iOS开发对AFNetworking3.0的二次封装

①封装
创建一个新的类,我暂且命名为HttpRequest
.h文件

#import   
@class AFNetworking;  
@interface HttpRequest : NSObject  
  
+(HttpRequest *)sharedInstance;  
  
-(void)GET:(NSString *)URLString dict:(id)dict succeed:(void (^)(id data))succeed failure:(void (^)(NSError *error))failure;  
  
-(void)POST:(NSString *)URLString dict:(id)dict succeed:(void (^)(id data))succeed failure:(void (^)(NSError *error))failure;  
  
@end  

.m文件

#import "HttpRequest.h"  
#import "AFNetworking.h"  
  
@implementation HttpRequest  
/** 
 *  创建网络请求类的单例 
 */  
static HttpRequest *httpRequest = nil;  
+(HttpRequest *)sharedInstance  
{  
    static dispatch_once_t onceToken;  
    dispatch_once(&onceToken, ^{  
        if (httpRequest == nil) {  
            httpRequest = [[self alloc] init];  
        }  
    });  
    return httpRequest;  
}  
+(instancetype)allocWithZone:(struct _NSZone *)zone  
{  
    static dispatch_once_t onceToken;  
    dispatch_once(&onceToken, ^{  
        if (httpRequest == nil) {  
            httpRequest = [super allocWithZone:zone];  
        }  
    });  
    return httpRequest;  
}  
-(instancetype)copyWithZone:(NSZone *)zone  
{  
    return httpRequest;  
}  
/** 
 *封装AFN的GET请求 
 *@param URLString 网络请求地址 
 *@param dict      参数(可以是字典或者nil) 
 *@param succeed   成功后执行success block 
 *@param failure   失败后执行failure block 
 */  
- (void)GET:(NSString *)URLString dict:(id)dict succeed:(void (^)(id data))succeed failure:(void (^)(NSError *error))failure  
{  
    //创建网络请求管理对象  
    AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];  
    //申明返回的结果是json类型  
    manager.responseSerializer = [AFJSONResponseSerializer serializer];  
    //申明请求的数据是json类型  
    manager.requestSerializer = [AFJSONRequestSerializer serializer];  
    //如果报接受类型不一致请替换一致text/html或别的  
    manager.responseSerializer.acceptableContentTypes = [NSSet setWithObjects:@"text/html", nil nil];  
    //发送网络请求(请求方式为GET)  
    [manager GET:URLString parameters:dict progress:^(NSProgress * _Nonnull downloadProgress) {  
          
    } success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {  
        succeed(responseObject);  
    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {  
        failure(error);  
    }];  
}  
/** 
 *  封装AFN的POST请求 
 * 
 *  @param URLString 网络请求地址 
 *  @param dict      参数(可以是字典或者nil) 
 *  @param succeed   成功后执行success block 
 *  @param failure   失败后执行failure block 
 */  
- (void)POST:(NSString *)URLString dict:(id)dict succeed:(void (^)(id data))succeed failure:(void (^)(NSError *error))failure  
{  
    //创建网络请求管理对象  
    AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];  
    //申明返回的结果是json类型  
    manager.responseSerializer = [AFJSONResponseSerializer serializer];  
    //申明请求的数据是json类型  
    manager.requestSerializer = [AFJSONRequestSerializer serializer];  
    //如果报接受类型不一致请替换一致text/html或别的  
    manager.responseSerializer.acceptableContentTypes = [NSSet setWithObjects:@"text/html", nil nil];  
    //发送网络请求(请求方式为POST)  
    [manager POST:URLString parameters:dict progress:^(NSProgress * _Nonnull uploadProgress) {  
          
    } success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {  
        succeed(responseObject);  
    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {  
        failure(error);  
    }];  
}  
  
@end  

②使用
调用时代码很少,很方便使用(也可以把调用的代码写成代码片段,提高效率)

NSDictionary *dict = [NSDictionary dictionaryWithObjectsAndKeys:<#(nonnull id), ...#>, nil nil];  
HttpRequest *httpRequest = [HttpRequest sharedInstance];  
[httpRequest GET:<#(NSString *)#> dict:dict succeed:^(id data) {  
    NSLog(@"%@", data);  
      
} failure:^(NSError *error) {  
    NSLog(@"%@", error);  
}];  

如果不需要传参数,就不用创建dict了,get请求那里直接写nil就行.
post跟get一样,除了把get改成post,其余地方都不用改动