the embed(URL url, String name) method of org.apache.commons.mail.HtmlEmail returns the cid for the embeded url.
the cid contains a random ascii string (containing chars like <,",', etc.).
of course it didn't worked in the email client if I used a cid containing char like <,",' that's why I tried to url encode (using java.net.URLEncoder). but it doens't worked also (at least not in the outlook and mozilla mail client).
that's why I changed the line
String cid = RandomStringUtils.randomAscii(10);
to
String cid = RandomStringUtils.randomAlphanumeric(10);
now it works.
but I wanted to ask if I understood sth wrong because I think there would be more uses than me how ran into this problem. If other users ran into the same problem we should fix the embed method. I don't know if my randomAlphanumeric(10) is a good solution.
joel below: original embed method from org.apache.commons.mail.HtmlEmail.
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public String embed(URL url, String name) throws MessagingException
{
MimeBodyPart mbp = new MimeBodyPart(); mbp.setDataHandler (new DataHandler(new URLDataSource(url)));
mbp.setFileName(name);
mbp.setDisposition("inline");
String cid = RandomStringUtils.randomAscii(10);
mbp.addHeader("Content-ID", cid); inlineImages.add(mbp);
return mbp.getContentID();
}
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