add log

@@ -2,6 +2,7 @@ package com.yohoufo.order.utils;
 
 import com.google.common.collect.Lists;
 import lombok.Builder;
+import lombok.extern.slf4j.Slf4j;
 
 import javax.activation.DataHandler;
 import javax.activation.DataSource;
@@ -15,6 +16,7 @@ import java.io.IOException;
 import java.util.List;
 import java.util.Properties;
 
+@Slf4j
 public class MailSender {
 
     private Properties properties;
@@ -107,7 +109,7 @@ public class MailSender {
                 attachmentBodyPart.setDataHandler(dataHandler);
                 attachmentBodyPart.setFileName(MimeUtility.encodeText(attachment.filename));
             } catch (MessagingException | IOException e) {
-
+                log.warn("send mail attachment fail, to is {} filename is {}", to, attachment.filename);
             }
         });