javabean邮箱验证

验证邮箱的正则表达式：\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*

javabean类的代码：

 1 package com.lyq.bean;
 2 
 3 import java.io.Serializable;
 4 
 5 public class Email implements Serializable{
 6     private static final long serialVersionUID = 1L;
 7     private String mailAdd;//email地址
 8     private boolean email;//是否是一个标准的email地址
 9     public Email()
10     {
11         
12     }
13     public Email(String mailAdd)
14     {
15         this.mailAdd = mailAdd;
16     }
17     public boolean isEmail()
18     {
19         String regex = "\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*";
20         
21         /*matches()尝试将整个区域与模式匹配,如果匹配成功，则可以通过 start、end 和 group 方法获取更多信息。
22         *返回：当且仅当整个区域序列匹配此匹配器的模式时才返回 true。
23         */
24 
25         if(mailAdd.matches(regex))
26         {
27             email = true;
28         }
29         return email;
30     }
31     //返回email地址
32     public String getMailAdd()
33     {
34         return mailAdd;
35     }
36     public void setMailAdd(String mailAdd)
37     {
38         this.mailAdd = mailAdd;
39     }
40 }

index.jsp是初始页面

 1 <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
 2 <%
 3 String path = request.getContextPath();
 4 String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
 5 %>
 6 
 7 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
 8 <html>
 9   <head>
10     <base href="<%=basePath%>">
11     
12     <title>My JSP 'index.jsp' starting page</title>
13     <meta http-equiv="pragma" content="no-cache">
14     <meta http-equiv="cache-control" content="no-cache">
15     <meta http-equiv="expires" content="0">    
16     <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
17     <meta http-equiv="description" content="This is my page">
18     <!--
19     <link rel="stylesheet" type="text/css" href="styles.css">
20     -->
21   </head>
22   
23   <body>
24     <form action="result.jsp" method="post">
25         <table align="center" width="300" border="2" height="150">
26             <tr>
27                 <td colspan="2" align="center">邮箱认证系统</td>
28             </tr>
29             <tr>
30                 <td align="right">邮箱地址:</td>
31                 <td><input type="text" name="mailAdd"/></td>
32             </tr>
33             <tr>
34                 <td colspan="2" align="center"><input type="submit"/></td>
35             </tr>
36         </table>
37     </form>
38   </body>
39 </html>

result.jsp是结果页面

 1 <%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
 2 <%
 3 String path = request.getContextPath();
 4 String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
 5 %>
 6 <%@page import="com.lyq.bean.Email" %>
 7 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
 8 <html>
 9   <head>
10     <base href="<%=basePath%>">
11     
12     <title>My JSP 'result.jsp' starting page</title>
13     
14     <meta http-equiv="pragma" content="no-cache">
15     <meta http-equiv="cache-control" content="no-cache">
16     <meta http-equiv="expires" content="0">    
17     <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
18     <meta http-equiv="description" content="This is my page">
19     <!--
20     <link rel="stylesheet" type="text/css" href="styles.css">
21     -->
22 
23   </head>
24   
25   <body>
26     <div align="center">
27     <%
28     //获取邮箱地址
29     String mailAdd = request.getParameter("mailAdd");
30     Email email = new Email(mailAdd);
31     if(email.isEmail()){
32     out.print(mailAdd+"<br>是一个标准的邮箱地址!<br>");
33     }else
34     {
35         out.print(mailAdd+"<br>不是一个标准的邮箱地址!<br>");
36     }
37      %>
38      <a href="index.jsp">返回</a>
39     </div>
40   </body>
41 </html>

javabean邮箱验证

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