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SpringBoot Email:自己写一个邮件发送功能

诗意凌风 494

前言:

现在小伙伴们对“htmlemail模板”大概比较注重,你们都需要剖析一些“htmlemail模板”的相关文章。那么小编在网摘上搜集了一些对于“htmlemail模板””的相关文章,希望小伙伴们能喜欢,咱们快快来学习一下吧!

1.准备工作

使用spring boot发送邮件,需要做一个准备工作,必须打开发送邮件的服务。这里以qq为例,到邮箱设置--> 账户设置--> 找到pop3/smpt服务,点击开启,根据提示,发送短信到官方申请开启,最后会获得一个授权码,这是我们下面需要的。

2.配置文件:application.yml

spring   mail:      host: smtp.qq.com      password: ******  # 刚才申请的授权码      username: ****** # 你的qq邮箱      protocol: smtp      test-connection: true      default-encoding: utf-8      properties:        mail:          smtp:            auth: true  # 认证            ssl:              enable: true  #  SSL            starttls: # TLS需要时              enable: true              required: true
3.邮件工具类
@Componentpublic class MailUtil {    private static final Logger LOGGER = LoggerFactory.getLogger(MailUtil.class);    @Value("${spring.mail.username}")    public String fromUser;    @Autowired    private JavaMailSender javaMailSender;    /**     * 普通邮件发送     * @param email     * @throws Exception     */    public void sendEmail(Email email) throws Exception {        LOGGER.info("发送普通邮件给:{}",email.getToEmail());        SimpleMailMessage message = new SimpleMailMessage();        message.setFrom(fromUser);        message.setTo(email.getToEmail());        message.setSubject(email.getSubject());        message.setText(email.getContent());        javaMailSender.send(message);    }    /**     * 带图片发送     * @param email     */    public void sendPicture(Email email) throws Exception {        LOGGER.info("发送带图片邮件给:{}",email.getToEmail());        MimeMessage message = javaMailSender.createMimeMessage();        MimeMessageHelper helper = new MimeMessageHelper(message, true);        //这里可以自定义发信名称比如:setFrom(fromUser,'gq')        helper.setFrom(fromUser);        helper.setTo(email.getToEmail());        helper.setSubject(email.getSubject());        helper.setText("<html><body><img src=\"cid:pic\" ></body></html>",true);        FileSystemResource file = new FileSystemResource(new File(email.getFilePath()));        //pic 名称需与 cid 那里的名称对应        helper.addInline("pic", file);        javaMailSender.send(message);    }    /**     * 发送html,如 链接     * @param email     */    public void sendHtml(Email email) throws Exception {        LOGGER.info("发送带图片邮件给:{}",email.getToEmail());        MimeMessage message = javaMailSender.createMimeMessage();        MimeMessageHelper helper = new MimeMessageHelper(message, true);        helper.setFrom(fromUser);        helper.setTo(email.getToEmail());        helper.setSubject(email.getSubject());        helper.setText(email.getContent(),true);        javaMailSender.send(message);    }    /**     * 发送附件     * @param email     * @throws Exception     */    public void sendWithAttachments(Email email) throws Exception {        LOGGER.info("发送带附件邮件给:{}",email.getToEmail());        MimeMessage message = javaMailSender.createMimeMessage();        MimeMessageHelper helper = new MimeMessageHelper(message, true,"UTF-8");        helper.setFrom(fromUser);        helper.setTo(email.getToEmail());        helper.setSubject(email.getSubject());        helper.setText(email.getContent());        //FileSystemResource file = new FileSystemResource(new File(email.getFilePath()));        File file = new File(email.getFilePath());        String fileName = email.getFilePath().substring(email.getFilePath().lastIndexOf(File.separator));        fileName = MimeUtility.encodeWord(fileName,"UTF-8","B");        //发送多个        helper.addAttachment(fileName,file);        javaMailSender.send(message);    }}

这个工具类的方法只是发送单一内容,复杂的内容,如 图片,附件,文字等,大家可以根据单一的自己去补充下,做个练手。

4.测试用例

@Test    void contextLoads() throws Exception {        /* 发送纯文本        Email email = new Email()                .setToEmail(new String[]{"133******@qq.com"})                .setSubject("测试邮件发送")                .setContent("hello,成功的发送了邮件");        mailUtil.sendEmail(email);*/        /*发送模板邮件        Email email = new Email()                .setToEmail(new String[]{"133******@qq.com"})                .setSubject("测试模板邮件发送");        Context context = new Context();        context.setVariable("title","模板发送");        context.setVariable("content","lalala");        String process = templateEngine.process("emailTpl/emailTpl", context);        email.setContent(process);        mailUtil.sendEmail(email);*/        /*        Email email = new Email()                .setToEmail(new String[]{"133******@qq.com"})                .setSubject("测试邮件发送图片")                .setFilePath("C:\\Users\\GQ\\Pictures\\Camera Roll\\壁纸\\2.jpg");        mailUtil.sendPicture(email);*/        Email email = new Email()                .setToEmail(new String[]{"133******@qq.com"})                .setSubject("测试邮件发送附件")                .setContent("你好,欢迎查阅附件")                .setFilePath("C:\\Users\\GQ\\Downloads\\9月竣工时间表.xls");        mailUtil.sendWithAttachments(email);    }

结果如下图:

纯文本邮件

发送图片

附件

5.小结

ok,今天的一个小demo就到这里了,大家不妨动手试下。不过要注意里面的细节,比如发送图片的cid等等,一不小心就弄错了。刚刚小编就在发送附件这里出错了,截取文件名的时候写成了(0,length)这种。好了,喜欢小编的朋友可以点个关注哦[呲牙][呲牙][呲牙]

标签: #htmlemail模板