarContent.Load(SapiGrammar sapiGrammar, Boolean enabled,
    Single weight, Int32 priority)
at Microsoft.Speech.Recognition.GrammarContent.Load(SapiGrammar sapiGrammar)
at Microsoft.Speech.Recognition.Grammar.Load(SapiGrammar sapiGrammar, IRecognizerInternal recognizer)
at Microsoft.Speech.Recognition.RecognizerBase.LoadGrammarIntoSapi(Grammar grammar)
at Microsoft.Speech.Recognition.RecognizerBase.LoadGrammar(Grammar grammar)
There doesn't seem to be any other useful information in the exception.
So how do I determine what the problem with the grammar is?  And why didn't GrammarValidator.exe report this problem?

解决方案
The error indicates that there is a circular reference in the grammars. A parent grammar is being referenced by a child grammar. You can resolve the issue by removing the circular reference.


                        
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