-1

我有一个在特定端点连接到 web 服务的 3rd 方库。对于某些服务,我得到以下异常:

Message=The maximum nametable character count quota (16384) has been exceeded while reading XML data. The nametable is a data structure used to store strings encountered during XML processing - long XML documents with non-repeating element names, attribute names and attribute values may trigger this quota. This quota may be increased by changing the MaxNameTableCharCount property on the XmlDictionaryReaderQuotas object used when creating the XML reader. Line 1, position 1339.

解决办法是,增加ReaderQuoata。WCF 通过配置文件建议这一点。

我的 app.config 现在看起来像:

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
    <startup> 
        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5.1" />
    </startup>
  <system.serviceModel>
    <bindings>
      <wsHttpBinding>
        <binding>
          <readerQuotas maxNameTableCharCount="2147483647" />
        </binding>
      </wsHttpBinding>
    </bindings>   
  </system.serviceModel>
</configuration>

当我现在创建一个新的 WsHttpBinding 时,它的值仍然是默认值 16384。

    class Program
    {
        static void Main(string[] args)
        {
            WSHttpBinding x = new WSHttpBinding();
            Console.WriteLine(x.ReaderQuotas.MaxNameTableCharCount); //prints 16384 
        }
    }

我错过了什么?

4

2 回答 2

1

WSHttpBinding x = new WSHttpBinding();WSHttpBinding使用框架默认值创建一个新实例。即使您在配置文件中定义了默认绑定配置,您的代码也不会使用它(有关源代码,请参阅WSHttpBinding.cs)。换句话说,调用 的无参数构造函数WSHttpBinding不会应用任何关联配置文件中的默认绑定,至少我可以看到。

您在这里有几个选择。首先,在配置文件中为绑定配置命名并引用它。其次,在以XmlDictionaryReaderQuotas编程方式创建绑定时将值分配给 。

选项1

<bindings>
  <wsHttpBinding>
    <binding name="MyBinding">
      <readerQuotas maxNameTableCharCount="2147483647" />
    </binding>
  </wsHttpBinding>
</bindings>

WSHttpBinding x = new WSHttpBinding("MyBinding");

选项 2

WSHttpBinding x = new WSHttpBinding();
x.ReaderQuotas rq = new XmlDictionaryReaderQuotas();
rq.MaxNameTableCharCount = Int32.MaxValue;
于 2015-11-02T23:51:46.917 回答
0

您是否尝试过此链接https://social.msdn.microsoft.com/Forums/vstudio/en-US/17592561-c470-452a-a52c-2a5a2839582c/metadataexchangeclient-and-nametable-character-count-quota?forum=wcf

这是我们代码中的一个错误(HTTP-GET 忽略了您传递的绑定)。有一些解决方法

你能看看它们中的任何一个是否对你有用吗?

于 2015-11-02T22:57:31.317 回答