spring 邮件处理 完整示例

  项目中email处理总结一下：

1.封装邮件信息类：

 

java 代码

/**
 * Class for sending e-mail messages based on Velocity templates or with
 * attachments.
 *
 * @author wangkai
 */
public class MailEngine {
    private final Log logger = LogFactory.getLog(MailEngine.class);
    private MailSender mailSender;
    private VelocityEngine velocityEngine;

    public void setMailSender(MailSender mailSender) {
        this.mailSender = mailSender;
    }

    public void setVelocityEngine(VelocityEngine velocityEngine) {
        this.velocityEngine = velocityEngine;
    }

    /**
     * Send a simple message based on a Velocity template.
     *
     * @param msg
     *            the message to populate
     * @param templateName
     *            the Velocity template to use (relative to classpath)
     * @param model
     *            a map containing key/value pairs
     */
    public void sendMessage(SimpleMailMessage msg, String templateName,
            Map model) {
        String result = null;
        try {
            MimeMessage message = ((JavaMailSenderImpl) mailSender)
                    .createMimeMessage();

            result = VelocityEngineUtils.mergeTemplateIntoString(
                    velocityEngine, templateName, "UTF-8", model);
        } catch (VelocityException e) {
            e.printStackTrace();
            logger.error(e.getMessage());
        }
        msg.setText(result);
        send(msg);
    }

    /**
     * Send a simple message with pre-populated values.
     *
     * @param msg
     *            the message to send
     */
    public void send(SimpleMailMessage msg) {
        try {

            mailSender.send(msg);
        } catch (MailException ex) {
            // log it and go on
            logger.error(ex.getMessage());
        }
    }

    /**
     * Convenience method for sending messages with attachments.
     *
     * @param recipients
     *            array of e-mail addresses
     * @param sender
     *            e-mail address of sender
     * @param resource
     *            attachment from classpath
     * @param bodyText
     *            text in e-mail
     * @param subject
     *            subject of e-mail
     * @param attachmentName
     *            name for attachment
     * @throws MessagingException
     *             thrown when can't communicate with SMTP server
     * @author Ben Gill
     */
    public void sendMessage(String[] recipients, String sender,
            ClassPathResource resource, String bodyText, String subject,
            String attachmentName) throws MessagingException {
        MimeMessage message = ((JavaMailSenderImpl) mailSender)
                .createMimeMessage();
        // use the true flag to indicate you need a multipart message
        MimeMessageHelper helper = new MimeMessageHelper(message, true, "UTF-8");

        helper.setTo(recipients);
        helper.setFrom(sender);
        helper.setText(bodyText);
        helper.setSubject(subject);

        helper.addAttachment(attachmentName, resource);

        ((JavaMailSenderImpl) mailSender).send(message);
    }

2.spring配置文件，xxxx-mail.xml：

 

 

xml 代码

<!---->
    <!---->
    <!---->
    <bean id="mailEngine"
        class="com.linkmed.cas.service.email.MailEngine">
        <property name="mailSender" ref="mailSender" />
        <property name="velocityEngine" ref="velocityEngine" />
    <!---->bean>

    <bean id="mailSender"
        class="org.springframework.mail.javamail.JavaMailSenderImpl">
        <property name="host" value="${mail.host}" />
        <!---->
         <property name="username" value="${mail.username}"/>
            <property name="password" value="${mail.password}"/>
            <property name="javaMailProperties">
            <value>
            mail.smtp.auth=${mail.validator}
            <!---->value>
            <!---->property>
    <!---->bean>

    <!---->
    <bean id="velocityEngine"
        class="org.springframework.ui.velocity.VelocityEngineFactoryBean">
        <property name="velocityProperties">
            <props>
                <prop key="resource.loader">class<!---->prop>
                <prop key="class.resource.loader.class">
                    org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader
                <!---->prop>
                <prop key="velocimacro.library"><!---->prop>
            <!---->props>
        <!---->property>
    <!---->bean>

    <bean id="mailMessage"
        class="org.springframework.mail.SimpleMailMessage"
        scope="prototype">
        <property name="from" value="${mail.default.from}" />
    <!---->bean>

说明：模板文件放到classpath的velocity目录下，可自行改。

3.发送者邮件信息，mail.properties(classpath位置)：

xml 代码

# This properties file is used to configure mail settings in
# /resources/linkmed-application-service.xml

mail.default.from=dxy.cn <[e-mail]>
mail.debug=false
mail.transport.protocol=smtp
mail.host=smtp.163.com
mail.username=anct125
mail.password=anct125
mail.validator=true

4.模板文件，text.vm(classpath的velocity目录下)：

你好！${me} 这是模板生成的邮件。

5.使用：
 

java 代码

public class MailEngineTest extends BaseTestCase {

    private MailEngine mailEngine;

    private SimpleMailMessage mailMessage;

    public void onSetUp() {
        mailEngine = (MailEngine) ctx.getBean("mailEngine");
        mailMessage = (SimpleMailMessage) ctx.getBean("mailMessage");
    }

    public void testSendMail() {
        assertNotNull(mailEngine);
        assertNotNull(mailMessage);
        mailMessage.setTo("wangkai );
        mailMessage.setFrom("dxy    );
        mailMessage.setSubject("mail.mail.mail.标题有的哈哈！");
        Map
        model.put("user", "wangkai");

        model.put("message", "test");
        mailEngine.sendMessage(mailMessage, "register.vm", model);
    }