如何在Java中运行带有-u参数和json数据的curl命令？

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;

public class CurlCommand {
    public static void main(String[] args) throws IOException {
        String url = "http://example.com/api"; // 请求的URL
        String jsonPayload = "{\"name\": \"John\", \"age\": 30}"; // JSON数据
        String username = "username"; // 认证用户名
        String password = "password"; // 认证密码

        // 构建curl命令
        String[] command = {"curl", "-u", username + ":" + password, "-d", jsonPayload, url};

        // 创建进程构建器
        ProcessBuilder processBuilder = new ProcessBuilder(command);
        processBuilder.redirectErrorStream(true);

        // 启动进程并等待执行完成
        Process process = processBuilder.start();

        // 读取进程输出
        InputStream inputStream = process.getInputStream();
        BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
        String line;
        while ((line = reader.readLine()) != null) {
            System.out.println(line);
        }

        // 等待进程执行完成
        try {
            int exitCode = process.waitFor();
            System.out.println("Command exited with code: " + exitCode);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }
}