C# 如何使用不断变化的XML
场景: 输入:C# 如何使用不断变化的XML,c#,xml-parsing,C#,Xml Parsing,场景: 输入: 一种XML文件,其结构在外部团队的支配下不断变化 它不是一个格式良好的XML 元素标记有时也会更改 所需输出: 由应用程序的其他部分使用的预定义类的对象 问题: 如何使用固定的类名映射更改的元素标记 C语言 enter code here ReadIn("input.xml"); public static GbtInfo ReadIn(string path) { using (XmlReader reader = new XmlTextR
- 一种XML文件,其结构在外部团队的支配下不断变化
- 它不是一个格式良好的XML
- 元素标记有时也会更改
- 由应用程序的其他部分使用的预定义类的对象
- 如何使用固定的类名映射更改的元素标记
enter code here
ReadIn("input.xml");
public static GbtInfo ReadIn(string path)
{
using (XmlReader reader = new XmlTextReader(path))
{
reader.ReadToDescendant("SYSTEM");
return Serializers.ParseNode<GbtInfo>(reader);
}
}
public static T ParseNode<T>(XmlReader reader)
{
Type t = typeof(T);
return (T)ParseNode(t, reader);
}
public static object ParseNode(Type type, XmlReader reader)
{
var instance = Activator.CreateInstance(type);
IXmlSerializable xmlSerializable = instance as IXmlSerializable;
if (xmlSerializable != null)
xmlSerializable.ReadXml(reader);
return instance;
}
public static object ParseNode(string name_space, string elementName, XmlReader reader)
{
Type t = Type.GetType(name_space + "." + elementName, false, true);
return ParseNode(t, reader);
}
public void ReadXml(System.Xml.XmlReader reader)
{
this.reader = reader;
string nextElement;
parent = reader.Name;
PropertyInfo propertyinfo = null;
//Setting a flag if the current node is empty.
bool isEmptyElement = reader.IsEmptyElement;
//Code that parses the attributes out of the Node.
if (reader.HasAttributes)
{
for (int i = 0; i < reader.AttributeCount; i++)
{
reader.MoveToAttribute(i);
nextElement = Utilities.RemoveSpecialChar(reader.Name);
propertyinfo = (GetType()).GetProperty(nextElement, BindingFlags.IgnoreCase | BindingFlags.Public | BindingFlags.Instance);
if (propertyinfo != null)
propertyinfo.SetValue(this, reader.Value, null);
else
PrintError(nextElement);
}
}
if (!isEmptyElement)//if the element is not empty get all the children
{
reader.Read();
Utilities.SkipToContent(reader);
while (!(reader.Name.Equals(parent) && reader.NodeType == XmlNodeType.EndElement))
{
reader.MoveToContent();
//Case when Node Element is an object type with string
if (reader.NodeType == XmlNodeType.Text)
{
propertyinfo = (GetType()).GetProperty("Value", BindingFlags.IgnoreCase | BindingFlags.Public | BindingFlags.Instance);
if (propertyinfo != null)
propertyinfo.SetValue(this, reader.Value, null);
else
PrintError("Value");
//Testing Console.WriteLine(nextelement + " => " + reader.Value);
reader.Read();
Utilities.SkipToContent(reader);
}
if (reader.NodeType == XmlNodeType.Element)
{
nextElement = Utilities.RemoveSpecialChar(reader.Name);
propertyinfo = (GetType()).GetProperty(nextElement, BindingFlags.IgnoreCase | BindingFlags.Public | BindingFlags.Instance);
if (propertyinfo != null)
{
if (propertyinfo.PropertyType.FullName.Equals("System.String"))
{
reader.Read();//read to get the text
if (reader.NodeType != XmlNodeType.Text)
throw new InvalidOperationException("Special Case encountered check XML");
propertyinfo.SetValue(this, reader.Value, null);
//Testing Console.WriteLine(reader.Value);
reader.ReadToNextSibling("dummy");//this will read to the parent end tag
reader.Read();
Utilities.SkipToContent(reader);
}
else
{
System.Collections.IList list = propertyinfo.GetValue(this, null) as System.Collections.IList;
if (list != null)
{
list.Add(Serializers.ParseNode(Namespace, nextElement, reader));
}
else
{
propertyinfo.SetValue(this, Serializers.ParseNode(Namespace, nextElement, reader), null);
}
}
}
else
{
PrintError(nextElement);
reader.ReadToNextSibling();
}
}
}
}
//move to the next element
reader.Read();
Utilities.SkipToContent(reader);
}
// Utilities Method
private void PrintError(string errorElement)
{
IXmlLineInfo info = reader as IXmlLineInfo;
Log.LogIt("The attribute " + errorElement + " does not exist under " + parent + " Error Occurred at Line "
+ info.LineNumber + " Col " + info.LinePosition, LogMessageType.Warning);
info = null;
}
public static XmlReader SkipToContent(XmlReader reader)
{
int count = 0;
while (reader.NodeType != XmlNodeType.Element && reader.NodeType != XmlNodeType.Attribute &&
reader.NodeType != XmlNodeType.EndElement && reader.NodeType != XmlNodeType.Text)
{
reader.Read(); count++;
if (count > 2)
{
//Console.WriteLine(" Stuck");
if (reader.EOF)
{
break;
}
}
}
return reader;
}
/// <summary>
/// Removes special symbols like "-","_","." from Node element name inorder to match it with the respective objects.
/// </summary>
/// <param name="str"></param>
/// <returns></returns>
public static string RemoveSpecialChar(string str)
{
str = str.Replace("-", "");
str = str.Replace(".", "");
str = str.Replace("_", "");
return str;
}
在此处输入代码
ReadIn(“input.xml”);
公共静态GbtInfo ReadIn(字符串路径)
{
使用(XmlReader=新的XmlTextReader(路径))
{
reader.ReadToDescendant(“系统”);
返回Serializers.ParseNode(读取器);
}
}
公共静态解析节点(XmlReader)
{
类型t=类型(t);
return(T)ParseNode(T,reader);
}
公共静态对象ParseNode(类型,XmlReader)
{
var instance=Activator.CreateInstance(类型);
IXmlSerializable xmlSerializable=实例为IXmlSerializable;
if(xmlSerializable!=null)
ReadXml(读取器);
返回实例;
}
公共静态对象ParseNode(string name_space,string elementName,XmlReader)
{
Type t=Type.GetType(name\u space+““+elementName,false,true);
返回ParseNode(t,reader);
}
public void ReadXml(System.Xml.XmlReader)
{
this.reader=读取器;
字符串连接;
parent=reader.Name;
PropertyInfo PropertyInfo=null;
//如果当前节点为空,则设置标志。
bool isEmptyElement=reader.isEmptyElement;
//将属性解析出节点的代码。
if(reader.HasAttributes)
{
for(int i=0;i”+读卡器.Value);
reader.Read();
实用程序。SkipToContent(阅读器);
}
if(reader.NodeType==XmlNodeType.Element)
{
nextElement=Utilities.RemoveSpecialChar(reader.Name);
propertyinfo=(GetType()).GetProperty(nextElement,BindingFlags.IgnoreCase | BindingFlags.Public | BindingFlags.Instance);
if(propertyinfo!=null)
{
if(propertyinfo.PropertyType.FullName.Equals(“System.String”))
{
reader.Read();//读取以获取文本
if(reader.NodeType!=XmlNodeType.Text)
抛出新的InvalidOperationException(“遇到特殊情况检查XML”);
propertyinfo.SetValue(this,reader.Value,null);
//测试控制台.WriteLine(读卡器.Value);
reader.ReadToNextSibling(“dummy”);//这将读取父端标记
reader.Read();
实用程序。SkipToContent(阅读器);
}
其他的
{
System.Collections.IList list=propertyinfo.GetValue(该值为null)作为System.Collections.IList;
如果(列表!=null)
{
Add(Serializers.ParseNode(名称空间、nextElement、reader));
}
其他的
{
propertyinfo.SetValue(this,Serializers.ParseNode(Namespace,nextElement,reader),null);
}
}
}
其他的
{
打印错误(nextElement);
reader.ReadToNextSibling();
}
}
}
}
//移动到下一个元素
reader.Read();
实用程序。SkipToContent(阅读器);
}
//实用方法
私有void打印错误(字符串errorElement)
{
IXmlLineInfo=读卡器为IXmlLineInfo;
Log.LogIt(“在第行“+parent+”下不存在属性“+errorElement+”,出现错误”
+info.LineNumber+“Col”+info.LinePosition,LogMessageType.Warning);
info=null;
}
公共静态XmlReader SkipToContent(XmlReader阅读器)
{
整数计数=0;
while(reader.NodeType!=XmlNodeType.Element&&reader.NodeType!=XmlNodeType.Attribute)&&
reader.NodeType!=XmlNodeType.EndElement&&reader.NodeType!=XmlNodeT