C#将XML反序列化为对象:XML文档中存在错误(3、2) [英] C# Deserialize XML to object: There is an error in XML document (3, 2)
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问题描述
我正在尝试将XML反序列化为C#对象
I'm trying to deserialize XML into a C# object
我遇到了错误:XML文档中出现错误(3、2)。
I am getting the error:There is an error in XML document (3, 2).
似乎无法修复它!这是代码:
Cannot seem to fix it! Here is the code:
XSD是:
<?xml version="1.0" encoding="utf-8" ?>
<!--Created with Liquid XML Studio 2012 Developer Edition (Trial) 10.0.2.3955 (http://www.liquid-technologies.com)-->
<xs:schema xmlns:tns="http://www.adamroe.com/xsd/cameras.xsd" elementFormDefault="qualified" targetNamespace="http://www.adamroe.com/xsd/cameras.xsd" xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:element name="CameraBase">
<xs:complexType>
<xs:sequence minOccurs="1" maxOccurs="1">
<xs:element name="Cameras">
<xs:complexType>
<xs:sequence minOccurs="0" maxOccurs="unbounded">
<xs:element name="Camera" type="tns:CameraType" />
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:complexType name="CameraType">
<xs:sequence>
<xs:element name="Make" type="xs:string" />
<xs:element name="Model" type="xs:string" />
<xs:element name="Variable1" type="xs:double" />
<xs:element name="Variable2" type="xs:double" />
</xs:sequence>
</xs:complexType>
</xs:schema>
XML是:
<?xml version="1.0" encoding="utf-8"?>
<!-- Created with Liquid XML Studio 2012 Developer Edition (Trial) 10.0.2.3955 (http://www.liquid-technologies.com) -->
<aroe:CameraBase xmlns:aroe="http://www.adamroe.com/xsd/cameras.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.adamroe.com/xsd/cameras.xsd C:\Users\Adam\Desktop\Cameras.xsd">
<aroe:Cameras>
<aroe:Camera>
<aroe:Make>SONY</aroe:Make>
<aroe:Model>DSC-W130</aroe:Model>
<aroe:Variable1>0.6352</aroe:Variable1>
<aroe:Variable2>22.375</aroe:Variable2>
</aroe:Camera>
<aroe:Camera>
<aroe:Make>Panasonic</aroe:Make>
<aroe:Model>DMC-FX30</aroe:Model>
<aroe:Variable1>0.8869</aroe:Variable1>
<aroe:Variable2>24.73</aroe:Variable2>
</aroe:Camera>
<aroe:Camera>
<aroe:Make>Olympus</aroe:Make>
<aroe:Model>X450</aroe:Model>
<aroe:Variable1>0.6003</aroe:Variable1>
<aroe:Variable2>20.654</aroe:Variable2>
</aroe:Camera>
<aroe:Camera>
<aroe:Make>Fujifilm</aroe:Make>
<aroe:Model>FinePix S9600</aroe:Model>
<aroe:Variable1>1.0024</aroe:Variable1>
<aroe:Variable2>35.704</aroe:Variable2>
</aroe:Camera>
<aroe:Camera>
<aroe:Make>Canon</aroe:Make>
<aroe:Model>EOS 400D</aroe:Model>
<aroe:Variable1>1.5143</aroe:Variable1>
<aroe:Variable2>69.409</aroe:Variable2>
</aroe:Camera>
</aroe:Cameras>
</aroe:CameraBase>
类为:
public class Camera
{
public string Make;
public string Model;
public double Variable1;
public double Variable2;
}
反序列化代码:
public class PopulateXML
{
public void DeserializeObject(string filenameXML)
{
Console.WriteLine("Reading with XmlReader");
// Create an instance of the XmlSerializer specifying type and namespace.
XmlSerializer serializer = new
XmlSerializer(typeof(List<Camera>));
// A FileStream is needed to read the XML document.
FileStream fs = new FileStream(filenameXML, FileMode.Open);
XmlReader reader = new XmlTextReader(fs);
// Declare an object variable of the type to be deserialized.
List<Camera> i;
// Use the Deserialize method to restore the object's state.
i = (List<Camera>)serializer.Deserialize(reader);
}
}
Main:
PopulateXML x = new PopulateXML();
// Read a purchase order.
x.DeserializeObject("Cameras.xml");
抛出异常:i =(List)serializer.Deserialize(reader);
The exception is thrown on: i = (List)serializer.Deserialize(reader);
推荐答案
XmlSerializer serializer = new XmlSerializer(typeof(Camera));
Stream fs = File.OpenRead(filenameXMLpath);
// Use the Deserialize method to restore the object's state.
Camera cam = serializer.Deserialize(fs) as Camera;
这绝对适合您。在您的情况下,它不起作用,因为您将其类型强制转换为不正确的数据类型,即List。每当开发人员类型将反序列化的对象转换为不正确的数据类型时,通常都会弹出此错误。
This will definitely work for you. In your case it was not working because you were type casting it to the incorrect data type i.e., List. This error generally pops-up whenever developer type cast deserialized object to incorrect data type.
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