无法使用 swift JSON 解码器从结构中提取值

unable to extract value from struct using swift JSON Decoder

Click Here for JSON image

请告诉我提取"ranking"值的方法。首先检查图像。

我的结构:

struct Result2 : Codable{
    let rankings : [Myrankings3]

    struct Myrankings3 : Codable{
        let ranking : String
    }
}

JSON代码

do {
    let finalResult = try JSONDecoder().decode(Result2.self, from: data!)
    print(finalResult)        
    // I want to get the value of ranking which is of type string 
}

在根对象(finalResult)中迭代数组rankings

let finalResult = try JSONDecoder().decode(Result2.self, from: data!)
for myRanking in finalResult.rankings {
      print(myRanking.ranking)
}