用java代码发送邮件（优化版）

调用代码如下：

if(!StringUtil.isNullOrEmpty(address)){
            SendEmailUtil.sendEmail(globalProperties.getEmailSubject() , noticeMsg.toString() , address , globalProperties.getEmailIsSend(), globalProperties.getEmailAccount()
                    , globalProperties.getEmailPassword() , globalProperties.getEmailFromAddress() , globalProperties.getEmailHost() , globalProperties.getEmailPort());
        }else{
            this.logger.debug("重置密码时，邮件无法发送，原因为：账户邮箱地址为空");
        }

代码如下：

package com.banger.ubip.common.utils;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.Date;
import java.util.Properties;
import java.util.StringTokenizer;
import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;

import javax.mail.Address;
import javax.mail.Authenticator;
import javax.mail.BodyPart;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Multipart;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.*;


/**
 * @Author luozx
 * @Date 2016/12/26 10:20.
 */
public class SendEmailUtil extends Authenticator implements Runnable{
    private static final boolean validate = true;
    private String subject;
    private String account;
    private String password;
    private String fromAddress;
    private String msg;
    private String address;
    private Properties pro = new Properties();
    private static Session sendMailSession = null;
    private String emailIsSend;//邮件是否发送的开关 true为发送邮件

    protected Logger logger = LoggerFactory.getLogger(getClass());

    //邮件发送的线程池
    private static ThreadPoolExecutor executor = new ThreadPoolExecutor(10, 10, 200, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));

    public static void sendEmail(String subject , String msg , String address , String emailIsSend ,
                                 String account, String password, String fromAddress, String host, String port) {
        SendEmailUtil set = new SendEmailUtil(subject , msg , address , emailIsSend ,account, password, fromAddress, host, port);
        executor.execute(set);
    }
    public SendEmailUtil(String subject , String msg , String address , String emailIsSend ,
                     String account, String password, String fromAddress, String host, String port) {
        super();
        this.subject = subject;
        this.account = account;
        this.password = password;
        this.fromAddress = fromAddress;
        this.msg = msg;
        this.address = address;
        this.emailIsSend = emailIsSend;
        pro.put("mail.smtp.host",host);
        pro.put("mail.smtp.port",port);
        pro.put("mail.smtp.auth", validate ? "true" : "false");
    }

    @Override
    public void run() {
        if(!StringUtil.isNullOrEmpty(emailIsSend) && "true".equals(emailIsSend)){
            InternetAddress[] ia = parseAddress(address);
            sendTextMail(ia,subject,msg);
            logger.info("邮件发送完成，接收者为：[{}]",address);
        }
    }

    @Override
    protected PasswordAuthentication getPasswordAuthentication() {
        return new PasswordAuthentication(account, password);
    }

    /**
     * 以文本格式发送邮件
     *
     * @param ToAddress
     * @param Subject
     * @param Content
     *            待发送的邮件的信息
     */
    public boolean sendTextMail(InternetAddress[] ToAddress, String Subject,
                                String Content) {
        // 判断是否需要身份认证
        try {
            // 根据邮件会话属性和密码验证器构造一个发送邮件的session
            // Session sendMailSession = Session.getDefaultInstance(pro, this);
            if (sendMailSession == null) {
                sendMailSession = Session.getDefaultInstance(pro, this);
            }
            // 根据session创建一个邮件消息
            Message mailMessage = new MimeMessage(sendMailSession);
            // 创建邮件发送者地址
            Address from = new InternetAddress(fromAddress);
            // 设置邮件消息的发送者
            mailMessage.setFrom(from);
            // 创建邮件的接收者地址，并设置到邮件消息中
            if (ToAddress.length == 1) {
                mailMessage.setRecipients(Message.RecipientType.TO, ToAddress);
            } else {
                mailMessage.setRecipients(Message.RecipientType.BCC, ToAddress);
            }
            // 设置邮件消息的主题
            mailMessage.setSubject(MimeUtility.encodeText(Subject,MimeUtility.mimeCharset("utf-8"), null));
            // 设置邮件消息发送的时间
            mailMessage.setSentDate(new Date());
            // 设置邮件消息的主要内容
           // mailMessage.setText(Content);
            mailMessage.setContent(Content, "text/html;charset=utf-8");
            // 发送邮件
            Transport.send(mailMessage);
            return true;
        } catch (Exception ex) {
            logger.error("邮件发送异常,[{}]",ex);
        }
        return false;
    }

    /**
     * 以HTML格式发送邮件
     *
     * @param ToAddress
     * @param Subject
     * @param Content
     *            待发送的邮件信息
     */
    public boolean sendHtmlMail(InternetAddress[] ToAddress, String Subject,
                                String Content) {
        try {
            // 根据邮件会话属性和密码验证器构造一个发送邮件的session
            // Session sendMailSession = Session.getDefaultInstance(pro, this);
            if (sendMailSession == null) {
                sendMailSession = Session.getDefaultInstance(pro, this);
            }
            // 根据session创建一个邮件消息
            Message mailMessage = new MimeMessage(sendMailSession);
            // 创建邮件发送者地址
            Address from = new InternetAddress(fromAddress);
            // 设置邮件消息的发送者
            mailMessage.setFrom(from);
            // 创建邮件的接收者地址，并设置到邮件消息中
            // Message.RecipientType.TO属性表示接收者的类型为TO
            if (ToAddress.length == 1) {
                mailMessage.setRecipients(Message.RecipientType.TO, ToAddress);
            } else {
                mailMessage.setRecipients(Message.RecipientType.BCC, ToAddress);
            }
            // 设置邮件消息的主题
            mailMessage.setSubject(Subject);
            // 设置邮件消息发送的时间
            mailMessage.setSentDate(new Date());
            // MiniMultipart类是一个容器类，包含MimeBodyPart类型的对象
            Multipart mainPart = new MimeMultipart();
            // 创建一个包含HTML内容的MimeBodyPart
            BodyPart html = new MimeBodyPart();
            // 设置HTML内容
            html.setContent(Content, "text/html; charset=utf-8");
            mainPart.addBodyPart(html);
            // 将MiniMultipart对象设置为邮件内容
            mailMessage.setContent(mainPart);
            // 发送邮件
            Transport.send(mailMessage);
            return true;
        } catch (MessagingException ex) {
            logger.error("邮件发送异常,[{}]",ex);
        }
        return false;
    }

    public InternetAddress[] parseAddress(String addr) {
        StringTokenizer token = new StringTokenizer(addr, ",");
        InternetAddress[] addrArr = new InternetAddress[token.countTokens()];
        int i = 0;
        while (token.hasMoreTokens()) {
            try {
                addrArr[i] = new InternetAddress(token.nextToken().toString());
            } catch (AddressException e1) {
                return null;
            }
            i++;
        }
        return addrArr;
    }

    public static void main(String[] args) {
        String subject = "系统通知邮件";
        String noticeMsg = "这是一封神奇的邮件";
        String address = "[email protected]";
        String emailIsSend = "true";
        String accountTemp = "[email protected]";
        String passwordTemp = "123456";
        String fromAddressTemp = "[email protected]";
        String hostTemp = "smtp.exmail.qq.com";
        String portTemp = "25";
        SendEmailUtil set = new SendEmailUtil(subject , noticeMsg , address , emailIsSend , accountTemp , passwordTemp , fromAddressTemp , hostTemp,portTemp);
        set.run();
    }

}