Unable to find required classes (javax.activation.DataHandler and javax.mail.internet.MimeMultipart). Attachment support is disabled
错误原因：
需要mail.jar和activation.jar。
Solution:
Web Services Required Jars Download Instructions
http://www.eclipse.org/webtools/wst/components/ws/download_instructions_for_jars.html
解决办法：
1) 下载javamail和jaf，解压出mail.jar和activation.jar
http://java.sun.com/products/javamail/downloads/index.html
http://java.sun.com/products/javabeans/glasgow/jaf.html#download
或者我提供了一个rar包：包含mail.jar action.jar
download：mail.jar and activation.jar
2) 把mail.jar和activation.jar放到%AXIS_HOME%\WEB-INF\lib目录下
3) 将.jar文件添加到%CLASSPATH%
说明：
这个是可以忽略的。不过以后构建web services都要用到的，还是添加上的好。
参考：http://www.ogsadai.org.uk/documentation/ogsadai-wsi-2.1/doc/wsi/FAQ.html
This is a warning message that can safely be ignored. It is displayed when Axis has been deployed without an optional JAR. An optional JAR is one that allows Axis to support a particular piece of functionalty but is not required for general use. Please refer to the Axis documentation for more details.