JavaWeb利用邮箱帮用户找回密码

<%@ page language="java" contentType="text/html; charset=UTF-8"
 pageEncoding="UTF-8"%>









 

 

 
 
   

  

 
  找回密码
 
 
 

 

 
 返回登录页面
 
 

/**
 * @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("");
 } 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("");
  }
 }
 out.println(""); 
 }

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;
 }
 
}