程序轨范

程序规范
1、对从页面获得的参数处理——三目运算符。

String id = request.getParameter("id") == null ?      "" : request.getParameter("id").trim();

/** * 判断是否是数字 *  * @param num * @return */public static boolean isNumeric(String num) {if (num == null || num.length() <= 0) {return false;}if (num.matches("\\d{1,}")) {return true;}return false;}//判断是否为手机号public static boolean isMobile(String mobile) {        boolean tag = true;// 手机号(正则)final String pattern1 = "^((13[0-9])|(15[^4,\\D])|(18[0,5-9]))\\d{8}$";final Pattern pattern = Pattern.compile(pattern1);final Matcher mat = pattern.matcher(mobile);if (!mat.find()) {tag = false;}return tag;}