有些jar 如oracle的驱动ojdbc14.jar 二维码依赖包QrCode.jar在maven中央库不存在，对于这些jar如何引入比较方便后续管理了？
I\'m trying to write a set of filtering functions that can be chained together to progressively filter a data set. What\'s tricky about this is that I want to be able to define the filters in a differ
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