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）
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<%@ 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 style= "text-align: center" width= "300px" height= "200px" > <form action= "retrievepassword.do" method= "post" >
<input type= "email" name= "email" id= "email" width= "100px" height= "60px" style= "margin-top: 100px" 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" onclick= "backlogin()" 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）
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/** * @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
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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测试数据 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测试数据 public static string sendemailsmtphost = "smtp.163测试数据" ; // 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。
原文链接：https://blog.csdn.net/qq_40348465/article/details/83629000
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