fix:邮件正文没有附件，不会执行到下载附件的方法

mo-daq/src/main/java/com/smppw/modaq/domain/service/EmailParseService.java

@@ -698,7 +698,9 @@ public class EmailParseService {
             emailContentInfoDTO.setEmailDate(DateUtil.format(sendDate, DateConst.YYYY_MM_DD_HH_MM_SS));
             emailContentInfoDTOList.add(emailContentInfoDTO);
         } else {
-            log.info("邮件{} 没有附件(fileName={},disposition={})，下载不了附件内容！", subject, fileName, disposition);
+            if (log.isInfoEnabled()) {
+                log.info("邮件{} 没有附件(fileName={},disposition={})，下载不了附件内容！", subject, fileName, disposition);
+            }
         }
     }
 
@@ -706,7 +708,14 @@ public class EmailParseService {
                              List<EmailContentInfoDTO> emailContentInfoDTOList) throws Exception {
         for (int i = 0; i < multipart.getCount(); i++) {
             Part bodyPart = multipart.getBodyPart(i);
-            if (bodyPart.getContent() instanceof Multipart mp) {
+            Object content = bodyPart.getContent();
+            if (content instanceof String) {
+                if (log.isDebugEnabled()) {
+                    log.debug("邮件{} 获取的正文不做解析，内容是 {}", subject, content);
+                }
+                continue;
+            }
+            if (content instanceof Multipart mp) {
                 this.reMultipart(account, subject, emailDate, mp, emailContentInfoDTOList);
             } else {
                 this.rePart(account, subject, emailDate, bodyPart, emailContentInfoDTOList);