标签：lang question ons otf stack lan except cti source
JDK9以上或JDK6以下使用mail.jar包不加JAF的activation.jar包会抛出该错误！JDK6以上不需要加该jar包；
参考原文
https://stackoverflow.com/questions/8186395/noclassdeffounderror-javax-activation-datasource
JAVAEmail工具错误java.lang.ClassNotFoundException: javax.activation.DataSource
标签：lang question ons otf stack lan except cti source
原文地址：https://www.cnblogs.com/galoliy/p/javaerr.html
