是否有一种从XML构造类的简单方法。构造的类将用于序列化和反序列化XML。
我有一个XML,其中定义了许多属性和元素。我是否需要根据该XML手动创建我的类?或者是否有可用于从XML生成类的实用工具
谢谢,
也先
答案 0 :(得分:3)
进一步关于威廉的帖子:
这将生成XSD(非数据集)
xsd.exe myCustom.xml
这会生成C#类:
xsd.exe myCustom.xsd /c
答案 1 :(得分:2)
有一个回合路:
使用xsd.exe
,您可以先从xml文件创建一个模式(xsd),然后可以将其用作xsd.exe
的输入,以便从模式生成类。
即(来自命令提示符):
xsd.exe myXmlFile.xml
输出myXmlFile.xsd
和下一个
xsd.exe myXmlFile.xsd
从xsd文件生成类。
答案 2 :(得分:1)
@Willem van Rumpt:解决方案帮我生成课程。但在某些情况下,当我尝试实例化数据集时,我最终收到此异常“同一个表不能是两个嵌套关系中的子表...”
我尝试过使用xmldocument对象导航每个节点并生成可用于序列化和反序列化xml文件的类的不同解决方案。想在这里发布它,以便对寻找类似解决方案的人有所帮助。如果您有优化的解决方案,请发布。
namespace Utility1
{
public static class XMLHelper
{
private enum XMLType
{
Element,
Attribute
}
public static string GenerateXMLClass(string xmlstring)
{
XmlDocument xd = new XmlDocument();
xd.LoadXml(xmlstring);
XmlNode rootNode = xd.DocumentElement;
var xmlClassCollection = new Dictionary<string, XMLClass>();
var xmlClass = new XMLClass();
xmlClassCollection.Add(rootNode.Name, xmlClass);
CollectAttributes(ref xmlClass, rootNode);
CollectElements(ref xmlClass, rootNode);
CollectChildClass(ref xmlClassCollection, rootNode);
var clsBuilder = new StringBuilder();
clsBuilder.AppendLine("[XmlRoot(\"" + rootNode.Name + "\")]");
foreach (var cls in xmlClassCollection)
{
clsBuilder.AppendLine("public class " + cls.Key);
clsBuilder.AppendLine("{");
foreach (var element in cls.Value.Elements)
{
if (XMLType.Element == element.XmlType)
clsBuilder.AppendLine("[XmlElement(\"" + element.Name + "\")]");
else
clsBuilder.AppendLine("[XmlAttribute(\"" + element.Name + "\")]");
clsBuilder.AppendLine("public " + element.Type + element.Name + "{get;set;}");
}
clsBuilder.AppendLine("}");
}
return clsBuilder.ToString();
}
private static void CollectAttributes(ref XMLClass xmlClass, XmlNode node)
{
if (null != node.Attributes)
{
foreach (XmlAttribute attr in node.Attributes)
{
if (null == xmlClass.Elements.SingleOrDefault(o => o.Name == attr.Name))
xmlClass.Elements.Add(new Element("string ", attr.Name, XMLType.Attribute));
}
}
}
private static bool IsEndElement(XmlNode node)
{
if ((null == node.Attributes || node.Attributes.Count <= 0) &&
(null == node.ChildNodes || !node.HasChildNodes || (node.ChildNodes.Count == 1 && node.ChildNodes[0].NodeType == XmlNodeType.Text)))
{
return true;
}
return false;
}
private static void CollectElements(ref XMLClass xmlClass, XmlNode node)
{
foreach (XmlNode childNode in node.ChildNodes)
{
if (null == xmlClass.Elements.SingleOrDefault(o => o.Name == childNode.Name))
{
var occurance = node.ChildNodes.Cast<XmlNode>().Where(o => o.Name == childNode.Name).Count();
var appender = " ";
if (occurance > 1)
appender = "[] ";
if(IsEndElement(childNode))
{
xmlClass.Elements.Add(new Element("string" + appender, childNode.Name, XMLType.Element));
}
else
{
xmlClass.Elements.Add(new Element(childNode.Name + appender, childNode.Name, XMLType.Element));
}
}
}
}
private static void CollectChildClass(ref Dictionary<string, XMLClass> xmlClsCollection, XmlNode node)
{
foreach (XmlNode childNode in node.ChildNodes)
{
if (!IsEndElement(childNode))
{
XMLClass xmlClass;
if (xmlClsCollection.ContainsKey(childNode.Name))
xmlClass = xmlClsCollection[childNode.Name];
else
{
xmlClass = new XMLClass();
xmlClsCollection.Add(childNode.Name, xmlClass);
}
CollectAttributes(ref xmlClass, childNode);
CollectElements(ref xmlClass, childNode);
CollectChildClass(ref xmlClsCollection, childNode);
}
}
}
private class XMLClass
{
public XMLClass()
{
Elements = new List<Element>();
}
public List<Element> Elements { get; set; }
}
private class Element
{
public Element(string type, string name, XMLType xmltype)
{
Type = type;
Name = name;
XmlType = xmltype;
}
public XMLType XmlType { get; set; }
public string Name { get; set; }
public string Type { get; set; }
}
}
}
感谢,
也先