我无法在Swift 3中定义XMLParser

import Foundation

// 创建XML数据
let xmlString = """
<book>
    <title>Swift Programming</title>
    <author>John Doe</author>
</book>
"""

if let data = xmlString.data(using: .utf8) {
    // 创建XMLDocument对象
    if let xmlDoc = try? XMLDocument(data: data, options: .documentTidyXML) {
        // 获取根节点
        if let rootElement = xmlDoc.rootElement() {
            // 遍历子节点
            for child in rootElement.children ?? [] {
                // 获取节点名称
                if let nodeName = child.name {
                    print("Node Name: \(nodeName)")
                }
                
                // 获取节点的属性和值
                if let attributes = child.attributes {
                    for (name, value) in attributes {
                        print("Attribute: \(name) = \(value.stringValue)")
                    }
                }
                
                // 获取节点的文本值
                if let text = child.stringValue {
                    print("Text: \(text)")
                }
            }
        }
    }
}

Node Name: title
Text: Swift Programming
Node Name: author
Text: John Doe