4dkankan-center-user/src/main/java/com/fdkankan/ucenter/util/SendMailUtils.java

package com.fdkankan.ucenter.util;

import com.sun.mail.util.MailSSLSocketFactory;
import org.apache.commons.lang3.StringUtils;

import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.activation.FileDataSource;
import javax.mail.*;
import javax.mail.internet.*;
import java.io.File;
import java.util.Properties;

/**
 * Created by Hb_zzZ on 2020/3/16.
 */
public class SendMailUtils {


    /**
     * 发送带附件的邮件
     * @param  from      发件人
     * @param  pass      发件人密码
     * @param  host      发件人主机
     * @param receive    收件人
     * @param subject    邮件主题
     * @param msg        邮件内容
     * @param filename   附件地址
     *
     */
    public static boolean sendMail(String from,String pass,String host,
                                   String receive, String subject, String msg, String filename) {
        if (StringUtils.isEmpty(receive)) {
            return false;
        }
        try {
            // 获取系统属性
            Properties properties = System.getProperties();
            // 设置邮件服务器
            properties.setProperty("mail.smtp.host", host);
            properties.setProperty("mail.debug", "true");
            properties.put("mail.smtp.auth", "true");
            MailSSLSocketFactory sf = new MailSSLSocketFactory();
            sf.setTrustAllHosts(true);
            properties.put("mail.smtp.ssl.enable", "true");
            properties.put("mail.smtp.ssl.socketFactory", sf);
            // 获取默认session对象
            Session session = Session.getDefaultInstance(properties, new Authenticator() {
                public PasswordAuthentication getPasswordAuthentication() { // qq邮箱服务器账户、第三方登录授权码
                    return new PasswordAuthentication(from, pass); // 发件人邮件用户名、密码
                }
            });
            // 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(receive));
            // Set Subject: 主题文字
            message.setSubject(subject);
            MimeMultipart multipart = new MimeMultipart("mixed");

            MimeBodyPart htmlPart = new MimeBodyPart();
            htmlPart.setContent(msg, "text/html;charset=utf-8");
            multipart.addBodyPart(htmlPart);

            if (StringUtils.isNotBlank(filename)) {
                File file = new File(filename);
                if (file.exists()) {
                    MimeBodyPart attachmentPart = new MimeBodyPart();
                    DataSource source = new FileDataSource(file);
                    attachmentPart.setDataHandler(new DataHandler(source));
                    attachmentPart.setFileName(
                            MimeUtility.encodeText(file.getName(), "UTF-8", "B")
                    );
                    multipart.addBodyPart(attachmentPart);
                }
            }

            message.setContent(multipart);
            Transport.send(message);
            return true;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return false;
    }

}