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> "; 对于这种内存中的xml字符串，可以用TiXmlDocument类的Parse()接口来直接解析，如下：
TiXmlDocument *pXml = new TiXmlDocument(); pXml->Parse( strXml.c_str() );调用Parse()后，xml字符串就被解析成xml文档树，可以直接调用tinyxml的相关接口来进行操作了。比较完整的代码如下：
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;
}