UploadTask-04-网络上传任务

  1 //
  2 //  ViewController.m
  3 //  04-UploadTask
  4 //
  5 #import "ViewController.h"
  6
  7 #define Boundary @"AaB03x"
  8
  9 @interface ViewController ()
 10
 11 @end
 12
 13 @implementation ViewController
 14
 15 - (void)viewDidLoad {
 16     [super viewDidLoad];
 17     // Do any additional setup after loading the view, typically from a nib.
 18 }
 19
 20 - (void)didReceiveMemoryWarning {
 21     [super didReceiveMemoryWarning];
 22     // Dispose of any resources that can be recreated.
 23 }
 24 /*
 25  HTTP请求头：
 26  ....
 27  multipart/form-data; charset=utf-8;boundary=AaB03x
 28  ....
 29
 30  HTTP请求体：
 31  --AaB03x
 32  Content-Disposition: form-data; name="key1"
 33
 34  value1
 35  --AaB03x
 36  Content-disposition: form-data; name="key2"
 37
 38  value2
 39  --AaB03x
 40  Content-disposition: form-data; name="key3"; filename="file"
 41  Content-Type: application/octet-stream
 42
 43  图片数据...
 44  --AaB03x--
 45 2.00hd363CtKpsnBedca9b3f35tBYiPD
 46  */
 47 - (NSData *)buildBodyData:(NSData *)imgData {
 48
 49     NSString *accessToken = @"2.00hd363CtKpsnBedca9b3f35tBYiPD";
 50     NSString *statusValue = @"我发美女图片";
 51
 52     //1.设置status
 53     NSMutableString *bodyStr = [NSMutableString string];
 54     [bodyStr appendFormat:@"--%@\r\n", Boundary];
 55
 56     [bodyStr appendFormat:@"Content-Disposition: form-data; name=\"status\"\r\n\r\n"];
 57     [bodyStr appendFormat:@"%@\r\n", statusValue];
 58
 59     //2.设置accessToken
 60     [bodyStr appendFormat:@"--%@\r\n", Boundary];
 61
 62     [bodyStr appendFormat:@"Content-Disposition: form-data; name=\"access_token\"\r\n\r\n"];
 63     [bodyStr appendFormat:@"%@\r\n", accessToken];
 64
 65     //3.设置Image
 66     [bodyStr appendFormat:@"--%@\r\n", Boundary];
 67
 68     [bodyStr appendFormat:@"Content-Disposition: form-data; name=\"pic\"; filename=\"1.jpg\"\r\nContent-Type: application/octet-stream\r\n\r\n"];
 69
 70     NSMutableData *totalData = [NSMutableData data];
 71     NSData *textData = [bodyStr dataUsingEncoding:NSUTF8StringEncoding];
 72
 73     //拼前面所有字符串
 74     [totalData appendData:textData];
 75
 76     //拼图片数据
 77     [totalData appendData:imgData];
 78
 79     NSString *endBoundary = [NSString stringWithFormat:@"\r\n--%@--\r\n", Boundary];
 80
 81     [totalData appendData:[endBoundary dataUsingEncoding:NSUTF8StringEncoding]];
 82
 83     return totalData;
 84
 85
 86 }
 87
 88
 89
 90 - (IBAction)uploadAction:(id)sender {
 91
 92     NSURL *url = [NSURL URLWithString:@"https://upload.api.weibo.com/2/statuses/upload.json"];
 93
 94     //构造request
 95     NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
 96     request.HTTPMethod = @"POST";
 97     request.URL = url;
 98     request.timeoutInterval = 60;
 99
100     //设置请求头
101     NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; charset=utf-8;boundary=%@", Boundary];
102     [request setValue:contentType forHTTPHeaderField:@"Content-Type"];
103
104     //图片数据
105     NSString *imgPath = [[NSBundle mainBundle] pathForResource:@"1" ofType:@"jpg"];
106     NSData *imgData = [NSData dataWithContentsOfFile:imgPath];
107
108     NSData *uploadData = [self buildBodyData:imgData];
109
110     NSURLSession *session = [NSURLSession sharedSession];
111
112     NSURLSessionUploadTask *uploadTask = [session uploadTaskWithRequest:request fromData:uploadData completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {
113
114         NSLog(@"response:%@", response);
115
116
117
118     }];
119
120     [uploadTask resume];
121
122
123
124 }
125 @end