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如何制作一个结构或类来快速解码以下类型的 json 结构？我想主要提取报告节点数据！

{
    "earliest": "2020-10-17",
    "latest": "2020-10-28",
    "report": {
        "purchase": {
            "total": 1458600.0,
            "average": 121550.0,
            "min": 600000.0,
            "max": 1600.0
        },
        "sale": {
            "total": 434250.0,
            "average": 144750.0,
            "min": 360000.0,
            "max": 29250.0
        },
        "production": {
            "total": 792030,
            "average": 20308.46153846154,
            "min": 12000,
            "max": 29700
        }
    }
}
4

1 回答 1

0

你只需要构造你的数据并使其符合 Codable：

struct Root: Codable {
    let earliest: String
    let latest: String
    let report: Report
}

struct Report: Codable {
    let purchase: Results
    let sale: Results
    let production: Results
}

struct Results: Codable {
    let total: Int
    let average: Double
    let min: Int
    let max: Int
}

let json = """
{
    "earliest": "2020-10-17",
    "latest": "2020-10-28",
    "report": {
        "purchase": {
            "total": 1458600.0,
            "average": 121550.0,
            "min": 600000.0,
            "max": 1600.0
        },
        "sale": {
            "total": 434250.0,
            "average": 144750.0,
            "min": 360000.0,
            "max": 29250.0
        },
        "production": {
            "total": 792030,
            "average": 20308.46153846154,
            "min": 12000,
            "max": 29700
        }
    }
}
"""

do {
    let report = try JSONDecoder().decode(Root.self, from: .init(json.utf8)).report
    print("report", report)
} catch {
   print(error)
}

报告报告（购买：结果（总计：1458600，平均：121550.0，最小：600000，最大：1600），销售：结果（总计：434250，平均：144750.0，最小：360000，最大：29250），生产：结果（总计: 792030, 平均: 20308.46153846154, 最小: 12000, 最大: 29700))

于 2020-11-28T22:53:05.527 回答