XML 序列化 - 客户端缺少命名空间前缀 [英] XML Serialization - Missing Namespace Prefix at client end

问题描述

我创建了一个 .NET Web 服务，它返回一个对象，比如getResponse"类.

I have created a .NET web service that returns an object, say Class "getResponse".

WS 返回以下响应...

The WS returns the following response ...

<getResponse xmlns="http://tempuri.org/getCustomer/wsdl/">
   <Result xmlns="http://tempuri.org/getCustomer/">
      <ResultCode>OK</ResultCode>
      <ErrorsList/>
   </Result>  
</getResponse>

而客户端实际上正在等待以下...(注意mes-root:"前缀)

while the client is actually waiting for the following... (note the "mes-root:" prefix)

<mes-root:getResponse xsi:schemaLocation="http://tempuri.org/getCustomer/ getCustomer_V200906.xsd" xmlns:mes-root="http://tempuri.org/getCustomer/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
 <mes-root:Result>
  <mes-root:ResultCode/>
  <mes-root:ErrorsList/>
 </mes-root:Result>
</mes-root:getResponse>

我怎样才能做到这一点?我是否需要在 getResponse 类上设置某些 XML 序列化属性，以便 mes-root 前缀显示在客户端?

How can I accomplish this ? Do i need to set certain XML Serialization atttibutes on the getResponse class for the mes-root prefix to show up at the client end ?

我在以下位置发现了类似的问题 http://forums.asp.净/t/1249049.aspx.老实说，我不太了解它，我无法让它工作.

I found a similar question at the following location http://forums.asp.net/t/1249049.aspx. To be honest, I do not quite understand it and I am unable to get it to work.

推荐答案

通常情况下，客户端必须符合 Web 服务发送的响应类型.但是，您的情况似乎有所不同，因为您似乎正在构建一个 Web 服务，为预先存在的客户端提供格式化的响应.

In usual conditions, it is the client which must conform to the type of response that a Web service sends. Your case, however, appears to be different, since you appear to be building a Webservice that provides a pre-existing client a formatted response.

解决命名空间前缀问题，你在问题中提到的链接提供了合适的解决方案；您需要在序列化过程中引导" XmlSerializer，您可以通过将 XmlNamespaceDeclarations 属性指定为返回 XmlSerializerNamespaces 类型的对象的属性来实现此目的.该属性也需要可设置，否则将不会应用命名空间.

To solve the namespace prefix problem, the link you mentioned in your question provides an appropriate solution; You will need to "guide" the XmlSerializer during the serialization process and you can do this by specifying the XmlNamespaceDeclarations attribute to a property that returns an object of type XmlSerializerNamespaces. The property will need to be settable as well, or the namespaces will not be applied.

当您将以下代码添加到 getResponse 类时，xml 响应将按照您示例中的预期格式:

When you add the following code to your getResponse class, the xml response will as per expected format in your example:

[XmlNamespaceDeclarations()] 
public XmlSerializerNamespaces xmlsn 
{ 
  get 
  { 
    XmlSerializerNamespaces xsn = new XmlSerializerNamespaces(); 
    xsn.Add("mes-root", "http://tempuri.org/getCustomer/"); 
    return xsn; 
  } 
  set 
  {
  //Just provide an empty setter. 
  } 
} 

分析为此类 Web 服务生成的 WSDL 类显示以下方法(GetMyResponse"是我给返回 GetResponse 对象的 WS 方法的名称):

Analzing the WSDL class generated for such a webservice reveals the following method ("GetMyResponse" is the name I gave to the WS method that returns a GetResponse object):

[System.Web.Services.Protocols.SoapDocumentMethodAttribute("http://tempuri.org/getCustomer/GetMyResponse", RequestNamespace = "http://tempuri.org/getCustomer/", ResponseNamespace = "http://tempuri.org/getCustomer/", Use = System.Web.Services.Description.SoapBindingUse.Literal, ParameterStyle = System.Web.Services.Protocols.SoapParameterStyle.Wrapped)] 
public GetResponse GetMyResponse() 
{ 
  object[] results = this.Invoke("GetMyResponse", new object[-1 + 1]); 
  return (GetResponse)results(0); 
}

我相信 RequestNamespace 和 ResponseNamespace 属性会有所作为.

I believe that the RequestNamespace and ResponseNamespace attributes which make a difference.

希望这可以解决理解这里发生的底层 Xml 序列化的一些问题.

Hope this clears up a few issues in understanding the underlying Xml Serialization that's taking place here.

编辑(评论后)

这是我通过我的测试网络服务收到的回复:

Here is the response I received via my Test webservice:

<?xml version="1.0" encoding="utf-8"?>
<mes-root:GetResponse xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:mes-root="http://tempuri.org/getCustomer/">
  <mes-root:Result>OK</mes-root:Result>
  <mes-root:ErrorsList>
    <mes-root:string>SomeErrors</mes-root:string>
    <mes-root:string>SomeMoreErrors</mes-root:string>
  </mes-root:ErrorsList>
</mes-root:GetResponse>

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