[iOS] dom解析xml数据，拿到<>里面的值

<response result="success" timestamp="1338890206" cityver="1.0">

<ttscity citycode="CHXX0094" url="http://i.apps.sina.cn/tqt/cit/CHXX0094.cit"/>

</response>

GDataXMLDocument *gData = [[GDataXMLDocument
alloc] initWithData:data
options:GDataXMLDocumentKind
error:nil];

// 2. 获得根结点

GDataXMLElement *root = [gData
rootElement];

// 3. 获得想要的结点

NSArray *lists = [root
nodesForXPath:@"ttscity"
error:nil];

GDataXMLElement *ele = lists.lastObject;

NSArray *array2 = ele.attributes;

GDataXMLNode *node = array2.firstObject;

NSString *cityNode = [node stringValue];