JavaWeb QQ邮箱找回密码

我的上一篇博客，已经写了登录注册，接下来写QQ邮箱找回密码

首先：我们需要在 QQ邮箱设置中获取授权码，步骤如下

进入QQ邮箱---->设置---->账户---->开启服务：POP3/SMTP服务---->保存授权码

**其次：**我百度云盘里保存了可以提取，也可以百度下载
链接：https://pan.baidu.com/s/1IT_1sDNvALVh-H_78nMXaA
提取码：btnb
导入项目中 或者

**最后：**代码展示

1.SendEmial.jsp（前端页面）

<form name="f1" id="f1" action="sedEmail" method="post">		
			<table border="0">
				<tr>
					<td colspan="1"><center>
							<h3>邮箱找回密码</h3>
						</center>
					</td>
				</tr>
				<tr>
					<td><input type="text" name="email" id="email" placeholder="请输入您的邮箱号">
					</td>
					<td colspan="1"><center>
							<td><font color="red" size="2"> ${MSG}</font></td>
						</center>
					</td>
				</tr>
				<tr>
					<td><input type="submit" value="确认">
					</td>
					<td colspan="1"><center>
							<td><font color="red" size="2"> ${MSG3}</font></td>
						</center>
					</td>
				</tr>		
			</table>
		</form>
		<a href="login.jsp" style="margin-left: 70px;"><font size="2"><i>返回登录</i>
		</font> </a>

2.CheckSendEmail.java（servlet进行数据处理，发送邮件）

package com.aiit.service;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.Properties;

import javax.mail.Authenticator;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;


import com.aiit.dao.SendEmail;
import com.aiit.model.Login;
@WebServlet("/sedEmail")
public class CheckSendEmail extends HttpServlet {

	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		//接收页面传过来的QQ邮箱号
       String email  = request.getParameter("email");
       //传到数据库，判断是否存在，如果存在，返回用户账号信息
       SendEmail send = new SendEmail();
          Login login = send.getEmail(email);
          //System.out.println(login.getEmail());
          //to接收的是用户注册时的邮箱号，也就是就是收件人的，将接收到后台发送的密码
          String to = login.getEmail();
  	    
	      // 发件人电子邮箱，你可以改成自己的邮箱号
	      String from = "********@qq.com";
	 
	      // 指定发送邮件的主机为 smtp.qq.com
	      String host = "smtp.qq.com";  //QQ 邮件服务器
	 
	      // 获取系统属性
	      Properties properties = System.getProperties(); 
	      // 设置邮件服务器
	      properties.setProperty("mail.smtp.host", host); 
	      properties.put("mail.smtp.auth", "true");
	      // 获取默认session对象
	      Session session = Session.getDefaultInstance(properties,new Authenticator(){
	        public PasswordAuthentication getPasswordAuthentication()
	        {
	         return new PasswordAuthentication("********@qq.com", "kwifhodgdpbldigd"); 
	          //发件人邮件用户名、授权码（授权码要与QQ邮箱相对应，可以从邮箱设置里面获得，详细步骤在博客开头）
	        }
	       });	 
	      try{
	         // 创建默认的 MimeMessage 对象
	         MimeMessage message = new MimeMessage(session);	 
	         // Set From: 头部头字段
	         message.setFrom(new InternetAddress(from));	 
	         // Set To: 头部头字段
	         message.addRecipient(Message.RecipientType.TO,
	                                  new InternetAddress(to));
	 
	         // Set Subject: 头部头字段
	         message.setSubject("This is the Subject Line!");
	 
	         // 设置消息体
	         message.setText("您的员工管理系统，密码是："+login.getLoginPwd());
	 
	         // 发送消息
	         Transport.send(message);
	         //System.out.println("Sent message successfully....from runoob.com");
	         //传到页面
	     	request.setAttribute("MSG3", "发送成功，请注意查收！");
	         request.getRequestDispatcher("SendEmial.jsp").forward(request, response);
	      }catch (MessagingException mex) {
	         mex.printStackTrace();
	      }	
	}
}

3.SendEmail.java（数据库）

package com.aiit.dao;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

import com.aiit.common.JDBCUtils;
import com.aiit.model.Login;


public class SendEmail {

	public Login getEmail(String email){
		//先查找前端页面传过来的邮箱是否存在，若存在则把账号、密码、邮箱返回给servlet
		Login login = null;
		Connection conn = (Connection) JDBCUtils.getConnection();
		String sql="SELECT loginName,loginPwd,loginEmail  FROM tbl_login WHERE loginEmail=?";
		try {
			PreparedStatement pre = (PreparedStatement) conn.prepareStatement(sql);
			pre.setString(1, email);
			ResultSet rs = pre.executeQuery();
			if(rs.next()){
				String loginName=rs.getString(1);
				String loginPwd=rs.getString(2);
				String loginEmail = rs.getString(3);			
				login = new Login(loginName,loginPwd,loginEmail);	
				 return login;

			}
			else{
				 return login;
			}
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}		
		return login;
		}	
}