Java Mail using Playframework

Leaves.java

package controllers.oa;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import models.oa.Leave;
import models.oa.Vacation;
import models.system.User;
import play.Logger;
import play.data.validation.Valid;
import utils.DateUtils;
import utils.JSONUtils;
import utils.MailUtils;
import utils.Message;
import controllers.Application;

/**
 * TODO 需要统一认证
 */
public class Leaves extends Application {

    public static void testEmail() {
        List<String> tos = new ArrayList<String>();
        tos.add("aaaaaa@google.com");
        tos.add("bbbbbb@google.com");
        tos.add("cccccc@google.com");
        MailUtils.send("cccccc@google.com", "测试邮件标题", tos, "Hello, This is a testing email!");
    }
}

MailUtils.java

package utils;

import java.util.ArrayList;
import java.util.List;

import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;

import org.apache.commons.mail.Email;
import org.apache.commons.mail.EmailException;
import org.apache.commons.mail.SimpleEmail;

import play.libs.Mail;

public class MailUtils {

    /**
     * @param from
     * @param tos
     * @param content
     */
    public static void send(String from, String subject, List<String> tos, String content) {
        Email email = new SimpleEmail();

        List<InternetAddress> toAddress = new ArrayList<InternetAddress>();
        for (String to : tos) {
            try {
                InternetAddress address = new InternetAddress(to);
                toAddress.add(address);
            } catch (AddressException e) {
                e.printStackTrace();
            }
        }
        try {
            email.setTo(toAddress);
            email.setFrom(from);
            email.setSubject(subject);
        } catch (EmailException e) {
            e.printStackTrace();
        }
        // Async send
        Mail.send(email);
    }

}