发送邮件类

mail.properties文件

#163
mail.default.from=11@163.com
mail.smtp.host=smtp.163.com
mail.sender.username=11@163.com
mail.sender.password=110ac14c82357


mail.port=25
mail.smtp.auth=true
mail.debug=true
mail.transport.protocol=smtp
mail.sender.nick_name=\u82F1\u5927\u957F\u5B89

mail.image.basePath =http\://172.168.1.1\:80/res/uploads

发送邮件类

package com.caej.insurance.backoffice.common.utils;

import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;

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

import org.apache.commons.lang.StringUtils;
import org.apache.log4j.Logger;



/**
 * java发送邮件和附件
 * @author tongyh
 *
 */
public class JavaMailUtilsByUTF {

    protected final Logger log = Logger.getLogger(this.getClass());

    /**
     * Message对象将存储我们实际发送的电子邮件信息，
     * Message对象被作为一个MimeMessage对象来创建并且需要知道应当选择哪一个JavaMail session。
     */
    private  MimeMessage message;

    /**
     * Session类代表JavaMail中的一个邮件会话。
     * 每一个基于JavaMail的应用程序至少有一个Session（可以有任意多的Session）。
     * 
     * JavaMail需要Properties来创建一个session对象。
     * 寻找"mail.smtp.host"    属性值就是发送邮件的主机
     * 寻找"mail.smtp.auth"    身份验证，目前免费邮件服务器都需要这一项
     */
    private  Session session;

    /***
     * 邮件是既可以被发送也可以被受到。JavaMail使用了两个不同的类来完成这两个功能：Transport 和 Store。 
     * Transport 是用来发送信息的，而Store用来收信。对于这的教程我们只需要用到Transport对象。
     */
    private  Transport transport;

    private  String mailHost="";
    private  String sender_username="";
    private  String sender_password="";
    private  String nick_name = "";


    /*
     * 初始化方法
     */
    public JavaMailUtilsByUTF(boolean debug) {
         Properties properties = new Properties();
         DesUtils du=new DesUtils();
        InputStream in = JavaMailUtilsByUTF.class.getResourceAsStream("/config/mail.properties");
        try {
            properties.load(in);
            this.mailHost = properties.getProperty("mail.smtp.host");
            this.sender_username = properties.getProperty("mail.sender.username");
            String pass=properties.getProperty("mail.sender.password");
            this.sender_password =(null!=pass)?du.decrypt(pass):"123456";//设置默认密码
            this.nick_name = properties.getProperty("mail.sender.nick_name");
        } catch (IOException e) {
            e.printStackTrace();
        }

        session = Session.getInstance(properties);
        session.setDebug(debug);//开启后有调试信息
        message = new MimeMessage(session);
    }

    /**
     * 发送邮件
     * 
     * @param subject 邮件主题
     * @param sendHtml 邮件内容
     * @param receiveUser 收件人地址
     */
    public   boolean doSendHtmlEmail(String subject, String sendHtml,String receiveUser) {
        try {
            // 下面这个是设置发送人的Nick name
            InternetAddress from = new InternetAddress("<"+sender_username+">");
            message.setFrom(from);
            // 收件人
            InternetAddress to = new InternetAddress(receiveUser);
            message.setRecipient(Message.RecipientType.TO, to);//还可以有CC、BCC

            // 邮件主题
            message.setSubject(subject);

            String content = sendHtml.toString();
            // 邮件内容,也可以使纯文本"text/plain"
            message.setContent(content, "text/html;charset=UTF-8");

            // 保存邮件
            message.saveChanges();

            transport = session.getTransport("smtp");
            // smtp验证，就是你用来发邮件的邮箱用户名密码
            transport.connect(mailHost, sender_username, sender_password);
            // 发送
            transport.sendMessage(message, message.getAllRecipients());
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }finally {
            if(transport!=null){
                try {
                    transport.close();
                    return true;
                } catch (MessagingException e) {
                    e.printStackTrace();
                }
            }
        }

    }


    /**
     * 发送邮件-附件
     * 
     * @param subject 邮件主题
     * @param sendHtml 邮件内容
     * @param receiveUser 收件人地址
     * @param attachment 附件
     */
    public  boolean doSendHtmlAttachEmail(String subject, String sendHtml,String receiveUser, File attachment) {
        try {
            // 发件人
            InternetAddress from = new InternetAddress((new String(nick_name.getBytes(),"UTF-8"))+" <"+sender_username+">");
            message.setFrom(from);

            // 收件人
            InternetAddress to = new InternetAddress(receiveUser);
            message.setRecipient(Message.RecipientType.TO, to);

            // 邮件主题
            message.setSubject(subject);

            // 向multipart对象中添加邮件的各个部分内容，包括文本内容和附件
            Multipart multipart = new MimeMultipart();

            // 添加邮件正文
            BodyPart contentPart = new MimeBodyPart();
            contentPart.setContent(sendHtml, "text/html;charset=UTF-8");

            multipart.addBodyPart(contentPart);

            // 添加附件的内容
            if (attachment != null) {
                BodyPart attachmentBodyPart = new MimeBodyPart();
                DataSource source = new FileDataSource(attachment);
                attachmentBodyPart.setDataHandler(new DataHandler(source));

                //MimeUtility.encodeWord可以避免文件名乱码
                attachmentBodyPart.setFileName(MimeUtility.encodeWord(attachment.getName()));

                multipart.addBodyPart(attachmentBodyPart);
                //多个附件构造BodyPart即可
/*                BodyPart attachmentBodyPart2 = new MimeBodyPart();
                DataSource source2 = new FileDataSource(image_2);
                attachmentBodyPart2.setDataHandler(new DataHandler(source2));
                attachmentBodyPart2.setFileName(MimeUtility.encodeWord(image_2.getName()));
                multipart.addBodyPart(attachmentBodyPart2);
                BodyPart attachmentBodyPart3 = new MimeBodyPart();
                DataSource source3 = new FileDataSource(image_3);
                attachmentBodyPart3.setDataHandler(new DataHandler(source3));
                attachmentBodyPart3.setFileName(MimeUtility.encodeWord(image_3.getName()));
                multipart.addBodyPart(attachmentBodyPart3);*/
            }

            // 将multipart对象放到message中
            message.setContent(multipart);
            // 保存邮件
            message.saveChanges();

            transport = session.getTransport("smtp");
            // smtp验证，就是你用来发邮件的邮箱用户名密码
            transport.connect(mailHost, sender_username, sender_password);
            // 发送
            transport.sendMessage(message, message.getAllRecipients());
            log.info("send success!");
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        } finally {
            if (transport != null) {
                try {
                    transport.close();
                    return true;
                } catch (MessagingException e) {
                    e.printStackTrace();
                }
            }
        }
    }

}

用法：