.net CF中使用XmlTextReader对Xml的解析方法

 

1.         XML的解析方法(XmlTextReader的使用)[yellowpage.xml]

 <?xml version="1.0" encoding="UTF-8"?>

<results count="10" offset="1" total="226">

   <result>

      <ypinfoid>10704462</ypinfoid>

      <title>北京大学</title>

      <phone>01062752114</phone>

      <address>北京市海淀区颐和园路５号</address>

      <coordinates format="WGS-84">

         <latitude>4426974</latitude>

         <longitude>441565</longitude>

      </coordinates>

      <category>A700</category>

   </result>

   <result>

      <ypinfoid>1317519</ypinfoid>

      <title>北京大学邮电所</title>

      <phone>01062613356</phone>

      <address>北京市海淀区颐和园路5号</address>

      <coordinates format="WGS-84">

         <latitude>4427384</latitude>

         <longitude>440632</longitude>

      </coordinates>

   </result>

   <result>

      <ypinfoid>1454200</ypinfoid>

      <title>北京大学医学部</title>

      <phone>01062091114</phone>

      <address>北京市海淀区学院路38号</address>

      <coordinates format="WGS-84">

         <latitude>4426192</latitude>

         <longitude>444850</longitude>

      </coordinates>

   </result>

</results>

 

以上面yellowpage.xml为例所示的xml数据:

A.       方法一: 通过XmlTextReader.EOF流结尾作循环结束标志控制(读取时要顺序读取)

private void ParserXML(XmlTextReader reader)

{

       reader.WhitespaceHandling=WhitespaceHandling.None;

       reader.MoveToContent(); //跳过声明和注释

       if(reader.Name=="results"&&reader.HasAttributes) //读取属性

              ReaderXmlAttribute(reader);      

                reader.MoveToElement(); //返回包含当前属性的结点                   System.Console.WriteLine("***********======"+reader.Name);

              try

              {

                  reader.Read(); //跳过根Results结点

                  int count=0;

                     while(!reader.EOF&&reader.Name!="results")

                     {

                     //     if(reader.Name=="results")break;                              System.Console.WriteLine("====="+reader.Name+(++count).ToString());

//以result开始,即以result开始是一条记录

                            reader.ReadStartElement("result");      

                            reader.ReadStartElement("ypinfoid");

//读取该元素的文本值

                     System.Console.WriteLine("ypinfoid Text=="+reader.ReadString());

                            // ypinfoid的结束标志,并跳入下一节点

                            reader.ReadEndElement();   

                            reader.ReadStartElement("title");

               System.Console.WriteLine("title Text=="+reader.ReadString());

                            reader.ReadEndElement();

                            reader.ReadStartElement("phone");

               System.Console.WriteLine("phone Text=="+reader.ReadString().Trim());

                            reader.ReadEndElement();

                            reader.ReadStartElement("address");    System.Console.WriteLine("address Text=="+reader.ReadString().Trim());

                            reader.ReadEndElement();    

                            if(reader.Name=="coordinates")

                            {

                                   if(reader.HasAttributes)

                                   {            Console.WriteLine("!!!!!!!!!!!!!!!!===attribue==="+reader.GetAttribute(0));

                                   }

reader.ReadStartElement("coordinates"); reader.ReadStartElement("latitude");

       System.Console.WriteLine("latitude Text=="+reader.ReadString());

                            reader.ReadEndElement();                                              

                            reader.ReadStartElement("longitude");

       ystem.Console.WriteLine("longitude Text=="+reader.ReadString());

                            reader.ReadEndElement();                                       

                            reader.ReadEndElement();    

                        }                                  

                            if(reader.Name=="category")

                            {

                                   reader.ReadStartElement("category");

       System.Console.WriteLine("latitude Text=="+reader.ReadString());

                            reader.ReadEndElement();

                     }

                     reader.ReadEndElement();

            }

            if(reader!=null)

            {

                 reader.Close();

           System.Console.WriteLine("Reader Closed State=******");

            }        

            reader=null;  

        }

        catch(Exception e){ }

        }

B.        方法一: 通过XmlTextReader.Read()节点跳进和对名字判断进行循环控制

 

XmlTextReader reader = null;

    try

    {

       //Load the reader with the XML file.

       reader = new XmlTextReader("yellowpage.xml");

     reader.WhitespaceHandling=WhitespaceHandling.None;

        reader.MoveToContent();

             if(reader.HasAttributes)

             {

                  for(int i=0;i<reader.AttributeCount;i++)

                  {

                                reader.MoveToAttribute(i);       Console.WriteLine("Name="+reader.Name+" :"+"value="+reader.Value);

                  }

             }   

             int ii=0;

       //Parse the XML and display the text content of each of the elements.

       while (reader.Read()){

       Console.WriteLine("===========================================");

        Console.WriteLine("##### "+reader.Name+" :: "+(++ii).ToString());

         if (reader.IsStartElement("result")&&!reader.IsEmptyElement)

         {       

             while(reader.Read()&&reader.Name!="result")

                  {

                Console.WriteLine("=========="+reader.Name);               

                         if(reader.IsStartElement()&&!reader.IsEmptyElement)

                         {

                                string subName=reader.Name;                                 

                                if(subName=="coordinates")

                                {

                                       if(reader.HasAttributes)

                                       {

                                              for(int i=0;i<reader.AttributeCount;i++)

                  Console.WriteLine("coordinates Attribute = "+reader.GetAttribute(i));

                                       }          

                                    while(reader.Read()&&reader.Name!="coordinates")

                                  {  

if(reader.IsStartElement("latitude")&&!reader.IsEmptyElement)

                                        {                        

                           Console.WriteLine("latitude text==="+reader.ReadString());

                                         }                                              if(reader.IsStartElement("longitude")&&!reader.IsEmptyElement)

                                        {                                      

                        Console.WriteLine("longitude text==="+reader.ReadString());

                                        }

                                    }

                                }

                         else

                         {

                     string subText=reader.ReadString();                    Console.WriteLine("*******===== "+subText); 

                                if(subName=="ypinfoid")

                                {

                                  Console.WriteLine("ypinfoid text==="+subText);

                                 }                                     

                                 if(subName=="title")

                                  {

                                Console.WriteLine("title text==="+subText);

                                  }

if(subName=="phone")

                                   {

                                    Console.WriteLine("phone text==="+subText);

                                   }

                                   if(subName=="address")

                                    {

                               Console.WriteLine("address text==="+subText);

                                     }

                                    if(subName=="category")

                                    {

                                Console.WriteLine("category text==="+subText);

                                     }

                                 }   

                  }

            }

         }

       }     

     }

finally

     {

        if (reader != null)

          reader.Close();

      }

}

using System;
using System.IO;
using System.Xml;

public class Sample 
...{
  public static void Main()
  ...{
    XmlTextReader reader = null;
    try
    ...{
       //Load the reader with the XML file.
       reader = new XmlTextReader("yellowpage.xml");
           reader.WhitespaceHandling=WhitespaceHandling.None;
      /**//*    
          reader.MoveToContent();
          int count=0;
          while(!reader.EOF)
          {
          //        Console.WriteLine("=======   "+reader.Name);    
              if(reader.MoveToContent()==XmlNodeType.Element&&reader.Name=="ypinfoid")
                  {
                       Console.WriteLine("ypinfoid Text== "+reader.ReadElementString());    
                  }
                  
              else
                  if(reader.MoveToContent()==XmlNodeType.Element&&reader.Name=="title")
                  {
                       Console.WriteLine("title Text== "+reader.ReadElementString());    
                  }
              else    if(reader.MoveToContent()==XmlNodeType.Element&&reader.Name=="phone")
                  {
                       Console.WriteLine("phone Text== "+reader.ReadElementString());    
                  }
                  
              else    if(reader.MoveToContent()==XmlNodeType.Element&&reader.Name=="address")
                  {
                       Console.WriteLine("address Text== "+reader.ReadElementString());    
                  }
              else    if(reader.MoveToContent()==XmlNodeType.Element&&reader.Name=="latitude")
                  {
                       Console.WriteLine("latitude Text== "+reader.ReadElementString());    
                  }
                  
                  else if(reader.MoveToContent()==XmlNodeType.Element&&reader.Name=="longitude")
                  {
                       Console.WriteLine("longitude Text== "+reader.ReadElementString());    
                  }
                  else if(reader.MoveToContent()==XmlNodeType.Element&&reader.Name=="category")
                  {
                       Console.WriteLine("category Text== "+reader.ReadElementString());    
                       Console.WriteLine("============================================  "+(++count).ToString());    
                  }
              else
                  reader.Read();
          }
          */
          
           reader.MoveToContent();
           if(reader.HasAttributes)
           ...{
               for(int i=0;i<reader.AttributeCount;i++)
               ...{
                       reader.MoveToAttribute(i);
                        Console.WriteLine("Name="+reader.Name+"  :"+"value="+reader.Value);
               }
           }    
           int ii=0;
       //Parse the XML and display the text content of each of the elements.
       while (reader.Read())...{
          Console.WriteLine("==================================================================");
           Console.WriteLine("##### "+reader.Name+" :: "+(++ii).ToString());
         if (reader.IsStartElement("result")&&!reader.IsEmptyElement)
         ...{       
                while(reader.Read()&&reader.Name!="result")
                 ...{
                Console.WriteLine("=========="+reader.Name);                
                     if(reader.IsStartElement()&&!reader.IsEmptyElement)
                     ...{
                         string subName=reader.Name;
          //               string subText=reader.ReadElementString();
                             
                         if(subName=="coordinates")
                         ...{
                             if(reader.HasAttributes)
                             ...{
                                 for(int i=0;i<reader.AttributeCount;i++)
                                         Console.WriteLine("coordinates Attribute = "+reader.GetAttribute(i));
                             }           
                             while(reader.Read()&&reader.Name!="coordinates")
                             ...{                       
                                 if(reader.IsStartElement("latitude")&&!reader.IsEmptyElement)
                                 ...{                       
                                    Console.WriteLine("latitude text==="+reader.ReadString());
                                  //    Console.WriteLine("latitude text=== "+subText);
                                 }
                                 if(reader.IsStartElement("longitude")&&!reader.IsEmptyElement)
                                 ...{                           
                                    Console.WriteLine("longitude text==="+reader.ReadString());
                              //        Console.WriteLine("longitude text==="+subText);
                                 }
                             }
                         }
                         else
                         ...{
                     //           reader.Read();
                                     string subText=reader.ReadString();
                                     Console.WriteLine("********************=====  "+subText);  
                               if(subName=="ypinfoid")
                               ...{
                          //         Console.WriteLine("ypinfoid text==="+reader.ReadString());
                                   Console.WriteLine("ypinfoid text==="+subText);
                               }                               
                               if(subName=="title")
                               ...{
                          //         Console.WriteLine("title text==="+reader.ReadString());
                                   Console.WriteLine("title text==="+subText);
                               }
                               
                               if(subName=="phone")
                               ...{
                          //         Console.WriteLine("phone text==="+reader.ReadString());
                                   Console.WriteLine("phone text==="+subText);
                               }
                               
                               if(subName=="address")
                               ...{
                           //        Console.WriteLine("address text==="+reader.ReadString());
                                   Console.WriteLine("address text==="+subText);
                               }
                               
                               if(subName=="category")
                               ...{
                                   //    Console.WriteLine("category text==="+reader.ReadString());
                                       Console.WriteLine("category text==="+subText);
                               }
                          }    
                 } 
            }
         }
       }
      
     } 

     finally 
     ...{
        if (reader != null)
          reader.Close();
      }
  }
  
} // End class

//=======================================================================================//

using System;
using System.Drawing;
using System.Collections;
using System.Windows.Forms;
using System.Data;
using System.IO;
using System.Net;
using System.Threading;
using System.Reflection;
using System.Xml;

public class ParserXml
...{
    private const string TestURL="http://203.81.20.78:8080/yindex/yellowpage?keyword=%E5%8C%97%E4%BA%AC%E5%A4%A7%E5%AD%A6%20&location=%E5%8C%97%E4%BA%AC&rpp=10&search_type=yellowpage&offset=1&hl=31";
    ========联网处理=====================//#region========联网处理=====================//
        private void StartScanURL(string url)
        ...{
            Console.WriteLine("==============================================");
            HttpWebRequest request=null;
            try
            ...{
                request=(HttpWebRequest)WebRequest.Create(url);
                request.Method="GET";
                System.IAsyncResult request_result=request.BeginGetResponse(new System.AsyncCallback(EndScanURL),request);                
            }
            catch(WebException we)...{PrintErrMsg(we.Message);}
            catch(Exception e)...{PrintErrMsg(e.Message);}
            finally
            ...{
                request=null;
            }

        }
        
        private void EndScanURL(System.IAsyncResult aResult)
        ...{
            HttpWebRequest httpRequest=null;
            HttpWebResponse httpResponse=null;
            Stream xmlStream=null;
            XmlTextReader XmlReader=null;
            try
            ...{
                httpRequest=(HttpWebRequest)aResult.AsyncState;
                httpResponse=(HttpWebResponse)httpRequest.EndGetResponse(aResult);
                xmlStream=httpResponse.GetResponseStream();
                XmlReader=new XmlTextReader(xmlStream);
                ParserXML(XmlReader);
            }
            catch(XmlException xmle)...{PrintErrMsg(xmle.Message);}
            catch(Exception e)...{PrintErrMsg(e.Message);}
            finally
            ...{
                if(httpResponse!=null)
                    httpResponse.Close();
                if(xmlStream!=null)
                    xmlStream.Close();
                if(XmlReader!=null)
                    XmlReader.Close();
                XmlReader=null;
                httpRequest=null;
                httpResponse=null;
                xmlStream=null;
            }
        }
#endregion


============解析xml数据=======================//#region ============解析xml数据=======================//
        /**//// <summary>
        /// 解析xml数据
        /// </summary>
        /// <param name="stream"></param>
        private void ParserXML(XmlTextReader reader)
        ...{
            reader.WhitespaceHandling=WhitespaceHandling.None;
            reader.MoveToContent();
            if(reader.Name=="results"&&reader.HasAttributes)
                ReaderXmlAttribute(reader);     
            
            reader.MoveToElement(); //返回包含当前属性的结点

            System.Console.WriteLine("***********======"+reader.Name);    
        try
        ...{
           reader.Read();
           int count=0;
            while(!reader.EOF&&reader.Name!="results")
                ...{
                //    if(reader.Name=="results")break;
                    System.Console.WriteLine("========================================"+reader.Name+(++count).ToString());
                    
                    reader.ReadStartElement("result");
        
                        reader.ReadStartElement("ypinfoid");
                        System.Console.WriteLine("ypinfoid Text=="+reader.ReadString());
                        reader.ReadEndElement();
                        
                        reader.ReadStartElement("title");
                        System.Console.WriteLine("title Text=="+reader.ReadString());
                        reader.ReadEndElement();
                        
                            
                        reader.ReadStartElement("phone"); 
                        System.Console.WriteLine("phone Text=="+reader.ReadString().Trim());
                        reader.ReadEndElement();
                        
                        reader.ReadStartElement("address"); 
                            System.Console.WriteLine("address Text=="+reader.ReadString().Trim());
                        reader.ReadEndElement();
                        
                    if(reader.Name=="coordinates")
                    ...{
                        if(reader.HasAttributes)
                        ...{
                            Console.WriteLine("!!!!!!!!!!!!!!!!!!!!!!!!!!!!===attribue==="+reader.GetAttribute(0));
                        }
                        reader.ReadStartElement("coordinates");
                        
                          reader.ReadStartElement("latitude");
                            System.Console.WriteLine("latitude Text=="+reader.ReadString());
                            reader.ReadEndElement();
                            
                            reader.ReadStartElement("longitude");
                            System.Console.WriteLine("longitude Text=="+reader.ReadString());
                            reader.ReadEndElement();
                        
                    reader.ReadEndElement();    
                    }
                    
                    if(reader.Name=="category")
                    ...{
                        reader.ReadStartElement("category");
                            System.Console.WriteLine("latitude Text=="+reader.ReadString());
                    reader.ReadEndElement();
                    }
                reader.ReadEndElement();    
         }
         
         if(reader!=null)
         ...{
                 reader.Close();
                 System.Console.WriteLine("Reader Closed State=====****************************");
         }
         
         reader=null;
   
      }
      catch(Exception e)...{System.Console.WriteLine(e.Message);}
        }
#endregion ===========================================//
    
    //读取xml结点属性
        private void ReaderXmlAttribute(XmlTextReader reader)
        ...{            
#if true //Debug
            System.Diagnostics.Debug.WriteLine("当前节点名字: "+reader.Name);
            ====Method 1===============//#region====Method 1===============//
            while(reader.MoveToNextAttribute())
            ...{
                Console.WriteLine("{0}={1}",reader.Name,reader.Value);
            }
            #endregion

            ====Method 2===============//#region====Method 2===============//
            for(int i=0;i<reader.AttributeCount;i++)
            ...{
                reader.MoveToAttribute(i);
                Console.WriteLine("Name="+reader.Name+"  :"+"value="+reader.Value);
            }
            #endregion
            
            ====Method 3===============//#region====Method 3===============//
            for(int i=0;i<reader.AttributeCount;i++)
            ...{
                Console.WriteLine("AttributeValue="+reader.GetAttribute(i));
            }
            #endregion

            for(int j=0;j<reader.AttributeCount;j++)
            ...{
                Console.WriteLine("attribute value= "+reader[j]);
            }
#endif     
        }
    
    
     private  void RunThread()
        ...{

        System.Threading.Monitor.Enter(this);
                StartScanURL(TestURL);
        System.Threading.Monitor.Exit(this);

        }
        
    private void PrintErrMsg(string messgage)
        ...{
        //    MessageBox.Show(messgage,"错误提示",MessageBoxButtons.OK,MessageBoxIcon.Exclamation);
            MessageBox.Show(messgage);
#if Debug
                System.Diagnostics.Debug.WriteLine(e.Message);
#endif
        }    
        
        
        public ParserXml()
        ...{
            XmlTextReader reader=new XmlTextReader("yellowpage.xml");
            ParserXML(reader);
            
    //        RunThread();
        //    new Thread(new ThreadStart(RunThread)).Start();
        }
        
    public static void Main()
    ...{        
        new ParserXml();
        
        /**//*
        XmlTextReader reader=new XmlTextReader("TestXml.xml");
        reader.WhitespaceHandling=WhitespaceHandling.None;
        reader.MoveToContent();
        try
        {
           reader.Read();
            while(!reader.EOF)
                {
                    if(reader.Name=="books")break;
                    System.Console.WriteLine("========================================"+reader.Name);
                    
                    reader.ReadStartElement("book");
        
                        reader.ReadStartElement("title");
                        System.Console.WriteLine("Title Text=="+reader.ReadString());
                        reader.ReadEndElement();
                        
                        reader.ReadStartElement("price");
                        System.Console.WriteLine("price Text=="+reader.ReadString());
                        reader.ReadEndElement();
                        
                            
                        reader.ReadStartElement("name"); 
                        System.Console.WriteLine("name Text=="+reader.ReadString().Trim());
                        reader.ReadEndElement();
                        
                        reader.ReadStartElement("adress"); 
                            System.Console.WriteLine("adress Text=="+reader.ReadString().Trim());
                        reader.ReadEndElement();
                        
                    if(reader.Name=="namespace")
                    {
                        reader.ReadStartElement("namespace");
                        
                          reader.ReadStartElement("position");
                            System.Console.WriteLine("position Text=="+reader.ReadString());
                            reader.ReadEndElement();
                            
                            reader.ReadStartElement("kinds");
                            System.Console.WriteLine("kinds Text=="+reader.ReadString());
                            reader.ReadEndElement();
                        
                    reader.ReadEndElement();    
                    }
                reader.ReadEndElement();    
                
         }
         
         if(reader!=null)
         {
                 reader.Close();
                 System.Console.WriteLine("****************************");
         }
         
         reader=null;
   
      }
      catch(Exception e){System.Console.WriteLine(e.Message);}
      */
  }
}