Swift同步下载数据

戴维营教育代码
01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23	`//HTTP/HTTPS` `//URL:` `[url]http://pic.baike.soso.com/p/20120424/bki-20120424022918-1539307851.jpg[/url]` `//创建一个URL对象` `var` `url` `=` `NSURL(string:` `"/upload/otherpic73/203912.jpg")` `//创建一个HTTP请求` `var request` `=` `NSURLRequest(URL:` `url)` `//发送同步请求，开始下载数据` `var response:` `NSURLResponse?` `var` `error:` `NSError?` `var` `data` `=` `NSURLConnection.sendSynchronousRequest(request,` `returningResponse:` `&response,` `error:` `&error)` `println("\(response):\(error)")` `var httpResponse` `=` `response` `as` `NSHTTPURLResponse` `//数据下载完成` `if` `httpResponse.statusCode` `==` `200` `{` `println("下载了\(data.length)字节")` `data.writeToFile("/Users/cheetah/Desktop/test.jpg",` `atomically:` `true)` `}` `else` `{` `println("下载失败: \(httpResponse.statusCode)")` `}`

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