The problem with this approach is that the designer of your graphical user interface would need to have knowledge of portlet technology to write the doView() method.
这种方法的问题是，图形用户界面的设计者需要具有 portlet 技术的知识来编写 doView() 方法。
All IBM products that support the JSR 168 Portlet Specification are based on the same technology.
所有支持JSR 168 Portlet规范的IBM产品都基于同一技术。
Although the portlet containers are based on the same technology, each portal framework differentiates in goal and extensions.
尽管两种Portlet容器基于相同的技术，但是每种门户框架在目标和扩展方面有差别。
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