使用spring框架的broadleaf mail sender类

这在java中意味着什么…我看到了一些新的东西，我以前从未见过这样的东西…这段代码使用spring框架javamailsender类发送邮件

 public MimeMessagePreparator buildMimeMessagePreparator(final HashMap<String,Object> props) {
     MimeMessagePreparator preparator = new MimeMessagePreparator() {
         public void prepare(MimeMessage mimeMessage) throws Exception {
             EmailTarget emailUser = (EmailTarget) props.get(EmailPropertyType.USER.getType());
             EmailInfo info = (EmailInfo) props.get(EmailPropertyType.INFO.getType());
             MimeMessageHelper message = new MimeMessageHelper(mimeMessage, (info.getAttachments() != null && info.getAttachments().size() > 0));
             message.setTo(emailUser.getEmailAddress());
             message.setFrom(info.getFromAddress());
             message.setSubject(info.getSubject());
             if (emailUser.getBCCAddresses() != null && emailUser.getBCCAddresses().length > 0) {
                 message.setBcc(emailUser.getBCCAddresses());
             }
             if (emailUser.getCCAddresses() != null && emailUser.getCCAddresses().length > 0) {
                 message.setCc(emailUser.getCCAddresses());
             }
             String messageBody = info.getMessageBody();
             if (messageBody == null) {                  
                 messageBody = buildMessageBody(info, props);
             }
             message.setText(messageBody, true);
             for (Attachment attachment : info.getAttachments()) {
                 ByteArrayDataSource dataSource = new ByteArrayDataSource(attachment.getData(), attachment.getMimeType());
                 message.addAttachment(attachment.getFilename(), dataSource);
             }
         }
     };  // why there is a semicolon here
     return preparator;

}

public MimeMessagePreparator buildMimeMessagePreparator（最终HashMap道具）{
MimeMessagePreparator preparator=新的MimeMessagePreparator（）{
public void prepare（MimeMessage MimeMessage）引发异常{
EmailTarget emailUser=（EmailTarget）props.get（EmailPropertyType.USER.getType（））；
EmailInfo=（EmailInfo）props.get（EmailPropertyType.info.getType（））；
MimeMessageHelper message=新的MimeMessageHelper（mimeMessage，（info.getAttachments（）！=null&&info.getAttachments（）.size（）>0））；
message.setTo（emailUser.getEmailAddress（））；
message.setFrom（info.getFromAddress（））；
message.setSubject（info.getSubject（））；
if（emailUser.getbccadrides（）！=null&&emailUser.getbccadrides（）.length>0）{
message.setBcc（emailUser.getbccadrides（））；
}
if（emailUser.getccaddress（）！=null&&emailUser.getccaddress（）.length>0）{
message.setCc（emailUser.getccaddress（））；
}
字符串messageBody=info.getMessageBody（）；
如果（messageBody==null）{
messageBody=buildMessageBody（信息、道具）；
}
message.setText（messageBody，true）；
对于（附件：info.getAttachments（））{
ByteArrayDataSource dataSource=新的ByteArrayDataSource（attachment.getData（），attachment.getMimeType（））；
message.addAttachment（attachment.getFilename（），数据源）；
}
}
}；//为什么这里有分号
报税表编制人；
}

如果您对分号感到困惑，代码将创建一个匿名内部类，它是MimeMessagePreparator的子类。分号是preparator变量赋值的结尾