Unable to find required classes

错误描述

 利用webservice生成xml后在调用端调用时爆出警告 警告: 

Unable to find required classes (javax.activation.DataHandler and javax.mail.internet.MimeMultipart)

解决方法

在pom文件中加入依赖：

    <dependency>
        <groupId>javax.activation</groupId>
        <artifactId>activation</artifactId>
        <version>1.1.1</version>
    </dependency>
    <!-- 邮件start -->
    <dependency>
        <groupId>javax.mail</groupId>
        <artifactId>mail</artifactId>
        <version>1.4.7</version>
    </dependency>
    <!-- 邮件end -->