<bean id="mailSender" class="com.midea.ftms.util.MailSender">

        <property name="host" value="${mail.smtp.host}"></property>

        <property name="auth" value="${mail.smtp.auth}"></property>

        <property name="user" value="${mail.user}"></property>

        <property name="password" value="${mail.passwd}"></property>

        <property name="from" value="${mail.from}"></property>

        <property name="remindNum" value="${mail.remindnum}"></property>

        <property name="debugModel" value="${mail.debug}"></property>

    </bean>

import java.util.Properties;

import javax.mail.Message;

import javax.mail.Session;

import javax.mail.Transport;

import javax.mail.internet.InternetAddress;

import javax.mail.internet.MimeMessage;

public class MailSender {

    private String host;

    private String auth;

    private String user;

    private String password;

    private String from;

    private Integer remindNum;

    private Boolean debugModel;

    public MailSender() {

    }

    /**

     * @see 发送邮件基础方法，请遵循使用规则 MailUtil.sendMail

     * @param to 邮件接收地址

     * @param subject 邮件主题

     * @param content 邮件内容

     * @throws Exception 调用者处理异常

     */

    public void send(String[] to, String subject, String content)

            throws Exception {

        Properties props = new Properties();

        // 指定SMTP服务器

        props.put("mail.smtp.host", host);

        // 指定是否需要SMTP验证

        props.put("mail.smtp.auth", auth);

        Session mailSession = Session.getDefaultInstance(props);

        // 是否在控制台显示debug信息

        mailSession.setDebug(debugModel);

        Message message = new MimeMessage(mailSession);

        // 发件人

        message.setFrom(new InternetAddress(from));

        // 收件人

        InternetAddress[] addresses = new InternetAddress[to.length];

        for (int i = ; i < to.length; i++) {

            addresses[i] = new InternetAddress(to[i]);

        }

        message.setRecipients(Message.RecipientType.TO, addresses);

        // 邮件主题

        message.setSubject("subject:"+subject);

        // 邮件内容(HTML格式)

        message.setContent(content, "text/html;charset=GBK");

        // 保存设置，让设置生效

        message.saveChanges();

        // 发送

        Transport transport = mailSession.getTransport("smtp");

        transport.connect(host, user, password);

        transport.sendMessage(message, message.getAllRecipients());

        transport.close();

    }

    public String getHost() {

        return host;

    }

    public void setHost(String host) {

        this.host = host;

    }

    public String getAuth() {

        return auth;

    }

    public void setAuth(String auth) {

        this.auth = auth;

    }

    public String getUser() {

        return user;

    }

    public void setUser(String user) {

        this.user = user;

    }

    public String getPassword() {

        return password;

    }

    public void setPassword(String password) {

        this.password = password;

    }

    public String getFrom() {

        return from;

    }

    public void setFrom(String from) {

        this.from = from;

    }

    public Integer getRemindNum() {

        return remindNum;

    }

    public void setRemindNum(Integer remindNum) {

        this.remindNum = remindNum;

    }

    public Boolean getDebugModel() {

        return debugModel;

    }

    public void setDebugModel(Boolean debugModel) {

        this.debugModel = debugModel;

    }

}

public class MailUtil {

    private static volatile MailSender mailSender;

    private MailUtil() {

    }

    public static MailSender init() {

        if (mailSender == null) {

            synchronized (MailSender.class) {

                if (mailSender == null) {

//                    mailSender = new MailSender();

                    mailSender = (MailSender)ContextUtil.getContext().getBean("mailSender");

                }

            }

        }

        return mailSender;

    }

    public static void sendMail(String[] to, String subject, String content)

            throws Exception {

        MailUtil.init().send(to, subject, content);

    }

    public static void main(String[] args) {

        MailUtil.init().setAuth("true");

        MailUtil.init().setDebugModel(true);

        MailUtil.init().setFrom("a@b.com");

        MailUtil.init().setHost("cd.com.cn");

        MailUtil.init().setUser("user");

        MailUtil.init().setPassword("passwd");

        MailUtil.init().setRemindNum();

        try {

            MailUtil.sendMail(new String[]{"asdfa@qq.com","134324323@qq.com"}, "测试", "hello yoyo");

        } catch (Exception e) {

            e.printStackTrace();

        }

    }

}

import java.util.Properties;

import javax.mail.Message;

import javax.mail.Session;

import javax.mail.Transport;

import javax.mail.internet.InternetAddress;

import javax.mail.internet.MimeMessage;

public class MailSendUtil {

    private String host;

    private String auth;

    private String user;

    private String password;

    private String from;

    private Integer remindNum;

    private Boolean debugModel;

    private volatile static MailSendUtil mailSendUtil;

    private MailSendUtil(){

        init();

    }

    private void init() {

        host = PropertiesUtil.getProperty("mail.smtp.host");

        auth = PropertiesUtil.getProperty("mail.smtp.auth");

        user = PropertiesUtil.getProperty("mail.user");

        password = PropertiesUtil.getProperty("mail.passwd");

        from = PropertiesUtil.getProperty("mail.from");

        remindNum = Integer.parseInt(PropertiesUtil.getProperty("mail.remindnum"));

        debugModel = Boolean.valueOf(PropertiesUtil.getProperty("mail.debug"));

    }

    public static MailSendUtil getInstance() {

        if (mailSendUtil == null) {

            synchronized (MailSendUtil.class) {

                if (mailSendUtil == null) {

                    return new MailSendUtil();

                }

            }

        }

        return mailSendUtil;

    }

    public static void sendMail(String[] to, String subject, String content)

            throws Exception {

        MailSendUtil.getInstance().send(to, subject, content);

    }

    /**

     * @see 发送邮件基础方法，请遵循使用规则 MailUtil.sendMail

     * @param to 邮件接收地址

     * @param subject 邮件主题

     * @param content 邮件内容

     * @throws Exception 调用者处理异常

     */

    public void send(String[] to, String subject, String content)

            throws Exception {

        Properties props = new Properties();

        // 指定SMTP服务器

        props.put("mail.smtp.host", host);

        // 指定是否需要SMTP验证

        props.put("mail.smtp.auth", auth);

        Session mailSession = Session.getDefaultInstance(props);

        // 是否在控制台显示debug信息

        mailSession.setDebug(debugModel);

        Message message = new MimeMessage(mailSession);

        // 发件人

        message.setFrom(new InternetAddress(from));

        // 收件人

        InternetAddress[] addresses = new InternetAddress[to.length];

        for (int i = ; i < to.length; i++) {

            addresses[i] = new InternetAddress(to[i]);

        }

        message.setRecipients(Message.RecipientType.TO, addresses);

        // 邮件主题

        message.setSubject("subject:"+subject);

        // 邮件内容(HTML格式)

        message.setContent(content, "text/html;charset=GBK");

        // 保存设置，让设置生效

        message.saveChanges();

        // 发送

        Transport transport = mailSession.getTransport("smtp");

        transport.connect(host, user, password);

        transport.sendMessage(message, message.getAllRecipients());

        transport.close();

    }

}