1 #import "ViewController.h"
2
3 @interface ViewController ()
4
5 @property(nonatomic,weak) IBOutlet UIImageView* imageView;
6
7 @end
8
9
10 @implementation ViewController
11
12 - (void)viewDidLoad {
13 [super viewDidLoad];
14 // Do any additional setup after loading the view, typically from a nib.
15 self.imageView.backgroundColor = [UIColor grayColor];
16 }
17
18 -(IBAction)sessionTask:(id)sender{
19
20 NSString* urlStr1 = @"http://iappfree.candou.com:8080/free/applications/limited?currency=rmb&page=3";
21 NSString* urlStr2 = @"http://photo.candou.com/i/114/826ea823e8ffe792a6fda9e126f6c404";
22
23 //进行dataTask 的任务
24 // [self downloadWithDataTask:urlStr1];
25
26 //进行downloadTask 的任务
27 [self downloadWithDownloadTask:urlStr2];
28
29 //上传UploadTask任务
30 // [self uploadWithUploadTask:urlStr1];
31
32 }
33 /**
34 根据职能不同Task有三种子类：
35 NSURLSessionUploadTask：上传用的Task，传完以后不会再下载返回结果；
36 NSURLSessionDownloadTask：下载用的Task,下载内容到硬盘上；
37 NSURLSessionDataTask：可以上传内容，上传完成后再进行下载,存储为NSData格式。
38 */
39 #pragma mark -三种Task任务的基本演示-
40
41 //可以上传内容，上传完成后再进行下载,存储为NSData格式
42 -(void)downloadWithDataTask:(NSString*)urlStr{
43
44 NSURL *url = [NSURL URLWithString:urlStr];
45
46 NSURLRequest *request = [NSURLRequest requestWithURL:url];
47 //使用一个系统默认的会话（缓存策略、cookie、鉴权等使用默认）
48 NSURLSession *session = [NSURLSession sharedSession];
49 //接受数据类的任务
50 NSURLSessionDataTask *dataTask = [session dataTaskWithRequest:request completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
51 NSLog(@"data:%@",data);
52 NSLog(@"response:%@",response);
53 NSLog(@"error:%@",error);
54 }];
55 //执行任务
56 [dataTask resume];
57 }
58
59 //下载用的Task,下载内容到硬盘上
60 -(void)downloadWithDownloadTask:(NSString*)urlStr{
61
62 NSURL *url = [NSURL URLWithString:urlStr];
63
64 // NSURLRequest *request = [NSURLRequest requestWithURL:url cachePolicy:NSURLRequestReturnCacheDataElseLoad timeoutInterval:10];
65 NSURLRequest *request = [NSURLRequest requestWithURL:url];
66 //使用一个系统默认的会话（缓存策略、cookie、鉴权等使用默认）
67 NSURLSession *session = [NSURLSession sharedSession];
68 //下载类的任务
69 NSURLSessionDownloadTask *downloadTask = [session downloadTaskWithRequest:request completionHandler:^(NSURL *location, NSURLResponse *response, NSError *error) {
70
71 NSLog(@"location:%@",location);
72 NSLog(@"response:%@",response);
73 NSLog(@"error:%@",error);
74
75 NSData *data = [NSData dataWithContentsOfURL:location];
76 // self.imageView.image = [UIImage imageWithData:data];
77
78 //获取Document目录
79 NSString *documentPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject];
80 //将字符串路径转换成URL
81 NSURL *documentUrl = [NSURL fileURLWithPath:documentPath];
82 //更改路径，把最后的文件追加到自己设定的路径后，组成新的路径
83 NSURL *newUrl = [documentUrl URLByAppendingPathComponent:[location lastPathComponent]];
84
85 NSLog(@"newUrl:%@",newUrl);
86 //将返给路径的文件夹移动到新的路径下
87 [[NSFileManager defaultManager] moveItemAtURL:location toURL:newUrl error:nil];
88 }];
89 //执行任务
90 [downloadTask resume];
91 }
92
93 //上传用的Task，传完以后不会再下载返回结果
94 -(void)uploadWithUploadTask:(NSString*)urlStr{
95
96 NSURL *url = [NSURL URLWithString:urlStr];
97
98 NSURLRequest *request = [NSURLRequest requestWithURL:url];
99 NSData *data = nil;
100
101 //使用一个系统默认的会话（缓存策略、cookie、鉴权等使用默认）
102 NSURLSession *session = [NSURLSession sharedSession];
103 //上传类的任务
104 NSURLSessionUploadTask *uploadTask = [session uploadTaskWithRequest:request fromData:data completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
105 NSLog(@"data%@",data);
106 NSLog(@"response%@",response);
107 NSLog(@"error%@",error);
108 }];
109 //执行任务
110 [uploadTask resume];
111 }
112
113
114
115 - (void)didReceiveMemoryWarning {
116 [super didReceiveMemoryWarning];
117 // Dispose of any resources that can be recreated.
118 }
119
120 @end
