java调用shell脚本，解决权限问题

 /**
     * 解决了 参数中包含 空格和脚本没有执行权限的问题
     * @param scriptPath 脚本路径
     * @param para 参数数组
     */
    private void execShell(String scriptPath) {
        try {
            //解决脚本没有执行权限
            ProcessBuilder builder = new ProcessBuilder("/bin/chmod", "755",scriptPath);
            Process process = builder.start();
            process.waitFor();

            Process ps = Runtime.getRuntime().exec(scriptPath);
            ps.waitFor();

            BufferedReader br = new BufferedReader(new InputStreamReader(ps.getInputStream()));
            StringBuffer sb = new StringBuffer();
            String line;
            while ((line = br.readLine()) != null) {
                sb.append(line).append("\n");
            }
            //执行结果
            String result = sb.toString();

        } catch (Exception e) {
            e.printStackTrace();
        }
    }