Java邮件发送QQ邮箱带附件

左手的ㄟ右手 2023-06-28 12:29 58阅读 0赞

添加依赖

<dependency>
                <groupId>javax.mail</groupId>
                <artifactId>mail</artifactId>
                <version>1.4.7</version>
            </dependency>

关键代码

import java.io.File;
    import java.io.UnsupportedEncodingException;
    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.NoSuchProviderException;
    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;
    
    /**
     * 邮件发送工具类 <br/>
     * Author:杨杰超<br/>
     * Date:2020年1月9日 下午12:02:51 <br/>
     * Copyright (c) 2020, yangjiechao@dingtalk.com All Rights Reserved.<br/>
     *
     */
    public class SendMail {
    
        /**
         * 想QQ邮箱发送邮件
         * 
         * @param formMail
         *            发送人邮箱地址
         * @param descMail
         *            接收人邮箱地址
         * @param subject
         *            邮箱主题
         * @param content
         *            邮箱内容
         * @param files
         *            附件列表
         * @param contentType
         *            内容格式
         * @param password
         *            SMTP密码
         * @throws MessagingException
         * @throws UnsupportedEncodingException
         */
        public static void sendQQMail(String formMail, String descMail, String subject, String content, File[] files,
                String contentType, String password) throws MessagingException, UnsupportedEncodingException {
            Properties properties = new Properties();
            properties.setProperty("mail.smtp.host", "smtp.qq.com");
            properties.setProperty("mail.smtp.port", "465");
            properties.setProperty("mail.smtp.auth", "true");
            properties.setProperty("mail.debug", "true");
            properties.setProperty("mail.transport.protocol", "smtp");
            properties.setProperty("mail.smtp.ssl.enable", "true");
            Session session = Session.getInstance(properties, new Authenticator() {
                @Override
                protected PasswordAuthentication getPasswordAuthentication() {
                    return new PasswordAuthentication(formMail, password);
                }
            });
            Message message = new MimeMessage(session);
            try {
                message.setFrom(new InternetAddress(formMail));
                message.setRecipient(Message.RecipientType.TO, new InternetAddress(descMail));
                message.setSubject(subject);
    
                // 是否存在附件
                if (null != files && files.length > 0) {
                    MimeMultipart multipart = new MimeMultipart();
    
                    BodyPart contentPart = new MimeBodyPart();
                    contentPart.setContent(content, contentType);
                    multipart.addBodyPart(contentPart);
    
                    for (File file : files) {
                        MimeBodyPart attachment = new MimeBodyPart();
                        DataHandler dh2 = new DataHandler(new FileDataSource(file));
                        attachment.setDataHandler(dh2);
                        attachment.setFileName(MimeUtility.encodeText(dh2.getName()));
                        multipart.addBodyPart(attachment);
                    }
                    multipart.setSubType("mixed");
    
                    message.setContent(multipart);
                    message.saveChanges();
                }
                // 普通
                else {
                    message.setContent(content, contentType);
                }
    
                Transport transport = session.getTransport();
                transport.connect(formMail, password);
                Transport.send(message);
            } catch (UnsupportedEncodingException e) {
                throw e;
            } catch (NoSuchProviderException e) {
                throw e;
            } catch (MessagingException e) {
                throw e;
            }
    
        }
    
        public static void main(String[] args) throws MessagingException, UnsupportedEncodingException {
            // 由哪个邮箱发送
            String formMail = "********@qq.com";
            // QQ邮箱>设置>账户 开启POP3/SMTP服务 查看smtp密码
            String smtpPassword = "****************";
    
            // 发送人邮箱地址
            String descMail = "470947852@qq.com";
            String contentType = "text/html;charset=UTF-8";
    
            String subject = "测试邮件发送，含附件";
            String content = "test send mail, 这里是中文";
            File[] files = new File[2];
            files[0] = new File("C:/test_1.xls");
            files[1] = new File("C:/test_2.xls");
    
            SendMail.sendQQMail(formMail, descMail, subject, content, files, contentType, smtpPassword);
        }
    }