JavaMail发送HTML邮件 no object DCH for MIME type multi

在发送邮件之前添加下面代码: 

MailcapCommandMap mc = (MailcapCommandMap) CommandMap.getDefaultCommandMap();

        mc.addMailcap("text/html;; x-java-content-handler=com.sun.mail.handlers.text_html");

        mc.addMailcap("text/xml;; x-java-content-handler=com.sun.mail.handlers.text_xml");

        mc.addMailcap("text/plain;; x-java-content-handler=com.sun.mail.handlers.text_plain");

        mc.addMailcap("multipart/*;; x-java-content-handler=com.sun.mail.handlers.multipart_mixed");

        mc.addMailcap("message/rfc822;; x-java-content-handler=com.sun.mail.handlers.message_rfc822");

        CommandMap.setDefaultCommandMap(mc);

来自:http://blog.csdn.net/lizhenmingdirk/article/details/11772549