我正在编写一个调用Web服务来验证客户端的C#客户端。我使用添加服务引用将wsdl文件添加到我的项目中,并成功生成代理类。
我正在创建将使用的新对象实例:
authenticateAccessPortTypeClient client = new authenticateAccessPortTypeClient();
authDetails details = new authDetails();
returnResult result = new returnResult();
当需要对用户进行身份验证时,这是我的代码:
// This is details that needs to be passed in the header of the SOAP Envelope
details.key = "some key as string";
details.mode = "the mode as string";
// This is a parameter that is passed in the body of the SOAP Envelope
string memKey = "the member key as string";
result = client.authenticateAccess(details, memKey);
textBoxResult.Text = result.message;
我的肥皂反应如下:
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:example="www.example.com">
<soapenv:Header/>
<soapenv:Body>
<example:authenticateAccessResponse>
<result>
<message>some string</message>
</result>
</example:authenticateAccessResponse>
</soapenv:Body>
</soapenv:Envelope>
returnResults在生成的代理类中看起来像这样:
public partial class returnResult : object, System.ComponentModel.INotifyPropertyChanged {
private string messageField;
/// <remarks/>
[System.Xml.Serialization.XmlElementAttribute(Form=System.Xml.Schema.XmlSchemaForm.Unqualified, Order=0)]
public string message {
get {
return this.messageField;
}
set {
this.messageField = value;
this.RaisePropertyChanged("message");
}
}
public event System.ComponentModel.PropertyChangedEventHandler PropertyChanged;
protected void RaisePropertyChanged(string propertyName) {
System.ComponentModel.PropertyChangedEventHandler propertyChanged = this.PropertyChanged;
if ((propertyChanged != null)) {
propertyChanged(this, new System.ComponentModel.PropertyChangedEventArgs(propertyName));
}
}
}
我继续收到错误:对象引用未设置为对象的实例而returnResult为null。
答案 0 :(得分:1)
经过大量的谷歌搜索和调试,感谢评论这篇文章的用户,我解决了我的问题。
实际问题不是在客户端,而是在WSDL文件本身。我更改了WSDL文件的绑定样式以使用包含文字的文档。我的wsdl文件的类型结构已更改为以下内容:
<xsd:element name="nameOfType">
<xsd:complexType>
<xsd:sequence>
<xsd:element minOccurs="1" maxOccurs="1" name="element1" type="xsd:string"/>
<xsd:element minOccurs="1" maxOccurs="1" name="element2" type="xsd:string"/>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
complexType标签需要包装在另一个元素标签中以使用文字包装,并在第一个元素中设置name属性。
然后将消息标记更改为:
<wsdl:message name="messageName">
<wsdl:part name="nameOfType" element="tns:nameOfType"/>
</wsdl:message>
*注意元素属性而不是类型属性
绑定看起来像这样:
<soap:binding style="document" transport="http://schemas.xmlsoap.org/soap/http"/>
<wsdl:operation name="nameOfWebMethod">
<soap:operation soapAction="nameOfWebMethod"/>
<wsdl:input>
<soap:body use="literal"
encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
namespace="urn:youNamespace:nameOfService"/>
<soap:header message="tns:messageName" part="nameOfType" use="literal"/>
</wsdl:input>
<wsdl:output>
<soap:body use="literal"
encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
namespace="urn:youNamespace:nameOfService"/>
</wsdl:output>
</wsdl:operation>
感谢@John Saunders&amp; @Roy Dictus提供您的意见和建议。