匹配2到4个中文字符（用于匹配姓名）：[\u4e00-\u9fa5]{2,4}

匹配电子邮箱：^\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$(用于jsp) \\w+([-+.]\\w+)*@\\w+([-.]\\w+)*\\.\\w+([-.]\\w+)*（用于java）

匹配手机号码：[0-9]{11}

以上为比较常用的正则表达式，下面实例介绍它怎么用：

String input = "张三丰，zhangs@qq.com，我要预订产品哦！";


//邮箱检测
String regex_email = "\\w+([-+.]\\w+)*@\\w+([-.]\\w+)*\\.\\w+([-.]\\w+)*"; Pattern pattern_email = Pattern.compile(regex_email); Matcher matcher_email = pattern_email.matcher(input); while (matcher_email.find()) { email=matcher_email.group(); System.out.println("邮箱："+matcher_email.group()); } //手机号检测 String regex_phone = "[0-9]{11}"; Pattern pattern_phone = Pattern.compile(regex_phone); Matcher matcher_phone = pattern_phone.matcher(input); while (matcher_phone.find()) { phone=matcher_phone.group(); System.out.println("手机号："+matcher_phone.group()); }