要解析的xml数据如下：

string  strXml = "		\
<?xml version="1.0" ?>	\
<object>	\
    <string name = "id">145678249</string>	\
    <object name="attrs">	\
        <string name="account">zhou</string>	\
        <array name="to">xia</array>	\
        <string name="subject">test</string>	\
        <string name="content">gan</string>	\
    </object>	\
</object> ";

TiXmlDocument *pXml = new TiXmlDocument();
pXml->Parse( strXml.c_str() );

const char *GetXmlValue(TiXmlHandle *pXmlHandle,char *ElementName,char *ElementAttrName,char *ElementAttrValue)
{
	TiXmlElement *pObjElement = pXmlHandle->FirstChild("object").FirstChild("object").ToElement();
	TiXmlElement *pElement = NULL;
	std::string  strAttrValue;

	for( pElement = pObjElement->FirstChildElement(ElementName); pElement; pElement = pElement->NextSiblingElement(ElementName) )
	{
		//获取当前元素的属性值
		strAttrValue = pElement->Attribute(ElementAttrName);
		if(strAttrValue == ElementAttrValue)
		{
			//获取当前元素的文本内容
			return pElement->GetText();
		}
	}

	return NULL;
}

int main()
{
	TiXmlDocument *pXml = new TiXmlDocument();
	pXml->Parse( strXml.c_str() );
	
	//用TiXmlHandle类来访问Xml文档树(针对xml字符串)
	TiXmlHandle  xmlHandle(pXml); 
	
	//strUser == "zhou"
	string strUser = GetXmlValue(&xmlHandle,"string","name","account");
	//strTo == "xia"
	string strTo = GetXmlValue(&xmlHandle,"to");
	//strSub == "test"
	string strSub = GetXmlValue(&xmlHandle,"subject");
	//strCon == "gan"
	string strCon = GetXmlValue(&xmlHandle,"content");
	
	delete pXml;
}