返回 View 后的 .NET MVC StackOverflow 异常

Question

在将视图发送到客户端后，我的 .NET MVC 项目中出现“System.StackOverflowException”。视图正确呈现，因此客户端看不到错误。但是，服务器随后因 StackOverflow 异常而崩溃。我只在 IISExpress/VisualStudio 中测试过这个，而不是在 IIS 中。

我在远程服务器上有 html 文件。我正在加载这样的html文件：

using (WebClient client = new WebClient() 
{Credentials = new NetworkCredential(Username, Password)})
{
    string html = client.DownloadString(url);
    viewModel.Pages.Add(html);
}

“页面”可以包含多个 html 片段。但是，我使用的测试页面是一个完整的 html 页面，带有“doctype”、“head”、“body”等节点。

在我的视图中，我正在呈现这样的页面：

foreach(var page in Model.Pages)
{
    @Html.Raw(page)
}

正如我所说，页面正确呈现，但服务器随后崩溃。我没有看到任何递归调用。我尝试使用调试诊断工具进行故障排除，但无法填充任何故障转储。

此外，如果我在没有 @Html.Raw() 的情况下呈现“页面”，则不会发生崩溃（但是，页面无法正确呈现。例如，LT/GT 括号被替换为“& gt ;" / "& lt;" 等字符）

我怀疑这可能与“html”字符串的长度或页面内容有关。我有另一个更简单、加载正确且不会导致服务器错误的站点地图页面。

异常也发生在不同的地方：System.Web.dll、mscorlib.dll 和 System.Runtime.Serialization.dll

如何解决此 StackOverflow 异常？

可以使用@Html.Raw() 呈现的字符串的大小是否有限制？

外部堆栈跟踪：

System.Runtime.Serialization.dll!System.Runtime.Serialization.Json.XmlJsonWriter.HasOpenAttribute.get() 未知 System.Runtime.Serialization.dll!System.Runtime.Serialization.Json.XmlJsonWriter.WriteState.get() 未知 System.Runtime.Serialization.dll!System.Runtime.Serialization.Json.XmlJsonWriter.WriteStartAttribute(string prefix, string localName, string ns) 未知 System.Xml.dll!System.Xml.XmlWriter.WriteAttributeString(string localName, string value) 未知 System.Runtime.Serialization.dll!System.Runtime.Serialization.Json.JsonWriterDelegator.WriteInt(int value) 未知 System.Runtime.Serialization.dll!System.Runtime.Serialization.IntDataContract.WriteXmlValue(System.Runtime.Serialization.XmlWriterDelegator writer, object obj, System.Runtime.Serialization.XmlObjectSerializerWriteContext context) 未知 System.Runtime.Serialization.dll!System.Runtime.Serialization.Json.JsonDataContract.WriteJsonValueCore(System.Runtime.Serialization.XmlWriterDelegator jsonWriter, object obj, System.Runtime.Serialization.Json.XmlObjectSerializerWriteContextComplexJson context, System.RuntimeTypeHandle declaredTypeHandle) Unknown System.Runtime.Serialization.dll!System.Runtime.Serialization.Json.XmlObjectSerializerWriteContextComplexJson.WriteDataContractValue(System.Runtime.Serialization.DataContract dataContract, System.Runtime.Serialization.XmlWriterDelegator xmlWriter, object obj, System.RuntimeTypeHandle declaredTypeHandle) Unknown System.Runtime.Serialization.dll!System.Runtime.Serialization.XmlObjectSerializerWriteContext.SerializeAndVerifyType(System.Runtime.Serialization.DataContract dataContract, System.Runtime.Serialization.XmlWriterDelegator xmlWriter, object obj, bool verifyKnownType, System.RuntimeTypeHandle declaredTypeHandle, System.Type声明类型）未知 System.Runtime.Serialization.dll!System.Runtime.Serialization.Json.XmlObjectSerializerWriteContextComplexJson.SerializeWithXsiType(System.Runtime.Serialization.XmlWriterDelegator xmlWriter, object obj, System.RuntimeTypeHandle objectTypeHandle, System.Type objectType, int declaredTypeID, System.RuntimeTypeHandle declaredTypeHandle, System.Type 声明类型）未知 System.Runtime.Serialization.dll!System.Runtime.Serialization.XmlObjectSerializerWriteContext.InternalSerialize(System.Runtime.Serialization.XmlWriterDelegator xmlWriter, object obj, bool isDeclaredType, bool writeXsiType, int declaredTypeID, System.RuntimeTypeHandle declaredTypeHandle) 未知 System.Runtime.Serialization.dll!System.Runtime.Serialization.XmlObjectSerializerWriteContextComplex.InternalSerialize(System.Runtime.Serialization.XmlWriterDelegator xmlWriter, object obj, bool isDeclaredType, bool writeXsiType, int declaredTypeID, System.RuntimeTypeHandle declaredTypeHandle) 未知 【轻量级功能】
System.Runtime.Serialization.dll!System.Runtime.Serialization.Json.JsonCollectionDataContract.WriteJsonValueCore(System.Runtime.Serialization.XmlWriterDelegator jsonWriter, object obj, System.Runtime.Serialization.Json.XmlObjectSerializerWriteContextComplexJson context, System.RuntimeTypeHandle declaredTypeHandle) Unknown System.Runtime.Serialization.dll!System.Runtime.Serialization.Json.XmlObjectSerializerWriteContextComplexJson.WriteDataContractValue(System.Runtime.Serialization.DataContract dataContract, System.Runtime.Serialization.XmlWriterDelegator xmlWriter, object obj, System.RuntimeTypeHandle declaredTypeHandle) Unknown System.Runtime.Serialization.dll!System.Runtime.Serialization.XmlObjectSerializerWriteContext.SerializeAndVerifyType(System.Runtime.Serialization.DataContract dataContract, System.Runtime.Serialization.XmlWriterDelegator xmlWriter, object obj, bool verifyKnownType, System.RuntimeTypeHandle declaredTypeHandle, System.Type声明类型）未知 System.Runtime.Serialization.dll!System.Runtime.Serialization.Json.XmlObjectSerializerWriteContextComplexJson.SerializeWithXsiType(System.Runtime.Serialization.XmlWriterDelegator xmlWriter, object obj, System.RuntimeTypeHandle objectTypeHandle, System.Type objectType, int declaredTypeID, System.RuntimeTypeHandle declaredTypeHandle, System.Type 声明类型）未知 System.Runtime.Serialization.dll!System.Runtime.Serialization.XmlObjectSerializerWriteContext.InternalSerialize(System.Runtime.Serialization.XmlWriterDelegator xmlWriter, object obj, bool isDeclaredType, bool writeXsiType, int declaredTypeID, System.RuntimeTypeHandle declaredTypeHandle) 未知 System.Runtime.Serialization.dll!System.Runtime.Serialization.XmlObjectSerializerWriteContextComplex.InternalSerialize(System.Runtime.Serialization.XmlWriterDelegator xmlWriter, object obj, bool isDeclaredType, bool writeXsiType, int declaredTypeID, System.RuntimeTypeHandle declaredTypeHandle) 未知

从[轻量级函数]到结尾的部分一直重复，直到崩溃。

编辑：

刚刚在“输出”窗口中发现此错误（以及其他错误）：mscorlib.dll 中出现“System.UnauthorizedAccessException”类型的第一次机会异常

Answer 1

通过返回 'Content' 而不是 'View(model)' 解决了这个问题。

之前，我将 html 字符串添加到 ViewModel 并通过返回来呈现页面：

return View(model);

当我将返回更改为 Content 时，服务器并没有崩溃。

return Content(htmlString);