Use port 465 complete Java email registration verification

Yesterday, Ali goes on-line with the deployment of one of my projects, functional test after a successful deployment, discovery function does not take registered. Finally, find information found Ali cloud since the default port number 25 will be blocked, and my application is registered in the port number that is used to achieve 25 functions. According to Ali cloud suggest the need to change the port number can only be 465, so check the internet to get a little while, so in this record it.

---

First, the premise

My project uses maven to manage a variety of packages, so you need to add dependent components get mail registration.

    <dependency>
      <groupId>com.sun.mail</groupId>
      <artifactId>javax.mail</artifactId>
      <version>1.6.0</version>
    </dependency>

Two, MailService class

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.mail.SimpleMailMessage;
import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.stereotype.Service;

import javax.mail.*;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import java.security.Security;
import java.util.Date;
import java.util.Properties;

/**
 * @Author: Evan
 * @Description:
 * @Date: Created in 19:07 2019/5/9
 * @Modified By:
 */

@Service
public class MailService {
    @Autowired
    private JavaMailSender sender;


    //username
    //在此处填写需要进行发送邮件的服务器
    //我的是163.com
    //需要开启pop3功能并使用客户端授权密码
    private final static String from="your email";
    //password
    //在此处填写
    private final static String psw="your password";

   //hostname
    private final static String host="smtp.163.com";
    /**
     * 使用加密的方式,利用465端口进行传输邮件,开启ssl
     * @param to    为收件人邮箱
     * @param message    发送的消息
     */
    public static boolean sendEmail(String to,String subject, String message) {
        try {
            Security.addProvider(new com.sun.net.ssl.internal.ssl.Provider());
            final String SSL_FACTORY = "javax.net.ssl.SSLSocketFactory";
            //设置邮件会话参数
            Properties props = new Properties();
            //邮箱的发送服务器地址
            props.setProperty("mail.smtp.host", host);
            props.setProperty("mail.smtp.socketFactory.class", SSL_FACTORY);
            props.setProperty("mail.smtp.socketFactory.fallback", "false");
            //邮箱发送服务器端口,这里设置为465端口
            props.setProperty("mail.smtp.port", "465");
            props.setProperty("mail.smtp.socketFactory.port", "465");
            props.put("mail.smtp.auth", "true");
            final String username = from;
            final String password = psw;
            //获取到邮箱会话,利用匿名内部类的方式,将发送者邮箱用户名和密码授权给jvm
            Session session = Session.getDefaultInstance(props, new Authenticator() {
                protected PasswordAuthentication getPasswordAuthentication() {
                    return new PasswordAuthentication(username, password);
                }
            });
            //通过会话,得到一个邮件,用于发送
            Message msg = new MimeMessage(session);
            //设置发件人
            msg.setFrom(new InternetAddress(from));
            //设置收件人,to为收件人,cc为抄送,bcc为密送
            msg.setRecipients(Message.RecipientType.TO, InternetAddress.parse(to, false));
            msg.setRecipients(Message.RecipientType.CC, InternetAddress.parse(to, false));
            msg.setRecipients(Message.RecipientType.BCC, InternetAddress.parse(to, false));
            msg.setSubject(subject);
            //设置邮件消息
            msg.setContent(message,"text/html;charset=utf-8");
            //msg.setText(message);
           // msg.setContent(text,"text/html;charset=UTF-8");
            //设置发送的日期
            msg.setSentDate(new Date());

            //调用Transport的send方法去发送邮件
            Transport.send(msg);
           return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }

    }

}

Third, call

//subject
		String subject="验证码验证";
				//validation code
		String code=(int)(Math.random()*10000)+"";
		String content="非常高兴您能加入我们，您本次的验证码为："+code+"\n\n"+"再次感谢您的加入";
		boolean isSuccessful=MailService.sendEmail(email,subject,content);
		if(isSuccessful) {
			request.getSession().setAttribute("code", code);
			return ReturnMsg.msg(HttpServletResponse.SC_OK, "发送成功");
		}else {
			return ReturnMsg.msg(HttpServletResponse.SC_BAD_REQUEST, "发送失败");
		}