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3个dao的数据根据请求参数选择一个映射到一个url上，怎么写比较好?

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3个dao的数据根据请求参数选择一个映射到一个url上，怎么写比较好?

3个dao的数据要映射到一个url上，用请求参数指出使用哪一个dao。这个怎么选择？用@RequestParam在控制器里面做选择，还是在service里面做选择？


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在service里面判断参数 看下用什么dao


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