XmlSerializer不包含非字符串元素

问题描述

这来自WSDL文档：

<s:complexType name="ResponseMsg">
<s:all>
<s:element minOccurs="0" maxOccurs="1" name="Responsestatus" type="s:string" />
<s:element minOccurs="0" maxOccurs="1" name="CurBalance" type="s:double" />
<s:element minOccurs="0" maxOccurs="1" name="AvlBalance" type="s:double" />
<s:element minOccurs="1" maxOccurs="1" name="AckNowledgement" type="s:string" />
<s:element minOccurs="0" maxOccurs="1" name="Loadamount" type="s:double" />
<s:element minOccurs="0" maxOccurs="1" name="Bill_Amt_Approved" type="s:double" />
<s:element minOccurs="0" maxOccurs="1" name="Update_Balance" type="s:int" />
<s:element minOccurs="0" maxOccurs="1" name="New_Balance_Sequence_Exthost" type="s:long" />
<s:element minOccurs="0" maxOccurs="1" name="CVV2_Result" type="s:string" /> <s:element minOccurs="0" maxOccurs="1" name="AvlBalance_GPS_STIP" type="s:double" /> <s:element minOccurs="0" maxOccurs="1" name="CurBalance_GPS_STIP" type="s:double" />
</s:all>
</s:complexType>

将WSDL添加到我的Visual Studio项目（添加服务参考）之后，我得到了：

/// <remarks/>
[System.CodeDom.Compiler.GeneratedCodeAttribute("System.Xml","4.8.3752.0")]
[System.SerializableAttribute()]
[System.Diagnostics.DebuggerStepThroughAttribute()]
[System.ComponentModel.DesignerCategoryAttribute("code")]
[System.Xml.Serialization.XmlTypeAttribute(Namespace="http://tempuri.org/")]
public partial class ResponseMsg : object,System.ComponentModel.INotifyPropertyChanged {
    
    private string responsestatusField;
    
    private double curBalanceField;
    
    private bool curBalanceFieldSpecified;
    
    private double avlBalanceField;
    
    private bool avlBalanceFieldSpecified;
    
    private string ackNowledgementField;
    
    private double loadamountField;
    
    private bool loadamountFieldSpecified;
    
    private double bill_Amt_ApprovedField;
    
    private bool bill_Amt_ApprovedFieldSpecified;
    
    private int update_BalanceField;
    
    private bool update_BalanceFieldSpecified;
    
    private long new_Balance_Sequence_ExthostField;
    
    private bool new_Balance_Sequence_ExthostFieldSpecified;
    
    private string cVV2_ResultField;
    
    private double avlBalance_GPS_STIPField;
    
    private bool avlBalance_GPS_STIPFieldSpecified;
    
    private double curBalance_GPS_STIPField;
    
    private bool curBalance_GPS_STIPFieldSpecified;
    
    /// <remarks/>
    public string Responsestatus {
        get {
            return this.responsestatusField;
        }
        set {
            this.responsestatusField = value;
            this.RaisePropertyChanged("Responsestatus");
        }
    }
    
    /// <remarks/>
    public double CurBalance {
        get {
            return this.curBalanceField;
        }
        set {
            this.curBalanceField = value;
            this.RaisePropertyChanged("CurBalance");
        }
    }
    
    /// <remarks/>
    [System.Xml.Serialization.XmlIgnoreAttribute()]
    public bool CurBalanceSpecified {
        get {
            return this.curBalanceFieldSpecified;
        }
        set {
            this.curBalanceFieldSpecified = value;
            this.RaisePropertyChanged("CurBalanceSpecified");
        }
    }
    
    /// <remarks/>
    public double AvlBalance {
        get {
            return this.avlBalanceField;
        }
        set {
            this.avlBalanceField = value;
            this.RaisePropertyChanged("AvlBalance");
        }
    }
    
    /// <remarks/>
    [System.Xml.Serialization.XmlIgnoreAttribute()]
    public bool AvlBalanceSpecified {
        get {
            return this.avlBalanceFieldSpecified;
        }
        set {
            this.avlBalanceFieldSpecified = value;
            this.RaisePropertyChanged("AvlBalanceSpecified");
        }
    }
    
    /// <remarks/>
    public string AckNowledgement {
        get {
            return this.ackNowledgementField;
        }
        set {
            this.ackNowledgementField = value;
            this.RaisePropertyChanged("AckNowledgement");
        }
    }
    
    /// <remarks/>
    public double Loadamount {
        get {
            return this.loadamountField;
        }
        set {
            this.loadamountField = value;
            this.RaisePropertyChanged("Loadamount");
        }
    }
    
    /// <remarks/>
    [System.Xml.Serialization.XmlIgnoreAttribute()]
    public bool LoadamountSpecified {
        get {
            return this.loadamountFieldSpecified;
        }
        set {
            this.loadamountFieldSpecified = value;
            this.RaisePropertyChanged("LoadamountSpecified");
        }
    }
    
    /// <remarks/>
    public double Bill_Amt_Approved {
        get {
            return this.bill_Amt_ApprovedField;
        }
        set {
            this.bill_Amt_ApprovedField = value;
            this.RaisePropertyChanged("Bill_Amt_Approved");
        }
    }
    
    /// <remarks/>
    [System.Xml.Serialization.XmlIgnoreAttribute()]
    public bool Bill_Amt_ApprovedSpecified {
        get {
            return this.bill_Amt_ApprovedFieldSpecified;
        }
        set {
            this.bill_Amt_ApprovedFieldSpecified = value;
            this.RaisePropertyChanged("Bill_Amt_ApprovedSpecified");
        }
    }
    
    /// <remarks/>
    public int Update_Balance {
        get {
            return this.update_BalanceField;
        }
        set {
            this.update_BalanceField = value;
            this.RaisePropertyChanged("Update_Balance");
        }
    }
    
    /// <remarks/>
    [System.Xml.Serialization.XmlIgnoreAttribute()]
    public bool Update_BalanceSpecified {
        get {
            return this.update_BalanceFieldSpecified;
        }
        set {
            this.update_BalanceFieldSpecified = value;
            this.RaisePropertyChanged("Update_BalanceSpecified");
        }
    }
    
    /// <remarks/>
    public long New_Balance_Sequence_Exthost {
        get {
            return this.new_Balance_Sequence_ExthostField;
        }
        set {
            this.new_Balance_Sequence_ExthostField = value;
            this.RaisePropertyChanged("New_Balance_Sequence_Exthost");
        }
    }
    
    /// <remarks/>
    [System.Xml.Serialization.XmlIgnoreAttribute()]
    public bool New_Balance_Sequence_ExthostSpecified {
        get {
            return this.new_Balance_Sequence_ExthostFieldSpecified;
        }
        set {
            this.new_Balance_Sequence_ExthostFieldSpecified = value;
            this.RaisePropertyChanged("New_Balance_Sequence_ExthostSpecified");
        }
    }
    
    /// <remarks/>
    public string CVV2_Result {
        get {
            return this.cVV2_ResultField;
        }
        set {
            this.cVV2_ResultField = value;
            this.RaisePropertyChanged("CVV2_Result");
        }
    }
    
    /// <remarks/>
    public double AvlBalance_GPS_STIP {
        get {
            return this.avlBalance_GPS_STIPField;
        }
        set {
            this.avlBalance_GPS_STIPField = value;
            this.RaisePropertyChanged("AvlBalance_GPS_STIP");
        }
    }
    
    /// <remarks/>
    [System.Xml.Serialization.XmlIgnoreAttribute()]
    public bool AvlBalance_GPS_STIPSpecified {
        get {
            return this.avlBalance_GPS_STIPFieldSpecified;
        }
        set {
            this.avlBalance_GPS_STIPFieldSpecified = value;
            this.RaisePropertyChanged("AvlBalance_GPS_STIPSpecified");
        }
    }
    
    /// <remarks/>
    public double CurBalance_GPS_STIP {
        get {
            return this.curBalance_GPS_STIPField;
        }
        set {
            this.curBalance_GPS_STIPField = value;
            this.RaisePropertyChanged("CurBalance_GPS_STIP");
        }
    }
    
    /// <remarks/>
    [System.Xml.Serialization.XmlIgnoreAttribute()]
    public bool CurBalance_GPS_STIPSpecified {
        get {
            return this.curBalance_GPS_STIPFieldSpecified;
        }
        set {
            this.curBalance_GPS_STIPFieldSpecified = value;
            this.RaisePropertyChanged("CurBalance_GPS_STIPSpecified");
        }
    }
    
    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));
        }
    }
}

我将此代码添加到了我的项目中（在其他地方找到）：

public static string ObjectToXml<T>(this T obj) where T : class
{
    var settings = new XmlWriterSettings
    {
        Indent = true,OmitXmlDeclaration = false,Encoding = Encoding.GetEncoding("UTF-8")
    };

    var namespaces = new XmlSerializerNamespaces();
    namespaces.Add(string.Empty,string.Empty);

    var serializer = new XmlSerializer(obj.GetType());

    using (var stringWriter = new StringWriter())
    {
        using (var xmlWriter = XmlWriter.Create(stringWriter,settings))
        {
            serializer.Serialize(xmlWriter,obj,namespaces);
        }
        return stringWriter.ToString();
    }
}

并这样称呼它：

var rtnAck = new ResponseMsg
{
    Responsestatus = "00",CurBalance = 0.5,AvlBalance = 0.5,AckNowledgement = "1",Loadamount = 0.00,CVV2_Result = "test"
};

var rtnData = rtnAck.ObjectToXml();

但是结果字符串是

<?xml version="1.0" encoding="utf-16"?>
<ResponseMsg>
  <Responsestatus xmlns="http://tempuri.org/">00</Responsestatus>
  <AckNowledgement xmlns="http://tempuri.org/">1</AckNowledgement>
  <CVV2_Result xmlns="http://tempuri.org/">test</CVV2_Result>
</ResponseMsg>

我要为其设置值的其他字段在哪里？唯一出现的是string类型，缺少的是double。

此外，如何摆脱每个元素上的xmlns？

解决方法

您看到以“ Specified”结尾的属性吗？这些是存在的，因此可以区分“属性存在”和“属性缺失”的情况。对于字符串属性，它由!= null或== null隐含。

因此对于非字符串属性，如果要序列化值，则需要将... Specified属性设置为true：

var rtnAck = new ResponseMsg
{
    Responsestatus = "00",CurBalance = 0.5,CurBalanceSpecified = true,AvlBalance = 0.5,AvlBalanceSpecified = true,Acknowledgement = "1",LoadAmount = 0.00,LoadAmountSpecified = true,CVV2_Result = "test"
};

这不是非常用户友好，但是XmlSerialization早于Nullable<T>。