#import "LYAppDelegate.h"#import  
     
      #import "XMLReader.h"#import "JSONKit.h"@implementation LYAppDelegate- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions{    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];    // Override point for customization after application launch.    self.window.backgroundColor = [UIColor whiteColor];    [self.window makeKeyAndVisible];  //  NSURL *url=[NSURL URLWithString:@"http://www.w3school.com.cn/example/xmle/note.xml"];//xml    NSURL *urljson=[NSURL URLWithString:@"http://maps.googleapis.com/maps/api/geocode/json?latlng=39.904299,116.22169&sensor=true"];//json    NSMutableURLRequest* request= [[NSMutableURLRequest alloc]initWithURL:urljson cachePolicy:NSURLRequestReloadIgnoringLocalCacheData timeoutInterval:60];    NSOperationQueue*queue=  [[NSOperationQueue alloc]init];//    [NSURLConnection sendAsynchronousRequest:request queue:queue completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) {//        NSError * error=nil;//        NSDictionary *dic=[XMLReader dictionaryForXMLData:data error:&error];//        NSLog(@"%@",[[[dic objectForKey:@"note"] objectForKey:@"from"] objectForKey:@"text"]);//        //    }];            [NSURLConnection sendAsynchronousRequest:request queue:queue completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) {        NSDictionary * dic=[data objectFromJSONData];         NSLog(@"dic%@",[[dic objectForKey:@"results"][5]objectForKey:@"formatted_address"]);    }];//json解析    return YES;}@end
     

xml的解析我们用XMLReader,json的解析我们用JSONKit,这2库已经同步到百度云了，用的时候去拿，同时JSONkit依赖foundatin框架的libz.dylib所以用的时候必须导入。