按照网上的一些教程，编写了个gradle插件的demo... 。apply插件时出现以下问题：
Error:(4, 0) Unable to load class 'com.example.DxfPlugin'.
Possible causes for this unexpected error include:<ul><li>
Gradle's dependency cache may be corrupt (this sometimes occurs after a network connection timeout.)
<a href="syncProject">
Re-download dependencies and sync project (requires network)</a></li><li>
The state of a Gradle build process (daemon) may be corrupt. Stopping all Gradle daemons may solve this problem.
<a href="stopGradleDaemons">Stop Gradle build processes (requires restart)</a></li><li>Your project may be using a third-party plugin which is not compatible with the other plugins in the project or the version of Gradle requested by the project.</li></ul>In the case of corrupt Gradle processes, you can also try closing the IDE and then killing all Java processes.
个人解决：
将插件java library中放置插件实现类的完整包的父文件夹名称由 "java"改成“groovy”
呜呼哀哉。。。。。
