Jodd版本：
<dependency>
<groupId>org.jodd</groupId>
<artifactId>jodd-mail</artifactId>
<version>3.7</version>
</dependency>
发送一封简单的邮件：
package jodd.emial; import java.io.File; import java.io.IOException; import jodd.io.FileUtil; import jodd.mail.Email; import jodd.mail.EmailAttachment; import jodd.mail.EmailMessage; import jodd.mail.SendMailSession; import jodd.mail.SmtpSslServer; import jodd.mail.att.ByteArrayAttachment; import jodd.mail.att.FileAttachment; import jodd.util.MimeTypes; public class JoddDemo { public static void main(String[] args) { try { sendEmail(); } catch (IOException e) { e.printStackTrace(); } } private static void sendEmail() throws IOException { // 创建邮件 Email email = Email.create(); // 设置邮件发送人 email.from("su***g@qq.com"); // 设置收件人 email.to("64***76@qq.com"); // 设置邮件主题 email.subject("测试邮件"); // 设置邮件内容，text格式 @SuppressWarnings("unused") EmailMessage textMessage = new EmailMessage("Hello", MimeTypes.MIME_TEXT_PLAIN); // 设置邮件内容，html格式 EmailMessage htmlMessage = new EmailMessage("<html><META http-equiv=Content-Type content="text/html; " + "charset=utf-8"><body><h1>Hey!</h1><img src='cid:dongman1.jpg'>" + "<h2>Hay!</h2></body></html>", MimeTypes.MIME_TEXT_HTML); // 将邮件内容添加到邮件中 email.addMessage(htmlMessage); // 创建字节数组附件 EmailAttachment emailAttachment = new ByteArrayAttachment( FileUtil.readBytes(JoddDemo.class.getResource("/image/dongman1.jpg").getPath()), // 将图片读取存到字节数组中 "image/jpg", // 附件文件类型 "dongman1.jpg", // 附件名字 "dongman1.jpg" );// 对应前面创建的cid名字，使用内联方式嵌入 // 因为是内联方式，所以必须添加到内容中 emailAttachment.setEmbeddedMessage(htmlMessage); EmailAttachment emailAttachment2 = new FileAttachment( new File(JoddDemo.class.getResource("/image/dongman2.jpg").getPath()), "dongman2.png", "dongman2.png"); // 将附件添加到邮件中 email.attach(emailAttachment); email.attach(emailAttachment2); // 发送邮件 SmtpSslServer smtpServer = SmtpSslServer.create("smtp.exmail.qq.com").authenticateWith("sug***ng@qq.com", "Ad***55"); // smtpServer.timeout(10); // smtpServer.properties(properties); SendMailSession session = smtpServer.createSession(); session.open(); session.sendMail(email); session.close(); } }