ADD file via upload

flower_back/src/main/java/com/example/flower/service/DiscountService.java

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+package com.example.flower.service;
+
+import com.example.flower.entity.Discount;
+import com.example.flower.mapper.DiscountMapper;
+import com.example.flower.service.impl.DiscountServiceImpl;
+import com.github.pagehelper.PageHelper;
+import com.github.pagehelper.PageInfo;
+import jakarta.annotation.Resource;
+import org.springframework.stereotype.Service;
+
+@Service
+public class DiscountService implements DiscountServiceImpl{
+    @Resource
+    private DiscountMapper discountMapper;
+
+    @Override
+    public PageInfo<Discount> discountList(int page, int page_size) {
+        PageHelper.startPage(page,page_size);
+        return new PageInfo<>(discountMapper.discountList());
+    }
+    @Override
+    public PageInfo<Discount> discountListByQuery(int page,int page_size,String discount_name){
+        PageHelper.startPage(page,page_size);
+        return new PageInfo<>(discountMapper.discountListByQuery(discount_name));
+    }
+    @Override
+    public void discountAdd(Discount discount){
+        discountMapper.discountAdd(discount);
+    }
+    @Override
+    public int discountDeletePer(int discount_id){
+        return discountMapper.discountDeletePer(discount_id);
+    }
+    @Override
+    public int discountDeleteMul(int[] discount_ids){
+        return discountMapper.discountDeleteMul(discount_ids);
+    }
+    @Override
+    public Discount discountInfo(int discount_id){
+        return discountMapper.discountInfo(discount_id);
+    }
+    @Override
+    public int discountModify(Discount discount){
+        return discountMapper.discountModify(discount);
+    }
+}