获得网络图片

        let url = NSURL(string: "http://www.ietaiji.com/apppic/1.jpg")

let request = NSURLRequest(URL: url!)

NSURLConnection.sendAsynchronousRequest(request, queue: NSOperationQueue()) { (_, dataResult, e) -> Void in

print(dataResult)

if e == nil{

              dispatch_async(dispatch_get_main_queue(), { () -> Void in

self.imgView1.image = UIImage(data: dataResult!)

              })

            }

        }