网络请求.POST.代理请求.block请求

@interfaceViewController()

/**用来保存数据的data */

@property(nonatomic,strong)NSMutableData*receiveData;

@end

@implementationViewController

- (void)viewDidLoad {

    [superviewDidLoad];

     [selfgetRequest];

//    [self blockRequest];   

//    [self delegateRequest];

//    [self postRequest];

}

// POST请求

- (void)postRequest

{

   //将接口转换为url

   NSURL*url = [NSURLURLWithString:kPostString];

   //请求

   NSMutableURLRequest*request = [[NSMutableURLRequestalloc]initWithURL:urlcachePolicy:0timeoutInterval:10];

   //设置请求方式

    [requestsetHTTPMethod:@"POST"];

   NSString*string =@"date=20131129&startRecord=1&len=5&udid=1234567890&terminalType=Iphone&cid=213";

   NSData*data = [stringdataUsingEncoding:NSUTF8StringEncoding];

   //拼接地址

    [requestsetHTTPBody:data];


    [NSURLConnectionsendAsynchronousRequest:requestqueue:[NSOperationQueuemainQueue]completionHandler:^(NSURLResponse*_Nullableresponse,NSData*_Nullabledata,NSError*_NullableconnectionError) {

       NSLog(@"%@", [[NSStringalloc]initWithData:dataencoding:NSUTF8StringEncoding]);

    }];


}

//代理请求

- (void)delegateRequest

{

   //将接口转换为url

   NSURL*url = [NSURLURLWithString:kUrlString];

   //请求

   NSURLRequest*request = [[NSURLRequestalloc]initWithURL:urlcachePolicy:0timeoutInterval:10];

   //设置代理

   // 1、向服务器发送请求,等待服务器响应

   // 2、服务器返回给我们数据

   // 3、接收数据完毕,开始解析

    [NSURLConnectionconnectionWithRequest:requestdelegate:self];

}

//向服务器发送请求,当服务器接收到响应的时候执行此方法

- (void)connection:(NSURLConnection*)connection didReceiveResponse:(NSURLResponse*)response

{

//    NSLog(@"发送请求,等待服务器响应");

   //初始化容器

   self.receiveData= [NSMutableDatadata];

}

//接收数据

- (void)connection:(NSURLConnection*)connection didReceiveData:(NSData*)data

{

//    NSLog(@"接收数据");

    [self.receiveDataappendData:data];

}

//数据接收完成,此方法用来解析数据

- (void)connectionDidFinishLoading:(NSURLConnection*)connection

{

//    NSLog(@"接收完成");

   NSLog(@"%@", [[NSStringalloc]initWithData:self.receiveDataencoding:NSUTF8StringEncoding]);

}


// block请求

- (void)blockRequest

{

   //将接口转换为url

   NSURL*url = [NSURLURLWithString:kUrlString];

   //请求

   NSURLRequest*request = [[NSURLRequestalloc]initWithURL:urlcachePolicy:NSURLRequestUseProtocolCachePolicytimeoutInterval:10];

   //异步请求

   // NSOperationQueue mainQueue主队列

    [NSURLConnectionsendAsynchronousRequest:requestqueue:[NSOperationQueuemainQueue]completionHandler:^(NSURLResponse*_Nullableresponse,NSData*_Nullabledata,NSError*_NullableconnectionError) {

       NSLog(@"%@", [[NSStringalloc]initWithData:dataencoding:NSUTF8StringEncoding]);

    }];

}

// block请求

- (void)blockRequest

{

   NSURL*url = [NSURLURLWithString:kUrlString];


   NSURLRequest*request = [[NSURLRequestalloc]initWithURL:urlcachePolicy:0timeoutInterval:10];


   //单例创建

   NSURLSession*session = [NSURLSessionsharedSession];


//    NSURLSessionUploadTask、NSURLSessionDataTask、NSURLSessionDownLoadTask这三个方法为NSURLSessionTask的三个子类,分别代表着上传、解析、下载


   NSURLSessionDataTask*task = [sessiondataTaskWithRequest:requestcompletionHandler:^(NSData*_Nullabledata,NSURLResponse*_Nullableresponse,NSError*_Nullableerror) {

//        NSLog(@"%@", [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding]);


       //解析

       NSDictionary*dict = [NSJSONSerializationJSONObjectWithData:dataoptions:NSJSONReadingMutableContainerserror:nil];


       NSArray*array = dict[@"result"][@"lists"];


       for(NSDictionary*dict1inarray) {

           Model*model = [[Modelalloc]init];

            [modelsetValuesForKeysWithDictionary:dict1];

            [self.dataArrayaddObject:model];

        }

       // dispatch_get_main_queue获取主队列

       //回到主队列,刷新表视图

       dispatch_async(dispatch_get_main_queue(), ^{

           //刷新表视图

            [self.tableViewreloadData];

        });


    }];


   //必须执行此方法,要不然不会请求

    [taskresume];

}


//最简单的请求

- (void)getRequest

{

   //将接口转换为URL

   NSURL*url = [NSURLURLWithString:kUrlString];


   //请求

   NSURLRequest*request = [[NSURLRequestalloc]initWithURL:urlcachePolicy:NSURLRequestUseProtocolCachePolicytimeoutInterval:10];


   //发送请求给服务器

   NSData*data = [NSURLConnectionsendSynchronousRequest:requestreturningResponse:nilerror:nil];

   //判断data是否为空

   if(data ==nil) {

       NSLog(@"网络不给力啊");

    }


   //解析

   NSDictionary*dict = [NSJSONSerializationJSONObjectWithData:dataoptions:NSJSONReadingMutableContainerserror:nil];

   NSLog(@"%@", dict);

   //    NSLog(@"%@", [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding]);

}

- (void)didReceiveMemoryWarning {

    [superdidReceiveMemoryWarning];

   // Dispose of any resources that can be recreated.

}

@end

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