objective C xml解析器

// Define the XML Document
NSXMLDocument* doc = [[NSXMLDocument alloc] initWithXMLString:[NSString stringWithContentsOfFile:@"/folder/with/sample.xml"]];
 
// Create the arrays here
NSMutableArray* objects = [[NSMutableArray alloc] initWithCapacity:10];
NSMutableArray* descriptions = [[NSMutableArray alloc] initWithCapacity:10];
 
NSXMLDocument* doc = [[NSXMLDocument alloc] init...];
NSXMLElement* root  = [doc rootElement];
NSArray* objectElements = [root nodesForXPath:@"//object" error:nil];
for(NSXMLElement* xmlElement in objectElements)
    [objects addObject:[xmlElement stringValue]];
 
NSArray* descElements = [root nodesForXPath:@"//description" error:nil];
for(NSXMLElement* xmlElement in descElements)
    [descriptions addObject:[xmlElement stringValue]];
 
[doc release];
[objects release];
[descriptions release];