在Swift中显示JSON字符串中的新行

let jsonString = """
{
    "name": "John",
    "age": 30,
    "city": "New York"
}
"""

if let jsonData = jsonString.data(using: .utf8) {
    do {
        let jsonObject = try JSONSerialization.jsonObject(with: jsonData, options: [])
        if let dictionary = jsonObject as? [String: Any] {
            // 处理字典数据
        } else if let array = jsonObject as? [Any] {
            // 处理数组数据
        }
    } catch {
        print("JSON解析错误：\(error)")
    }
}

if let dictionary = jsonObject as? [String: Any] {
    for (key, value) in dictionary {
        print("\(key): \(value)\n")
    }
}

if let array = jsonObject as? [Any] {
    let arrayString = array.map { String(describing: $0) }.joined(separator: "\n")
    print(arrayString)
}