嵌套的for-in循环在JSON数据中搜索与Swift匹配的字符串

import Foundation

// 假设有一个包含JSON数据的字符串
let jsonString = """
{
    "name": "John",
    "age": 30,
    "languages": ["Swift", "JavaScript", "Python"],
    "address": {
        "street": "123 ABC Street",
        "city": "XYZ City"
    }
}
"""

// 将JSON字符串解析为字典
guard let jsonData = jsonString.data(using: .utf8),
      let json = try? JSONSerialization.jsonObject(with: jsonData, options: []) as? [String: Any] else {
    fatalError("Failed to parse JSON")
}

// 目标字符串
let targetString = "Swift"

// 用于存储匹配的字符串
var matchingStrings: [String] = []

// 遍历JSON数据
for (_, value) in json {
    // 检查当前元素是否为字符串类型
    if let stringValue = value as? String {
        // 检查字符串是否与目标字符串匹配
        if stringValue.contains(targetString) {
            matchingStrings.append(stringValue)
        }
    } else if let arrayValue = value as? [String] {
        // 如果当前元素是数组类型，则遍历数组中的每个元素
        for string in arrayValue {
            // 检查字符串是否与目标字符串匹配
            if string.contains(targetString) {
                matchingStrings.append(string)
            }
        }
    }
}

// 输出匹配的字符串
print("匹配的字符串：\(matchingStrings)")