java 中发送邮件内容的各种基本生成方式

/*通过JAVAMail发送邮件步骤：
1 构建Session 实例
2 以Session 实例为参数构造MineMessage的空实例
3为 mineMessage 实例设置合适的属性和内容
4 使用抽象类Transprot 的send 或 sendMessage 方法发送邮件
在配置文件设置也行
MailSender 只能发送简单的，JavaMailSender  可以发送复杂的 
*/



简单文本内容方式：

package com.mail.main;

import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Date;
import java.util.Properties;

import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;

/**
 * @author xxxx 
 * @version 創建時間：Sep 26, 2009 2:22:39 PM
 * 類說明：
 */
public class TextMessage {

	/**
	 * @param args
	 * @throws MessagingException 
	 * @throws AddressException 
	 * @throws IOException 
	 * @throws FileNotFoundException 
	 */
	public static void main(String[] args) throws AddressException, MessagingException, FileNotFoundException, IOException {
		// TODO Auto-generated method stub
		String from ="[e-mail]";
		String to = "[e-mail]";
		String subject ="test";
		String body ="This is a test  of text	mail";
		//创建Session 实例对象
		Session session = Session.getDefaultInstance(new Properties());
		//创建MimeMessage 实例对象
		MimeMessage msg =new MimeMessage(session);
		//设置发件人
		msg.setFrom(new InternetAddress(from));
		//to 
		msg.setRecipients(Message.RecipientType.TO,InternetAddress.parse(to));
		//date
		msg.setSentDate(new Date());
		//subject
		msg.setSubject(subject);
		msg.setText(body);
		//保存最终生成的邮件内容
		msg.saveChanges();
		//把MIMEMessage 对象中的内容写到文件中
		msg.writeTo(new FileOutputStream("d:\\test.eml"));

	}

}

带图片的方式：

package com.mail.main;

import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Date;
import java.util.Properties;

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

/**
 * @author  xxxxxx
 * @version 創建時間：Sep 26, 2009 2:22:39 PM
 * 類說明：
 */
public class PictureMessage {

	/**
	 * @param args
	 * @throws MessagingException 
	 * @throws AddressException 
	 * @throws IOException 
	 * @throws FileNotFoundException 
	 */
	public static void main(String[] args) throws AddressException, MessagingException, FileNotFoundException, IOException {
		// TODO Auto-generated method stub
		String from ="[e-mail]";
		String to = "[e-mail]";
		String subject ="test picture ";
//		String body ="<h4>This is a test  of HTML mail</h4><img src=\"http://www.it315.org/images/it315logo.gif\">";
//		String body ="<h4>This is a test  of HTML mail</h4><img src=\"88364.gif\">";
		String body ="<h4>This is a test  of HTML mail</h4><img src=\"cid:88364.gif\">";//为啥加cid 呢？表示引用Mime消息中Content-id属性值为88364.gif的消息体数据
		
		//创建Session 实例对象
		Session session = Session.getDefaultInstance(new Properties()); 
		//创建MimeMessage 实例对象，并设置各种邮件头字段
		MimeMessage msg =new MimeMessage(session);
		//设置发件人
		msg.setFrom(new InternetAddress(from));
		//to 
		msg.setRecipients(Message.RecipientType.TO,InternetAddress.parse(to));
		
//		创建一个子类型为“related“的MimeMultipart 对象
		MimeMultipart multipart = new MimeMultipart("related");
		
		/*创建一个表示HTML正文的MimeBodyPart对象，并
		 * 将它加入到前面创建的MimeMultipart对象中
		 */
		MimeBodyPart htmlBodyPart = new MimeBodyPart();
		htmlBodyPart.setContent(body,"text/html;charset=gb2312");
		multipart.addBodyPart(htmlBodyPart);
		/*创建一个表示图片内容的MimeBodyPart对象，并
		 * 将它加入到前面创建的MimeMultipart对象中
		 */
		MimeBodyPart gifBodyPart =new MimeBodyPart();
//		gifBodyPart.setContent(arg0)
		FileDataSource fds =new FileDataSource("d:\\88364.gif"); //JAF 中的datesouce
		gifBodyPart.setDataHandler(new DataHandler(fds));
		gifBodyPart.setContentID("88364.gif");
		//下面这句也可以替换上句
//		gifBodyPart.setHeader("Content-ID", "88364.GIF");
//		gifBodyPart.setHeader("Content-Type", "image/gif'); //因为已经包含在JAF 中，不用包含此句
		multipart.addBodyPart(gifBodyPart);
		
		//date
		msg.setSentDate(new Date());
		//subject
		msg.setSubject(subject);
		
//		msg.setText(body);
		//设置HTML 格式的邮件正文
//		msg.setContent(body, "text/html;charset=gb2312"); 
		/*
		 * 将MimeMultipart对象设置为整个邮件的内容
		 */
		msg.setContent(multipart);
		//保存最终生成的邮件内容
		msg.saveChanges();
		//把MIMEMessage 对象中的内容写到文件中
		msg.writeTo(new FileOutputStream("d:\\testHTMLPicture.eml"));

	}

}

3 html 方式：

package com.mail.main;

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

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

/**
 * @author xxxx
 * @version 創建時間：Sep 26, 2009 2:22:39 PM
 * 類說明：邮件发送程序实例
 */
public class HtmlMessageSender {
	String protocol ="smtp";
	String from ="[e-mail]";
	String to = "[e-mail]";
	String subject ="test picture welcome sender";
	String body ="<h4>This is a test  of HTML mail</h4><img src=\"../images/it315logo.gif\">";

	/**
	 * @param args
	 * @throws Exception 
	 */
	public static void main(String[] args) throws Exception {
		
		String server = "smtp.sina.com.cn";
		String user = "it315_test"; //[e-mail]
		String pass = "123456";
		HtmlMessageSender sender = new HtmlMessageSender();
		Session session =sender.createSession();
		MimeMessage message = sender.createMessage(session);
		//获取Transport 对象，并连接邮件服务器发送邮件
		Transport transport = session.getTransport();
		transport.connect(server, user, pass);
		transport.sendMessage(message, message.getRecipients(Message.RecipientType.TO));
		transport.close();

	}
	public Session createSession() {
		Properties props =new Properties();
		props.setProperty("mail.transport.protocol", protocol);
		props.setProperty("mail.smtp.auth", "true");
		/*必须将mail.smtp.auth属性设置为true，SMTPTransport对象才会向
		SMTP服务器提交用户认证信息，这个信息可以从JavaMail的javadocs文档
		中的com.sun.mail.smtp包的帮助页面内查看到。
		*/
		Session session =Session.getDefaultInstance(props);
		session.setDebug(true);
		return session;
	}
	
	public MimeMessage createMessage(Session session) throws Exception, MessagingException{
		MimeMessage message = new MimeMessage(session);
		message.setFrom(new InternetAddress(from));
		message.setRecipients(Message.RecipientType.TO,  InternetAddress.parse(to));
		message.setSubject(subject);
		MimeMultipart multipart = new MimeMultipart("related");
		
		MimeBodyPart htmlBodyPart = new MimeBodyPart();
	    htmlBodyPart.setContent(body,"text/html;charset=gb2312");
		multipart.addBodyPart(htmlBodyPart); 
		
		MimeBodyPart gifBodyPart = new MimeBodyPart();
		FileDataSource fds = new FileDataSource("d:\\88364.gif");
		gifBodyPart.setDataHandler(new DataHandler(fds));
		gifBodyPart.setContentID("it315_logo_gif");
		multipart.addBodyPart(gifBodyPart);
		
		message.setContent(multipart);
		message.saveChanges();
		return message;
			
	}
}

4 综合以上：

package com.mail.main;

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

import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;

/**
 * @author xxxx
 * @version 創建時間：Sep 27, 2009 2:12:28 PM
 * 類說明：内嵌图片和附件的mail
 */
public class ComplexMessage {

	/**
	 * @param args
	 * @throws MessagingException 
	 * @throws IOException 
	 * @throws Exception 
	 */
	public static void main(String[] args) throws Exception, IOException, MessagingException {
		Session session = Session.getDefaultInstance(new Properties());
        MimeMessage message = createMessage(session);
        message.writeTo(new FileOutputStream("d:\\ComplexMessage.eml"));

	}
	public static MimeMessage createMessage(Session session) throws Exception
	{
		String from = "[e-mail] ";//发件人地址
        String to = "[e-mail] ";  //收件人地址
        String subject = "HTML邮件";        //邮件主题
        String body = "<a href=http://www.it315.org>" +
        			  "欢迎大家访问我们的网站</a></br>" +
				      "<img src=\"cid:it315_logo_gif\">"; 
      
        MimeMessage message = new MimeMessage(session);            
        message.setFrom(new InternetAddress(from));
        message.setRecipients(Message.RecipientType.TO,
        		InternetAddress.parse(to));
        message.setSubject(subject);
        
        //创建代表邮件正文和附件的各个MimeBodyPart对象
        MimeBodyPart contentPart = createContent(body,"d:\\attach\\logo.gif");
        MimeBodyPart attachPart1 = createAttachment("d:\\attach\\daemon.exe");
        MimeBodyPart attachPart2 = createAttachment("d:\\attach\\sndrec.wav");
        
        //创建用于组合邮件正文和附件的MimeMultipart对象
        MimeMultipart allMultipart = new MimeMultipart("mixed");
        allMultipart.addBodyPart(contentPart);
        allMultipart.addBodyPart(attachPart1);
        allMultipart.addBodyPart(attachPart2);
        
        //设置整个邮件内容为最终组合出的MimeMultipart对象
        message.setContent(allMultipart);
        message.saveChanges();
        return message;
	}
	
	public static MimeBodyPart createContent(String body,String filename) 
														throws Exception
	{
        /* 创建代表组合MIME消息的MimeMultipart对象，
		和将该MimeMultipart对象保存到的MimeBodyPart对象 */
        MimeBodyPart contentPart = new MimeBodyPart();
        MimeMultipart contentMultipart = new MimeMultipart("related");
       
        /* 创建用于保存HTML正文的MimeBodyPart对象，
			并将它保存到MimeMultipart中 */
        MimeBodyPart htmlBodyPart = new MimeBodyPart();          
        htmlBodyPart.setContent(body,"text/html;charset=gb2312");
        contentMultipart.addBodyPart(htmlBodyPart); 
        
        /* 创建用于保存图片的MimeBodyPart对象，
			并将它保存到MimeMultipart中 */
        MimeBodyPart gifBodyPart = new MimeBodyPart();
        FileDataSource fds = new FileDataSource(filename);
        gifBodyPart.setDataHandler(new DataHandler(fds));
        gifBodyPart.setContentID("it315_logo_gif");
        contentMultipart.addBodyPart(gifBodyPart);
        
        //将MimeMultipart对象保存到的MimeBodyPart对象中
        contentPart.setContent(contentMultipart);
		return contentPart;
	}
	
	public static MimeBodyPart createAttachment(String filename) throws Exception
	{
		//创建保存附件的MimeBodyPart对象，并加入附件内容和相应信息
		MimeBodyPart attachPart = new MimeBodyPart();
        FileDataSource fds = new FileDataSource(filename);
        attachPart.setDataHandler(new DataHandler(fds));
        attachPart.setFileName(fds.getName());
		return attachPart;
	}
}