尽管采用 json 编码，但不存在必需的参数

Question

我正在使用 alamofire 从 swift 发送一个 http post 请求：

let url = userActivity.webpageURL

    if(url?.description.contains(UniversalLinkHandler().urlPrefix))!
    {
        let keystore = try! EtherKeystore()
        let signedOrder = UniversalLinkHandler().parseURL(url: (url?.description)!)
        let signature = signedOrder.signature.substring(from: 2)
        let parameters: Parameters = [
            "address" : keystore.recentlyUsedWallet?.address.description,
            "indices": signedOrder.order.indices,
            "v" : signature.substring(from: 128),
            "r": signature.substring(from: 0, to: 64),
            "s": signature.substring(from: 64, to: 128)
        ]
        let query = UniversalLinkHandler.paymentServer

        Alamofire.request(
                query,
                method: .post,
                parameters: parameters
        ).responseJSON {
            result in
            print(result)
        }
    }

索引在调试器中显示为正常的 UInt16 数组，但是当发送到服务器时，它说索引数组不存在

服务器是java，使用springboot：

@RequestMapping(value = "/claimToken", method = RequestMethod.POST)
public ResponseEntity getAToken(@RequestParam(value="address") String address,
                                @RequestParam(value="indices") int[] indices,
                                @RequestParam(value = "v") byte v,
                                @RequestParam(value = "r") String r,
                                @RequestParam(value = "s") String s
)

第一个参数地址可以正常工作，但它不适用于 int[] 索引数组

非常感谢任何帮助。

Answer 1

由于是您的 signedOrder.order.indices 数组导致了您的问题，并且这是 [UInt16] 类型，我的建议是：

let indices = signedOrder.order.indices.map(Int.init)
let parameters: Parameters = [
            "address" : keystore.recentlyUsedWallet?.address.description,
            "indices": indices,
            "v" : signature.substring(from: 128),
            "r": signature.substring(from: 0, to: 64),
            "s": signature.substring(from: 64, to: 128)
        ]

映射到Int 可以很好地解决您的问题。