今天在嘗試用AFNetworking，但是請(qǐng)求貌似沒(méi)有發(fā)出的樣子@interface TestAFNetworkingClient : AFHTTPClient+ (TestAFNetworkingClient *)sharedClient;@end@implementation TestAFNetworkingClient+ (TestAFNetworkingClient *)sharedClient {    static TestAFNetworkingClient *_sharedClient = nil;    static dispatch_once_t onceToken;    dispatch_once(&onceToken, ^{         _sharedClient = [[TestAFNetworkingClient alloc] initWithBaseURL:[NSURL URLWithString:@"http://example.com/"]];     });         return _sharedClient; } - (id)initWithBaseURL:(NSURL *)url {    self = [super initWithBaseURL:url];    if (!self) {        return nil;     }    return self; }@end@implementation TestAppDelegate- (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];      }             TestAFNetworkingClient *afClient = [TestAFNetworkingClient sharedClient];             [afClient getPath:@"testfile.txt"                    parameters:nil                       success:^(AFHTTPRequestOperation *operation, id responseObject) {                      NSLog(@"Success.");                       }                       failure:^(AFHTTPRequestOperation *operation, NSError *error) {                          NSLog(@"error.");                       }];我換了更簡(jiǎn)單的代碼    AFHTTPClient *client = [AFHTTPClient clientWithBaseURL:[NSURL URLWithString:@"http://baidu.com"]];     [client getPath:@"" parameters:nil success:^(AFHTTPRequestOperation *op, id obj) {NSLog(@"success.");} failure:nil];也是一樣沒(méi)效果偶爾還會(huì)報(bào)錯(cuò) ADDRESPONSE - ADDING TO MEMORY ONLY: http://baidu.com/