java实现发送邮件功能

        <!--发送邮件-->        <dependency>            <groupId>javax.mail</groupId>            <artifactId>mail</artifactId>            <version>1.4.7</version>        </dependency>

 import org.apache.tomcat.util.descriptor.web.WebXml; import java.util.Date;import java.util.Properties;import javax.mail.Message.RecipientType;import javax.mail.Session;import javax.mail.Transport;import javax.mail.internet.InternetAddress;import javax.mail.internet.MimeMessage; public class MailUtils {    //服务器的地址    public static final String SMTPSERVER = "xxx";    //服务器的端口    public static final String SMTPPORT = "xxx";    //服务器的账号    public static final String ACCOUT = "xxxxx";    //服务器的密码    public static final String PWD = "xxxxxx";    //发件人的账号    public static final String emailform = "xxxxx";     public static void main(String[] args) throws Exception {        String emailto = "xxxxxxxxxx";        String subject = "（出差人英文名）取消出差通知";        String content= "<出差人英文名>原计划（时间含yyyy/mm/dd hh:mm）xx到xx，从(地点)xx到xx进行出差。先提出取消，请知晓！\n" +                "【取消原因】\n" +                "Xxxxx\n" +                "【原出差目的】\n" +                "Xxxxx\n";        MailUtils.sendEmail( emailto, subject, content);    }     public static void sendEmail(String emailto,String subject,String content)  {        try {            // 创建邮件配置            Properties props = new Properties();            props.setProperty("mail.transport.protocol", "smtp"); // 使用的协议（JavaMail规范要求）            props.setProperty("mail.smtp.host", SMTPSERVER); // 发件人的邮箱的 SMTP 服务器地址            props.setProperty("mail.smtp.port", SMTPPORT);            props.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");//        props.setProperty("mail.smtp.auth", "true"); // 需要请求认证//        props.setProperty("mail.smtp.ssl.enable", "true");// 开启ssl              // 根据邮件配置创建会话，注意session别导错包            Session session = Session.getDefaultInstance(props);            // 开启debug模式，可以看到更多详细的输入日志            session.setDebug(true);            //创建邮件            MimeMessage message = createEmail(session, emailto, subject, content);            //获取传输通道            Transport transport = session.getTransport();            transport.connect(SMTPSERVER,ACCOUT, PWD);            //连接，并发送邮件            transport.sendMessage(message, message.getAllRecipients());            transport.close();        }catch (Exception e){            e.printStackTrace();        }       }      private static MimeMessage createEmail(Session session, String emailto,String subject,String content) throws Exception {        // 根据会话创建邮件        MimeMessage msg = new MimeMessage(session);        // address邮件地址, personal邮件昵称, charset编码方式        InternetAddress fromAddress = new InternetAddress(emailform,                "", "utf-8");        // 设置发送邮件方        msg.setFrom(fromAddress);         InternetAddress receiveAddress = new InternetAddress(                emailto, "", "utf-8");        // 设置邮件接收方        msg.setRecipient(RecipientType.TO, receiveAddress);        // 设置邮件标题        msg.setSubject(subject, "utf-8");        msg.setText(content);        // 设置显示的发件时间        msg.setSentDate(new Date());        // 保存设置        msg.saveChanges();        return msg;    }}