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Unable to find required classes (javax.activation.DataHandler and javax.mail.internet.MimeMultipart)
2014年02月12日 java编程 ⁄ 共 1923字 Unable to find required classes (javax.activation.DataHandler and javax.mail.internet.MimeMultipart)已关闭评论 ⁄ 被围观 2,164 views+

Unable to find required classes (javax.activation.DataHandler and javax.mail.internet.MimeMultipart). Attachment support is disabled

事实上这个问题很简单,我也是搜索了很长时间。但因为这个只是警告,不是出错。因此,只要新添一个log4j,便可以设定提示的警告状态。

错误原因:需要mail.jar和activation.jar。

一般的解决办法是:

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

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%

 

这个办法只会出现新的问题,如no manifiest section for signature file entry /DataContentHandlerFactory,因为需要signture file

 

但其实这个警告是可以忽略的,方法很简单

建立一个新 log4j.properties在JAR的首目录下,log4j.rootLogger=ERROR, Console

====== log4j.properties ====

 

====== end =====

====== build.xml ====

====== end =====

警告就会不再显示了

来自:http://blog.csdn.net/chastel/article/details/2084076

=========================================================

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.

备注:
一篇很好的jars下载指南:Web Services Required Jars Download Instructions
Axis指南:Guide to building Axis

来自:http://www.cppblog.com/wform/archive/2006/04/27/mail_activation_jar.html



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