使用MKNetworkKit函数Demo

一、引入MKNetworkKit

1，添加MKNetworkKit的到工程目录。
2，添加的CFNetwork.Framework，SystemConfiguration.framework，Security.framework和ImageIO.Framework。
3，PCH文件包含MKNetworkKit.h
4，如果您正在构建针对iOS，删除NSAlert + MKNetworkKitAdditions.h文件。
5，如果您正在构建的Mac，删除UIAlertView + MKNetworkKitAdditions.h文件。

二、MKNetworkKit类

1，MKNetworkOperation
2，MKNetworkEngine
3，辅助类（apple' Reachability) and categories,网络以及扩展

1.1 -（MKStoreKit添加应用内购买）对于使用MKNetworkKit，你需要知道的方法由两个类MKNetworkOperation MKNetworkEngine。MKNetworkOperation与ASIHttpRequest相似。这是一个NSOperation的子类，包装你的请求和响应类。创建一个MKNetworkOperation用于管理应用内请求时序等问题。

2.1 -MKNetworkEngine是一个伪单例类，负责管理你的app的网络队列。因此，简单的请求时，你应该直接使用MKNetworkEngine的方法。在更为复杂的定制中，你应该继承它。每一个MKNetworkEngine的子类都有他自己的Reachability对象来通知服务器的连通情况。可以考虑为特别的REST服务器请求都通过继承MKNetworkEngine。因为是伪单例模式，每一个单独的子类的请求，都会通过仅有的队列发送。

MKNetworkEngine *engine = [[MKNetworkEngine alloc] initWithHostName:@"192.168.2.176:9502/api"  
customHeaderFields:nil];  
MKNetworkOperation *op = [engine operationWithPath:@"login.php?userid=admin&userpwd=123" params:nil httpMethod:@"GET"];  
[op onCompletion:^(MKNetworkOperation *operation){  
    NSLog(@"request string: %@",[op responseString]);  
}   
onError:^(NSError *error){  
  
}];  
[engine enqueueOperation:op];

//post
NSMutableDictionary *dic = [[NSMutableDictionary alloc] init];  
  [dic setValue:@"admin" forKey:@"username"];  
  [dic setValue:@"123" forKey:@"password"];  
    
  MKNetworkOperation *op = [engine operationWithPath:@"user.do" params:dic httpMethod:@"POST"];  
    
  [op onCompletion:^(MKNetworkOperation *operation) {  
      NSLog(@"post response string :%@",[op responseString]);                  
  } onError:^(NSError *error) {  
      DLog(@"%@", error);  
  }];  
    
  [engine enqueueOperation:op];

解析json

//接口使用的是天气接口
static MKNetworkEngine *engine;
+(MKNetworkEngine *)defaultEngine{
    if (engine == nil) {

        static dispatch_once_t onceToken;

        dispatch_once(&onceToken, ^{

            engine = [[MKNetworkEngine alloc] initWithHostName:@"m.weather.com.cn"
customHeaderFields:nil];//initWithHostName 只写主机名,不要加http//,代码会自动加上

        });
    }
    return engine;
}

MKNetworkOperation *operation = [engine operationWithPath:@"/data/101010100.html" params:nil httpMethod:@"GET"];
//operationWithPath 写后缀名  使用GET方法

[operation addCompletionHandler:^(MKNetworkOperation *completedOperation) {

//******** 返回json 直接解析json

      id json = [completedOperation responseJSON];     //有现成的返回json方法可直接调用
      NSDictionary *weatherDic = (NSDictionary *)json;//json里面本身就是字典,所以直接把json转换成dictionary 

      NSDictionary *weatherInfo = [weatherDic objectForKey:@"weatherinfo"];

      NSString *city = [weatherInfo objectForKey:@"city"];
      NSString *date_y = [weatherInfo objectForKey:@"date_y"];
      NSString *fl1 = [weatherInfo objectForKey:@"fl1"];
      NSString *fl2 = [weatherInfo objectForKey:@"fl2"];

      self.textlable.text = [NSString stringWithFormat:@"%@ \n %@ \n %@ \n %@",city,date_y,fl1,fl2]; //赋值
//       
NSLog(@"%@",[completedOperation responseJSON]); //返回json

} errorHandler:^(MKNetworkOperation *completedOperation, NSError *error) {

}];
      [engine enqueueOperation:op];
}