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org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'orderServiceImpl' defined in file [C:\Users\songsyl\Desktop\study\core\out\production\classes\Hello\core\order\OrderServiceImpl.class]: Unsatisfied dependency expressed through constructor parameter 1: No qualifying bean of type 'Hello.core.discount.DiscountPolicy' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {}

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