java免费发送邮件实现

现在项目上线一段时间了，希望能够在项目中出现异常后邮件通知给相关开发人员。我从网上找了大量的第三方接口（需要花钱）和发送邮件demo。最后选择了一个只需要引入一个jar包和一个工具类的实现，不需要配置文件，具体的工具类代码如下：

package com.evan.mail;
import java.util.Date;
import java.util.Properties;

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

public class SendMail {

    public static void main(String[] args) {

        MessageVo mv = new MessageVo();

        mv.setSubject("很遗憾，您的程序出bug了"+new Date());

        mv.setText("bug的具体内容为："+"空指针异常");

        mv.setToMailAddress("[email protected]");

        sendMail(mv);
    }


    public static void sendMail(MessageVo mv ){

        final String username = "[email protected]";
        final String password = "evan0202";
        boolean isSSL = true;
        String host = "smtp.163.com";
        int port = 465;
        boolean isAuth = true;


        String from = "[email protected]";


        Properties props = new Properties();
        props.put("mail.smtp.ssl.enable", isSSL);
        props.put("mail.smtp.host", host);
        props.put("mail.smtp.port", port);
        props.put("mail.smtp.auth", isAuth);

        Session session = Session.getDefaultInstance(props, new Authenticator() {
            @Override
            protected PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication(username, password);
            }
        });

        try {
            Message message = new MimeMessage(session);

            message.setFrom(new InternetAddress(from));
            message.setSubject(mv.getSubject());
            message.setText(mv.getText());
            message.addRecipient(Message.RecipientType.TO, new InternetAddress(mv.getToMailAddress()));


            Transport.send(message);
        } catch (AddressException e) {
            e.printStackTrace();
        } catch (MessagingException e) {
            e.printStackTrace();
        }

        System.out.println("发送完毕！");
    }
}

需要注意的是：
1、发件人邮箱没有开通pop3/SMTP协议需要开通
2、发件人163邮件发送次数多了，163会提示说账号有安全威胁之类，需要你在163邮箱设置授权
3、项目中需要用到的jar是mail-1.4.5.jar

直接将项目导入eclipse，运行main方法即可完成发送邮件
完整项目下载地址（免积分）:http://download.csdn.net/download/zl544434558/9393226