封装网络工具类

//  HFNetWorkTools.h

#import <Foundation/Foundation.h>

typedef void(^callBack)();

@class AFHTTPSessionManager;

@interface HFNetWorkTools : NSObject

@property(nonatomic,copy)AFHTTPSessionManager *manager;

@property(nonatomic,copy)callBack  block;

+ (instancetype)sharedInstace;

- (void)getHighPingpaiListSuccess:(void(^)(id responseObject)  )success failure:(void (^)(NSError *error))failure;

@end

//HFNetWorkTools.m
#import "HFNetWorkTools.h"

#import "AFNetworking/AFNetworking.h"

static HFNetWorkTools  *instance;

@implementation HFNetWorkTools

+ (instancetype)sharedInstace
{

    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        if (instance == nil)
        {
            instance = [[self alloc]init];

            instance.manager = [AFHTTPSessionManager manager];

            instance.manager.responseSerializer.acceptableContentTypes = [NSSet setWithObjects:@"application/json", @"text/json", @"text/javascript", @"text/html", nil];
            //默认的是二进制  将其换成JSON类型的
            instance.manager.requestSerializer = [AFJSONRequestSerializer serializer];
        }
    });

    return  instance;
}

/**
 *  @param url     url
 *  @param parms   参数
 *  @param success 请求成功
 *  @param failure 请求失败
 */
- (void)PostWithUrl:(NSString *)url parms:(NSDictionary *)parms success:(void(^)(id  responseObject))success failure:(void(^)(NSError *error))failure
{
    [self.manager POST:url parameters:parms progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
        success(responseObject);
    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
        failure(error);
    }];
}

- (void)getHighPingpaiListSuccess:(void(^)(id responseObject)  )success failure:(void (^)(NSError *error))failure
{
    [self PostWithUrl:@"http://iosapi.itcast.cn/car/highcarlist.json.php" parms:@{@"accountid":@"1"} success:^(id responseObject) {
        success(responseObject);
    } failure:^(NSError *error)
    {
        failure(error);
    }];
}
@end

HFModel.h
#import <Foundation/Foundation.h>

@interface HFModel : NSObject

@property(nonatomic,copy)NSString *carBrandId;

@property(nonatomic,copy)NSString *name;

@property(nonatomic,copy)NSString *url;

@end

HFModel.m
#import "HFModel.h"

@implementation HFModel

@end

在viewcontroller中调用网络工具接口
#import "ViewController.h"

#import "HFModel.h"

#import "HFNetWorkTools.h"

#import "AFNetworking.h"

#import "YYModel.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad
{
    [super viewDidLoad];

    //获取网络数据

    [[HFNetWorkTools sharedInstace] getHighPingpaiListSuccess:^(id responseObject)
     {
       // NSLog(@"%@",responseObject);

         //字典转模型
   NSArray *arr =  [NSArray yy_modelArrayWithClass:[HFModel class] json:responseObject[@"data"][@"high"]];

         NSLog(@"%ld",arr.count);

    } failure:^(NSError *error)
    {
        NSLog(@"%@",error);
    }];

}
@end