Question

我在web api中有一个POST方法，它有一个RequestAppointment参数。例如：

 // POST: api/RequestAppointment
            public HttpResponseMessage Post([FromBody]RequestAppointment httpRequest)
            {
                var response = Appointment.CreateAppointment(httpRequest);

                return Request.CreateResponse<ResponseRequest>(System.Net.HttpStatusCode.Created, response); 
            }

RequestAppoint类具有以下结构：

public partial class RequestAppointment
    {
        public RequestAppointmentAppointmentInformation appointmentInformation { get; set; }      
    }
    public partial class RequestAppointmentAppointmentInformation
    {
        public string AppointmentCcEmail { get; set; }        
        public string ClaimType { get; set; }       
        public RequestAppointmentAppointmentInformationClaimant Claimant { get; set; }

    }
    public partial class RequestAppointmentAppointmentInformationClaimant
    {
        public System.DateTime DateOfBirth { get; set; }        
    }

可以提出两个请求：第一个是：

<RequestAppointment>
  <appointmentInformation>
    <AppointmentCcEmail>x.x.com</AppointmentCcEmail>   
    <ClaimType>A</ClaimType>
    <Claimant>
      <DateOfBirth>1961-12-25</DateOfBirth>
    </Claimant>
  </appointmentInformation>
</RequestAppointment>

第二个请求是：

<RequestAppointment>
  <appointmentInformation>
    <AppointmentCcEmail>x.x.com</AppointmentCcEmail>   
    <ClaimType>A</ClaimType>   
  </appointmentInformation>
</RequestAppointment>

两个请求XML之间的区别在于＃1具有Claimant标记，而＃2没有。

第二个请求没有，因为当用户从数据接口调用Web服务时未提供请求者。虽然第一个提供Claimant时总会有。

在我使用Fiddler的测试中，我的＃1请求返回数据。也就是说，它能够反序列化为对象RequestAppointment，而＃2请求返回空值。

我该怎么做才能解决这个问题？请求将始终采用这两种格式，并且它们将始终使用相同的模型结构。

我该怎么做才能解决这个问题？我在Fiddler中测试了这个场景。

Answer 1

首先，步骤1.如果您有RequestAppointment XSD文件，最好的解决方案是使用xsd.exe see haw to use it生成类，否则您可以自己创建XSD并执行步骤1，或者最后你应该进行更改并指出显式属性，使你的类XML可序列化。有很多关于它的文章。

使用xsd.exe生成此类，我使用XML创建示例模式，仅在标记<Claimant>中进行更改，使其成为可选项，类看起来像这样。注意工具如何生成可选字段Claimant

//------------------------------------------------------------------------------
// <auto-generated>
//     This code was generated by a tool.
//     Runtime Version:4.0.30319.42000
//
//     Changes to this file may cause incorrect behavior and will be lost if
//     the code is regenerated.
// </auto-generated>
//------------------------------------------------------------------------------

using System.Xml.Serialization;

// 
// This source code was auto-generated by xsd, Version=4.6.1055.0.
// 


/// <remarks/>
[System.CodeDom.Compiler.GeneratedCodeAttribute("xsd", "4.6.1055.0")]
[System.SerializableAttribute()]
[System.Diagnostics.DebuggerStepThroughAttribute()]
[System.ComponentModel.DesignerCategoryAttribute("code")]
[System.Xml.Serialization.XmlTypeAttribute(AnonymousType=true)]
[System.Xml.Serialization.XmlRootAttribute(Namespace="", IsNullable=false)]
public partial class RequestAppointment {

    private RequestAppointmentAppointmentInformation appointmentInformationField;

    /// <remarks/>
    public RequestAppointmentAppointmentInformation appointmentInformation {
        get {
            return this.appointmentInformationField;
        }
        set {
            this.appointmentInformationField = value;
        }
    }
}

/// <remarks/>
[System.CodeDom.Compiler.GeneratedCodeAttribute("xsd", "4.6.1055.0")]
[System.SerializableAttribute()]
[System.Diagnostics.DebuggerStepThroughAttribute()]
[System.ComponentModel.DesignerCategoryAttribute("code")]
[System.Xml.Serialization.XmlTypeAttribute(AnonymousType=true)]
public partial class RequestAppointmentAppointmentInformation {

    private string appointmentCcEmailField;

    private string claimTypeField;

    private RequestAppointmentAppointmentInformationClaimant claimantField;

    /// <remarks/>
    public string AppointmentCcEmail {
        get {
            return this.appointmentCcEmailField;
        }
        set {
            this.appointmentCcEmailField = value;
        }
    }

    /// <remarks/>
    public string ClaimType {
        get {
            return this.claimTypeField;
        }
        set {
            this.claimTypeField = value;
        }
    }

    /// <remarks/>
    public RequestAppointmentAppointmentInformationClaimant Claimant {
        get {
            return this.claimantField;
        }
        set {
            this.claimantField = value;
        }
    }
}

/// <remarks/>
[System.CodeDom.Compiler.GeneratedCodeAttribute("xsd", "4.6.1055.0")]
[System.SerializableAttribute()]
[System.Diagnostics.DebuggerStepThroughAttribute()]
[System.ComponentModel.DesignerCategoryAttribute("code")]
[System.Xml.Serialization.XmlTypeAttribute(AnonymousType=true)]
public partial class RequestAppointmentAppointmentInformationClaimant {

    private System.DateTime dateOfBirthField;

    /// <remarks/>
    [System.Xml.Serialization.XmlElementAttribute(DataType="date")]
    public System.DateTime DateOfBirth {
        get {
            return this.dateOfBirthField;
        }
        set {
            this.dateOfBirthField = value;
        }
    }
}

XSD示例

<?xml version="1.0" encoding="utf-8"?>
<xs:schema attributeFormDefault="unqualified" elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema">
  <xs:element name="RequestAppointment">
    <xs:complexType>
      <xs:sequence>
        <xs:element name="appointmentInformation">
          <xs:complexType>
            <xs:sequence>
              <xs:element name="AppointmentCcEmail" type="xs:string" />
              <xs:element name="ClaimType" type="xs:string" />
              <xs:element name="Claimant" minOccurs="0">
                <xs:complexType>
                  <xs:sequence>
                    <xs:element name="DateOfBirth" type="xs:date" />
                  </xs:sequence>
                </xs:complexType>
              </xs:element>
            </xs:sequence>
          </xs:complexType>
        </xs:element>
      </xs:sequence>
    </xs:complexType>
  </xs:element>
</xs:schema>

Answer 2

感谢您的所有建议。他们都是伟大的！ Seyran的答案确实很棒。但就我的问题而言，我通过nil =＆＃34; true＆＃34;解决了这个问题。（nullable = true）所有元素。我使用xsd为我的请求xml生成类。

由于

XML DeSerialization返回Null值

2 个答案: