//  get请求        NSURL * url = [NSURL URLWithString:@"http://192.168.2.119/test2.zip"];        NSURLRequest * requset = [NSURLRequest requestWithURL:url];                //异步方法        NSOperationQueue * queue = [NSOperationQueue mainQueue]        [NSURLConnection sendAsynchronousRequest:requset queue:queue completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) {            NSLog(@"%li",data.length);        NSLog(@"%@", [NSThread currentThread]);        }];                //同步方法    //    NSURL * url = [NSURL URLWithString:@"http://192.168.2.162/logo.php?userName=jereh&pwd=123"];    //    NSURLRequest * requset = [NSURLRequest requestWithURL:url];    //    NSURLResponse * response;    //    NSData * data = [NSURLConnection sendSynchronousRequest:requset returningResponse:&response error:nil];    //    NSLog(@"%li",data.length);