三叶草 发表于 2021-10-5 16:05:23

JavaWeb利用邮箱帮用户找回密码

这篇文章主要为大家详细介绍了JavaWeb利用邮箱帮用户找回密码,具有一定的参考价值,感兴趣的小伙伴们可以参考一下
本文是介绍在一个小的javaweb项目中,利用邮箱帮用户找回密码。
效果展示   

需要一个发送邮件的jar包 : javax.mail .jar
1.jsp页面(设置邮箱输入框)


<%@ page language="java" contenttype="text/html; charset=utf-8"
pageencoding="utf-8"%>
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>找回密码-图书管理系统</title>
<link rel="stylesheet" href="bootstrap/css/bootstrap.min.css" rel="external nofollow" >
<script type="text/javascript" src="bootstrap/js/bootstrap.min.js"></script>
</head>
<body>
<div width="300px" height="200px">
<form action="retrievepassword.do" method="post">


<input type="email" name="email" id="email" width="100px"
height="60px" placeholder="请输入您的邮箱地址"
required> <br>
<br>

<button type="submit" class="btn btn-success" id="button"
width="100px" height="60px">找回密码</button>

</form>
<br>
<br>

<button type="button" class="btn btn-primary" id="button"
   width="100px" height="60px">返回登录页面</button>
</div>
<script type="text/javascript">
function backlogin() {
window.location.href = "login.jsp"
}
</script>
</body>
</html>
2.servlet代码(根据用户输入的邮箱账号找到用户,并生成发送邮件类的实例,再设置收件人和要发送的内容,最后发送邮件)


/**
* @see httpservlet#dopost(httpservletrequest request, httpservletresponse response)
*/
protected void dopost(httpservletrequest request, httpservletresponse response) throws servletexception, ioexception {
//获取用户的邮箱
string email = request.getparameter("email");
admin admin = null;
user user = null;
printwriter out = response.getwriter();
//实例化一个发送邮件的对象
sendmail mysendmail = new sendmail();
//根据邮箱找到该用户信息
admin = adminservice.getadminbyemail(email);
if(admin!=null) {
//设置收件人和消息内容
mysendmail.sendmail(email, "图书管理系统提醒,您的密码为:"+admin.getpassword());
out.println("<script>alert('恭喜,找回密码成功');window.location.href='login.jsp'</script>");
} else {
user = userservice.getuserbyemail(email);
if(user!=null) {
mysendmail.sendmail(email, "图书管理系统提醒,您的密码为:"+user.getpassword());
out.println("<script>alert('恭喜,找回密码成功');window.location.href='login.jsp'</script>");
}
}
out.println("<script>alert('该邮箱尚未注册!请重新输入');window.location.href='retrievepassword.jsp'</script>");
}
3.发送邮件类


package com.bookms.util;

import javax.mail.messagingexception;
import javax.mail.nosuchproviderexception;
import javax.mail.session;
import javax.mail.transport;
import javax.mail.internet.internetaddress;
import javax.mail.internet.mimemessage;
import java.util.date;
import java.util.properties;

public class sendmail {

// 发件人的邮箱账号如:xxx@163.com
public static string sendemailaccount = "";
// 发件人的邮箱的授权码(自己在邮箱服务器中开启并设置)
public static string sendemailpassword = "";
// 发件人邮箱的smtp服务器地址,如:smtp.163.com
public static string sendemailsmtphost = "smtp.163.com";
// 收件人的邮箱账号
public static string receivemailaccount = "";

// 把发送邮件封装为函数,参数为收件人的邮箱账号和要发送的内容
public void sendmail(string receivemailaccount, string mailcontent) {
// 创建用于连接邮件服务器的参数配置
properties props = new properties();
// 设置使用smtp协议
props.setproperty("mail.transport.protocol", "smtp");
// 设置发件人的smtp服务器地址
props.setproperty("mail.smtp.host", sendemailsmtphost);
// 设置需要验证
props.setproperty("mail.smtp.auth", "true");

// 根据配置创建会话对象, 用于和邮件服务器交互
session session = session.getinstance(props);
// 设置debug模式,便于查看发送过程所产生的日志
session.setdebug(true);

try {
// 创建一封邮件
mimemessage message = createmimemessage(session, sendemailaccount, receivemailaccount, mailcontent);

// 根据 session 获取邮件传输对象
transport transport = session.gettransport();

transport.connect(sendemailaccount, sendemailpassword);

// 发送邮件, 发到所有的收件地址, 通过message.getallrecipients() 可以获取到在创建邮件对象时添加的所有收件人
transport.sendmessage(message, message.getallrecipients());

// 关闭连接
transport.close();
} catch (nosuchproviderexception e) {
// todo auto-generated catch block
e.printstacktrace();
} catch (messagingexception e) {
// todo auto-generated catch block
e.printstacktrace();
} catch (exception e) {
// todo auto-generated catch block
e.printstacktrace();
}
}

/**
*
* @param session
*      和服务器交互的会话
* @param sendmail
*      发件人邮箱
* @param receivemail
*      收件人邮箱
* @return
* @throws exception
*/
public static mimemessage createmimemessage(session session, string sendmail, string receivemail,
string mailcontent) throws exception {
// 创建一封邮件
mimemessage message = new mimemessage(session);

// 设置发件人姓名和编码格式
message.setfrom(new internetaddress(sendmail, "图书管理系统", "utf-8"));

// 收件人
message.setrecipient(mimemessage.recipienttype.to, new internetaddress(receivemail, "尊敬的用户", "utf-8"));

// 设置邮件主题
message.setsubject("找回密码提醒", "utf-8");

// 设置邮件正文
message.setcontent(mailcontent, "text/html;charset=utf-8");

// 设置发件时间
message.setsentdate(new date());

// 保存设置
message.savechanges();

return message;
}

}
注意此处用的授权码,需要自己登录邮箱去设置,如163邮箱设置如下:


以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持CodeAE代码之家。
原文链接:https://blog.csdn.net/qq_40348465/article/details/83629000

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