使用Java.net的Http功能验证和发送请求

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;

public class HttpExample {
    public static void main(String[] args) {
        try {
            // 创建URL对象
            URL url = new URL("http://example.com");

            // 打开连接
            HttpURLConnection connection = (HttpURLConnection) url.openConnection();

            // 设置请求方法
            connection.setRequestMethod("GET");

            // 设置身份验证信息
            String username = "your_username";
            String password = "your_password";
            String auth = username + ":" + password;
            String encodedAuth = Base64.getEncoder().encodeToString(auth.getBytes());
            connection.setRequestProperty("Authorization", "Basic " + encodedAuth);

            // 发送请求
            connection.connect();

            // 获取响应
            BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
            String line;
            StringBuilder response = new StringBuilder();
            while ((line = reader.readLine()) != null) {
                response.append(line);
            }
            reader.close();

            // 输出响应
            System.out.println(response.toString());

            // 断开连接
            connection.disconnect();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}