使用QQ邮箱发送邮件SpringBoot

一、导入Maven依赖

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-mail</artifactId>
    <version>2.1.7.RELEASE</version>
</dependency>

二、配置文件

spring:
  mail:
    host: smtp.qq.com
    username: ------邮箱--
    password: -----邮箱密钥--
    default-encoding: UTF-8
    port: 465

三、实例代码

　　我这里是直接提取QQ邮箱号和邮箱密钥为常量，建议你们通过配置文件的哪里注入进入

　　直接调用 sendMail 方法传递参数即可

package cn.yangsansui.auth.tools;

import java.io.File;
import java.io.UnsupportedEncodingException;
import java.security.Security;
import java.util.Date;
import java.util.Map;
import java.util.Properties;

import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.mail.Authenticator;
import javax.mail.BodyPart;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Multipart;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;
import javax.mail.internet.MimeUtility;


public class EmailTools {
    private static final String FROM_MAIL_SMTP = "smtp.qq.com";
    private static final String FROM_MAIL_NAME = "QQ邮箱";
    private static final String FROM_MAIL_PASS = "QQ邮箱密钥";


    /**
     * 发送邮件(灵活度高，通用版)
     *
     * @param to       收件人, 多个Email以英文逗号分隔
     * @param cc       抄送, 多个Email以英文逗号分隔
     * @param subject  主题
     * @param content  内容
     * @return
     */
    public static boolean sendMail(String to, String cc, String subject, String content) {
        try {
            Security.addProvider(new com.sun.net.ssl.internal.ssl.Provider());
            final String SSL_FACTORY = "javax.net.ssl.SSLSocketFactory";
            final Properties p = System.getProperties();
            p.setProperty("mail.smtp.host", FROM_MAIL_SMTP);
            p.setProperty("mail.smtp.auth", "true");
            p.setProperty("mail.smtp.user", FROM_MAIL_NAME);
            p.setProperty("mail.smtp.pass", FROM_MAIL_PASS);

            p.setProperty("mail.smtp.socketFactory.class", SSL_FACTORY);
            p.setProperty("mail.smtp.socketFactory.fallback", "false");
            //邮箱发送服务器端口,这里设置为465端口
            p.setProperty("mail.smtp.port", "465");
            p.setProperty("mail.smtp.socketFactory.port", "465");

            // 根据邮件会话属性和密码验证器构造一个发送邮件的session
            Session session = Session.getInstance(p, new Authenticator() {
                protected PasswordAuthentication getPasswordAuthentication() {
                    return new PasswordAuthentication(p.getProperty("mail.smtp.user"), p.getProperty("mail.smtp.pass"));
                }
            });
            session.setDebug(true);
            Message message = new MimeMessage(session);
            //消息发送的主题
            message.setSubject(subject);
            //接受消息的人
            message.setReplyTo(InternetAddress.parse(FROM_MAIL_NAME));
            //消息的发送者
            message.setFrom(new InternetAddress(p.getProperty("mail.smtp.user"), "农夫"));
            // 创建邮件的接收者地址，并设置到邮件消息中
            String[] split = to.split(",");
            InternetAddress[] tos = new InternetAddress[split.length];
            for (int i = 0; i < split.length; i++) {
                tos[i] = new InternetAddress(split[i]);
            }
            // 设置抄送人
            if (cc != null && cc.length() > 0) {
                message.setRecipients(Message.RecipientType.CC, InternetAddress.parse(cc));
            }
            message.setRecipients(Message.RecipientType.TO, tos);
            // 消息发送的时间
            message.setSentDate(new Date());
            Multipart mainPart = new MimeMultipart();
            // 创建一个包含HTML内容的MimeBodyPart
            BodyPart html = new MimeBodyPart();
            // 设置HTML内容
            html.setContent(content, "text/html; charset=utf-8");
            mainPart.addBodyPart(html);
            // 将MiniMultipart对象设置为邮件内容
            message.setContent(mainPart);
            message.setContent(mainPart);
            message.saveChanges();
            Transport.send(message);
        } catch (MessagingException e) {
            e.printStackTrace();
            return false;
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
            return false;
        }
        return true;
    }
}