生成若干位的随机数 有数字+大小写字母组成
方法代码如下:
/*** 随机数* @param place 定义随机数的位数*/public static String randomGen(int place) {String base = "wqetryuioplkjhgfdsazxcvbmnABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";StringBuffer sb = new StringBuffer();Random rd = new Random();for(int i=0;i<place;i++) {sb.append(base.charAt(rd.nextInt(base.length())));}return sb.toString();}