使用restkit映射json对象

Question

如何在swift中使用restkit映射这个json？还是客观的？只是不使用coredata。

[{"one":"1","two":"2","three":"3","four":"4"}, {"one":"1","two":"2","three":"3","four":"4"}, {"one":"1","two":"2","three":"3","four":"4"}]

我有这段代码，但它不起作用。

let postMapping: RKObjectMapping = RKObjectMapping(for: GetAddress.self)
postMapping.addAttributeMappings(from: ["one", "two", "three", "four"])

let statusCodes = RKStatusCodeIndexSetForClass(RKStatusCodeClass.successful)
let resDescriptor = RKResponseDescriptor(mapping: postMapping, method: RKRequestMethod.GET, pathPattern: "/test", keyPath: nil, statusCodes: statusCodes)

let url = NSURL(string: "http://test.com/path")
let addURL = "test/code" 

let objectManager = RKObjectManager(baseURL: url as URL!)

objectManager?.addResponseDescriptor(resDescriptor)
objectManager?.getObjectsAtPath(addURL, parameters: nil,
    success: { operation, mappingResult in
        let post: GetClass = mappingResult!.firstObject as! GetClass
        print("one: \(post.one!)")
        print("two: \(post.two!)")
    },
    failure:{ operation, error in
        print("Error loading metric list': \(error!.localizedDescription)")
    }
);