雖然報錯,但是能生成eml檔案. 

JavaMail03:

package com.yuming.test;

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

import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.activation.FileDataSource;
import javax.mail.Session;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;
import javax.mail.internet.MimeUtility;

public class JavaMail03 {

	public static void main(String[] args) throws Exception {
		
		Session session = Session.getInstance(new Properties());
		MimeMessage msg = new MimeMessage(session);
		
		msg.setSubject("");
		
		//mixed---混合關係
		MimeMultipart  msgMultipart = new MimeMultipart("mixed");
		msg.setContent(msgMultipart);
		msg.getReplyTo();
		
		//html body與附件整合
		//body
		MimeBodyPart content = new MimeBodyPart();
		//附件1
		MimeBodyPart attch1 = new MimeBodyPart();
		//附件2
		MimeBodyPart attch2 = new MimeBodyPart();
		
		msgMultipart.addBodyPart(content);
		msgMultipart.addBodyPart(attch1);
		msgMultipart.addBodyPart(attch2);
		
		//附件1
	    DataSource ds = new FileDataSource("");
		DataHandler dh1 = new DataHandler(ds );
		attch1.setDataHandler(dh1);
		attch1.setFileName("");
		
		//附件2
		 DataSource ds2 = new FileDataSource("");
		 DataHandler dh2 = new DataHandler(ds2 );
		 attch1.setDataHandler(dh2);
		 attch2.setFileName("");
		 
		 //內容 related--關聯關係
		 MimeMultipart  bodyMultipart = new MimeMultipart("related");
		 content.setContent(bodyMultipart);
		 
		 MimeBodyPart htmlpart = new MimeBodyPart();
		 MimeBodyPart gifpart = new MimeBodyPart();
		 bodyMultipart.addBodyPart(htmlpart);
		 bodyMultipart.addBodyPart(gifpart);
	
		 DataSource gifds = new FileDataSource("");
		 DataHandler gifdh = new DataHandler(gifds );
		 gifpart.setDataHandler(gifdh);
		 gifpart.setHeader("Content-Location", "");
		 
		 //htmlpart
		 htmlpart.setContent("", "text/html;charset=UTF-8");
		 
		 //根據這些物件生成郵件
		 msg.saveChanges();
		 
		 OutputStream os =  new FileOutputStream("");
		 msg.writeTo(os);
		// msg.writeTo(os);
		 os.close();
		 

	}


}