IOS-网络（小文件下载）

 //

 //  ViewController.m

 //  IOS_0131_小文件下载

 //

 //  Created by ma c on 16/1/31.

 //  Copyright © 2016年 博文科技. All rights reserved.

 //

 #import "ViewController.h"

 @interface ViewController ()

 @end

 @implementation ViewController

 /*

  下载小文件的方式

  1.NSData dataWithContentOfURL

  2.NSURLConnection

  */

 - (void)viewDidLoad {

     [super viewDidLoad];

 }

 - (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event

 {

     [self downloadFile1];

     [self downloadFile2];

 }

 ///1.NSData dataWithContentOfURL

 - (void)downloadFile1

 {

     dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, ), ^{

         NSURL *url = [NSURL URLWithString:@"http://localhost:8080/MJServer/resources/images/minion_01.png"];

         NSData *data = [NSData dataWithContentsOfURL:url];

         NSLog(@"downloadFile1---%ld",data.length);

     });

 }

 ///2.NSURLConnection

 - (void)downloadFile2

 {

     NSURL *url = [NSURL URLWithString:@"http://localhost:8080/MJServer/resources/images/minion_01.png"];

     NSURLRequest *request = [NSURLRequest requestWithURL:url];

     [NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse * _Nullable response, NSData * _Nullable data, NSError * _Nullable connectionError) {

         NSLog(@"downloadFile2---%ld",data.length);

     }];

 }

 @end