优惠券新增、修改、查询接口开发

src/main/java/com/chelvc/cloud/admin/controller/CouponController.java

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+package com.chelvc.cloud.admin.controller;
+
+import com.chelvc.cloud.trade.api.dto.CouponDTO;
+import com.chelvc.cloud.trade.api.param.CouponModifyParam;
+import com.chelvc.cloud.trade.api.param.CouponPagingParam;
+import com.chelvc.cloud.trade.api.service.CouponService;
+import com.chelvc.platform.base.annotation.UnifiedResponseBody;
+import com.chelvc.platform.base.model.Pagination;
+import com.chelvc.platform.base.util.ErrorUtils;
+import org.apache.dubbo.config.annotation.DubboReference;
+import org.springframework.validation.annotation.Validated;
+import org.springframework.web.bind.annotation.*;
+
+import javax.validation.Valid;
+import javax.validation.constraints.Min;
+
+/**
+ * 优惠券接口
+ *
+ * @author 七仔
+ * @Date 2023/4/3
+ **/
+@Validated
+@RestController
+@UnifiedResponseBody
+public class CouponController {
+    @DubboReference
+    private CouponService couponService;
+
+    /**
+     * 新增优惠券
+     *
+     * @param param 新增参数
+     * @return 优惠券主键
+     */
+    @PostMapping("/coupon")
+    public Long addCoupon(@RequestBody @Valid CouponModifyParam param) {
+        return this.couponService.addCoupon(param);
+    }
+
+    /**
+     * 修改优惠券
+     *
+     * @param id    优惠券主键
+     * @param param 修改参数
+     */
+    @PutMapping("/coupon/{id}")
+    public void updateCoupon(@PathVariable("id") @Min(value = 1, message = "优惠券主键不能小于1") Long id,
+                             @RequestBody @Valid CouponModifyParam param) {
+        this.couponService.updateCoupon(id, param);
+    }
+
+    /**
+     * 获取优惠券信息
+     *
+     * @param id 商品分类主键
+     * @return 商品分类信息
+     */
+    @GetMapping("/coupon/{id}")
+    public CouponDTO getCoupon(@PathVariable("id") @Min(value = 1, message = "优惠券主键不能小于1") Long id) {
+        CouponDTO coupon = this.couponService.getCoupon(id);
+        ErrorUtils.requireResource(coupon, "优惠券不存在");
+        return coupon;
+    }
+
+    /**
+     * 查询优惠券分页
+     *
+     * @param param 查询参数
+     * @return 优惠券分页信息
+     */
+    @GetMapping("/coupon/paging")
+    public Pagination<CouponDTO> getCouponPaging(@Valid CouponPagingParam param) {
+        return this.couponService.getCouponPaging(param);
+    }
+}