String classpath=test.class.getResource("/").getFile();

String f = classpath.toString()+"setting.properties";

log.info(f);

        Properties props = new Properties();

        //props.load(test.class.getResourceAsStream(f));

        props.load(new FileReader(f, StandardCharsets.UTF_8));

        String filepath = props.getProperty("last_open_file");

        String interval = props.getProperty("auto_save_interval", "120");

        log.info(filepath);

        log.info(interval);

        props.setProperty("url", "http://www.liaoxuefeng.com");

        props.setProperty("language", "Java");

        props.store(new FileOutputStream("D:\\\\conf\\\\setting.properties"), "这是写入的properties注释"); 

        // 存到setting.properties文件里的注释显示的是ASCII编码#\u6CE8\u91CA

        // 整个工程是utf-8编码。?