AFN的序列化處理

當(dāng)我們向服務(wù)器發(fā)送一個(gè)請(qǐng)求，服務(wù)器在返回?cái)?shù)據(jù)的時(shí)候會(huì)在內(nèi)部自動(dòng)進(jìn)行反序列化（JSON-->OC）處理，也就是說該框架內(nèi)部會(huì)默認(rèn)將返回的數(shù)據(jù)當(dāng)作JSON處理，而當(dāng)我們請(qǐng)求的數(shù)據(jù)不是JSON數(shù)據(jù)時(shí)，比如xml數(shù)據(jù)、圖片、網(wǎng)頁時(shí)就沒法解析或者發(fā)送回錯(cuò)誤的數(shù)據(jù)，那么這時(shí)我們應(yīng)該怎么辦呢？以下代碼就上述問題一一舉例做了解答，具體代碼如下：

#import "ViewController.h"
#import "AFNetworking.h"
@interface ViewController ()<NSXMLParserDelegate>
@property (weak, nonatomic) IBOutlet UIImageView *imageView;

@end

@implementation ViewController

-(void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
{
    [self httpData2];
}


//要求:傳參數(shù)以JSON的方式來傳參數(shù)
 //manager.requestSerializer = [AFJSONRequestSerializer serializer];

-(void)json{
    //01 創(chuàng)建管理者
    AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];

    NSDictionary *dict = @{@"username":@"wujian",@"pwd":@"wujian",@"type":@"JSON"};

    //02 發(fā)送GET請(qǐng)求
    [manager GET:@"http://120.2512/login" parameters:dict progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
        NSLog(@"success--%@",responseObject);
    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
        NSLog(@"error -- %@",error);
    }];
}

-(void)xml{
    //01 創(chuàng)建管理者
    AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];

    NSDictionary *dict = @{@"type":@"XML"};

    //如果返回的數(shù)據(jù)是XML,那么應(yīng)該修改對(duì)響應(yīng)的處理方式為XML
//    manager.responseSerializer = [AFXMLParserResponseSerializer  serializer];

    //02 發(fā)送GET請(qǐng)求
    [manager GET:@"http://120.812/video" parameters:dict progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
        NSLog(@"success--%@",responseObject);

        //該請(qǐng)求服務(wù)器返回的是XML數(shù)據(jù)
        //而AFN默認(rèn)以JSON的方式來處理XML數(shù)據(jù)

        //01 創(chuàng)建XML解析器
        NSXMLParser *parser = (NSXMLParser *)responseObject;

        //02 設(shè)置代理
        parser.delegate = self;

        //03 開始解析
        [parser parse];

    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
        NSLog(@"error -- %@",error);
    }];
}

-(void)httpData
{
    //01 創(chuàng)建管理者
    AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];

    //如果服務(wù)器返回的數(shù)據(jù)既不是JSON也不是XML,那么久設(shè)置HTTP的解析方式
    manager.responseSerializer = [AFHTTPResponseSerializer serializer];

    //02 發(fā)送GET請(qǐng)求
    [manager GET:@"http://www.baidu.com/uploadImages/2014/062/5FM7VSW8745Y_1000x500.jpg" parameters:nil progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {

        NSLog(@"success--%@",[responseObject class]);
        UIImage *Image = [UIImage imageWithData:responseObject];

        self.imageView.image = Image;

    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
        NSLog(@"error -- %@",error);
    }];

}

-(void)httpData2
{
    //01 創(chuàng)建管理者
    AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];

    //如果服務(wù)器返回的數(shù)據(jù)既不是JSON也不是XML,那么久設(shè)置HTTP的解析方式
    manager.responseSerializer = [AFHTTPResponseSerializer serializer];

    //02 發(fā)送GET請(qǐng)求
    [manager GET:@"http://www.baidu.com" parameters:nil progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {

        NSLog(@"success--%@",[[NSString alloc]initWithData:responseObject encoding:NSUTF8StringEncoding]);


    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
        NSLog(@"error -- %@",error);
    }];

}


#pragma mark NSXMLParserDelegate
-(void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary<NSString *,NSString *> *)attributeDict
{
    NSLog(@"%@---%@",elementName,attributeDict);
}
@end