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1、认识

在使用之前，先大致了解一下TinyXml2结构，只有清楚地知道这些类都指什么内容，那么在解析任何xml时，都可以很好利用TinyXml2中提供的API。

比如如下的xml：

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

<phonebook>    <!--one item behalfs one contacted person.-->    <item>      <name>sister</name>      <addr>Shaanxi Xi'an</addr>      <tel>13759911917</tel>      <email>miaomiao@home.com</email>    </item>    <item>      <name>xiaoming</name>      <addr>Liaoning Shenyang</addr>      <tel>15840330481</tel>      <email>xiaoming@qq.com</email>    </item>    <!--more contacted persons.--> </phonebook>

结点说明：

TiXmlDeclaration 指的是<?xml version=”1.0″ encoding=”UTF-8″?>，

TiXmlComment 指的是<!–one item behalfs one contacted person.–>、 <!–more contacted persons.–>，

TiXmlDocument 指的是整个xml文档，

TiXmlElement 指的是<phonebook>、<item>、<name>、<addr>等等这些节点，

TiXmlText 指的是‘gougou’、‘15840330481’这些夹在<item>与</item>、<name>与</name>、<addr>与</addr>之间的文本文字，

TiXmlAttribute 指的是<?xml version=”1.0″ encoding=”UTF-8″?>节点中version、encoding，

除此之外就是 TiXmlUnknown。

2、使用

（1）最简单使用

/*//xml格式：
       
    
     XXX
        
    
     XXX
    
   */do{  const char * lpXmlData = response_data;    //需要解析的数据buffer  int32_t      llXmlSize = response_data_size;  //需要解析的size   XMLProtocal       xml;   int avx_success = xml.Open(lpXmlData, llXmlSize);   if (avx_success == 0)   {       printf("open fail!\n");       break;    }    XMLElement * ResponseStatus = xml.RootElement();    if (ResponseStatus == NULL)    {	break;    }    int stateCode = -1;   XMLElement* statusCode = ResponseStatus->FirstChildElement("statusCode");    if (statusCode == NULL ||  == NULL)    {	//...;    }    else   {	stateCode = atoi(statusCode->GetText());	   }   XMLElement* statusString = ResponseStatus->FirstChildElement("statusString");   if (statusString == NULL || statusString->GetText() == NULL)   {	//...;   }   else   {       //使用 statusString->GetText()	   }} while (0);

(2）使用XmlDocument ，纯xml文件

/*xml格式：*//* 
   
    xxx
    
   
    xxx
    
   
    xxx
    
   
    xxx*/do{	const char * lpXmlData = data;	int32_t      llXmlSize = data_size;	XMLProtocal       xmlen;	int avx_success = xmlen.Open(lpXmlData, llXmlSize);	if (avx_success == 0){		printf("open fail!\n");		break;	}	XMLDocument * doc;	doc = xmlen.GetDocument();	const char* TcpHost = doc->FirstChildElement("tcphost")->GetText();	const char* TcpPort = doc->FirstChildElement("tcpport")->GetText();	const char* UdpHost = doc->FirstChildElement("udphost")->GetText();	const char* UdpPort = doc->FirstChildElement("udpport")->GetText();	if (TcpHost)	{	}	if (TcpPort)	{	}	if (UdpHost)	{	}	if (UdpPort)	{	}} while (0);
   

（3）多级多层解析

/*xml格式：
   
    
     
      
       XXX
       
        
         XXX
         
          XXX
         
         
          XXX
         
         
          XXX
         
         
          
            XXX 
          
          
            XXX 
          
          
            XXX 
          
          
            XXX 
          
          
            XXX 
          
          
            XXX 
          
        
       
      ... ...
    
    
     
      XXX
     
     
      XXX
     
    
   *///解析xmldo{	const char * lpXmlData = data;	int32_t      llXmlSize = data_size;	XMLProtocal       xml;	int avx_success = xml.Open(lpXmlData, llXmlSize);	if (avx_success == 0)	{		printf("open fail!\n");		break;	}	XMLElement * homeInfo = xml.RootElement();	if (homeInfo == NULL)	{		break;	}	int state = -1;	XMLElement* ResponseStatus = homeInfo->FirstChildElement("ResponseStatus");	if (ResponseStatus)	{	XMLElement* statusCode = ResponseStatus->FirstChildElement("statusCode");	if (statusCode == NULL || statusCode->GetText() == NULL)	{	}	else	{	     state = atoi(statusCode->GetText());	}	XMLElement* statusString = ResponseStatus->FirstChildElement("statusString");	if (statusString == NULL || statusString->GetText() == NULL)	{	}	else	{	}	}	if (state == 0)  //正确响应	{	     XMLElement* deviceList = homeInfo->FirstChildElement("deviceList");	    if (deviceList == NULL) break;	    XMLNode* device = deviceList->FirstChild();	    while (device)	    {		XMLElement* deviceId = device->FirstChildElement("deviceId");		if (deviceId && deviceId->GetText())		{		}		XMLElement* deviceType = device->FirstChildElement("deviceType");		if (deviceType && deviceType->GetText())		{		}		XMLElement* deviceModel = device->FirstChildElement("deviceModel");		if (deviceModel && deviceModel->GetText())		{		}		XMLElement* deviceName = device->FirstChildElement("deviceName");		if (deviceName && deviceName->GetText())		{		}					XMLElement* deviceStatus = device->FirstChildElement("deviceStatus");		if (deviceStatus && deviceStatus->GetText())		{					}		/*		button		*/		XMLElement* button = device->FirstChildElement("button");		if (button)		{		XMLElement* buttonName = button->FirstChildElement("buttonName");		if (buttonName && buttonName->GetText())		{		}		XMLElement* buttonStatus = button->FirstChildElement("buttonStatus");		if (buttonStatus && buttonStatus->GetText())		{		}		XMLElement* leftButton = button->FirstChildElement("leftButton");		if (leftButton && leftButton->GetText())		{		}		XMLElement* leftStatus = button->FirstChildElement("leftStatus");		if (leftStatus && leftStatus->GetText())		{		}		XMLElement* rightButton = button->FirstChildElement("rightButton");		if (rightButton && rightButton->GetText())		{		}                XMLElement* rightStatus = button->FirstChildElement("rightStatus");		if (rightStatus && rightStatus->GetText())		{		}		}	 device = device->NextSibling();		}	}} while (0);

/*
   
    
     12345y
    
    
     12345u
    
    
     12345v
    
   */XMLElement * shareList = queryShareRemain->FirstChildElement("shareList");if (shareList == NULL) return false;XMLNode * shareId = shareList->FirstChildElement();int i = 0;while (shareId){	XMLElement * shareIdElement = shareId->ToElement();	if (shareIdElement && shareIdElement->GetText())	{		lpShareRemain->kSharedFileList.push_back(shareIdElement->GetText());	}			shareId = shareId->NextSiblingElement();}

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