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java給釘釘郵箱發(fā)送郵件功能實(shí)現(xiàn)

更新時(shí)間：2025年02月27日 09:21:43 作者：o0麥嘎

文章介紹了如何使用Java給釘釘郵箱發(fā)送郵件,包括開通POP和IMAP、引入pom、邏輯處理、直接添加前端傳來的MultipartFile、添加多個附件以及給多個郵箱發(fā)送郵件等步驟,感興趣的朋友一起看看吧

1.開通POP和IMAP

2.引入pom

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

3.邏輯

String host = "smtp.qiye.aliyun.com";
String port = "465";
String username = "xxxxxx@dingtalk.com"; // 釘釘發(fā)送者郵箱
String password = "xxxxxx"; // 發(fā)送者郵箱賬號
String toEmail = "xxxxx@dingtalk.com"; // 釘釘接收者郵箱
String subject = "郵件標(biāo)題"
try {
	Properties props = new Properties();
	props.setProperty("mail.smtp.host", host);
	props.setProperty("mail.smtp.port", port);
	props.setProperty("mail.smtp.socketFactory.class","javax.net.ssl.SSLSocketFactory");
 	props.setProperty("mail.smtp.socketFactory.fallback", "false");
	// 啟用調(diào)試
	//props.setProperty("mail.debug", "true");
	props.setProperty("mail.smtp.socketFactory.port", port);
	props.setProperty("mail.smtp.auth", "true");
	// 建立郵件會話
	Session session = Session.getDefaultInstance(props, new Authenticator() {
		@Override
		protected PasswordAuthentication getPasswordAuthentication() {
			return new PasswordAuthentication(username, password);
		}
	});
	// 建立郵件對象
	MimeMessage message = new MimeMessage(session);
	message.setFrom(new InternetAddress(username));
	message.setRecipients(Message.RecipientType.TO, toEmail);
	message.setSubject(subject);
	MimeMultipart multipart = new MimeMultipart();
	BodyPart contentPart = new MimeBodyPart();
	// 郵件正文
	contentPart.setContent(content, "text/html;charset=utf-8");
	 multipart.addBodyPart(contentPart);
	// 附件
	MimeBodyPart attachmentBodyPart = new MimeBodyPart();
	// 讀取本地文件，如果是前端傳過來的MultipartFile文件，需要將MultipartFile轉(zhuǎn)為file，再通過下面的方式：
	// File file = MultipartFileToFile(multipartFile);
	// DataSource source = new FileDataSource(file);
	// attachmentBodyPart.setDataHandler(new DataHandler(source));
	DataHandler dataHandler = new DataHandler(new FileDataSource("E:\\soft\\test.doc");
	attachmentBodyPart.setDataHandler(dataHandler);
	attachmentBodyPart.setFileName("test.doc");
	multipart.addBodyPart(attachmentBodyPart);
	// 設(shè)置郵件整體內(nèi)容
	message.setContent(multipart);
	Transport.send(message);
} catch (Exception e) {
	e.printStackTrace();
}

4.直接添加前端傳過來的MultipartFile

.....
MimeMultipart multipart = new MimeMultipart();
BodyPart contentPart = new MimeBodyPart();
// 郵件正文
contentPart.setContent(content, "text/html;charset=utf-8");
multipart.addBodyPart(contentPart);
// 附件--這里改下
MimeBodyPart attachmentBodyPart = new MimeBodyPart();
File file = MultipartFileToFile(multipartFile);
DataSource source = new FileDataSource(file);
attachmentBodyPart.setDataHandler(new DataHandler(source));
attachmentBodyPart.setFileName(file.getName());
multipart.addBodyPart(attachmentBodyPart);
// 設(shè)置郵件整體內(nèi)容
message.setContent(multipart);
Transport.send(message);
.....

5.添加多個附件

MimeMultipart multipart = new MimeMultipart();
BodyPart contentPart = new MimeBodyPart();
// 郵件正文
contentPart.setContent(content, "text/html;charset=utf-8");
multipart.addBodyPart(contentPart);
// 附件--這里改下
for (MultipartFile multipartFile : files){
	MimeBodyPart attachmentBodyPart = new MimeBodyPart();
	File file = MultipartFileToFile(multipartFile);
	DataSource source = new FileDataSource(file);
	//添加附件的內(nèi)容
	attachmentBodyPart.setDataHandler(new DataHandler(source));
	//添加附件的標(biāo)題
	attachmentBodyPart.setFileName(file.getName());
	multipart.addBodyPart(filePart);
}
// 設(shè)置郵件整體內(nèi)容
message.setContent(multipart);
Transport.send(message);

6.給多個郵箱發(fā)郵件

String tos = "a1@dingtalk.com,a2@dingtalk.com,a3@dingtalk.com";
String[] toList = to.split(",");
Address[] addresses = new Address[toList.length];
for (int i = 0; i < toList.length; i++) {
	addresses[i] = new InternetAddress(toList[i]);
}
message.setRecipients(Message.RecipientType.TO, addresses);

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