ASP.NET 文本到语音代码在本地开发机器上工作，但不在生产服务器上

Question

我有一个执行文本到语音 TTS 的 ASP.NET 应用程序。该代码在本地机器上运行良好，但是当我将它部署在 Windows 2008 R2 服务器 Enterprise 64 位上时，应用程序池就崩溃了。该应用程序由 v4.0 .NET 框架组成。我在服务器上使用 IIS 7。以下是应用程序池崩溃时的错误。

Service Unavailable

HTTP Error 503. The service is unavailable.

这是我应该更早添加的代码

        MemoryStream ms = new MemoryStream();

        context.Response.ContentType = "audio/wav";

        Thread t = new Thread(() =>
        {
            SpeechSynthesizer ss = new SpeechSynthesizer();
            ss.SetOutputToWaveStream(ms);
            ss.Speak(context.Request.QueryString["tts"]);
        });
        t.Start();

        t.Join();
        ms.Position = 0;
        ms.WriteTo(context.Response.OutputStream);
        context.Response.End();

任何帮助将不胜感激

谢谢

这里是异常的更多细节

An unhandled exception occurred and the process was terminated.

Application ID: /LM/W3SVC/17/ROOT

Process ID: 5340

Exception: System.UnauthorizedAccessException

Message: Retrieving the COM class factory for component with CLSID {A832755E-9C2A-40B4-89B2-3A92EE705852} failed due to the following error: 80070005 Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED)).

StackTrace:    at System.Speech.Internal.Synthesis.VoiceSynthesis.Speak(Prompt prompt)
   at System.Speech.Synthesis.SpeechSynthesizer.Speak(Prompt prompt)
   at TTS.<>c__DisplayClass3.<ProcessRequest>b__0()
   at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
   at System.Threading.ExecutionContext.runTryCode(Object userData)
   at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData)
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Threading.ThreadHelper.ThreadStart()

我已授予 IIS_USRS 对文件 C:\Program Files (x86)\Microsoft Speech SDK 5.1\Bin\TTSEng.dll 的完全权限。现在错误已更改为

An unhandled exception occurred and the process was terminated.

Application ID: /LM/W3SVC/17/ROOT

Process ID: 2816

Exception: System.InvalidOperationException

Message: No voice installed on the system or none available with the current security setting.

StackTrace:    at System.Speech.Internal.Synthesis.VoiceSynthesis.Speak(Prompt prompt)
   at System.Speech.Synthesis.SpeechSynthesizer.Speak(Prompt prompt)
   at TTS.<>c__DisplayClass3.<ProcessRequest>b__0()
   at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
   at System.Threading.ExecutionContext.runTryCode(Object userData)
   at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData)
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)

我的服务器上没有任何声音设备。这个异常正确吗？

Answer 1

尝试关注

1. IIS 是否正在运行
2. 默认网站正在运行
3. 应用程序池和ASP.Net版本
4. 访问适当

Answer 2

zahid 在这里有正确的答案。 在 IIS 中，选择应用程序池，单击高级设置，然后选择身份类型。

语音需要访问用户级别的数据。

Answer 3

尝试为运行应用程序池的同一用户授予对 C:\windows\system32\config\systemprofile\appdata\roaming 的读/写访问权限。