wcf - 为什么我会收到此 WCF 错误消息？

Question

当我调用我的 WCF 服务时，我收到以下错误。我在这里缺少什么？

'System.String[]' with data contract name
'ArrayOfstring:http://schemas.microsoft.com/2003/10/Serialization/Arrays'
is not expected. Add any types not known statically to the list of known
types - for example, by using the KnownTypeAttribute attribute or by adding
them to the list of known types passed to DataContractSerializer.'.  Please
see InnerException for more details.

{"There was an error while trying to serialize parameter
http://tempuri.org/:myEntity. The InnerException message was
'Type 'System.String[]' with data contract name
'ArrayOfstring:http://schemas.microsoft.com/2003/10/Serialization/Arrays'
is not expected. Add any types not known statically to the list of known
types - for example, by using the KnownTypeAttribute attribute or by adding
them to the list of known types passed to DataContractSerializer.'.  

Please see InnerException for more details."}

Answer 1

据我所知，您有一个 WCF 函数，它有一个名为“myEntity”的参数。我假设 myEntity 的类型是一个用户定义的类，并且用 DataContract 属性装饰，这是应该的。我还假设 myEntity 的类型有一个成员字段，它是一个字符串数组。让我们假设所有这些都是真的(同样，如果您可以发布代码，那将非常有帮助)。

通常，字符串数组，即 string[]，会很好地序列化。但是，在某些情况下(请参阅 here 和 here )，您可能必须将其添加到已知类型列表中，以便 WCF 正确序列化所有内容。

为此，请添加以下内容:

[DataContract]
[KnownType(typeof(string[]))]
public class YourClassNameHere
{
}