Wednesday, May 2, 2012

Missing start boundary Exception when sending messages with an attachment file in Tomcat

I've found a number of possible matches to this problem but none that work for me.

I'm using Apache Camel to deliver a file as an email attachement. It works perfectly using the following maven goals:


I'm using java 1.6. My deployment container is tomcat6. In tomcat6 and tomcat7 I get the following exception:

org.springframework.mail.MailSendException: Failed messages: javax.mail.MessagingException: Missing start boundary; message exception details (1) are:
Failed message 1:
javax.mail.MessagingException: Missing start boundary
at javax.mail.internet.MimeMultipart.parsebm(

The advice on the web suggests this is a class loader problem. Its either that the activation-1.1.jar or mail-1.4.4.jar files are not being found, or the mailcap file in mail-1.4.4.jar is not being found.

I've tried putting these jar files in tomcat/lib. I've tried copying the mailcap from the jar file into the META-INF directory of the exploded war. Neither of these make a difference.


Windows: Apache Tomcat/7.0.5 JDK 1.6.0_27-b07 Apache Camel 2.8.0-fuse-00-08

Linux - the versions that come with ubuntu 10.04 LTS - I'll check these later and add.

This is a simplified version of my camel routes:

<route id="uploadFileForm">
<from uri="jetty:"/>
<to uri="velocity:form.html"/>
<route id="uploadFile">
<from uri="jetty:"/>
<to uri="log:mail?showBody=true&amp;showHeaders=true"/>
<to uri="smtp://localhost"/>
<setHeader headerName="content-type"><constant>text/plain</constant></setHeader>
<setBody><constant>Message Sent</constant></setBody>

This is what the log shows:

[4 - seda://mail-ws-audio-files] mail                           INFO  Exchange[ExchangePattern:InOut, Headers:{Connection=Keep-Alive, CamelHttpServletRequest=org.eclipse.jetty.servlets.MultiPartFilter$Wrapper@bb32c5, upfile=D:downloads!37SQFTS.pdf, CamelHttpPath=/fup, subject=BBC Premier League Update - Edition 1, CamelHttpQuery=null, CamelHttpServletResponse=HTTP/1.1 200 

, UntilMessage=until 10:30 GMT when a second bulletin is available (Mon-Fri only), Host=localhost:9095, User-Agent=Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET4.0C; .NET4.0E), Accept-Encoding=gzip, deflate, bulletin_type=am,, cc=admin@localhost, breadcrumbId=ID-B1-L0N336601-58958-1335935026761-0-2, CamelHttpUrl=http://localhost:9095/fup, Content-Length=24896, Referer=http://localhost:9095/premier,, Accept=image/jpeg, application/x-ms-application, image/gif, application/xaml+xml, image/pjpeg, application/x-ms-xbap, application/, application/, application/msword, */*, Accept-Language=en-GB, Content-Type=multipart/form-data; boundary=---------------------------7dc3a8371906f6, CamelHttpUri=/fup, Cache-Control=no-cache, CamelHttpMethod=POST}, BodyType:String, Body:Dear Partner,

please find attached the latest edition of our file.

Any ideas?

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