[英]C# deserializer returns null object
我試圖反序列化 xml,但它返回空對象。 谷歌搜索,我發現它可能是根元素或注釋的問題,所以我試圖改變它 (XmlType, XmlRoot(ElementName="...") 但沒有效果。我在 stackoverflow 上閱讀了幾篇文章但仍然沒有找到解決方案。
我的 XML 是:
<?xml version="1.0" encoding="UTF-8"?>
<VerificationResult>
<Result code="0">TestResult</Result>
<Description code="0000">TestDescription</Description>
<SignatureID>TestSignatureID</SignatureID>
<SigningTime>2019-02-02T14:16:13.186+01:00</SigningTime>
<VerificationTime>2019-02-24T20:48:12Z</VerificationTime>
<SigningCertificate certificateType="testcerttype">
<Subject>CN=TestCN,OU=TestOU,O=TestO,C=TestC</Subject>
<Issuer>CN=Digital Identification CA</Issuer>
<Serial>45371416337571480875599671644328045627</Serial>
<ValidFrom>2018-08-30T10:48:02Z</ValidFrom>
<ValidTo>2021-08-29T10:48:02Z</ValidTo>
<Base64Binary>
base64binaryString
</Base64Binary>
</SigningCertificate>
<RevocationInfo>
<CRL>
<Issuer>TestIssuer</Issuer>
<CRLSerialNumber>9999999</CRLSerialNumber>
<CRLThisUpdate>2019-03-24T10:40:51Z</CRLThisUpdate>
</CRL>
</RevocationInfo>
</VerificationResult>
和班級:
[XmlRoot("VerificationResult")]
public class VerResult
{
[XmlType("Result")]
public class Result
{
[XmlAttribute(AttributeName = "code")]
public string Code { get; set; }
[XmlText]
public string Text { get; set; }
}
[XmlType("Description")]
public class Description
{
[XmlAttribute(AttributeName = "code")]
public string Code { get; set; }
[XmlText]
public string Text { get; set; }
}
[XmlType("SigningCertificate")]
public class SigningCertificate
{
[XmlElement(ElementName = "Subject")]
public string Subject { get; set; }
[XmlElement(ElementName = "Issuer")]
public string Issuer { get; set; }
[XmlElement(ElementName = "Serial")]
public string Serial { get; set; }
[XmlElement(ElementName = "ValidFrom")]
public string ValidFrom { get; set; }
[XmlElement(ElementName = "ValidTo")]
public string ValidTo { get; set; }
[XmlElement(ElementName = "Base64Binary")]
public string Base64Binary { get; set; }
[XmlAttribute(AttributeName = "certificateType")]
public string CertificateType { get; set; }
}
[XmlType("CRL")]
public class CRL
{
[XmlElement(ElementName = "Issuer")]
public string Issuer { get; set; }
[XmlElement(ElementName = "CRLSerialNumber")]
public string CRLSerialNumber { get; set; }
[XmlElement(ElementName = "CRLThisUpdate")]
public string CRLThisUpdate { get; set; }
}
[XmlType("RevocationInfo")]
public class RevocationInfo
{
[XmlElement(ElementName = "CRL")]
public CRL CRL { get; set; }
}
[XmlType("VerificationResult")]
public class VerificationResult
{
[XmlElement(ElementName = "Result")]
public Result Result { get; set; }
[XmlElement(ElementName = "Description")]
public Description Description { get; set; }
[XmlElement(ElementName = "SignatureID")]
public string SignatureID { get; set; }
[XmlElement(ElementName = "SigningTime")]
public string SigningTime { get; set; }
[XmlElement(ElementName = "VerificationTime")]
public string VerificationTime { get; set; }
[XmlElement(ElementName = "SigningCertificate")]
public SigningCertificate SigningCertificate { get; set; }
[XmlElement(ElementName = "RevocationInfo")]
public RevocationInfo RevocationInfo { get; set; }
}
}
下面的反序列化器返回空對象。
public T Deserialize<T>(string input) where T : class
{
System.Xml.Serialization.XmlSerializer ser = new System.Xml.Serialization.XmlSerializer(typeof(T));
using (StringReader sr = new StringReader(input))
{
return (T)ser.Deserialize(sr);
}
}
您可以使用 Visual Studio 的特殊粘貼功能(編輯->選擇性粘貼-> 將XML 粘貼為類從您的 XML 生成相應的類。(當然還有其他方法,例如使用您可能不想要的動態(和不應該)使用)。
但是,如果這樣做,我會得到以下類,這些類可以與您的 XML 正常工作,因此您可能在某處遇到一些命名或結構問題。 (當然,您可以優化生成的類,例如擺脫所有字段,但我希望這會有所幫助):
// NOTE: Generated code may require at least .NET Framework 4.5 or .NET Core/Standard 2.0.
/// <remarks/>
[Serializable()]
[DesignerCategory("code")]
[XmlType(AnonymousType = true)]
[XmlRoot(Namespace = "", IsNullable = false)]
public partial class VerificationResult
{
private VerificationResultResult resultField;
private VerificationResultDescription descriptionField;
private string signatureIDField;
private DateTime signingTimeField;
private DateTime verificationTimeField;
private VerificationResultSigningCertificate signingCertificateField;
private VerificationResultRevocationInfo revocationInfoField;
/// <remarks/>
public VerificationResultResult Result
{
get
{
return this.resultField;
}
set
{
this.resultField = value;
}
}
/// <remarks/>
public VerificationResultDescription Description
{
get
{
return this.descriptionField;
}
set
{
this.descriptionField = value;
}
}
/// <remarks/>
public string SignatureID
{
get
{
return this.signatureIDField;
}
set
{
this.signatureIDField = value;
}
}
/// <remarks/>
public DateTime SigningTime
{
get
{
return this.signingTimeField;
}
set
{
this.signingTimeField = value;
}
}
/// <remarks/>
public DateTime VerificationTime
{
get
{
return this.verificationTimeField;
}
set
{
this.verificationTimeField = value;
}
}
/// <remarks/>
public VerificationResultSigningCertificate SigningCertificate
{
get
{
return this.signingCertificateField;
}
set
{
this.signingCertificateField = value;
}
}
/// <remarks/>
public VerificationResultRevocationInfo RevocationInfo
{
get
{
return this.revocationInfoField;
}
set
{
this.revocationInfoField = value;
}
}
}
/// <remarks/>
[Serializable()]
[DesignerCategory("code")]
[XmlType(AnonymousType = true)]
public partial class VerificationResultResult
{
private byte codeField;
private string valueField;
/// <remarks/>
[XmlAttribute()]
public byte code
{
get
{
return this.codeField;
}
set
{
this.codeField = value;
}
}
/// <remarks/>
[XmlText()]
public string Value
{
get
{
return this.valueField;
}
set
{
this.valueField = value;
}
}
}
/// <remarks/>
[Serializable()]
[DesignerCategory("code")]
[XmlType(AnonymousType = true)]
public partial class VerificationResultDescription
{
private byte codeField;
private string valueField;
/// <remarks/>
[XmlAttribute()]
public byte code
{
get
{
return this.codeField;
}
set
{
this.codeField = value;
}
}
/// <remarks/>
[XmlText()]
public string Value
{
get
{
return this.valueField;
}
set
{
this.valueField = value;
}
}
}
/// <remarks/>
[Serializable()]
[DesignerCategory("code")]
[XmlType(AnonymousType = true)]
public partial class VerificationResultSigningCertificate
{
private string subjectField;
private string issuerField;
private string serialField;
private DateTime validFromField;
private DateTime validToField;
private string base64BinaryField;
private string certificateTypeField;
/// <remarks/>
public string Subject
{
get
{
return this.subjectField;
}
set
{
this.subjectField = value;
}
}
/// <remarks/>
public string Issuer
{
get
{
return this.issuerField;
}
set
{
this.issuerField = value;
}
}
/// <remarks/>
[XmlElement(DataType = "integer")]
public string Serial
{
get
{
return this.serialField;
}
set
{
this.serialField = value;
}
}
/// <remarks/>
public DateTime ValidFrom
{
get
{
return this.validFromField;
}
set
{
this.validFromField = value;
}
}
/// <remarks/>
public DateTime ValidTo
{
get
{
return this.validToField;
}
set
{
this.validToField = value;
}
}
/// <remarks/>
public string Base64Binary
{
get
{
return this.base64BinaryField;
}
set
{
this.base64BinaryField = value;
}
}
/// <remarks/>
[XmlAttribute()]
public string certificateType
{
get
{
return this.certificateTypeField;
}
set
{
this.certificateTypeField = value;
}
}
}
/// <remarks/>
[Serializable()]
[DesignerCategory("code")]
[XmlType(AnonymousType = true)]
public partial class VerificationResultRevocationInfo
{
private VerificationResultRevocationInfoCRL cRLField;
/// <remarks/>
public VerificationResultRevocationInfoCRL CRL
{
get
{
return this.cRLField;
}
set
{
this.cRLField = value;
}
}
}
/// <remarks/>
[Serializable()]
[DesignerCategory("code")]
[XmlType(AnonymousType = true)]
public partial class VerificationResultRevocationInfoCRL
{
private string issuerField;
private uint cRLSerialNumberField;
private DateTime cRLThisUpdateField;
/// <remarks/>
public string Issuer
{
get
{
return this.issuerField;
}
set
{
this.issuerField = value;
}
}
/// <remarks/>
public uint CRLSerialNumber
{
get
{
return this.cRLSerialNumberField;
}
set
{
this.cRLSerialNumberField = value;
}
}
/// <remarks/>
public DateTime CRLThisUpdate
{
get
{
return this.cRLThisUpdateField;
}
set
{
this.cRLThisUpdateField = value;
}
}
}
對於各種元素,您需要實例成員,而不僅僅是類型。 例如:
[XmlRoot("VerificationResult")]
public class VerResult
{
public Result Result { get; set; }
public Description Description { get; set; }
public string SignatureID { get; set; }
public DateTime SigningTime { get; set; }
public DateTime VerificationTime { get; set; }
public SigningCertificate SigningCertificate { get; set; }
public RevocationInfo RevocationInfo { get; set; }
}
(這里我已將嵌套類型移出,以避免命名沖突)
完成后:數據反序列化很好。
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