public static void main(String[] args) throws Exception {//修改mes db.properties属性文件的值Properties prop = new Properties(); // 属性集合对象 FileInputStream fis = new FileInputStream("src/config/db.properties"); // 属性文件输入流prop.load(fis); // 将属性文件流装载到Properties对象中fis.close(); // 关闭流prop.setProperty("jdbc.url", "jdbc:mysql://127.0.0.1:3306/mes_db?characterEncoding=UTF-8");FileOutputStream fos = new FileOutputStream("src/config/db.properties");prop.store(fos, "Copyright (c) Boxcode Studio");fos.close(); // 关闭流}