git下載地址：https://github.com/AFNetworking/AFNetworking

get請求

#import <AFNetworking.h>
AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
manager.responseSerializer = [AFHTTPResponseSerializer serializer];//這句話最好加上
[manager GET:@"請求鏈接" parameters:@"參數(shù)組" progress:^(NSProgress * _Nonnull downloadProgress) {
        //請求進度

}success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
        //請求成功
        NSDictionary *weatherDic = [NSJSONSerialization JSONObjectWithData:responseObject options:NSJSONReadingMutableLeaves error:nil];//把NSData轉(zhuǎn)換成字典類型
        
}failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull   error) {
       //請求失敗
}];

post請求

#import <AFNetworking.h>
AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
manager.responseSerializer = [AFHTTPResponseSerializer serializer];

[manager POST:@"請求鏈接" parameters:@"參數(shù)組" progress:^(NSProgress * _Nonnull uploadProgress) {
        //請求進度
} success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
        //請求成功
        NSDictionary *weatherDic = [NSJSONSerialization JSONObjectWithData:responseObject options:NSJSONReadingMutableLeaves error:nil];
        
} failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
        //請求失敗   
}];

文件下載

#import <AFNetworking.h>
AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
manager.responseSerializer = [AFHTTPResponseSerializer serializer];
    
//下載任務(wù)
NSURLSessionDownloadTask *task = [manager downloadTaskWithRequest:@"請求鏈接" progress:^(NSProgress * _Nonnull downloadProgress) {
        
        //加載進度
        
} destination:^NSURL * _Nonnull(NSURL * _Nonnull targetPath, NSURLResponse * _Nonnull response) {
        //下載存放地址，要返回存放地址(存放地址前面加file://)
        
        return nil;
        
} completionHandler:^(NSURLResponse * _Nonnull response, NSURL * _Nullable filePath, NSError * _Nullable error) {
        
       // 下載完成之后，解壓縮文件
   
}];
[task resume];

文件上傳

#import <AFNetworking.h>
 //創(chuàng)建管理者對象
AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
manager.responseSerializer = [AFHTTPResponseSerializer serializer];
[manager POST:@"請求鏈接" parameters:@"參數(shù)組" constructingBodyWithBlock:^(id<AFMultipartFormData>  _Nonnull formData) {
        //上傳文件參數(shù),dataArray是一個NSData數(shù)組

        if (dataArray.count > 0) {
            for (NSData *imageData in dataArray) {
                [formData appendPartWithFileData:imageData name:dataKey fileName:dataName mimeType:@"image/png"];
            }  
        }
       
} progress:^(NSProgress * _Nonnull uploadProgress) {
       //上傳進度

} success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
        
        //請求成功（返回的是NSData類型的數(shù)據(jù)）
        NSDictionary *weatherDic = [NSJSONSerialization JSONObjectWithData:responseObject options:NSJSONReadingMutableLeaves error:nil];

} failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
        
        //請求失敗
        
}];