Window -> Preferences,Java -> Compiler -> Building.  
Under “Output folder” add “,`.svn/`” to “Filtered Resources” (so that you get “`*.launch,.svn/`”).

问题可能来自Jar导出器包含选项的事实：

"export generated class files and resources"
                                  ^^^^^^^^^

alt text http://i40.tinypic.com/6ylbvr.jpg

如果你过滤掉那些“资源”(.svn文件夹),很可能它们不会被包含在最后的Jar中.