邮箱验证系统-优快云博客

本文链接：https://blog.youkuaiyun.com/csp_6666/article/details/86830753

本文介绍了一个简单的邮箱验证系统，使用Java实现。系统通过正则表达式检查输入的邮箱地址是否符合标准格式，并在JSP页面上展示验证结果。

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Email 代码:

package itcast;
import java.io.Serializable;

public class Email implements Serializable {
	private static final long serialVersionUID = 1L;
	private String mailAdd;
	private boolean email;

	public Email() {

	}

	public Email(String mailAdd) {
		this.mailAdd = mailAdd;
	}

	public boolean isEmail() {
		String regex = "\\w+\\x40\\w+\\x2e\\w+";
		if (mailAdd.matches(regex)) {
			email = true;
		}
		return email;
	}
	public String getMailAdd(){
		return mailAdd;
	}
	public void setMailAdd(String mailAdd){
		this.mailAdd = mailAdd;
	}
}

index代码


<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"
	errorPage="error.jsp"%>
<%
	String path = request.getContextPath();
	String basePath = request.getScheme() + "://"
			+ request.getServerName() + ":" + request.getServerPort()
			+ path + "/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">

<title>My JSP 'error.jsp' starting page</title>

<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
	<link rel="stylesheet" type="text/css" href="styles.css">
	-->

</head>

<body>
	<form action="result.jsp">
		邮箱系统: <input type="text" name="mailAdd"> <br> <input
			type="submit">
	</form>
</body>
</html>

result代码:

<%@ page language="java" import="java.util.* "  pageEncoding="UTF-8"%>
<%@page import="itcast.Email"%>
<%
	String path = request.getContextPath();
	String basePath = request.getScheme() + "://"
			+ request.getServerName() + ":" + request.getServerPort()
			+ path + "/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">

<title>My JSP 'result.jsp' starting page</title>

<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
	<link rel="stylesheet" type="text/css" href="styles.css">
	-->

</head>

<body>
	<%
		String mailAdd = request.getParameter("mailAdd");
		itcast.Email email = new itcast.Email(mailAdd);
		if(email.isEmail()){
			out.print(mailAdd + "<br>是一个标准的邮箱地址!<br>");
		}else{
			out.print(mailAdd + "<br>不是一个标准的邮箱地址!<br>");
		}
	%>
	<a href="index.jsp">返回</a>

</body>
</html>

JSP验证邮箱格式.