iOS get请求的block方法详解手机开发

 //  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);