String[] citys = {"津","京","宁"}; String sectionNamePre = "断面"; while (true) { String sectionName = sectionNamePre + (new Random().nextInt(2000)); //断面:随机0-1999 String city = citys[(new Random().nextInt(3))]; //随机取津、京、宁 StringBuffer plateNumStr = new StringBuffer(city);//下面开始:拼接车牌号,并随机产生0到9的6位车牌号 plateNumStr.append(new Random().nextInt(10)) .append(new Random().nextInt(10)) .append(new Random().nextInt(10)) .append(new Random().nextInt(10)) .append(new Random().nextInt(10)) .append(new Random().nextInt(10));