华廷"无法投COM对象"例外 [英] WatiN "Unable to cast COM object" exception
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问题描述
从时间到的时候,我的监控应用模具没有明显的理由。这似乎是mshtml.HTMLDocument资源不可用。任何人都经历过类似的东西?先谢谢了。
错误消息:
2011年4月14日18时26分37秒 - >测试1.2(用户类型的请求),错误:无法投型系统.__ ComObject的COM对象的接口类型mshtml.HTMLDocument。此操作失败的原因是对IID{3050F55F-98B5-11CF-BB82-00AA00BDCE0B}接口的COM组件调用QueryInterface失败,原因是以下错误:不支持此接口(异常来自HRESULT:0x80004002(E_NOINTERFACE)) 。
错误堆栈跟踪:
2011年4月14日18时26分37秒 - >测试1.2(用户类型的请求),追踪:在WatiN.Core.Native.InternetExplorer.IEWaitForComplete.WaitForFramesToComplete(的IHTMLDocument2 maindocument)
在WatiN.Core.Native.InternetExplorer.IEWaitForComplete.WaitForFramesToComplete(的IHTMLDocument2 maindocument)
在WatiN.Core.Native.InternetExplorer.IEWaitForComplete.WaitForCompleteOrTimeout()
在WatiN.Core.WaitForCompleteBase.DoWait()
在WatiN.Core.IE.WaitForComplete(的Int32 waitForCompleteTimeOut)
在WatiN.Core.Browser.GoTo(URI URL)
在WatiN.Core.Browser.GoTo(字符串URL)
在WebMonitor.Tests.Execute()...
解决方案
感谢您的报告。我已经把一个重试周围的演员。此异常可能是由计时引起的。希望再尝试将修复它。将在下一版本的一部分,或者从SourceForge获得最新的code。
from time to time, my monitoring application dies for no obvious reason. It seems like "mshtml.HTMLDocument" resource isn't available. Anyone else experienced something similar? Thanks in advance.
Error message:
14.04.2011 18:26:37 -> Test 1.2 (Subscriber type requests), error: Unable to cast COM object of type 'System.__ComObject' to interface type 'mshtml.HTMLDocument'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{3050F55F-98B5-11CF-BB82-00AA00BDCE0B}' failed due to the following error: No such interface supported (Exception from HRESULT: 0x80004002 (E_NOINTERFACE)).
Error stack trace:
14.04.2011 18:26:37 -> Test 1.2 (Subscriber type requests), trace: at WatiN.Core.Native.InternetExplorer.IEWaitForComplete.WaitForFramesToComplete(IHTMLDocument2 maindocument)
at WatiN.Core.Native.InternetExplorer.IEWaitForComplete.WaitForFramesToComplete(IHTMLDocument2 maindocument)
at WatiN.Core.Native.InternetExplorer.IEWaitForComplete.WaitForCompleteOrTimeout()
at WatiN.Core.WaitForCompleteBase.DoWait()
at WatiN.Core.IE.WaitForComplete(Int32 waitForCompleteTimeOut)
at WatiN.Core.Browser.GoTo(Uri url)
at WatiN.Core.Browser.GoTo(String url)
at WebMonitor.Tests.Execute() ...
解决方案
Thanks for reporting. I have put a a re-try around the cast. This exception is probably caused by timing. Hope the re-try will fix it. Will be part of the next release or get the latest code from SourceForge.
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