Springboot发送邮件

用户3467126

发布于 2019-07-03 18:13:09

7290

发布于 2019-07-03 18:13:09

文章被收录于专栏：爱编码爱编码

简介

Spring提供了非常好用的 JavaMailSender接口实现邮件发送。在Spring Boot的Starter模块中也为此提供了自动化配置。下面通过实例看看如何在Spring Boot中使用 JavaMailSender 发送邮件。

目标

实现发送简单的邮件发送
实现发送带附件的邮件发送

过程

1.导入依赖 spring提供了操作邮箱的相关工具包。开箱即用（哈哈哈）,添加相关依赖如下：

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

2.邮箱配置 既然要发送邮件，那么你肯定能够想到这里是需要配置你邮箱的账号和密码的，要不然你是想随便就能发的么（想想都觉得不合理）。所以相关yml配置文件如下：

  #邮箱配置
  spring:
    mail:
      host: smtp.163.com
      #发送者邮箱账号
      username: 你的邮箱@163.com
      #发送者密钥
      password: 你的密钥
      default-encoding: utf-8
      port: 465   #端口号465或587
      protocol: smtp
      properties:
        mail:
          debug:
            false
          smtp:
            socketFactory:
              class: javax.net.ssl.SSLSocketFactory

这里有个地方需要注意的就是那个密码password用你自己平时登陆的密码可能不行。那么你可以参考以下的邮箱授权配置如下图：

邮箱授权码

3.邮箱操作服务类 此处有几个点需要注意的

mail.mime.splitlongparameters :这个是为了禁用附件名过长会被自动截取的功能
@Async ：由于发送邮件是调用第三方的接口，如果你加上带附件的话，此处就需要特别长的时间，所以Async 是为了异步处理，而快速返回响应客户端，等处理完成再提醒发送是否成功。

具体操作如下

@Service
public class MailService {

    private final Logger logger = LoggerFactory.getLogger(this.getClass());

    @Autowired
    private JavaMailSender javaMailSender;

    @Value("${spring.mail.username}")
    private String from;

    private static String projectPath = StringUtils
            .substringBefore(System.getProperty("user.dir").replaceAll("\\\\", "/"), "/");


    static {
        System.setProperty("mail.mime.splitlongparameters", "false");
    }


    /**
     * 发送简易邮件
     */
    @Async
    public void sendSimpleMail(MailBean mailBean) throws Exception {
        SimpleMailMessage message = new SimpleMailMessage();
        message.setFrom(from);//发送方
        message.setTo(mailBean.getReceiver().split(";"));//接收者
        message.setSubject(mailBean.getSubject());//主题
        message.setText(mailBean.getContent());//内容
        javaMailSender.send(message);
        logger.info("简单邮件已经发送。");
    }




    /**
     * 发送带多附件的邮件
     *
     * @param mailBean
     * @throws Exception
     */
    @Async
    public void sendMultiAttachmentsMail(MailBean mailBean) throws Exception {

        MimeMessage message = javaMailSender.createMimeMessage();
        // true表示需要创建一个multipart message
        MimeMessageHelper helper = new MimeMessageHelper(message, true);
        helper.setFrom(from);
        helper.setTo(mailBean.getReceiver().split(";"));
        helper.setSubject(mailBean.getSubject());
        helper.setText(mailBean.getContent());

        String[] files = mailBean.getAttachment().split("\\|");
        for (String fileName : files) {
            String path = projectPath + "/temp/" + fileName;
            FileSystemResource file = new FileSystemResource(path);
            if (file.exists() && file.isFile()) {
                helper.addAttachment(fileName, file);
            }
        }

        javaMailSender.send(message);
        logger.info("带附件的邮件已经发送。");
    }


    /**
     * 发送邮件-邮件正文是HTML
     *
     * @param mailBean
     * @throws Exception
     */
    @Async
    public void sendMailHtml(MailBean mailBean) throws Exception {

        MimeMessage mimeMessage = javaMailSender.createMimeMessage();
        MimeMessageHelper helper = new MimeMessageHelper(mimeMessage);

        helper.setFrom(from);
        helper.setTo(mailBean.getReceiver().split(";"));
        helper.setSubject(mailBean.getSubject());
        helper.setText(mailBean.getContent(), true);

        javaMailSender.send(mimeMessage);

    }

    /**
     * 内联资源（静态资源）邮件发送 由于邮件服务商不同，可能有些邮件并不支持内联资源的展示 在测试过程中，新浪邮件不支持，QQ邮件支持
     * 不支持不意味着邮件发送不成功，而且内联资源在邮箱内无法正确加载
     *
     * @param mailBean
     * @throws Exception
     */
    @Async
    public void sendMailInline(MailBean mailBean) throws MessagingException {

        MimeMessage mimeMessage = javaMailSender.createMimeMessage();
        MimeMessageHelper helper = new MimeMessageHelper(mimeMessage);

        helper.setFrom(from);
        helper.setTo(mailBean.getReceiver().split(";"));
        helper.setSubject(mailBean.getSubject());

//        helper.setText(mailBean.getContent(),true);
        //        helper.addInline();
        helper.setText("my text <img src='cid:myLogo'>", true);
        helper.addInline("myLogo", new ClassPathResource("img/mylogo.gif"));
        javaMailSender.send(mimeMessage);

//        mailSender.send(new MimeMessagePreparator() {
//            public void prepare(MimeMessage mimeMessage) throws MessagingException {
//                MimeMessageHelper message = new MimeMessageHelper(mimeMessage, true, "UTF-8");
//                message.setFrom("me@mail.com");
//                message.setTo("you@mail.com");
//                message.setSubject("my subject");
//                message.setText("my text <img src='cid:myLogo'>", true);
//                message.addInline("myLogo", new ClassPathResource("img/mylogo.gif"));
//                message.addAttachment("myDocument.pdf", new ClassPathResource("doc/myDocument.pdf"));
//            }
//        });

    }

    /**
     * 模板邮件发送
     *
     * @param mailBean
     * @throws Exception
     */
    @Async
    public void sendMailTemplate(MailBean mailBean) throws MessagingException {

        MimeMessage mimeMessage = javaMailSender.createMimeMessage();
        MimeMessageHelper helper = new MimeMessageHelper(mimeMessage, true);
        helper.setFrom(from);
        helper.setTo(mailBean.getReceiver().split(";"));
        helper.setSubject(mailBean.getSubject());
        helper.setText(mailBean.getContent(), true);
        javaMailSender.send(mimeMessage);

    }
}

4.页面参考如下 普通的表单提交加上多附件上传。

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <title>邮件发送</title>
    <link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/css/bootstrap.min.css">
    <script src="https://cdn.staticfile.org/jquery/2.1.1/jquery.min.js"></script>
    <script src="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/js/bootstrap.min.js"></script>
</head>
<body>
<div style="margin-left: 20px;">
    <form role="form">
        <div class="form-group">
            <label>收件人</label>
            <input style="width: 300px;" type="text" class="form-control" id="receiver" name="receiver"
                   placeholder="收件人">
        </div>
        <div class="form-group">
            <label>主题</label>
            <input style="width: 300px;" type="text" class="form-control" id="subject" name="subject" placeholder="主题">
        </div>
        <div class="form-group">
            <label>内容</label>
            <input style="width: 300px;" type="text" class="form-control" id="content" name="content" placeholder="内容">
        </div>
        <div class="form-group">
            <label>附件</label>
            <form>
                <input  type="file" multiple id="file" name="file[]" >
                <input  type="button" id="btn" value="上传"/>
            </form>
            <input type="hidden" id="attachment" name="attachment">
        </div>

        <button type="submit" id="send" class="btn btn-default">提交</button>
    </form>
</div>
<script>
    $(function () {
        $('#send').click(function () {
            var d = {};
            var t = $('form').serializeArray();
            $.each(t, function () {
                d[this.name] = this.value;
            });
            console.log(JSON.stringify(d));

            $.ajax({
                type: "POST",
                url: "/mail/send",
                data: JSON.stringify(d),
                cache: false,
                contentType: "application/json; charset=utf-8",
                dataType: "json",
                success: function (data) {
                    alert(data.message);
                },
                error: function (err) {
                    alert(err);
                }
            });
        });

        $("#btn").click(function(){

            var formData = new FormData();
            for(var i=0; i<$('#file')[0].files.length;i++){
                formData.append('file', $('#file')[0].files[i]);
            }

            $.ajax({
                type: "POST",
                data: formData,
                url: "/mail/upload",
                contentType: false,
                processData: false,
            }).success(function (res) {
                var data = res.data;
                if (res.status) {
                    var attachUrls = "";
                    for(var i = 0;i<data.length;i++){
                        var item = data[i];
                        attachUrls += item.url+"|";
                    }
                    $("#attachment").val(attachUrls);
                    console.log(attachUrls);
                } else {
                    console.log(res.message);
                }
            }).error(function (data) {
                alert(data);
                console.log(data);
            });

        });

    });
</script>
</body>
</html>