java发送邮件（包含正文、附件）

1、pom.xml依赖包引入

<dependency>
    <groupId>com.sun.mail</groupId>
    <artifactId>javax.mail</artifactId>
    <version>1.5.5</version>
</dependency>

2、email.properties文件

#email
mail.smtp.host=smtp.mxhichina.com
mail.smtp.socketFactory.port=465
mail.smtp.socketFactory.class=javax.net.ssl.SSLSocketFactory
mail.smtp.auth=true
mail.smtp.port=465


fromEmail=[e-mail]
password=XXXXXXX
toEmail=[e-mail],[e-mail]

3、前期工作

		//创建Properties对象 
		Properties props = new Properties();
		try {
			//ClassUtils.getDefaultClassLoader().getResource("").getPath()获取项目地址
			props.load(new FileInputStream(ClassUtils.getDefaultClassLoader().getResource("").getPath() + File.separator + "email.properties"));
		} catch (Exception e) {
			logger.error(e.getMessage(), e);
		}
		final String fromEmail = props.getProperty("fromEmail");//邮件发起人
		final String password = props.getProperty("password");//邮件发起人密码
		final String toEmail = props.getProperty("toEmail"); //接收人邮件

		//获得网络连接验证的对象
		Authenticator auth = new Authenticator() {
			//override
			protected PasswordAuthentication getPasswordAuthentication() {
			return new PasswordAuthentication(fromEmail, password);
		}
		};
		//得到默认的对话对象  
		Session session = Session.getDefaultInstance(props, auth);
		//标题
		String subject = "";
		//内容
		StringBuilder temp = new StringBuilder();
		String filePath = "";
		//发送邮件
	 
  
  EmailUtil.sendEmailWithAttachment(session,fromEmail,toEmail,subject,body,filePath);

4、EmailUtil工具类

	 /**
	 * send HTML email with Attachment
	 * @param session
	 * @param fromEmail
	 * @param toEmail
	 * @param subject
	 * @param body
	 * @param fileName
	 */
	public static void sendEmailWithAttachment(Session session, String fromEmail, String toEmail, String subject, String body, String fileName) throws Exception{
		//消息创建
		MimeMessage msg = new MimeMessage(session);
		//set message headers
		msg.addHeader("Content-type", "text/HTML; charset=UTF-8");
		msg.addHeader("format", "flowed");
		msg.addHeader("Content-Transfer-Encoding", "8bit");
		msg.setFrom(new InternetAddress(fromEmail));
		// 创建邮件的接收者地址，并设置到邮件消息中
		Address[] toEmails = null;
		if(toEmail.indexOf(",")>-1) {
			String[] emailList = toEmail.split(",");
			toEmails= new InternetAddress[emailList.length];
			for (int i = 0; i < emailList.length; i ++) {
				toEmails[i] = new InternetAddress(emailList[i]);
			}
		} else {
			toEmails= new InternetAddress[1];
			toEmails[0] = new InternetAddress(toEmail);
		}
		msg.setRecipients(Message.RecipientType.TO,toEmails);
		msg.setSentDate(new Date());
		//标题
		msg.setSubject(subject,"UTF-8");
		//创建body
		MimeMultipart allBodyPart = new MimeMultipart("mixed");
		//创建正文html
		MimeBodyPart htmlBodyPart = new MimeBodyPart();            
		htmlBodyPart.setContent(body,"text/html;charset=gb2312");  
		allBodyPart.addBodyPart(htmlBodyPart);
		//创建附件
		MimeBodyPart attachBodyPart = new MimeBodyPart();
		FileDataSource source = new FileDataSource(fileName);
		attachBodyPart.setDataHandler(new DataHandler(source));
		//不带路径文件名称
		File tempFile =new File(fileName.trim());
		attachBodyPart.setFileName(tempFile.getName());
		allBodyPart.addBodyPart(attachBodyPart);
		//设置整个邮件内容为最终组合出的MimeMultipart对象
		msg.setContent(allBodyPart);
		  
		//发送邮件
		Transport transport = session.getTransport("smtp");
		//transport.connect("smtp.mxhichina.com" , 465 , fromEmail, password);链接邮件服务器
		transport.send(msg);
	}