废话不多说，直接贴代码：
<!-- maven 依赖 -->
<dependency>
<groupId>javax.mail</groupId>
<artifactId>mail</artifactId>
<version>1.4.7</version>
</dependency>
package com.example.zgz.demo; import java.io.File; import java.util.List; /** * @author zhangguangze * @version v1.0 * @project: zgz * @description: 这里描述类的用处 * @copyright: © 2018 * @company: * @date 2018/5/17 15:02 */ public class SendEmailVO { private String from; private String password; private String subject; private String content; private List<String> toArr; private List<String> ccArr; private List<File> attachArr; public String getFrom() { return from; } public void setFrom(String from) { this.from = from; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } public String getSubject() { return subject; } public void setSubject(String subject) { this.subject = subject; } public String getContent() { return content; } public void setContent(String content) { this.content = content; } public List<String> getToArr() { return toArr; } public void setToArr(List<String> toArr) { this.toArr = toArr; } public List<String> getCcArr() { return ccArr; } public void setCcArr(List<String> ccArr) { this.ccArr = ccArr; } public List<File> getAttachArr() { return attachArr; } public void setAttachArr(List<File> attachArr) { this.attachArr = attachArr; } }
package com.example.zgz.demo; import javax.mail.PasswordAuthentication; import javax.mail.Session; import java.util.ArrayList; import java.util.List; import java.util.Properties; import javax.activation.DataHandler; import javax.activation.DataSource; import javax.activation.FileDataSource; import javax.mail.Authenticator; import javax.mail.BodyPart; import javax.mail.Message; import javax.mail.Transport; import javax.mail.internet.InternetAddress; import javax.mail.internet.MimeBodyPart; import javax.mail.internet.MimeMessage; import javax.mail.internet.MimeMultipart; import javax.mail.internet.MimeUtility; import java.io.File; import java.util.Date; /** * @author zhangguangze * @version v1.0 * @project: zgz * @description: 这里描述类的用处 * @copyright: © 2018 * @company: * @date 2018/5/17 13:56 */ public class EmailUtil { private static String host = "mail.qq.com"; private static String port = "25"; private static String userName = "xx@qq.com"; private static String password = "xxxxx"; /** * 发送邮件 * * @throws Exception */ private static void sendMail(SendEmailVO vo) throws Exception { Message mailMessage = getMessage(vo); MimeMultipart multipart = new MimeMultipart("mixed"); //设置正文 BodyPart messageBodyPart = new MimeBodyPart(); String content = vo.getContent(); messageBodyPart.setContent(content, "text/html; charset=utf-8"); multipart.addBodyPart(messageBodyPart); //设置附件 MimeBodyPart fileBodyPart; if(vo.getAttachArr()!=null && vo.getAttachArr().size()>0){ for(File f :vo.getAttachArr()){ fileBodyPart = new MimeBodyPart(); DataSource fds = new FileDataSource(f); fileBodyPart.setDataHandler(new DataHandler(fds)); fileBodyPart.setFileName(MimeUtility.encodeWord(f.getName())); multipart.addBodyPart(fileBodyPart); } } // 设置邮件消息的主要内容 mailMessage.setContent(multipart); // 发送邮件 Transport.send(mailMessage); } private static Message getMessage(SendEmailVO vo) throws Exception{ Properties pro = System.getProperties(); pro.put("mail.smtp.host", host); pro.put("mail.smtp.port", port); pro.put("mail.smtp.auth", "true"); final PasswordAuthentication authentication = new PasswordAuthentication(vo.getFrom(),vo.getPassword()); // 根据邮件会话属性和密码验证器构造一个发送邮件的session Session session = Session.getDefaultInstance(pro, new Authenticator() { @Override protected PasswordAuthentication getPasswordAuthentication() { return authentication; } } ); // 根据session创建一个邮件消息 Message mailMessage = new MimeMessage(session); // 设置邮件消息的发送者 mailMessage.setFrom(new InternetAddress(vo.getFrom())); // 接收者 List<String> toArr = vo.getToArr(); ArrayList<InternetAddress> toAddArr = new ArrayList<>(); for(String to : toArr){ if(StringUtils.isNotBlank(to)){ toAddArr.add(new InternetAddress(to)); } } InternetAddress[] toAdds = toAddArr.toArray(new InternetAddress[toAddArr.size()]); mailMessage.setRecipients(Message.RecipientType.TO, toAdds); // 抄送 List<String> ccArr = vo.getCcArr(); if(ccArr != null && ccArr.size()>0){ ArrayList<InternetAddress> ccAddArr = new ArrayList<>(); for(String cc : ccArr){ if(StringUtils.isNotBlank(cc)) { ccAddArr.add(new InternetAddress(cc)); } } if(ccAddArr.size()>0){ InternetAddress[] ccAdds = ccAddArr.toArray(new InternetAddress[ccAddArr.size()]); mailMessage.setRecipients(Message.RecipientType.CC, ccAdds); } } // 设置邮件消息的主题 mailMessage.setSubject(vo.getSubject()); // 设置邮件消息发送的时间 mailMessage.setSentDate(new Date()); return mailMessage; } /** * 发送内嵌图片和附件邮件 * * @throws Exception public void sendImageAndAttachmentMail() throws Exception { Properties pro = System.getProperties(); pro.put("mail.smtp.host", host); pro.put("mail.smtp.port", port); pro.put("mail.smtp.auth", "true"); // 根据邮件会话属性和密码验证器构造一个发送邮件的session Session sendMailSession = Session.getDefaultInstance(pro, new Authenticator() { @Override protected PasswordAuthentication getPasswordAuthentication() { return new PasswordAuthentication(userName, password); } }); // 根据session创建一个邮件消息 Message mailMessage = new MimeMessage(sendMailSession); // 设置邮件消息的发送者 mailMessage.setFrom(new InternetAddress(userName)); // 创建邮件的接收者地址，并设置到邮件消息中 mailMessage.setRecipient(Message.RecipientType.TO, new InternetAddress(to)); // 设置邮件消息的主题 mailMessage.setSubject("Test Email"); // 设置邮件消息发送的时间 mailMessage.setSentDate(new Date()); // 正文 MimeBodyPart text = new MimeBodyPart(); text.setContent("我的头像：<img src='cid:headImg'>", "text/html;charset=UTF-8"); // 正文图片 MimeBodyPart image = new MimeBodyPart(); image.setDataHandler( new DataHandler(new FileDataSource("1_jianggujin.jpg"))); image.setContentID("headImg"); // 附件 MimeBodyPart attach = new MimeBodyPart(); DataHandler dh = new DataHandler(new FileDataSource("1_jianggujin.jpg")); attach.setDataHandler(dh); attach.setFileName(MimeUtility.encodeWord(dh.getName())); // 描述关系:正文和图片 MimeMultipart mp1 = new MimeMultipart(); mp1.addBodyPart(text); mp1.addBodyPart(image); mp1.setSubType("related"); // 正文 MimeBodyPart content = new MimeBodyPart(); content.setContent(mp1); MimeMultipart multipart = new MimeMultipart("mixed"); multipart.addBodyPart(content); multipart.addBodyPart(attach); mailMessage.setContent(multipart); // 发送邮件 Transport.send(mailMessage); } */ public static void main(String[] args) throws Exception { SendEmailVO vo = new SendEmailVO(); vo.setFrom(userName); vo.setPassword(password); vo.setSubject("Test"); vo.setContent("<html><body><div style='font-weight:bold'>Dear All,<br>this is a test email.</div></body></html>"); List<String> toArr = new ArrayList<>(); toArr.add("xxxxx@qq.com"); vo.setToArr(toArr); List<String> ccArr = new ArrayList<>(); ccArr.add("sssss@qq.com"); vo.setCcArr(ccArr); List<File> fileArr = new ArrayList<>(); fileArr.add(new File("F:\\testpdf\\pdf\\test.txt")); vo.setAttachArr(fileArr); EmailUtil.sendMail(vo); } }