什么是XmlNode？

Question

我正在尝试使用PHP和nusoap将数据提交到web服务。我调用的web服务操作位于以下位置：http://service.leads360.com/ClientService.asmx?op=AddLeads

该操作的预期参数为username as string、password as string和leads as XmlNode。对于这个XmlNode，他们给出了模式和xml文档的示例：

http://service.leads360.com/Documentation/Schemas/Client/Leads.Request.xsd

http://service.leads360.com/Documentation/Examples/Client/AddLeads.leads.xml

因此，我复制了他们提供的xml文档并将其转换为数组，将该数组与username和password一起放入另一个名为$params的数组中并执行

$result = $client->call('AddLeads', $params);

不幸的是，它给了我以下错误：

[faultcode] => soap:Server
    [faultstring] => System.Web.Services.Protocols.SoapException: Server was unable to process request. ---> System.NullReferenceException: Object reference not set to an instance of an object.
   at LeadManager.Business.XmlHelper.RemoveNamespace(XmlNode xml, Boolean asElement) in c:\Code\DEV\LeadManager_Business\Utilities\XmlHelper.cs:line 323
   at LeadManagerService.ClientService.InsertSerializedLeads(XmlNode descriptors)
   at LeadManagerService.ClientService.InsertLeads(XmlNode descriptor)
   at LeadManagerService.Invoker 1.Invoke(ServiceContext context, String methodName, ICredentials credentials, Object parameters, Requestor requestor)
   at LeadManagerService.ClientService.AddLeads(String username, String password, XmlNode leads)
   --- End of inner exception stack trace ---

我将我的代码粘贴到：http://pastebin.com/7jbPGuqn。

我还粘贴了下面作为leads参数传递的数组。请告诉我该数组是否表示示例中的xml文档，以及它是否是有效的XmlNode。

Array
(
    [Leads] => Array
        (
            [Lead] => Array
                (
                    [0] => Array
                        (
                            [Status] => Array
                                (
                                )
                            [Status_attr] => Array
                                (
                                    [StatusId] => 2
                                )
                            [Campaign] => Array
                                (
                                )
                            [Campaign_attr] => Array
                                (
                                    [CampaignId] => 3
                                )
                            [Agent] => Array
                                (
                                )
                            [Agent_attr] => Array
                                (
                                    [AgentId] => 1
                                )
                            [Fields] => Array
                                (
                                    [Field] => Array
                                        (
                                            [0] => Array
                                                (
                                                )
                                            [1] => Array
                                                (
                                                )
                                            [0_attr] => Array
                                                (
                                                    [FieldId] => 2
                                                    [Value] => F1Name
                                                )
                                            [1_attr] => Array
                                                (
                                                    [FieldId] => 3
                                                    [Value] => L1Name
                                                )
                                            [2] => Array
                                                (
                                                )
                                            [2_attr] => Array
                                                (
                                                    [FieldId] => 4
                                                    [Value] => a@y.com
                                                )
                                            [3] => Array
                                                (
                                                )
                                            [3_attr] => Array
                                                (
                                                    [FieldId] => 5
                                                    [Value] => 111111111
                                                )
                                            [4] => Array
                                                (
                                                )
                                            [4_attr] => Array
                                                (
                                                    [FieldId] => 6
                                                    [Value] => 
                                                )
                                        )
                                )
                        )
                    [1] => Array
                        (
                            [Fields] => Array
                                (
                                    [Field] => Array
                                        (
                                            [0] => Array
                                                (
                                                )
                                            [1] => Array
                                                (
                                                )
                                            [0_attr] => Array
                                                (
                                                    [FieldId] => 2
                                                    [Value] => F2Name
                                                )
                                            [1_attr] => Array
                                                (
                                                    [FieldId] => 3
                                                    [Value] => L2Name
                                                )
                                            [2] => Array
                                                (
                                                )
                                            [2_attr] => Array
                                                (
                                                    [FieldId] => 4
                                                    [Value] => b@y.com
                                                )
                                            [3] => Array
                                                (
                                                )
                                            [3_attr] => Array
                                                (
                                                    [FieldId] => 5
                                                    [Value] => 222222222
                                                )
                                        )
                                )
                        )
                    [2] => Array
                        (
                            [Fields] => Array
                                (
                                    [Field] => Array
                                        (
                                            [0] => Array
                                                (
                                                )
                                            [1] => Array
                                                (
                                                )
                                            [0_attr] => Array
                                                (
                                                    [FieldId] => 2
                                                    [Value] => F3Name
                                                )
                                            [1_attr] => Array
                                                (
                                                    [FieldId] => 3
                                                    [Value] => L3Name
                                                )
                                            [2] => Array
                                                (
                                                )
                                            [2_attr] => Array
                                                (
                                                    [FieldId] => 4
                                                    [Value] => c@y.com
                                                )
                                            [3] => Array
                                                (
                                                )
                                            [3_attr] => Array
                                                (
                                                    [FieldId] => -9999999
                                                    [Value] => 333333333
                                                )
                                        )
                                )
                        )
                )
        )
)

Answer 1

与元素的值是简单的int或string不同，XmlNode是一个更复杂的结构，它是一个XML元素。

在服务的WSDL中，您可以找到AddLeads元素的以下内容：

<s:element name="AddLeads">
    <s:complexType>
      <s:sequence>
        <s:element minOccurs="0" maxOccurs="1" name="username" type="s:string"/>
        <s:element minOccurs="0" maxOccurs="1" name="password" type="s:string"/>
        <s:element minOccurs="0" maxOccurs="1" name="leads">
          <s:complexType mixed="true">
            <s:sequence>
              <s:any/>
            </s:sequence>
          </s:complexType>
        </s:element>
      </s:sequence>
    </s:complexType>
</s:element>

这是AddLeads元素的架构。该架构将用于验证您提供的标记。

注意，username和password的类型是string，而leads是"any“复杂类型。这将意味着一条类似如下的消息：

<soapenv:Body>
  <AddLeads>
     <username>foo</username>
     <password>bar</password>
     <leads>
        You may enter ANY elements at this point
     </leads>
  </AddLeads>
</soapenv:Body>

但是“任何”复杂类型的定义都有点过于宽泛，因此web服务的创建者决定将其限制为他们认为有用的信息。下面的模式限制了AddLeads操作上下文中的"any“：

http://service.leads360.com/Documentation/Schemas/Client/Leads.Request.xsd

下面是一个有效的实例：

http://service.leads360.com/Documentation/Examples/Client/AddLeads.leads.xml

我不知道PHP，但是您的代码必须生成一条符合web服务WSDL类型和leads类型的消息。

我建议您使用像SoapUI这样的工具来创建调用web服务的请求。一旦您获得一个成功响应的有效消息内容，调整您的PHP代码以生成相同的格式。您还会发现(另一个工具) TCP Monitor在查看客户端和web服务之间交换的消息方面非常有用。