JavaMail发送邮件

最近使用JavaMail发送邮件，写下demo纪念一下，并希望帮到需要的朋友

import java.io.FileOutputStream;
import java.util.Properties;

import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.mail.Message;
import javax.mail.Session;
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;

/**
 * 邮件发送demo，注意邮箱SMTP设置是否打开
 * @author 
 *
 */
public class SendMail {

	public static void main(String[] args) throws Exception {
		
		Properties props = new Properties();
		props.setProperty("mail.host", "smtp.exmail.qq.com");
		props.setProperty("mail.transport.protocol", "smtp");
		props.setProperty("mail.smtp.auth", "true");
		
		//使用JavaMail发送邮件的5个步骤
		//1、创建session
		Session session = Session.getInstance(props);
		//开启Session的debug模式，这样就可以查看到程序发送Email的运行状态
		session.setDebug(true);
		//2、通过session得到transport对象
		Transport ts = session.getTransport();
		//3、使用邮箱的用户名和密码连上邮件服务器，发送邮件时，发件人需要提交邮箱的用户名和密码给smtp服务器，用户名和密码都通过验证之后才能够正常发送邮件给收件人。
		ts.connect("smtp.exmail.qq.com", MailUtil.name, MailUtil.pwd);
		//4、创建邮件
		Message message = createMixedMail(session);
		//5、发送邮件
		ts.sendMessage(message, message.getAllRecipients());
		ts.close();
		
	}
	
	/**
	 * 发送简单文本
	 * @param session
	 * @return
	 * @throws Exception
	 */
	public static MimeMessage createSimpleMail(Session session)
	             throws Exception {
	         //创建邮件对象
	         MimeMessage message = new MimeMessage(session);
	         //指明邮件的发件人
	         message.setFrom(new InternetAddress(MailUtil.name));
	         //指明邮件的收件人，现在发件人和收件人是一样的，那就是自己给自己发
	         message.setRecipient(Message.RecipientType.TO, new InternetAddress("收件人邮箱"));
	         //邮件的标题
	         message.setSubject("只包含文本的简单邮件");
	         //邮件的文本内容
	         message.setContent("你好啊！", "text/html;charset=UTF-8");
	         //返回创建好的邮件对象
	         return message;
	 }
	
	
	/**
	 * 生成一封邮件正文带图片的邮件
	 * @param session
	 * @return
	 * @throws Exception
	 */
	public static MimeMessage createImageMail(Session session) throws Exception {
        //创建邮件
        MimeMessage message = new MimeMessage(session);
        // 设置邮件的基本信息
        //发件人
        message.setFrom(new InternetAddress(MailUtil.name));
        //收件人
        message.setRecipient(Message.RecipientType.TO, new InternetAddress("收件人邮箱"));
        //邮件标题
        message.setSubject("带图片的邮件");

        // 准备邮件数据
        // 准备邮件正文数据
        MimeBodyPart text = new MimeBodyPart();
        text.setContent("这是一封邮件正文带图片的邮件", "text/html;charset=UTF-8");
        // 准备图片数据
        MimeBodyPart image = new MimeBodyPart();
        DataHandler dh = new DataHandler(new FileDataSource("WebContent\\WEB-INF\\images\\1.png"));
        image.setDataHandler(dh);
        image.setContentID("xxx.jpg");
        // 描述数据关系
        MimeMultipart mm = new MimeMultipart();
        mm.addBodyPart(text);
        mm.addBodyPart(image);
        mm.setSubType("related");

        message.setContent(mm);
        message.saveChanges();
        
        //返回创建好的邮件
        return message;
    }
	
	
	/**
	 * 创建带附件的邮件
	 * @param session
	 * @return
	 * @throws Exception
	 */
	public static MimeMessage createAttachMail(Session session) throws Exception{
		
		//创建邮件对象
		MimeMessage message = new MimeMessage(session);
		//发件人
		message.setFrom(new InternetAddress(MailUtil.name));
		//收件人
		message.setRecipient(Message.RecipientType.TO, new InternetAddress("收件人邮箱"));
		//标题
		message.setSubject("JavaMail邮件发送测试");
		
		//创建邮件正文，为了避免邮件正文中文乱码问题，需要使用charset=UTF-8指明字符编码
        MimeBodyPart text = new MimeBodyPart();
        text.setContent("使用JavaMail创建的带附件的邮件", "text/html;charset=UTF-8");
        
        //创建邮件附件
        MimeBodyPart attach = new MimeBodyPart();
        DataHandler dh = new DataHandler(new FileDataSource("WebContent\\WEB-INF\\images\\2.png"));
        attach.setDataHandler(dh);
        attach.setFileName(dh.getName());
        
        //创建容器描述数据关系
        MimeMultipart mp = new MimeMultipart();
        mp.addBodyPart(text);
        mp.addBodyPart(attach);
        mp.setSubType("mixed");
        
        message.setContent(mp);
        message.saveChanges();
        
        //返回生成的邮件
        return message;
		
	}
	
	/**
	 * 图片和附件混合的邮件
	 * @param session
	 * @return
	 * @throws Exception
	 */
	public static MimeMessage createMixedMail(Session session) throws Exception {
        //创建邮件
        MimeMessage message = new MimeMessage(session);
        
        //设置邮件的基本信息
        message.setFrom(new InternetAddress(MailUtil.name));
        message.setRecipient(Message.RecipientType.TO, new InternetAddress("收件人邮箱"));
        message.setSubject("带附件和带图片的的邮件");

        //正文
        MimeBodyPart text = new MimeBodyPart();
        text.setContent("这是一封邮件正文带图片的邮件", "text/html;charset=UTF-8");
        
        //图片
        MimeBodyPart image = new MimeBodyPart();
        image.setDataHandler(new DataHandler(new FileDataSource("WebContent\\WEB-INF\\images\\2.png")));
        image.setContentID("aaa.jpg");

        //附件1
        MimeBodyPart attach = new MimeBodyPart();
        DataHandler dh = new DataHandler(new FileDataSource("WebContent\\WEB-INF\\images\\1.png"));
        attach.setDataHandler(dh);
        attach.setFileName(dh.getName());
        
        //附件2
        MimeBodyPart attach2 = new MimeBodyPart();
        DataHandler dh2 = new DataHandler(new FileDataSource("WebContent\\WEB-INF\\images\\资料.rar"));
        attach2.setDataHandler(dh2);
        attach2.setFileName(MimeUtility.encodeText(dh2.getName()));//附件中文乱码问题
        
        //描述关系:正文和图片
        MimeMultipart mp1 = new MimeMultipart();
        mp1.addBodyPart(text);
        mp1.addBodyPart(image);
        mp1.setSubType("related");
            
        //描述关系:正文和附件
        MimeMultipart mp2 = new MimeMultipart();
        
        //代表正文的bodypart,其中正文内容要放在附件之前，否则会被当成附件
        MimeBodyPart content = new MimeBodyPart();
        content.setContent(mp1);
        mp2.addBodyPart(content);
        mp2.addBodyPart(attach);
        mp2.addBodyPart(attach2);
        mp2.setSubType("mixed");
        
        message.setContent(mp2);
        message.saveChanges();
        
        //返回创建好的的邮件
        return message;
    }
	
	

}