引入代理 URLSessionDataDelegate


    private var receivedData = Data()
    private var dataTask: URLSessionDataTask?
    private var completionHandler: (() -> Void)?
    
    func getInfo() {
        let urlString = ""
        let url = URL(string: urlString) 
        var request = URLRequest(url: url!)
        request.setValue("application/json", forHTTPHeaderField: "Content-Type")
        request.setValue("text/event-stream", forHTTPHeaderField: "Accept")    
        request.httpMethod = "POST"
        // request.httpBody = "aaa=bbb".data(using: .utf8)
        
        let configuration = URLSessionConfiguration.default
        configuration.timeoutIntervalForRequest = 150
        configuration.timeoutIntervalForResource = 150
        
        let session = URLSession(configuration: configuration, delegate: self, delegateQueue: nil)
        self.dataTask = session.dataTask(with: request)
        self.dataTask?.resume()
    }
    
    func urlSession(_ session: URLSession, dataTask: URLSessionDataTask, didReceive data: Data) {
        receivedData.append(data)
        processReceivedData()
    }
    
    func urlSession(_ session: URLSession, task: URLSessionTask, didCompleteWithError error: Error?) {
        if let error = error {
            print("請求出錯 Error: \(error)")
        } else {
            print("請求完成")
        }
        completionHandler?()
    }
    
    private func processReceivedData() {
        if let string = String(data: receivedData, encoding: .utf8) {
            let lines = string.components(separatedBy: .newlines)
            for line in lines where !line.isEmpty {
                print("接收到的數據: \(line)")
            }
        }
        receivedData.removeAll()
    }