关于cli的处理 启动参数

CommandOptions options = new CommandOptions();
        Option option = new Option("a", "tianjia");
        option.setLongOpt("add");
        option.setRequired(true);
        option.setArgs(1);
        option.setArgName("tianjia");

        OptionGroup group = new OptionGroup();
        Option option1 = new Option("a1", "tianjia");
        option1.setLongOpt("add1");
        option1.setRequired(true);
        option1.setArgs(2);
        option1.setArgName("tianjia1");

        Option option2 = new Option("a2", "tianjia");
        option2.setLongOpt("add2");
        option2.setRequired(true);
        option2.setArgs(2);
        option2.setArgName("tianjia2");

        options.addOption(option);
        group.addOption(option1);
        group.addOption(option2);
        group.setRequired(true);
        options.addOptionGroup(group);

        CommandLineParser parser = new PosixParser();
        if (null == args) {
            args = new String[0];
        }
        try {
            CommandLine cli = parser.parse(options, args);
            System.out.println(cli.getArgList());
        } catch (ParseException e) {
            e.printStackTrace();
        }
        //在option中设定的元素是基于-XX *** 格式
        //在group中设定的元素只能出现组中其中一个，不能同时出现
        //如果在设定一个启动参数的时候，该参数内部没有采用