【iOS】AFNetworking

1
- (NSURLSessionDataTask *)GET:(NSString *)URLString
2
                   parameters:(nullable id)parameters
3
                      headers:(nullable NSDictionary <NSString *, NSString *> *)headers
4
                     progress:(nullable void (^)(NSProgress * _Nonnull))downloadProgress
5
                      success:(nullable void (^)(NSURLSessionDataTask * _Nonnull, id _Nullable))success
6
                      failure:(nullable void (^)(NSURLSessionDataTask * _Nullable, NSError * _Nonnull))failure
7
{
8

9
    NSURLSessionDataTask *dataTask = [self dataTaskWithHTTPMethod:@"GET"
10
                                                        URLString:URLString
11
                                                       parameters:parameters
12
                                                          headers:headers
13
                                                   uploadProgress:nil
14
                                                 downloadProgress:downloadProgress
15
                                                          success:success
16
                                                          failure:failure];
17

18
    [dataTask resume];
19

20
    return dataTask;
21
}
22
#### 1. 初始化和配置
23

24

25
首先，要导入AFNetworking头文件
26

27

28
![请添加图片描述](./csdn-151627674-ios-afnetworking-images/02-3daf3946218d4cd78a3cba270e91091c.png)
29

30

31
默认配置设置：
32

33

34
AFHTTPRequestSerializer请求序列化
35
 AFJSONResponseSerializer用于响应序列化
36

37

38
- 初始化Manager：
39

40

41
```objective-c
42
AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
43
//本质上是调用：
44
[[AFHTTPSessionManager alloc] initWithBaseURL:nil sessionConfiguration:nil];

1
manager.requestSerializer = [AFJSONRequestSerializer serializer]; //参数转为 JSON
2
manager.requestSerializer.timeoutInterval = 15; //超时时间
3
[manager.requestSerializer setValue:@"application/json" forHTTPHeaderField:@"Content-Type"]; //自定义Header

1
manager.responseSerializer = [AFJSONResponseSerializer serializer];
2
manager.responseSerializer.acceptableContentTypes = [NSSet setWithObjects:@"application/json", @"text/json", @"text/javascript", @"text/html", nil];

1
// For working with JSON APIs
2
manager.requestSerializer = [AFJSONRequestSerializer serializer];
3
manager.responseSerializer = [AFJSONResponseSerializer serializer];
4

5
// For XML services
6
manager.responseSerializer = [AFXMLParserResponseSerializer serializer];
7

8
// For image downloads
9
manager.responseSerializer = [AFImageResponseSerializer serializer];
10
#### 2. GET请求
11

12

13
![请添加图片描述](./csdn-151627674-ios-afnetworking-images/04-b40054b9749a43b390c9469d87173a62.png)
14

15

16
 示例：提出GET请求：
17

18

19
```objective-c
20
AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
21
manager.responseSerializer = [AFJSONResponseSerializer serializer];
22

23
// 发起 GET 请求
24
[manager GET:urlString parameters:nil headers:nil progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
25
    NSLog(@"数据如下: %@", responseObject);
26
    //接下来可以在这里处理返回的数据
27
} failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
28
    NSLog(@"错误: %@", error);
29
}];

1
#import <AFNetworking/AFNetworking.h>
2

3
- (void)doPostRequest {
4
    //请求 URL
5
    NSString *urlString = @"https://api.example.com/v1/login";
6
    //请求参数
7
    NSDictionary *parameters = @{
8
        @"username": @"Tom",
9
        @"password": @"123456"
10
    };
11
    //创建 manager
12
    AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
13
    manager.requestSerializer = [AFJSONRequestSerializer serializer];
14
    manager.responseSerializer = [AFJSONResponseSerializer serializer];
15

16
    //可以加请求头
17
    [manager.requestSerializer setValue:@"Bearer Aceess_Token"
18
                     forHTTPHeaderField:@"Authorization"];
19
    [manager.requestSerializer setValue:@"application/json"
20
                     forHTTPHeaderField:@"Accept"];
21

22
    //发起 POST 请求
23
    [manager POST:urlString
24
       parameters:parameters
25
          headers:nil
26
         progress:nil
27
          success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
28
              NSLog(@"请求成功: %@", responseObject);
29
          }
30
          failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
31
              NSLog(@"请求失败: %@", error);
32
          }];
33
}