springmvc 實現javamail

1.spring配置

<!--郵件發送實現類-->
    <bean id="javaMailSender" class="org.springframework.mail.javamail.JavaMailSenderImpl">
        <property name="host" value="smtp.163.com"/>
        <property name="port" value="25"/>
        <property name="username" value="test@163.com"/>
        <property name="password" value="test"/>
        <property name="javaMailProperties">
            <props >
                <prop key="mail.smtp.auth">true</prop>
            </props>
        </property>
    </bean>
    <bean id="simpleMailMessage" class="org.springframework.mail.SimpleMailMessage">
        <property name="from" value="test@163.com" /><!--發送人-->
        <property name="subject" value="System" /><!--主題-->
    </bean>
 	<!--線程池異步發送郵件-->
    <bean id="taskExecutor" class="org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor">
        <property name="corePoolSize" value="5" />
        <property name="maxPoolSize" value="10" />
        <property name="queueCapacity" value="25" />
    </bean>

2.java工具類

@Component("mailSenderUtil")
public class MailSenderUtil {
    @Resource
    private JavaMailSender javaMailSender;
    @Resource
    private SimpleMailMessage simpleMailMessage;
    @Resource
    private TaskExecutor taskExecutor;
    
    /**
     * 構建郵件內容，發送郵件。
     * @param email 收件人郵箱
     * @param content 收件內容
     */
    public void send(String email,String content) {
        this.taskExecutor.execute(new SendMailThread(email,null,content));
    }
    
    //內部線程類，利用線程池異步發郵件。
    private class SendMailThread implements Runnable {
        private String to;
        private String subject;
        private String content;
        private SendMailThread(String to, String subject, String content) {
            super();
            this.to = to;
            this.subject = subject;
            this.content = content;
        }
        @Override
        public void run() {
            sendMail(to, subject, content);
        }
    }
    
    /**
     * 發送郵件
     * @param to        收件人郵箱
     * @param subject   郵件主題
     * @param content   郵件內容
     */
    public void sendMail(String to, String subject, String content) {
        try {
            MimeMessage message = javaMailSender.createMimeMessage();
            MimeMessageHelper messageHelper = new MimeMessageHelper(message, true, "UTF-8");
            messageHelper.setFrom(simpleMailMessage.getFrom());
            if (subject != null) {
                messageHelper.setSubject(subject);
            } else {
                messageHelper.setSubject(simpleMailMessage.getSubject());
            }
            messageHelper.setTo(to);
            messageHelper.setText(content, true);
           javaMailSender.send(message);
        } catch (MessagingException  e) {
            e.printStackTrace();
        }
    }
}

3.方法調用

@resource
private MailSenderUtil mailSenderUtil;
...
mailSenderUtil.send("test@qq.com", "HelloWorld");