java发邮件实例

首先导入附件中的mail.jar和activation.jar
具体发邮件程序如下：

package mail;

import java.io.IOException;
import java.util.Properties;

import javax.mail.Authenticator;
import javax.mail.Message.RecipientType;
import javax.mail.MessagingException;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.AddressException;
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;

public class SendMailTest {
	public static void main(String[] args) throws AddressException, MessagingException, IOException {
		//method1();// 发送不带附件的邮件
		method2();// 发送带附件的邮件
	}

	/**
	 * 发送邮件(不带附件)
	 * @throws MessagingException 
	 * @throws AddressException 
	 */
	public static void method1() throws AddressException, MessagingException{
		// 1,得到session

		Properties pro = new Properties();
		pro.setProperty("mail.host", "smtp.163.com");
		pro.setProperty("mail.smtp.auth", "true");

		Authenticator auth = new Authenticator() {
			@Override
			protected PasswordAuthentication getPasswordAuthentication() {
				// 此处设置发件人的用户名密码
				return new PasswordAuthentication("w6037", "w687!");
			}
		};

		Session session = Session.getInstance(pro, auth);

		// 2,创建MimeMessage
		MimeMessage msg = new MimeMessage(session);

		msg.setFrom(new InternetAddress("[e-mail]"));// 设置发件人
		msg.setRecipients(RecipientType.TO, "[e-mail]");// 设置收件人
		msg.setRecipients(RecipientType.CC, "[e-mail]");// 设置抄送人
		msg.setRecipients(RecipientType.BCC, "[e-mail]");// 设置密送人

		msg.setSubject("来自本天才的邮件");// 设置邮件标题
		msg.setContent("这是一封测试邮件，请查收", "text/html;charset=UTF-8");// 设置邮件内容

		// 发送邮件
		Transport.send(msg);
	}
	
	/**
	 * 发送邮件(带附件)
	 * @throws AddressException
	 * @throws MessagingException
	 * @throws IOException 
	 */
	public static void method2() throws AddressException, MessagingException, IOException {
		// 1,得到session

		Properties pro = new Properties();
		pro.setProperty("mail.host", "smtp.163.com");
		pro.setProperty("mail.smtp.auth", "true");

		Authenticator auth = new Authenticator() {
			@Override
			protected PasswordAuthentication getPasswordAuthentication() {
				// 设置发件人用户名密码
				return new PasswordAuthentication("w6037", "w688!");
			}
		};

		Session session = Session.getInstance(pro, auth);

		// 2,创建MimeMessage
		MimeMessage msg = new MimeMessage(session);

		msg.setFrom(new InternetAddress("[e-mail]"));// 设置发件人
		msg.setRecipients(RecipientType.TO, "[e-mail]");// 设置收件人
		msg.setRecipients(RecipientType.CC, "[e-mail]");// 设置抄送人
		msg.setRecipients(RecipientType.BCC, "[e-mail]");// 设置密送人

		msg.setSubject("来自本天才的邮件");// 设置邮件标题
		
		MimeMultipart list=new MimeMultipart();
		
		MimeBodyPart content=new MimeBodyPart();
		content.setContent("这是一封带附件的测试邮件","text/html;charset=UTF-8");//设置邮件内容
		
		MimeBodyPart file=new MimeBodyPart();
		file.attachFile("D:\\1.txt");//设置要上传附件
		file.setFileName(MimeUtility.encodeText("欧巴刚那斯达.txt"));//在邮件中显示的附件名称,MimeUtility.encodeText用来处理中文乱码
		
		list.addBodyPart(content);
		list.addBodyPart(file);
		msg.setContent(list);

		// 发送邮件
		Transport.send(msg);
	}
}