Objective-C JSON-将JSON对象转换为本地对象？

Question

{"status": "FRE", "list": [{"make": "Toyota", "id": 1, "model": "camry", "engine": "Four Cylinder"}{"make": "Ford", "id": 3, "model": "focus", "engine": "Four Cylinder"}]}

如何提取每个“ car ” JSON object并将其放入本机object ？ 我正在使用SBJSON 。 这是我当前的代码，但是当我需要能够遍历每个汽车对象并保存它时，它只能提取一个汽车元素：

NSString *responseString = [request responseString];
     NSString *responseDict = [responseString JSONValue];

     NSArray *keys = [NSArray arrayWithObjects:@"id",@"make",@"model",@"engine", nil];
     NSArray *objects = [NSArray arrayWithObjects:[responseDict valueForKeyPath:@"list.make"],[responseDict valueForKeyPath:@"list.model"],[responseDict valueForKeyPath:@"list.id"],[responseDict valueForKeyPath:@"list.engine"] , nil];

     self.car = [[NSDictionary alloc]initWithObjects:objects forKeys:keys];

Answer 1

无需手动完成所有操作，而使用Jastor- https://github.com/elado/jastor您只需要创建简单的类， initWithDictionary将为您完成整个分配工作。

Answer 2

当您执行[[[request responseString] JSONValue] valueForKey:@"list"]];时，尝试尝试这样的推理[[[request responseString] JSONValue] valueForKey:@"list"]]; 它将返回您的cars列表的数组。

然后，您迭代每个array并将其保存到您的car元素中...

例：

NSArray *arrayCar =  [NSArray arrayWithArray:[[[request responseString] JSONValue] valueForKey:@"list"]];


for (NSDictionary *carDict in arrayCar) {
Car car = [[Car alloc] init]; 
car.id = [carDict valueForKey:@"id"]; 
car.origin= [carDict valueForKey:@"make"];
 ... ... }