java Process阻塞，需要关闭流

/**
 * 把音频文件转换成mp3
 */
public static void ConvertM4aToMp3(String m4aFilePath, String outputFilePath) throws Exception {
    Path path = Paths.get(m4aFilePath);
    if(!Files.exists(path)){
        throw new ServiceException(500, "转换MP3，临时文件不存在");
    }
    // 使用双引号包裹路径
    //m4aFilePath = "\"" + m4aFilePath + "\"";
    //outputFilePath = "\"" + outputFilePath + "\"";

    // 明确分割命令参数
    String[] cmd = {
            "ffmpeg",          // 或使用绝对路径
            "-i", m4aFilePath,
            "-c:a", "libmp3lame",
            "-q:a", "0",
            "-map_metadata", "0",
            outputFilePath
    };
    log.info("输入文件路径：{}，输出文件路径：{}，执行命令：{}", m4aFilePath, outputFilePath, JSONUtil.toJsonStr(cmd));

    try {
        Process process = new ProcessBuilder(cmd).start();
        process.getOutputStream().close();

        // 读取输出和错误流（必须消费输出流，否则可能阻塞）
        BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
        BufferedReader errorReader = new BufferedReader(new InputStreamReader(process.getErrorStream()));

        String line;
        while ((line = reader.readLine()) != null) {
            log.info("正确输出：" + line);
        }
        while ((line = errorReader.readLine()) != null) {
            log.error("错误输出" + line); // FFmpeg 的错误输出通常在此处
        }

        int exitCode = process.waitFor();
        log.info("FFmpeg 进程退出码: " + exitCode);
    } catch (Exception e) {
        log.info("转换mp3格式错误，源文件：{}，错误信息:{}", m4aFilePath, ExceptionUtil.stacktraceToString(e));
    }

}