• WebMail:网页注册成功发送邮件

    1.特别注意

    isELIgnored="false"

    如果没有这个El表达式无法识别

    2.pre work

    pox.xml

    
  
    junit
    junit
    3.8.1
    test
  

  
    javax.servlet
    javax.servlet-api
    4.0.1
  

    
    
      javax.mail
      mail
      1.4.7
    
    
    
      javax.activation
      activation
      1.1.1
    



  
    org.projectlombok
    lombok
    1.18.24
    provided

    3.jsp

    1. <%@ page contentType="text/html;charset=UTF-8" language="java" isELIgnored="false" %>
    2.  
    3. <html>
    4. <body>
    5. <h2>注册</h2>
    6. <form action="${pageContext.request.contextPath}/RegisterServlet.do" method="post">
    7.     username:<input type="text" name="username"><br>
    8.     password:<input type="password" name="psw"><br>
    9.     email:<input type="email" name="email"><br>
    10.     <input type="submit" value="register">
    11. </form>
    12. </body>
    13. </html>

    info.jsp

    ${msg}

     

    4.servlet
     

    1. package com.qing.servlet;
    2.  
    3. import com.qing.pojo.user;
    4. import com.qing.utils.SendMail;
    5.  
    6. import javax.servlet.ServletException;
    7. import javax.servlet.http.HttpServlet;
    8. import javax.servlet.http.HttpServletRequest;
    9. import javax.servlet.http.HttpServletResponse;
    10. import java.io.IOException;
    11.  
    12. public class RegisterServlet extends HttpServlet {
    13.     @Override
    14.     protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
    15.         //接收用户，封装对象
    16.         String name=req.getParameter("username");
    17.         String psw=req.getParameter("psw");
    18.         String email=req.getParameter("email");
    19.         System.out.println(name+" "+psw+" "+email);
    20.         //用线程发送邮件，避免耗时过多，提高体验
    21.         user user=new user(name,psw,email);
    22.         SendMail send=new SendMail(user);
    23.         send.start();
    24.  
    25.         req.setAttribute("msg","注册成功，邮件已发送，请注意查收！");
    26.         req.getRequestDispatcher("info.jsp").forward(req,resp);
    27.     }
    28.  
    29.     @Override
    30.     protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
    31.     }
    32. }
     

    5.utils
     

    1. package com.qing.utils;
    2. import com.qing.pojo.user;
    3. import com.sun.mail.util.MailSSLSocketFactory;
    4.  
    5. import javax.mail.*;
    6. import javax.mail.internet.InternetAddress;
    7. import javax.mail.internet.MimeMessage;
    8. import java.util.Properties;
    9.  
    10. //多线程提高用户体验,异步处理
    11. public class SendMail extends Thread{
    12.     //用于给用户发送邮件的邮箱
    13.     private String from="@qq.com";
    14.     //邮箱用户名
    15.     private String name="@qq.com";
    16.     //授权码
    17.     private String password="授权码";
    18.     //发送邮件的服务器地址
    19.     private String host="smtp.qq.com";
    20.  
    21.     private user user;
    22.     public SendMail(user user){
    23.         this.user=user;
    24.     }
    25.     //重写run
    26.     @Override
    27.     public void run(){
    28.         try{
    29.             Properties prop=new Properties();
    30.             prop.setProperty("mail.host",host);//设置qq邮件服务器
    31.             prop.setProperty("mail.transport.protocol","smtp");//邮件发送协议
    32.             prop.setProperty("mail.smtp.auth","true");//验证用户账号密码
    33.  
    34.             //qq 加密ssl
    35.             MailSSLSocketFactory sf=new MailSSLSocketFactory();
    36.             sf.setTrustAllHosts(true);
    37.             prop.put("mail.smtp.ssl.enable","true");
    38.             prop.put("mail.smtp.ssl.socketFactory",sf);
    39.  
    40.             Session session=Session.getDefaultInstance(prop, new Authenticator() {
    41.  
    42.                 protected PasswordAuthentication getPasswordAuthentication() {
    43.                     return new PasswordAuthentication("@qq.com","授权码");
    44.                 }
    45.             });
    46.             session.setDebug(true);
    47.             Transport ts=session.getTransport();
    48.             ts.connect(host,name,password);
    49.  
    50.             MimeMessage message=new MimeMessage(session);
    51.             //指明发件人
    52.             message.setFrom(new InternetAddress(from));
    53.             //收件人
    54.             message.setRecipient(Message.RecipientType.TO,new InternetAddress(user.getEmail()));
    55.             //邮件标题
    56.             message.setSubject("用户注册邮件");
    57.  
    58.             String info="注册成功!用户名："+user+" 密码："+user.getPsw();
    59.  
    60.             message.setContent(info,"text/html;charset=UTF-8");
    61.             message.saveChanges();
    62.             //5.发送邮件
    63.             ts.sendMessage(message,message.getAllRecipients());
    64.             //6.关闭连接
    65.             ts.close();
    66.  
    67.  
    68.         } catch (Exception e) {
    69.            throw new RuntimeException(e);
    70.         } }}
     

    
                
    
                    
    
                
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                    原文地址：https://blog.csdn.net/2201_75903640/article/details/133824921
                
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