Java Email邮件发送简单实现介绍

package com.ljl.email;
import java.io.IOException;
import java.io.OutputStream;
import java.nio.file.Files;
import java.nio.file.Paths;
import javax.mail.MessagingException;
import javax.mail.Multipart;
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.util.ByteArrayDataSource;
import javax.activation.DataHandler;
import javax.mail.BodyPart;
import javax.mail.Message.RecipientType;
public class Demo03 {
	public static void main(String[] args) {
		try {
			//创建Session会话
			Session session = JavaMailUtils.createSession();
			//创建邮件对象(Message抽象类的子类对象)
			MimeMessage msg = new MimeMessage(session);
			msg.setFrom(new InternetAddress("olaiolaio@126.com"));
			msg.setRecipient(RecipientType.TO ,new InternetAddress("2272789133@qq.com"));
			msg.setSubject("这是一份测试邮件","utf-8");//标题
			//邮件内容复合对象
			Multipart multipart = new MimeMultipart();
			//正文
			BodyPart textPart = new MimeBodyPart();
			//参数一：正文内容
			//参数二：内容类型；字符编码机
			textPart.setContent("输了<b>你</b>赢了世界又如何","text/html;charset=utf-8");
			//附件
			BodyPart imagePart = new MimeBodyPart();
			imagePart.setFileName("lin.jpg");
			imagePart.setDataHandler(new DataHandler(new ByteArrayDataSource(Files.readAllBytes(Paths.get("D:\\k\\image\\ljj.jpg")), "application/octet-stream")));
			//添加至邮件内容
			multipart.addBodyPart(textPart);//添加正文
			multipart.addBodyPart(imagePart);//添加附件
			//设置邮件内容
			msg.setContent(multipart);
			//发送
			Transport.send(msg);
		} catch (MessagingException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
}