先介绍java验证正则表达式的方法，一共有两种，代码如下：
package com.ustc.nhss.test;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* @说明：java验证正则表达的式的两种方法
* */
public class Regular {
public static void main(String args[]) {
//第一种
Pattern p = Pattern.compile("^13\\d\\d\\d\\d\\d\\d\\d\\d\\d@e|(^15\\d\\d\\d\\d\\d\\d\\d\\d\\d@e)|(^18\\d\\d\\d\\d\\d\\d\\d\\d\\d@e)");
String s = "18668327308@e";
Matcher m = p.matcher(s);
if (m.find()) {
String x = s.substring(0, 11);
System.out.println("{" + x + "}");
} else {
System.out.println("xxx");
}
String t = "^13\\d\\d\\d\\d\\d\\d\\d\\d\\d@e|(^15\\d\\d\\d\\d\\d\\d\\d\\d\\d@e)|(^18\\d\\d\\d\\d\\d\\d\\d\\d\\d@e)";
//第二种
if(s.matches(t)){
String x = s.substring(0, 11);
System.out.println("{" + x + "}");
};
}
}
以下为jquery验证ip的实例：
if(!valicateIp(deviceIp)){
alert("请输入合法的IP");
return false;
}
//检查IP的合法性
function valicateIp(ip){
var pattern = /((2[0-4]\d|25[0-5]|[01]?\d\d?)\.){3}(2[0-4]\d|25[0-5]|[01]?\d\d?)/;
return pattern.test(ip);
}