iOS AFNetworking(网络框架)

AFNetworking

NSURLConnection

---导入头文件"AFHTTPRequestOperationManager.h"

1. 发送GET请求

//发送get请求
- (void)get {
    [[AFHTTPRequestOperationManager manager] GET:@"http://127.0.0.1/demo.json" parameters:nil success:^(AFHTTPRequestOperation * _Nonnull operation, id  _Nonnull responseObject) {
        NSLog(@"%@",responseObject);
        NSLog(@"%@",[responseObject class]);
    } failure:^(AFHTTPRequestOperation * _Nullable operation, NSError * _Nonnull error) {
        NSLog(@"%@",error);
    }];
}

2. 发送GET请求--带参数

//发送get请求，传参数
- (void)get {
    [[AFHTTPRequestOperationManager manager] GET:@"http://127.0.0.1/php/login.php" parameters:@{@"username":@"abc",@"password":@"123"} success:^(AFHTTPRequestOperation * _Nonnull operation, id  _Nonnull responseObject) {
        NSLog(@"%@",responseObject);
    } failure:^(AFHTTPRequestOperation * _Nullable operation, NSError * _Nonnull error) {
        NSLog(@"%@",error);
    }];
}

3. 发送POST请求

//演示post请求
- (void)post {
    [[AFHTTPRequestOperationManager manager] POST:@"http://127.0.0.1/php/login.php" parameters:@{@"username":@"abcd",@"password":@"lalala"} success:^(AFHTTPRequestOperation * _Nonnull operation, id  _Nonnull responseObject) {
        NSLog(@"%@",responseObject);
        
    } failure:^(AFHTTPRequestOperation * _Nullable operation, NSError * _Nonnull error) {
        NSLog(@"%@",error);
    }];
}

4. 上传文件

- (void)post {
    //获取要上传文件的路径
    NSURL *url1 = [[NSBundle mainBundle] URLForResource:@"06.jpg" withExtension:nil];
    NSURL *url2 = [[NSBundle mainBundle] URLForResource:@"01.jpg" withExtension:nil];

    [[AFHTTPRequestOperationManager manager] POST:@"http://127.0.0.1/php/upload/upload-m.php" parameters:@{@"username":@"zhangsan"} constructingBodyWithBlock:^(id  _Nonnull formData) {
        //上传文件
        [formData appendPartWithFileURL:url1 name:@"userfile[]" error:nil];
        [formData appendPartWithFileURL:url2 name:@"userfile[]" error:nil];

    } success:^(AFHTTPRequestOperation * _Nonnull operation, id  _Nonnull responseObject) {
        NSLog(@"%@",responseObject);
    } failure:^(AFHTTPRequestOperation * _Nullable operation, NSError * _Nonnull error) {
        NSLog(@"%@",error);
    }];
}

NSURLSession

---导入头文件"AFHTTPSessionManager.h"

1. 发送GET请求

- (void)get {
    [[AFHTTPSessionManager manager] GET:@"http://127.0.0.1/demo.json" parameters:nil success:^(NSURLSessionDataTask * _Nonnull task, id  _Nonnull responseObject) {
        NSLog(@"%@",responseObject);
    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
        NSLog(@"%@",error);
    }];
}

2. 下载任务

- (void)download {
    NSURL *url = [NSURL URLWithString:@"http://127.0.0.1/abc.hm"];
    NSURLRequest *request = [NSURLRequest requestWithURL:url];
    //进度
    NSProgress *progress = nil;
    [[[AFHTTPSessionManager manager] downloadTaskWithRequest:request progress:&progress destination:^NSURL * _Nonnull(NSURL * _Nonnull targetPath, NSURLResponse * _Nonnull response) {
//        NSLog(@"targetPath -- %@",targetPath);
        NSString *path = [[NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) lastObject] stringByAppendingPathComponent:response.suggestedFilename];
        // 本地文件的URL必须使用这种方式获取
        NSURL *url = [[NSURL alloc] initFileURLWithPath:path];
        //返回要保存文件的路径
        return url;
    } completionHandler:^(NSURLResponse * _Nonnull response, NSURL * _Nullable filePath, NSError * _Nullable error) {
        NSLog(@"%@",filePath);
    }] resume];
    
    //观察progress的某个属性fractionCompleted（进度）是否发生变化
    //KVO
    [progress addObserver:self forKeyPath:@"fractionCompleted" options:NSKeyValueObservingOptionNew context:nil];
}

- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context {
    if ([object isKindOfClass:[NSProgress class]]) {
//        NSLog(@"%@",change);
        NSProgress *progress = object;
        NSLog(@"%@",progress.localizedDescription);
        NSLog(@"%@",progress.localizedAdditionalDescription);
        NSLog(@"completedUnitCount : %zd",progress.completedUnitCount);
        NSLog(@"totalUnitCount : %zd",progress.totalUnitCount);
        NSLog(@"fractionCompleted : %f",progress.fractionCompleted);

        //回到主线程更新UI
        NSLog(@"%@",[NSThread currentThread]);
    }
}

3. 获取网页数据--修改默认的序列化器

- (void)getBaidu {
    AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
    //修改响应的序列化器
    manager.responseSerializer = [AFHTTPResponseSerializer serializer];
    [manager GET:@"http://www.baidu.com" parameters:nil success:^(NSURLSessionDataTask * _Nonnull task, id  _Nonnull responseObject) {
        NSString *html = [[NSString alloc] initWithData:responseObject encoding:NSUTF8StringEncoding];
        NSLog(@"%@",html);
    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
        NSLog(@"%@",error);
    }];
}

4. 解析XML

- (void)getXML {
    AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
    // 设置序列号器为XML，也可修改为AFHTTPResponseSerializer，使用第三方框架解析二进制数据
    manager.responseSerializer = [AFXMLParserResponseSerializer serializer];

    [manager GET:@"http://127.0.0.1/videos.xml" parameters:nil success:^(NSURLSessionDataTask * _Nonnull task, NSXMLParser *responseObject) {
        //解析xml
        responseObject.delegate = self;
        [responseObject parse];
    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
        NSLog(@"%@",error);
    }];
}

//NSXMLParser 的代理方法

- (void)parserDidStartDocument:(NSXMLParser *)parser {
    NSLog(@"1 开始解析");
}

- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict {
    NSLog(@"2 开始节点 %@  %@",elementName,attributeDict);
}

- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string {
    NSLog(@"3 节点之间的内容 %@",string);
}

- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName {
    NSLog(@"4 结束节点 %@",elementName);
}

- (void)parserDidEndDocument:(NSXMLParser *)parser {
    NSLog(@"5 结束解析");
}

- (void)parser:(NSXMLParser *)parser parseErrorOccurred:(NSError *)parseError {
    NSLog(@"6 错误");
}