基于AFNetworking 3.0的快速封装

AFNetworking 3.0与2.x之前的版本有重大的改变就是废弃了基于NSURLConnection封装的AFHTTPRequestOperationManager, AFHTTPRequestOperation,AFURLConnectionOperation 三个类.

如果你不小心升级了AFN到3.x,AFHTTPRequestOperationManager相关的方法及无法使用,取而代之的是使用AFHTTPSessionManager，至于为何这样做,简而言之就是NSURLSession 在iOS9+后支持HTTP /2协议,该协议数据传输速度更快更安全。代码如下:

AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
//AFN的网络请求由manager发起, manager的request和resopnse设置要根据服务器的接受和返回的数据进行设置;
/*
  1.manager默认提交请求的数据是二进制的,返回格式是JSON 如果提交数据是JSON的,需要将请求格式设置为AFJSONRequestSerializer
如： manager.responseSerializer = [AFJSONResponseSerializer serializer];
 2.一般的请求格式
AFHTTPRequestSerializer 二进制格式 
AFJSONRequestSerializer JSON
3.返回格式
AFHTTPResponseSerializer 二进制格式 
AFJSONResponseSerializer JSON
返回格式的acceptableContentTypes根据实际修改
*/

    

GET

 AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];

    manager.responseSerializer = [AFJSONResponseSerializer serializer];
    manager.responseSerializer.acceptableContentTypes = [NSSet setWithObject:@"application/json"];
    manager.requestSerializer=[AFJSONRequestSerializer serializer];
    [manager GET:getURL parameters:requestDictionary progress:nil success:^(NSURLSessionDataTask *  task, id   responseObject) {
      
    } failure:^(NSURLSessionDataTask *  task, NSError *  error) {
      
    }];

POST

    AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
    manager.responseSerializer = [AFJSONResponseSerializer serializer];//申明返回的结果是json类型
    manager.responseSerializer.acceptableContentTypes = [NSSet setWithObject:@"application/json"];//如果报接受类型不一致请替换一致text/html或别的
    manager.requestSerializer=[AFJSONRequestSerializer serializer];//申明请求的数据是json类型
    [manager POST:URL parameters:requestDictionary progress:nil success:^(NSURLSessionDataTask *  task, id   responseObject) {

    } failure:^(NSURLSessionDataTask *  task, NSError *  error) {
        
    }];

Upload

AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
    manager.responseSerializer = [AFJSONResponseSerializer serializer];
    manager.responseSerializer.acceptableContentTypes = [NSSet setWithObject:@"application/json"];
    manager.requestSerializer=[AFJSONRequestSerializer serializer];
    [manager POST:URL parameters:requestDictionary constructingBodyWithBlock:^(idformData) {
      [formData appendPartWithFileData:imageData name:@"file" fileName:@"img.png" mimeType:@"image/jpeg"];
    } progress:nil success:^(NSURLSessionDataTask *  task, id   responseObject) {
      
    } failure:^(NSURLSessionDataTask * task, NSError *  error) {
        
    }];