学步园

public class SendEmailUtil {

    /**
     * 取得邮件模板
     * 
     * @param path 模板路径
     * @return
     */
    public static String getMailTemplate(final String path) {
        String content = null;
        content = FileUtil.readFile(path);
        return content;
    }

    public static void main(final String[] args) {
        final String mailbody = getMailTemplate("F:/test/123.html");
        final SendEmailUtil themail = new SendEmailUtil("mail.163.com");// 设置发送邮件服务器smtp
        themail.setNeedAuth(true);// 设置smtp是否需要认证
        themail.setSubject("你好");// 设置邮件主题
        themail.setBody(mailbody);// 内容
        themail.setTo("gaozhenyi@100ruyi.com");// 收件人
        themail.setFrom("ruyi100_cx@163.com");// 发件人
//        themail.addFileAffix("E:\\approval.log");// 添加附件
        themail.setNamePass("ruyi100_cx@163.com", "ruyi100");// 设置发送邮件服务器smtp中你的登录名及密码
        themail.sendout();
    }

    private MimeMessage mimeMsg; // MIME邮件对象

    private Multipart   mp;      // Multipart对象,邮件内容,标题,附件等内容均添加到其中后再生成MimeMessage对象

    private String      password;

    private Properties  props;   // 系统属性

    private Session     session; // 邮件会话对象

    private String      username; // smtp认证用户名和密码

    public SendEmailUtil(final String smtp) {
        this.setSmtpHost(smtp);
        this.createMimeMessage();
    }

    public boolean addFileAffix(final String filename) {

        System.out.println("增加邮件附件：" + filename);

        try
        {
            final BodyPart bp = new MimeBodyPart();
            final FileDataSource fileds = new FileDataSource(filename);
            bp.setDataHandler(new DataHandler(fileds));
            bp.setFileName(fileds.getName());

            this.mp.addBodyPart(bp);

            return true;
        }
        catch (final Exception e)
        {
            System.err.println("增加邮件附件：" + filename + "发生错误！" + e);
            return false;
        }
    }

    public boolean createMimeMessage() {
        try
        {
            System.out.println("准备获取邮件会话对象！");
            this.session = Session.getDefaultInstance(this.props, null); // 获得邮件会话对象
            this.session.setDebug(true);
        }
        catch (final Exception e)
        {
            System.err.println("获取邮件会话对象时发生错误！" + e);
            return false;
        }

        System.out.println("准备创建MIME邮件对象！");
        try
        {
            this.mimeMsg = new MimeMessage(this.session); // 创建MIME邮件对象
            this.mp = new MimeMultipart();

            return true;
        }
        catch (final Exception e)
        {
            System.err.println("创建MIME邮件对象失败！" + e);
            return false;
        }
    }

    public boolean sendout() {
        try
        {
            this.mimeMsg.setContent(this.mp);
            this.mimeMsg.saveChanges();
            System.out.println("正在发送邮件....");

            final Session mailSession = Session.getInstance(this.props, null);
            final Transport transport = mailSession.getTransport("smtp");
            transport.connect((String) this.props.get("mail.smtp.host"), 25, this.username, this.password);
            System.out.println("发送邮件的smtp服务器为:" + (String) this.props.get("mail.smtp.host"));
            transport.sendMessage(this.mimeMsg, this.mimeMsg.getRecipients(Message.RecipientType.TO));
            // transport.send(mimeMsg);

            System.out.println("发送邮件成功！");
            transport.close();

            return true;
        }
        catch (final Exception e)
        {
            System.err.println("邮件发送失败！" + e);
            return false;
        }
    }

    public boolean setBody(final String mailBody) {
        try
        {
            final BodyPart bp = new MimeBodyPart();
            bp.setContent("<meta http-equiv=Content-Type content=text/html; charset=utf-8>" + mailBody, "text/html;charset=utf-8");
            this.mp.addBodyPart(bp);

            return true;
        }
        catch (final Exception e)
        {
            System.err.println("设置邮件正文时发生错误！" + e);
            return false;
        }
    }

    public boolean setCopyTo(final String copyto) {
        if (copyto == null)
        {
            return false;
        }
        try
        {
            this.mimeMsg.setRecipients(Message.RecipientType.CC, InternetAddress.parse(copyto));
            return true;
        }
        catch (final Exception e)
        {
            return false;
        }
    }

    public boolean setFrom(final String from) {
        System.out.println("设置发信人！");
        try
        {
            this.mimeMsg.setFrom(new InternetAddress(from)); // 设置发信人
            return true;
        }
        catch (final Exception e)
        {
            return false;
        }
    }

    public void setNamePass(final String name, final String pass) {
        this.username = name;
        this.password = pass;
    }

    public void setNeedAuth(final boolean need) {
        System.out.println("设置smtp身份认证：mail.smtp.auth = " + need);
        if (this.props == null)
        {
            this.props = System.getProperties();
        }
        if (need)
        {
            this.props.put("mail.smtp.auth", "true");
        }
        else
        {
            this.props.put("mail.smtp.auth", "false");
        }
    }

    public void setSmtpHost(final String hostName) {
        System.out.println("设置系统属性：mail.smtp.host = " + hostName);
        if (this.props == null)
        {
            this.props = System.getProperties(); // 获得系统属性对象
        }
        this.props.put("mail.smtp.host", hostName); // 设置SMTP主机
    }

    public boolean setSubject(final String mailSubject) {
        System.out.println("设置邮件主题！");
        try
        {
            this.mimeMsg.setSubject(mailSubject);
            return true;
        }
        catch (final Exception e)
        {
            System.err.println("设置邮件主题发生错误！");
            return false;
        }
    }

    public boolean setTo(final String to) {
        if (to == null)
        {
            return false;
        }

        try
        {
            this.mimeMsg.setRecipients(Message.RecipientType.TO, InternetAddress.parse(to));
            return true;
        }
        catch (final Exception e)
        {
            return false;
        }

    }

}