ios 对于AFNetworking3.0的基本使用

2022-08-24 17:08:43

AFNetworking在3.0版本中删除了基于 NSURLConnection API的所有支持。AFHTTPRequestOperationManager已经抛弃，所以需要对数据请求进行改动。

Get请求

 //使用代码

 AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];

     manager.responseSerializer = [AFHTTPResponseSerializer serializer];

     [manager GET:url parameters:nil success:^(NSURLSessionDataTask *task, id responseObject) {

         //成功

         NSDictionary *obj = [NSJSONSerialization JSONObjectWithData:responseObject options:NSJSONReadingMutableContainers error:nil];

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

         //失败

     }];

当我们调用get函数之前,我们需要创建一个AFHTTPSessionManager,在之前我们使用的一般是AFHTTPRequestOperationManager.
在调用get请求后,我们一般都不需要干什么了,因为那些繁琐复杂的网络通信都交给他去做了,他首先会调用AFNetworkReachabilityManager验证是否联网.
然后参数序列化,用于网络请求.
调用AFSecurityPolicy类,AFSecurityPolicy用于验证HTTPS请求的证书,简单来说建立连接.
连接建立完成,证书验证成功,开始请求服务器.
从服务器返回数据,解析服务器数据,将数据反序列化.
我们得到data类型的数据,可以使用JSON解析直接解析成字典使用.弃用的类：

    AFURLConnectionOperation

    AFHTTPRequestOperation

    AFHTTPRequestOperationManager

两者之间对比

AFN2.0：

NSURL *URL = [NSURL URLWithString:@""];

NSURLRequest *request = [NSURLRequest requestWithURL:URL];

AFHTTPRequestOperation *op = [[AFHTTPRequestOperation alloc] initWithRequest:request];

op.responseSerializer = [AFJSONResponseSerializer serializer];

[op setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {

        NSLog(@"JSON: %@", responseObject);

} failure:^(AFHTTPRequestOperation *operation, NSError *error) {

        NSLog(@"Error: %@", error);

}];

[[NSOperationQueue mainQueue] addOperation:op];

AFN3.0：

- (void)GETUrl:(NSString *)url parameters:(NSDictionary *)parameters success:(void (^)(id))success failure:(void (^)(NSError *))failure

{

    if (!_sessionGetManager) {

        _sessionGetManager  = [AFHTTPSessionManager manager];

        //设置请求格式

        _sessionGetManager.responseSerializer = [AFJSONResponseSerializer serializer];;

    }

    // 设置请求超时时间

    //    _sessionGetManager.requestSerializer.timeoutInterval = 10;

    //设置允许接受返回数据类型

        _sessionGetManager.responseSerializer.acceptableContentTypes = [NSSet setWithObjects:@"application/json", @"text/html", @"text/json",@"text/plain", @"text/javascript", nil];

    NSLog(@"%@",url);

    [_sessionGetManager GET:url parameters:parameters progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {

        success(responseObject);

    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {

        NSLog(@"********%@",error);

        //        if (task.state == 2) {

        //            return ;

        //        }

        failure(error);

    }];

}

- (void)POSTUrl:(NSString *)url parameters:(NSDictionary *)parameters success:(void (^)(id))success failure:(void (^)(NSError *))failure

{

    if (!_sessionPostManager) {

        _sessionPostManager = [AFHTTPSessionManager manager];

        //接收数据类型 --->JSON

        _sessionPostManager.responseSerializer = [AFJSONResponseSerializer serializer];

    }

    //接收数据类型 --->JSON

    _sessionPostManager.responseSerializer = [AFJSONResponseSerializer serializer];

    //访问超时时间

    _sessionPostManager.requestSerializer.timeoutInterval = .f;

    _sessionPostManager.responseSerializer.acceptableContentTypes = [NSSet setWithObjects:@"application/json", @"text/json", @"text/javascript", @"text/html",@"text/plain",nil];

    NSLog(@"url =%@",url);

    [_sessionPostManager POST:url parameters:parameters progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {

        success(responseObject);

    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {

        NSLog(@"%@",error);

        failure(error);

    }];

}

AFN3.0下载方法：

/**

 *  AFN3.0 下载

 */

- (void)downLoad{

    //1.创建管理者对象

    AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];

    //2.确定请求的URL地址

    NSURL *url = [NSURL URLWithString:@""

//如果报接受类型不一致请替换一致text/html或别的

    manager.responseSerializer.acceptableContentTypes = [NSSet setWithObject:@"text/html"];

]; //3.创建请求对象 NSURLRequest *request = [NSURLRequest requestWithURL:url]; //下载任务 NSURLSessionDownloadTask *task = [manager downloadTaskWithRequest:request progress:^(NSProgress * _Nonnull downloadProgress) { //打印下下载进度 WKNSLog(@"%lf",1.0 * downloadProgress.completedUnitCount / downloadProgress.totalUnitCount); } destination:^NSURL * _Nonnull(NSURL * _Nonnull targetPath, NSURLResponse * _Nonnull response) { //下载地址 WKNSLog(@"默认下载地址:%@",targetPath); //设置下载路径，通过沙盒获取缓存地址，最后返回NSURL对象 NSString *filePath = [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES)lastObject]; return [NSURL URLWithString:filePath];

} completionHandler:^(NSURLResponse * _Nonnull response, NSURL * _Nullable filePath, NSError * _Nullable error) {

        //下载完成调用的方法

        WKNSLog(@"下载完成：");

        WKNSLog(@"%@--%@",response,filePath);

    }];

    //开始启动任务

    [task resume];

}

监测当前网络状态（网络监听）

- (void)AFNetworkStatus{

    //1.创建网络监测者

    AFNetworkReachabilityManager *manager = [AFNetworkReachabilityManager sharedManager];

    /*枚举里面四个状态  分别对应 未知 无网络 数据 WiFi

     typedef NS_ENUM(NSInteger, AFNetworkReachabilityStatus) {

         AFNetworkReachabilityStatusUnknown          = -1,      未知

         AFNetworkReachabilityStatusNotReachable     = 0,       无网络

         AFNetworkReachabilityStatusReachableViaWWAN = 1,       蜂窝数据网络

         AFNetworkReachabilityStatusReachableViaWiFi = 2,       WiFi

     };

     */

    [manager setReachabilityStatusChangeBlock:^(AFNetworkReachabilityStatus status) {

        //这里是监测到网络改变的block  可以写成switch方便

        //在里面可以随便写事件

        switch (status) {

            case AFNetworkReachabilityStatusUnknown:

                WKNSLog(@"未知网络状态");

                break;

            case AFNetworkReachabilityStatusNotReachable:

                WKNSLog(@"无网络");

                break;

            case AFNetworkReachabilityStatusReachableViaWWAN:

                WKNSLog(@"蜂窝数据网");

                break;

            case AFNetworkReachabilityStatusReachableViaWiFi:

                WKNSLog(@"WiFi网络");

                break;

            default:

                break;

        }

    }] ;

}

AFN3.0 上传

/**

 *  AFN 3.0 上传

 *      有两种方式

 *          upLoad1 和 upLoad2

 */

//第一种方法是通过工程中的文件进行上传

- (void)upLoad1{

    //1。创建管理者对象

    AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];

    //2.上传文件

    NSDictionary *dict = @{@"username":@""};

    NSString *urlString = @"";

    [manager POST:urlString parameters:dict constructingBodyWithBlock:^(id<AFMultipartFormData>  _Nonnull formData) {

        //上传文件参数

        UIImage *iamge = [UIImage imageNamed:@"123.png"];

        NSData *data = UIImagePNGRepresentation(iamge);

        //这个就是参数

        [formData appendPartWithFileData:data name:@"file" fileName:@"123.png" mimeType:@"image/png"];

    } progress:^(NSProgress * _Nonnull uploadProgress) {

        //打印下上传进度

        WKNSLog(@"%lf",1.0 *uploadProgress.completedUnitCount / uploadProgress.totalUnitCount);

    } success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {

        //请求成功

        WKNSLog(@"请求成功：%@",responseObject);

    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {

        //请求失败

        WKNSLog(@"请求失败：%@",error);

    }];

}

//第二种是通过URL来获取路径，进入沙盒或者系统相册等等

- (void)upLoda2{

    //1.创建管理者对象

    AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];

    //2.上传文件

    NSDictionary *dict = @{@"username":@""};

    NSString *urlString = @"";

    [manager POST:urlString parameters:dict constructingBodyWithBlock:^(id<AFMultipartFormData>  _Nonnull formData) {

        [formData appendPartWithFileURL:[NSURL fileURLWithPath:@"文件地址"] name:@"file" fileName:@"1234.png" mimeType:@"application/octet-stream" error:nil];

    } progress:^(NSProgress * _Nonnull uploadProgress) {

        //打印下上传进度

        WKNSLog(@"%lf",1.0 *uploadProgress.completedUnitCount / uploadProgress.totalUnitCount);

    } success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {

        //请求成功

        WKNSLog(@"请求成功：%@",responseObject);

    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {

        //请求失败

        WKNSLog(@"请求失败：%@",error);

    }];

}

总结的也不一定全面，还需要各位同僚共同努力，如有什么疑问，请加我扣扣：1123231279

最后附上Github地址：https://github.com/wy08/RequestModel

码农公寓

AFN3.0下载方法：

监测当前网络状态（网络监听）

AFN3.0 上传

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