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https://issues.apache.org/jira/browse/EMAIL-133?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16478821#comment-16478821
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Ankur Garg commented on EMAIL-133:
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[~tn] this seems to be very generic issue.
> Problem reading datasource name of inner email-message
> ------------------------------------------------------
>
> Key: EMAIL-133
> URL: https://issues.apache.org/jira/browse/EMAIL-133
> Project: Commons Email
> Issue Type: Bug
> Affects Versions: 1.3.1
> Environment: Outlook 2007, James 3.0 beta4
> Reporter: Olaf K.
> Priority: Major
> Attachments: Parent EMail.msg
>
>
> Situation:
> - Create EMail in Outlook and attach an other EMail (via Drag&Drop)
> e.g parent email subject: "Parent EMail", inner email subject: "Inner
> Email"
> - after parsing this email I try to acces the attachmentname, but the result
> is a null-value. I acpected "Inner Email" as the attachmentname.
> {code}
> mimeMessageParser.parse();
> List<DataSource> attachAsDataSource = mimeMessageParser.getAttachmentList();
> for (DataSource dataSource : attachAsDataSource) {
> String filename = dataSource.getName();
> // filename == null
> {code}
> To resolve this behavior I patched the Methode "getDataSourceName" in
> "MimeMessageParser" as follows.
> {code}
> ..
> if ("message/rfc822".equalsIgnoreCase(contentType)) {
> result = ((Message) part.getContent()).getSubject();
> // START: Optional
> if (StringUtils.isNotBlank(result)) {
> // Add eml-prefix, because binary data is in eml-format and I can use
> OUTLOOK.EXE /eml "filename"
> result += ".eml";
> } else {
> result = "unknown.eml";
> }
> // END: Optional
> }
> ...
> {code}
> Now the inner email is recognized as an email-message and the subject is used
> for the name.
> Is there an other way to receive the subject as the attachment-name (without
> patching)?
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