用可解码(嵌套数组)解析不同的JSON

Question

我正在使用NiceHash API的应用程序。我必须与这样的JSON合作：

 {
    "result":{
        "addr":"37ezr3FDDbPXWrCSKNfWzcxXZnc7qHiasj",
        "workers":[
                    [ "worker1", { "a":"45.7" }, 9, 1, "32", 0, 14 ],
                    [ "worker1", { }, 5, 1, "100000", 0, 22 ],
        ]
        "algo":-1
    },
    "method":"stats.provider.workers"
}

用于解析这样的结构

struct Root: Decodable {
    var result: WorkersResult?
    var method: String?
}
struct WorkersResult: Decodable {
    var addr: String?
    var workers: [Workers]?
    var algo: Int?
}
struct Workers: Decodable {
    var worker: [Worker]?
}
struct Worker: Decodable {
    var name: String?
    var hashrate: Hashrate?
    var time: Int?
    var XNSUB: Int?
    var difficult: String?
    var reject: Int?
    var algo: Int?
}
struct Hashrate: Decodable {
    var rate: String?
}

响应是相等的，我不明白我在做错了什么，我知道问题是解析工人的阵列，因为如果我对工人评论响应等于某些有效的数据。感谢您的帮助！

Answer 1

您的JSON实际上由于逗号放错了。通过JSON验证器运行到现在的意思。

无论如何，由于Worker（单数）被编码为数组，因此您需要为其提供自定义解码器。Workers（复数）是不必要的。

struct Root: Decodable {
    var result: WorkersResult?
    var method: String?
}
struct WorkersResult: Decodable {
    var addr: String?
    var workers: [Worker]?
    var algo: Int?
}
struct Worker: Decodable {
    var name: String?
    var hashrate: Hashrate?
    var time: Int?
    var XNSUB: Int?
    var difficult: String?
    var reject: Int?
    var algo: Int?
    init(from decoder: Decoder) throws {
        var container = try decoder.unkeyedContainer()
        name      = try container.decodeIfPresent(String.self)
        hashrate  = try container.decodeIfPresent(Hashrate.self)
        time      = try container.decodeIfPresent(Int.self)
        XNSUB     = try container.decodeIfPresent(Int.self)
        difficult = try container.decodeIfPresent(String.self)
        reject    = try container.decodeIfPresent(Int.self)
        algo      = try container.decodeIfPresent(Int.self)
    }
}
struct Hashrate: Decodable {
    var rate: String?
    private enum CodingKeys: String, CodingKey {
        case rate = "a"
    }
}

用法：

let jsonData = """
{
    "result":{
        "addr":"37ezr3FDDbPXWrCSKNfWzcxXZnc7qHiasj",
        "workers":[
                    [ "worker1", { "a":"45.7" }, 9, 1, "32", 0, 14 ],
                    [ "worker1", { }, 5, 1, "100000", 0, 22 ]
        ],
        "algo":-1
    },
    "method":"stats.provider.workers"
}
""".data(using: .utf8)!
let r = try JSONDecoder().decode(Root.self, from: jsonData)
print(r)