RCP 中 plugin.xml 的 % 不生效的解决办法

问题引入

开发RCP时，遇到 plugin.xml 中 "%XXXX"这样的字符串不显示 plugin.properties 设置的内容的问题，我们看一下官方解释：
http://nricheton.homeip.net/?p=83 原文链接

Localization in RCP plugins is usually done by including translations
in a property file and using their id in plugin.xml.

I spend some time lately trying to understand why some translations
were not used in my application although they were correctly displayed
in PDE.

Answer : when using plugin.properties, you MUST include the following
line in the plugin manifest :

Bundle-Localization: plugin

Otherwise, PDE will show the translated text, but your app won’t.

Strangely, I had to edit the manifest manually because I couldn’t find
a way to enable plugin localization in PDE. Some other plugins of my
application already had this line, but I don’t remember adding it.
Maybe Eclipse templates have changed since I created my first plugins
(using Eclipse 3.1).

总结

在 MANIFEST.中添加 Bundle-Localization: plugin ，这个可以让 % 匹配到 plugin.properties 中的内容