swift -从URL获取OpenGraph元标签

import Foundation
import SwiftSoup

func getOpenGraphData(from url: URL, completion: @escaping ([String: String]?, Error?) -> Void) {
    let task = URLSession.shared.dataTask(with: url) { (data, response, error) in
        guard let data = data, let html = String(data: data, encoding: .utf8) else {
            completion(nil, error)
            return
        }
        
        do {
            let doc = try SwiftSoup.parse(html)
            var ogData: [String: String] = [:]
            
            let metaTags = try doc.select("meta[property^=og]")
            for tag in metaTags {
                let property = try tag.attr("property")
                let content = try tag.attr("content")
                ogData[property] = content
            }
            
            completion(ogData, nil)
        } catch {
            completion(nil, error)
        }
    }
    
    task.resume()
}

// 使用示例
let url = URL(string: "https://example.com")!
getOpenGraphData(from: url) { (ogData, error) in
    if let ogData = ogData {
        // 打印OpenGraph元标签的内容
        for (property, content) in ogData {
            print("\(property): \(content)")
        }
    } else if let error = error {
        print("获取OpenGraph数据时发生错误：\(error)")
    }
}