springboot结合smtp邮件发送开发实践

pom.xml中引入依赖

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

核心代码

default void sendMessage( MimeMessage message , String from, String alis, String to[], String cc[], String content, String subject, String filePath) throws Exception {
        JavaMailSenderImpl mailSender = new JavaMailSenderImpl();
        mailSender.setHost(your email host);
        mailSender.setPort(email port);
        mailSender.setUsername(username);
        mailSender.setPassword(password);
        mailSender.setProtocol(protocol); //smtp
        MimeMessage message = javaMailSender.createMimeMessage();
        InternetAddress fromAddress = new InternetAddress(from, alis);
        message.setFrom(fromAddress);
        InternetAddress receivers[] = new InternetAddress[to.length];
        for(int i = 0 ; i < to.length ; i++) {
            receivers[i] = new InternetAddress(to[i]);
        }
        message.setRecipients(MimeMessage.RecipientType.TO, receivers);
        //添加抄送人
        if(cc != null && cc.length > 0) {
            InternetAddress ccUsers[] = new InternetAddress[cc.length];
            for(int i = 0 ; i < cc.length ; i++) {
                ccUsers[i] = new InternetAddress(cc[i]);
            }
            message.setRecipients(Message.RecipientType.CC, ccUsers);
        }
        message.setSubject(subject);
        Multipart multipart = new MimeMultipart();
        BodyPart htmlBody = new MimeBodyPart();
        htmlBody.setContent(content + "\n", "text/html; charset=utf-8");
        multipart.addBodyPart(htmlBody);
        //设置附件
        if(!StringUtils.isEmpty(filePath)) {
            BodyPart attachmentBody = new MimeBodyPart();
            String fileName = filePath.substring(filePath.lastIndexOf(File.separator) + 1);
            attachmentBody.setDataHandler(new DataHandler(new FileDataSource(filePath)));
            attachmentBody.setFileName(MimeUtility.encodeText(fileName));
            multipart.addBodyPart(attachmentBody);
        }
        message.setContent(multipart);
        javaMailSender.send(message);
    }