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复合邮件的整体结构图
MIME中的组合关系
复合邮件的分隔线层次结构分析
邮件组织结构相关的API
MimeMessage类表示整封邮件。
MimeBodyPart类表示邮件的一个MIME消息。
MimeMultipart类表示一个由多个MIME消息组合成的组合MIME消息。
javaMail生成包含附件和嵌套图片的复合邮件：
package edu.mail.util;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Properties;
import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.activation.FileDataSource;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.Message.RecipientType;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;
public class SendMultipartMessageDemo3 {
public static void main(String[] args) throws MessagingException, IOException {
Properties props = new Properties();
Session session = Session.getInstance(props);
session.setDebug(true);
Message msg = new MimeMessage(session);
msg.setSubject("the first multipart javaMail");
//设置发送人
msg.setFrom(new InternetAddress("xh216319@163.com"));
//设置收件人
msg.setRecipients(RecipientType.TO, InternetAddress.parse("itstar1965@sina.com,xh216319@163.com"));
//设置抄送人
msg.setRecipient(RecipientType.CC,new InternetAddress("itstar1965@sohu.com"));
//设置密送人
msg.setRecipient(RecipientType.BCC,new InternetAddress("1277040964@qq.com"));
MimeMultipart msgMultipart = new MimeMultipart("mixed");
msg.setContent(msgMultipart);
//为message对象创建content组件和attch组件
MimeBodyPart content = new MimeBodyPart();
MimeBodyPart attch1 = new MimeBodyPart();
MimeBodyPart attch2 = new MimeBodyPart();
//将两个附件对象和正文对象添加到msgMultipart对象
msgMultipart.addBodyPart(content);
msgMultipart.addBodyPart(attch1);
msgMultipart.addBodyPart(attch2);
//为附件1关联数据源
DataSource ds1 = new FileDataSource("C:\\Documents and Settings\\Administrator\\桌面\\river.jpg");
DataHandler dh1 = new DataHandler(ds1);
attch1.setDataHandler(dh1);
attch1.setFileName("river.jpg");
//为附件2关联数据源
DataSource ds2 = new FileDataSource("C:\\Documents and Settings\\Administrator\\桌面\\mail.bat");
DataHandler dh2 = new DataHandler(ds2);
attch2.setDataHandler(dh2);
attch2.setFileName("mail.bat");
//因为正文content也是一个Multipart对象,其组件是related关系，所以content.setContent(contentMultipart)
MimeMultipart contentMultipart = new MimeMultipart("related");
content.setContent(contentMultipart);
//为contentMultipart创建htmlPart组件和gifPart组件
MimeBodyPart htmlPart = new MimeBodyPart();
MimeBodyPart gifPart = new MimeBodyPart();
//将htmlPart和gifPart对象添加到contentMultipart对象
contentMultipart.addBodyPart(htmlPart);
contentMultipart.addBodyPart(gifPart);
DataSource ds3 = new FileDataSource("C:\\Documents and Settings\\Administrator\\桌面\\2012_03130103.JPG");
DataHandler dh3 = new DataHandler(ds3);
gifPart.setDataHandler(dh3);
gifPart.setFileName("itstar.gif");
gifPart.setHeader("Content-Location", "http://www.csdn.net/itstar.gif");
//这里src="http://www.csdn.net/itstar.gif"实际上指向的是其关联的gifPart对象
htmlPart.setContent("这是我的第一个复合结构的JavaMail，我的照片<img height=100px,width=80px src='http://www.csdn.net/itstar.gif'/>","text/html;charset=utf-8");
//保存message所做的改变
msg.saveChanges();
OutputStream ops = new FileOutputStream("C:\\Documents and Settings\\Administrator\\桌面\\SendMultipartMessageDemo3.eml");
//将message对象写入文件流中
msg.writeTo(ops);
ops.close();
}
}
生成的SendMultipartMessageDemo3.eml邮件打开后:
