Java邮件开发

要用到的jar包：mail.jar，activation.jar（jdk6不需要用此jar包），commons-email.jar。
1、发送时验证

import java.util.Properties;

import javax.mail.Message;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;

public class SimpleMail{
    
    public static void main(String[] args){

        Properties properties=new Properties();
        properties.setProperty("mail.smtp.auth","true");
        properties.setProperty("mail.transport.protocol","smtp");

        Session session=Session.getInstance(properties);
        //设为debug模式可在控制台看到发送邮件的全过程
        session.setDebug(true);
		
        Message message=new MimeMessage(session);
        message.setFrom(new InternetAddress("[email protected]"));
        message.setSubject("simple java mail");
        message.setText("hello,superzhang!this is a simple java mail");
		
        Transport transport=session.getTransport();
        //发送邮件时进行验证
        transport.connect("smtp.sina.com", 25, "superzangcao","super");
        transport.sendMessage(message,InternetAddress.parse("[email protected],[email protected],[email protected]"));	

    }

}

2、连接时验证

import java.util.Properties;

import javax.mail.Authenticator;
import javax.mail.Message;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.Message.RecipientType;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;

public class StaticTransport {

	public static void main(String[] args) throws Exception{
		
	    Properties properties=new Properties();
	    properties.setProperty("mail.smtp.auth", "true");
	    properties.setProperty("mail.transport.protocol", "smtp");
	    properties.setProperty("mail.host", "smtp.sina.com");
             
        //获取session实例时进行验证
	    //Authenticator是抽象类，此处有一个匿名类，该匿名类继承抽象类Authenticator，new的是匿名类,当然，你也可以单独写一个类继承Authenticator，重写它的getPasswordAuthentication()方法
	    Session session=Session.getInstance(properties,new Authenticator(){
		    protected PasswordAuthentication getPasswordAuthentication(){
			    return new PasswordAuthentication("superzangcao","super");
		    }
	    });
	    session.setDebug(true);
		
	    Message message=new MimeMessage(session);
	    message.setFrom(new InternetAddress("[email protected]"));
	    message.setRecipients(RecipientType.TO,InternetAddress.parse("[email protected],[email protected],[email protected],[email protected]"));
	    message.setSubject("static transport");
	    message.setContent("this email is transported by <font color='red'>static</font> transport","text/html;charset=utf-8;");
		
	    Transport.send(message);

    }

}

3、带附件的邮件

import java.util.Properties;

import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.mail.BodyPart;
import javax.mail.Message;
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.internet.MimeUtility;

public class MultipartMail {

	public static void main(String[] args)throws Exception{
		
		Properties properties=new Properties();
		properties.put("mail.smtp.auth", "auth");
		properties.put("mail.transport.protocol", "smtp");
		
		Session session=Session.getInstance(properties);
		session.setDebug(true);
		
		Message message=new MimeMessage(session);
		message.setFrom(new InternetAddress("[email protected]"));
		message.setSubject("multipart mail");
		
		Multipart multipart=new MimeMultipart("mixed");
		message.setContent(multipart,"text/html;charset=utf-8;");
		
		//邮件正文body
		MimeBodyPart body=new MimeBodyPart();
		Multipart bodyMultipart=new MimeMultipart("related");
		BodyPart bodyPart=new MimeBodyPart();
		bodyPart.setDataHandler(new DataHandler(new FileDataSource("D:/mail.bmp")));
		bodyMultipart.addBodyPart(bodyPart);
		body.setContent(bodyMultipart);
		body.setContent("", "text/html;charset=utf-8");
		
		//邮件附件attachment
		MimeBodyPart attachment=new MimeBodyPart();
		attachment.setDataHandler(new DataHandler(new FileDataSource("D:/ax_files.xml")));
		attachment.setFileName(MimeUtility.encodeText("中文")+"xml");
		
		multipart.addBodyPart(body);
		multipart.addBodyPart(attachment);
				
		Transport transport=session.getTransport();
		transport.connect("smtp.sina.com",25, "superzangcao","super");
		transport.sendMessage(message,InternetAddress.parse("[email protected],[email protected]"));

	}

}

4、用commons-email发送简单邮件

import javax.mail.Authenticator;
import javax.mail.PasswordAuthentication;

import org.apache.commons.mail.SimpleEmail;

public class SimpleMail {

	public static void main(String[] args) throws Exception{
		
		SimpleEmail email=new SimpleEmail();
		email.setHostName("smtp.sina.com");
		email.setAuthenticator(new Authenticator(){
			protected PasswordAuthentication getPasswordAuthentication(){
				return new PasswordAuthentication("superzangcao","super");
			}
		});

		email.setDebug(true);
		email.setCharset("UTF-8");
		
		email.setFrom("[email protected]");
		email.addTo("[email protected]");
		email.setSubject("你好！");
		email.setMsg("hello,superzhang!很高兴认识你。");
		email.send();

	}

}

5、用commons-email发送带附件的邮件

import javax.mail.BodyPart;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMultipart;
import javax.mail.internet.MimeUtility;

import org.apache.commons.mail.EmailAttachment;
import org.apache.commons.mail.MultiPartEmail;

public class MultiMail {

	public static void main(String[] args) throws Exception {

		MultiPartEmail email = new MultiPartEmail();
		email.setHostName("smtp.sina.com");
		email.setAuthentication("superzangcao", "super");
		email.setCharset("UTF-8");
		email.setDebug(true);

		email.setFrom("[email protected]");
		email.addTo("[email protected]");
		email.setSubject("带附件的邮件");
		
		MimeMultipart body=new MimeMultipart();
		BodyPart bodyPart=new MimeBodyPart();
		bodyPart.setContent("<font color=red>你好,中文邮件也没问题</font>", "text/html;charset=utf-8");
		body.addBodyPart(bodyPart);
		email.addPart(body);
		
		EmailAttachment attachment = new EmailAttachment();
		attachment.setDisposition(EmailAttachment.ATTACHMENT);
		attachment.setName(MimeUtility.encodeText("附件"));
		attachment.setPath("D:\\Java邮件开发驱动包.rar");
		email.attach(attachment);
		
		email.send();

	}
}