关于XML档案的读取

Question

如下XML文件：
<?xml version="1.0" encoding="utf-8"?>
<INTELLISENSE>
  <Groups>
    <Group Name="CLASS">
      <Variables>
        <Variable Name="ON_ALARM" Desc="" Type="Boolean" />
        <Variable Name="ALARM_RESET_COMMAND" Desc="" Type="Boolean" />
        <Variable Name="C11" Desc="" Type="Boolean" />
        <Variable Name="C12" Desc="" Type="Boolean" />
        <Variable Name="C13" Desc="" Type="Boolean" />
        <Variable Name="C14" Desc="" Type="Boolean" />
        <Variable Name="C15" Desc="" Type="Boolean" />
        <Variable Name="C16" Desc="" Type="Boolean" />
        <Variable Name="C21" Desc="" Type="Boolean" />
        <Variable Name="C22" Desc="" Type="Boolean" />
        <Variable Name="C23" Desc="" Type="Boolean" />
        <Variable Name="C24" Desc="" Type="Boolean" />
        <Variable Name="C25" Desc="" Type="Boolean" />
        <Variable Name="C26" Desc="" Type="Boolean" />
        <Variable Name="C31" Desc="" Type="Boolean" />
        <Variable Name="C32" Desc="" Type="Boolean" />
        <Variable Name="C33" Desc="" Type="Boolean" />
      </Variables>
    </Group>
    <Group Name="EVENT">
      <Variables>
        <Variable Name="CurrentDevice" Type="String" />
        <Variable Name="VR4CommError" Type="Boolean" />
      </Variables>
    </Group>
    <Group Name="FUNCTION">
      <Variables>
        <Variable Name="IDLE_TIME_SECOND" Desc="" Type="UInt16" />
        <Variable Name="IDLE_TIME_HOUR/MINUTE" Desc="" Type="UInt16" />
        <Variable Name="UTILISED_TIME_SECOND" Desc="" Type="UInt16" />
        <Variable Name="UTILISED_TIME_HOUR/MINUTE" Type="UInt16" />
        <Variable Name="OCCUPITE_TIME_SECOND" Desc="" Type="UInt16" />
        <Variable Name="OCCUPITE_TIME_HOUR/MINUTE" Desc="" Type="UInt16" />
        <Variable Name="TOTAL_TIME_FOR_EMERGENCY" Desc="" Type="UInt32" />
      </Variables>
    </Group>
    <Group Name="INTERFACE">
      <Variables>
        <Variable Name="IDLE_TIME_SECOND" Desc="" Type="UInt16" />
        <Variable Name="IDLE_TIME_HOUR/MINUTE" Desc="" Type="UInt16" />
        <Variable Name="UTILISED_TIME_SECOND" Desc="" Type="UInt16" />
        <Variable Name="UTILISED_TIME_HOUR/MINUTE" Type="UInt16" />
        <Variable Name="OCCUPITE_TIME_SECOND" Desc="" Type="UInt16" />
        <Variable Name="OCCUPITE_TIME_HOUR/MINUTE" Desc="" Type="UInt16" />
        <Variable Name="TOTAL_TIME_FOR_EMERGENCY" Desc="" Type="UInt32" />
      </Variables>
    </Group>
    <Group Name="PROPERTY">
      <Variables>
        <Variable Name="IDLE_TIME_SECOND" Desc="" Type="UInt16" />
        <Variable Name="IDLE_TIME_HOUR/MINUTE" Desc="" Type="UInt16" />
        <Variable Name="UTILISED_TIME_SECOND" Desc="" Type="UInt16" />
        <Variable Name="UTILISED_TIME_HOUR/MINUTE" Type="UInt16" />
        <Variable Name="OCCUPITE_TIME_SECOND" Desc="" Type="UInt16" />
        <Variable Name="OCCUPITE_TIME_HOUR/MINUTE" Desc="" Type="UInt16" />
        <Variable Name="TOTAL_TIME_FOR_EMERGENCY" Desc="" Type="UInt32" />
      </Variables>
    </Group>
  </Groups>
</INTELLISENSE>
想从XML中把各个"Name"的值读取出来，并且按Group Name类别，保存成一个Collection，如何才能实现阿？跪求代码

Answer 1

http://www.cnblogs.com/kiddo/archive/2007/09/03/879932.html 

Answer 2

            DataSet ds = new DataSet();
            ds.ReadXml(Server.MapPath("~/xmlFile.xml"));
            DataTable dtGroup = ds.Tables["Group"];
            DataTable dtVariable = ds.Tables["Variable"];

Answer 3

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml.Linq;namespace SimpleTester2.test1 {
    class Class1 : ITest {
        #region ITest 成员
        Dictionary<string , string> datastore = new Dictionary<string , string>(); int  = 0;
        /// <summary>
        /// 想从XML中把各个"Name"的值读取出来，并且按Group Name类别，保存成一个Collection，如何才能实现阿？跪求代码
        /// </summary>
        public void Run() {
            XDocument xd = XDocument.Load("test1/test.xml");
            foreach (XElement item in xd.Descendants()) {
                if (item.Parent != null && item.Parent.Parent != null &&item.Parent.Parent.Attribute("Name")!=null&& item.Parent.Parent.Attribute("Name").Value == "CLASS") {
                    datastore.Add("CLASS"+.ToString() , item.Attribute("Name").Value);
                    ++;
                } else if (item.Parent != null && item.Parent.Parent != null && item.Parent.Parent.Attribute("Name") != null && item.Parent.Parent.Attribute("Name").Value == "EVENT") {
                    datastore.Add("EVENT" + .ToString() , item.Attribute("Name").Value);
                    ++;
                } else if (item.Parent != null && item.Parent.Parent != null && item.Parent.Parent.Attribute("Name") != null && item.Parent.Parent.Attribute("Name").Value == "FUNCTION") {
                    datastore.Add("FUNCTION" + .ToString() , item.Attribute("Name").Value);
                    ++;
                } else if (item.Parent != null && item.Parent.Parent != null && item.Parent.Parent.Attribute("Name") != null && item.Parent.Parent.Attribute("Name").Value == "FUNCTION") {
                    datastore.Add("INTERFACE" + .ToString() , item.Attribute("Name").Value);
                    ++;
                } else if (item.Parent != null && item.Parent.Parent != null && item.Parent.Parent.Attribute("Name") != null && item.Parent.Parent.Attribute("Name").Value == "PROPERTY") {
                    datastore.Add("PROPERTY" + .ToString() , item.Attribute("Name").Value);
                    ++;
                }
            }
            Console.Read();
        }        #endregion
    }

Answer 4

代码有点复杂 ，几处你改一下，我测试过，可以满足你提出的这些要求，结果放到一个字典里取的时候你可以这样foreach(var item in this.dic){
  if(item.Key.SubString(0,item.Key.Length-1)=="CLASS")
  {
      //...
  }
  //...
}

Answer 5

另外可以使用XmlDocument配合 XPath表达式来做

Answer 6

struct XGroupType
        {            public XGroupType(string _GroupName, string _Name)
            {
                GroupName = _GroupName;
                Name = _Name;            }
            string GroupName;
            string Name;            public override string ToString()
            {
                return "GroupName: " + GroupName + " - Name: " + Name;
            }        }
        void readXML()
        {            XmlDocument doc = new XmlDocument();
            doc.Load("c:\\1.xml");
            XmlNodeList list = doc.SelectNodes("/INTELLISENSE/Groups/Group");
            string groupName = "";
            string sName = "";
            XGroupType myType;
            List<XGroupType> myList = new List<XGroupType>();
            foreach (XmlNode node in list)
            {                groupName = node.Attributes["Name"].Value;                foreach (XmlNode oNode in node.SelectNodes("Variables/Variable"))
                {                    sName = oNode.Attributes["Name"].Value;
                    myType = new XGroupType(groupName, sName);
                    myList.Add(myType);                }            }
            //test
            MessageBox.Show(myList.Count.ToString());
            MessageBox.Show(myList[0].ToString());
            MessageBox.Show(myList[1].ToString());
        }
调用：readXML();

Answer 7

看到一篇很好的练习xercesc的例子，和大家分享
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE person SYSTEM "a.dtd"><person>
<people>
<name>陈</name>
<sex>male</sex>
<age>30</age>
</people>
<people>
<name>abched</name>
<sex>female</sex>
<age>1</age>
</people>
</person>声明了一个XML处理类：struct suPerson
{
string _name;
string _sex;
int _age;
};class TParse
{
private:
string _strErrMsg;DOMImplementation *_impl;
DOMBuilder *_parser;
DOMWriter* _writer;
DOMDocument* _doc;
DOMDocument* _newDoc;vector<suPerson> _vecPerson;bool parseNode(DOMNode *n);
public:
TParse();
~TParse();bool parse(const char* strXmlFile);
bool newDoc(const char* strXmlFile);string getErrMsg()
{
return _strErrMsg;
}
vector<suPerson> getVector()
{
return _vecPerson;
}
};类的具体定义如下：#include "Parse.h"TParse::TParse()
{
try 
{
XMLPlatformUtils::Initialize();
}
catch (const XMLException& toCatch) 
{
char* message = XMLString::transcode(toCatch.getMessage());
_strErrMsg = message;
XMLString::release(&message);
throw _strErrMsg;
}
XMLCh tempStr[100];
XMLString::transcode("LS", tempStr, 99);
_impl = DOMImplementationRegistry::getDOMImplementation(tempStr);
_parser = _impl->createDOMBuilder(DOMImplementationLS::MODE_SYNCHRONOUS, 0);_writer = ((DOMImplementationLS*)_impl)->createDOMWriter();// optionally, set some DOMWriter features
// set the format-pretty-print feature
if (_writer->canSetFeature(XMLUni::fgDOMWRTFormatPrettyPrint, true))
_writer->setFeature(XMLUni::fgDOMWRTFormatPrettyPrint, true);// set the byte-order- feature
if (_writer->canSetFeature(XMLUni::fgDOMWRTBOM, true))
_writer->setFeature(XMLUni::fgDOMWRTBOM, true);
}TParse::~TParse()
{
_parser->release();
if (_newDoc)
_newDoc->release();
_writer->release();
}bool TParse::parse(const char* strXmlFile)
{
try 
{
_doc = _parser->parseURI(XMLString::transcode(strXmlFile));
}
catch (const XMLException& toCatch) 
{
char* message = XMLString::transcode(toCatch.getMessage());
_strErrMsg = message;
XMLString::release(&message);
throw _strErrMsg;
}
catch (const DOMException& toCatch) 
{
char* message = XMLString::transcode(toCatch.msg);
_strErrMsg = message;
XMLString::release(&message);
throw _strErrMsg;
}
catch (...) 
{
_strErrMsg = "Unexpected Exception n";
throw _strErrMsg;
}if (!_doc)
{
_strErrMsg = "_doc is null";
return false;
}
DOMNode* n = (DOMNode*)_doc->getDocumentElement();
_vecPerson.clear();if (!n)
{
_strErrMsg = "it is not an legal node";
return false;
}if (n) 
{
if (n->getNodeType() == DOMNode::ELEMENT_NODE)
{
DOMNodeList* nodeList = n->getChildNodes();
unsigned int nListLen = nodeList->getLength();
for (unsigned int i=0; i<nListLen; ++i)
{
DOMNode* nodeTemp = nodeList->item(i);
if (nodeTemp->getNodeType() == DOMNode::ELEMENT_NODE)
{
suPerson suTemp;
memset(&suTemp, 0, sizeof(suTemp));
for (DOMNode* node1=nodeTemp->getFirstChild(); node1!=0; node1=node1->getNextSibling())
{char* name = XMLString::transcode(node1->getNodeName());
string strTemp = name;
if (strTemp == "name")
{
suTemp._name = XMLString::transcode(node1->getFirstChild()->getNodeValue());
node1->getFirstChild()->setNodeValue(XMLString::transcode((suTemp._name+" hello").c_str()));
}
else if (strTemp == "sex")
{
suTemp._sex = XMLString::transcode(node1->getFirstChild()->getNodeValue());
}
else if (strTemp == "age")
{
suTemp._age = XMLString::parseInt(node1->getFirstChild()->getNodeValue());
}XMLString::release(&name);
}
_vecPerson.push_back(suTemp);
}
}}
}
return true;
}//---------------------------------------------------------------------------
bool TParse::newDoc(const char* strXmlFile)
{
try 
{
_newDoc = _impl->createDocument();
}
catch (const XMLException& toCatch) 
{
char* message = XMLString::transcode(toCatch.getMessage());
_strErrMsg = message;
XMLString::release(&message);
throw _strErrMsg;
}
catch (const DOMException& toCatch) 
{
char* message = XMLString::transcode(toCatch.msg);
_strErrMsg = message;
XMLString::release(&message);
throw _strErrMsg;
}
catch (...) 
{
_strErrMsg = "Unexpected Exception n";
throw _strErrMsg;
}DOMElement* root = _newDoc->createElement(XMLString::transcode("person"));
for (unsigned int i=0; i<2; ++i)
{
DOMElement* item = _newDoc->createElement(XMLString::transcode("people"));
DOMElement* name = _newDoc->createElement(XMLString::transcode("name"));
DOMAttr* attr = _newDoc->createAttribute(XMLString::transcode("id"));
attr->setNodeValue(XMLString::transcode("hello"));
name->appendChild(_newDoc->createTextNode(XMLString::transcode("C陈")));
name->setAttributeNode(attr);
DOMElement* sex = _newDoc->createElement(XMLString::transcode("male"));
sex->appendChild(_newDoc->createTextNode(XMLString::transcode("male")));
DOMElement* age = _newDoc->createElement(XMLString::transcode("age"));
age->appendChild(_newDoc->createTextNode(XMLString::transcode("30")));
item->appendChild(name);
item->appendChild(sex);
item->appendChild(age);
root->appendChild(item);
}
_newDoc->appendChild(root);// construct the LocalFileFormatTarget
XMLFormatTarget *myFormatTarget = new LocalFileFormatTarget(strXmlFile);// serialize a DOMNode to the local file "myXMLFile.xml"
_writer->writeNode(myFormatTarget, *_newDoc->getDocumentElement());// optionally, you can flush the buffer to ensure all contents are written
myFormatTarget->flush();// release the memory
delete myFormatTarget;
return true;
}测试代码：#include "Parse.h"int main (int argc, char* args[]) 
{
try
{
TParse parse;
if (!parse.parse("a.xml"))
{
cout << "error: " << parse.getErrMsg() << endl;
}
vector<suPerson> vecTemp = parse.getVector();
for (unsigned int i=0; i<vecTemp.size(); ++i)
{
cout << i << "--------------" << endl;
cout << "name: " << vecTemp[i]._name << endl;
cout << "sex: " << vecTemp[i]._sex << endl;
cout << "age: " << vecTemp[i]._age << endl;
}
cout << "--------------------------------" << endl;
parse.newDoc("b.xml");
}
catch(const string& str)
{
cout << "error: " << str << endl;
}
cin.get();
return 0;
}