用Java mail 在不同邮箱间发邮件

package top.imooc.mail;

import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.Properties;
import javax.mail.Authenticator;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.NoSuchProviderException;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;

import top.imooc.message.AttachmentMessage;
import top.imooc.message.HtmlMessage;

public class MailClientSend {

	private Session session;
	private Transport transport;
	private String username="[email protected]";
	private String password="xiojdebh";这个密码不是QQ密码或者邮箱密码，要验证的。自己百度
	private String smtpServer="smtp.qq.com";
	
	public void init() throws NoSuchProviderException {
		
		//设置属性
		Properties props=new Properties();
		props.put("mail.transport.protocol", "smtp");
		props.put("mail.smtp.class", "com.sun.mail.stmp,SMTPtransport");
		props.setProperty("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
		props.put("mail.smtp.host", smtpServer);
		final String smtpPort = "465";
		props.put("mail.smtp.port", smtpPort);
		props.put("mail.smtp.auth", "true");//SMTP服务器需要核实身份
		
		//创建session对象
		session=Session.getDefaultInstance(props,new Authenticator() {
			
			public PasswordAuthentication getPasswordAuthentication() {
				
				return new PasswordAuthentication(username, password);	
			}
		});
		
		session.setDebug(true); //输出跟踪日志
		
		//创建transport对象
		transport=session.getTransport();
	}
	
	
	public void sendMessage() throws MessagingException, FileNotFoundException, IOException {
		
		//Message msg=TextMessage.generate();
		//打印Html邮件
		//Message msg=HtmlMessage.generate();
		Message msg=AttachmentMessage.generate();
		transport.connect();
		transport.sendMessage(msg, msg.getAllRecipients());
		System.out.println("打印邮件成功发送");
	}
	
	public void close() throws MessagingException {
		transport.close();
	}
	
	public static void main(String[] args) throws Exception {
		
		MailClientSend send=new MailClientSend();
		send.init();
		send.sendMessage();
		send.close();
	}
	
}

package top.imooc.message;

import java.io.FileNotFoundException;
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.AddressException;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;

public class AttachmentMessage {

	public static MimeMessage generate() throws AddressException, MessagingException, FileNotFoundException, IOException {
		
		String from="[email protected]";//发件人邮箱地址
		String to="[email protected]";	//收件人邮箱地址
		String subject="多附件邮件";
		String body=""
				+"
欢迎大家访问我们家的网站

";
		
		//创建Session实例对象
		Session session=Session.getInstance(new Properties());
		//MimeMessage对象
		MimeMessage message=new MimeMessage(session);
		message.setFrom(new InternetAddress(from));
		message.setRecipients(Message.RecipientType.TO, InternetAddress.parse(to));
		message.setSubject(subject);
		message.setContent(body, "text/html;charset=gb2312");
		
		//创建各个代表邮件附件的正文和附件MimeBodyPart对象
		MimeBodyPart contentPart=createContent(body);
		MimeBodyPart attachPart1=createAttachment("E:\\SSMProject\\20190423151417.jpg");
		MimeBodyPart attachPart2=createAttachment("E:\\SSMProject\\redis.ppt");
		
		//创建用于组合邮件正文和附件的MimeMu
		MimeMultipart allMultipart=new MimeMultipart("mixed");
		allMultipart.addBodyPart(contentPart);
		allMultipart.addBodyPart(attachPart1);
		allMultipart.addBodyPart(attachPart2);
		
		//设置整个邮件最终组合为allMultipart
		message.setContent(allMultipart);
		message.writeTo(new FileOutputStream("E:\\SSMProject\\attachment.docx"));
		message.saveChanges();
		return message;
		
	}
	
	public static MimeBodyPart createContent(String body) throws MessagingException {
		
		MimeBodyPart htmlBodyPart=new MimeBodyPart();
		htmlBodyPart.setContent(body, "text/html;charset=gb2312");
		return htmlBodyPart;	
	}
	
	public static MimeBodyPart createAttachment(String filename) throws MessagingException {
		
		//创建并保存福建的MimeBodyPart对象，并加入附件内容和相应的信息
		MimeBodyPart attachPart=new MimeBodyPart();
		FileDataSource fds=new FileDataSource(filename);
		attachPart.setDataHandler(new DataHandler(fds));
		attachPart.setFileName(fds.getName());
		return attachPart;
	}
}

package top.imooc.message;

import java.util.Date;
import java.util.Properties;

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

public class HtmlMessage {

	public static MimeMessage generate() throws AddressException, MessagingException {
		
		String from="[email protected]";//发件人邮箱地址
		String to="[email protected]";	//收件人邮箱地址
		String subject="Html邮件";
		String body=""
				+"
欢迎大家访问我们家的网站

";
		//创建Session实例对象
		Session session=Session.getInstance(new Properties());
		//创建MimeMessage对象
		MimeMessage message=new MimeMessage(session);
		//设置发件人
		message.setFrom(new InternetAddress(from)); 
		//设置收件人
		message.setRecipients(Message.RecipientType.TO, InternetAddress.parse(to));
		//设置主题
		message.setSubject(subject);
		//设置发送日期
		message.setSentDate(new Date());
		//设置邮件正文内容
		message.setContent(body, "text/html;charset=gb2312");
		message.saveChanges();
		return message;
		
	}
	
}

package top.imooc.message;

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;

public class TextMessage {

	public static MimeMessage generate() throws AddressException, MessagingException, FileNotFoundException, IOException {
		
		String from="[email protected]";//发件人邮箱地址
		String to="[email protected]";	//收件人邮箱地址
		
		String subject="TextMessage";//邮件主题
		String body="您好这是一封测试邮件";
		
		//创建session对象
		Session session=Session.getInstance(new Properties());
		//创建MimeMessage
		MimeMessage message=new MimeMessage(session);
		//设置发信人
		message.setFrom(new InternetAddress(from));
		//设置收信人
		message.setRecipient(Message.RecipientType.TO, new InternetAddress(to));
		
		//设置发送日期
		message.setSentDate(new Date());
		//设置邮件主题
		message.setSubject(subject);
		//设置邮件正文
		message.setText(body);
		//保存信息并生成邮件
		message.saveChanges();
		
		//可以把邮件也到本地文件中
		message.writeTo(new FileOutputStream("E:\\SSMProject\\message.docx"));
		return message;
	}
}