java通过springMail发送邮件

<bean id="mailSender" class="org.springframework.mail.javamail.JavaMailSenderImpl">
        <property name="protocol" value="${mail.protocol}"/>
        <property name="host" value="${mail.host}"/>
        <property name="port" value="${mail.port}" />
        <property name="username" value="${mail.username}"/>
        <property name="password" value="${mail.password}"/>
        <property name="javaMailProperties">
            <props>
                <prop key="mail.smtp.auth">true</prop>
                <prop key="mail.smtp.starttls.enable">true</prop>
            </props>
        </property>
 </bean>

mail.protocol=smtp
mail.from=*@*.com
mail.host=smtp.*.com
mail.port=25
mail.username=
mail.password=

import java.io.Serializable;

import org.springframework.web.multipart.MultipartFile;

public class Email implements Serializable
{

    private static final long    serialVersionUID    = 1L;
    /** 发件人 **/
    private String                sender;
    /** 收件人* */
    private String[]              address;
    /** 抄送给* */
    private String[]              cc;
    /** 暗送给* */
    private String[]              bcc;
    /** 回复给* */
    private String                replyTo;
    /** 邮件主题* */
    private String                subject;/** 邮件内容*/
    private String              content;
    /** 附件* */
    private MultipartFile[]        attachment            = new MultipartFile[0];

    //////////////////////////getters & setters//////////////////////////////  
}

@Resource(name = "mailSender")
private JavaMailSender mailSender;

public  void sendMailBySynchronizationMode(Email email) {
        MimeMessage mime = mailSender.createMimeMessage();
        MimeMessageHelper helper;

        String content = email.getContent();
        
        try {
            helper = new MimeMessageHelper(mime, true, "utf-8");
            helper.setFrom(email.getSender());//发件人
            helper.setTo(email.getAddress());//收件人 
            if (CommonUtils.isNotEmpty(email.getCc())) {
                helper.setCc(email.getCc());// 抄送
            }
            if (CommonUtils.isNotEmpty(email.getBcc())) {
                helper.setBcc(email.getBcc());// 暗送
            }
            if (CommonUtils.isNotEmpty(email.getReplyTo())) {
                helper.setReplyTo(email.getReplyTo());// 回复到
            }
            helper.setSubject(email.getSubject());//邮件主题
            helper.setText(content, true);//true表示设定html格式

            //处理附件
            for (MultipartFile file : email.getAttachment()) {
                if (file == null || file.isEmpty()) {
                    continue;
                }
                String fileName = file.getOriginalFilename();
                try {
                    fileName = new String(fileName.getBytes("utf-8"), "ISO-8859-1");
                } catch (Exception e) {
                }
                helper.addAttachment(fileName, new ByteArrayResource(file.getBytes()));
            }
            mailSender.send(mime);

        } catch (Exception e) {
            e.printStackTrace();
        }
    }