回复: Email attachment lost with poll enrich

[_ Jane]

Hi Daniel,

Thanks for your reply!

I've tried "org.apache.camel.component.mail.SplitAttachmentsExpression". It 
failed because it used safeCopyProperties "CamelAttachmentObjects" to get email 
attachment as well.

________________________________
发件人: Daniel Langevin <daniel.lange...@shq.gouv.qc.ca>
发送时间: 2023年9月7日 0:35
收件人: users@camel.apache.org <users@camel.apache.org>
主题: RE: Email attachment lost with poll enrich

Hi,

You can try  "org.apache.camel.component.mail.SplitAttachmentsExpression"


Here a part of my code to achieve with attachment, hope it's Help


Daniel

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<split >
     <method 
beanType="org.apache.camel.component.mail.SplitAttachmentsExpression" />

<!-- Attachment name -->
<setHeader name="attchName"><groovy>result="null"</groovy></setHeader> <!-- 
reset to null in each interration -->
<setHeader name="attchName">            <!-- decode name  (rfc5987) -->
        <groovy>
           def MimeUtility = new javax.mail.internet.MimeUtility();
           if (request.headers['CamelSplitAttachmentId'] != null ) {
               result = 
MimeUtility.decodeText(request.headers['CamelSplitAttachmentId']);
              }
              else {
               result = "null" ;
              }
         result = result.replaceAll('/','_');
        </groovy>
     </setHeader>

    <log message="Attch Name        : ${header.attchName} " />
    <log message="Attch CamelSplitAttd: ${header.CamelSplitAttachmentId} " />
    <log message="Attch splitindex    : ${header.CamelSplitIndex} " />
    <log message="Attch splitsize     : ${header.CamelSplitSize} " />
<choice>
        <when><simple>${header.attchName} != "null"</simple>
              <setHeader name="zzCamelSplitAttachmentId" 
><simple>${header.CamelSplitAttachmentId.replaceAll('/','_')}</simple></setHeader>
            <!-- BODY contain attchment in BYTE since camel 3.xx -->
            <!-- Write the attachment on disk
              <to uri="file:{{SSStempAttchment}}?fileName=${header.attchName}" 
/>
              <stop/>
        </when>
 </choice>
 </split>
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-----Message d'origine-----
De : _ Jane <belief...@hotmail.com>
Envoyé : 5 septembre 2023 22:30
À : users@camel.apache.org
Objet : Email attachment lost with poll enrich

Dear Community,

When using poll enrich to get email with attachments, I found that the email 
attachments lost when I'm using Camel 3.18.6.
I tried to debug the programe and found the root cause that PollEnricher uses 
ExchangeHelper.copyResultsPreservePattern() to copy resource Exchange to result 
Exchange. But ExchangeHelper.copyResultsPreservePattern() doesn't copy 
safeCopyProperties which containing the "CamelAttachmentObjects" until it's 
fixed in Camel 4.0.0.

My question is: is there any workaround with less effort to let me get the 
email attachment with poll enrich using Camel 3.18.6?

Regards,
Jane