feat(product-items): 新增内购商品管理功能

新增完整的内购商品模块，包含：
- 控制层、服务层、数据访问层
- 分页查询、保存、响应 VO
- MyBatis XML 映射
- 补充商品不存在错误码

keyboard-server/src/main/java/com/yolo/keyboard/controller/admin/productitems/KeyboardProductItemsController.java

@@ -0,0 +1,104 @@
+package com.yolo.keyboard.controller.admin.productitems;
+
+import org.springframework.web.bind.annotation.*;
+import jakarta.annotation.Resource;
+import org.springframework.validation.annotation.Validated;
+import org.springframework.security.access.prepost.PreAuthorize;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import io.swagger.v3.oas.annotations.Parameter;
+import io.swagger.v3.oas.annotations.Operation;
+
+import jakarta.validation.constraints.*;
+import jakarta.validation.*;
+import jakarta.servlet.http.*;
+import java.util.*;
+import java.io.IOException;
+
+import com.yolo.keyboard.framework.common.pojo.PageParam;
+import com.yolo.keyboard.framework.common.pojo.PageResult;
+import com.yolo.keyboard.framework.common.pojo.CommonResult;
+import com.yolo.keyboard.framework.common.util.object.BeanUtils;
+import static com.yolo.keyboard.framework.common.pojo.CommonResult.success;
+
+import com.yolo.keyboard.framework.excel.core.util.ExcelUtils;
+
+import com.yolo.keyboard.framework.apilog.core.annotation.ApiAccessLog;
+import static com.yolo.keyboard.framework.apilog.core.enums.OperateTypeEnum.*;
+
+import com.yolo.keyboard.controller.admin.productitems.vo.*;
+import com.yolo.keyboard.dal.dataobject.productitems.KeyboardProductItemsDO;
+import com.yolo.keyboard.service.productitems.KeyboardProductItemsService;
+
+@Tag(name = "管理后台 - 内购商品")
+@RestController
+@RequestMapping("/keyboard/product-items")
+@Validated
+public class KeyboardProductItemsController {
+
+    @Resource
+    private KeyboardProductItemsService productItemsService;
+
+    @PostMapping("/create")
+    @Operation(summary = "创建内购商品")
+    @PreAuthorize("@ss.hasPermission('keyboard:product-items:create')")
+    public CommonResult<Long> createProductItems(@Valid @RequestBody KeyboardProductItemsSaveReqVO createReqVO) {
+        return success(productItemsService.createProductItems(createReqVO));
+    }
+
+    @PutMapping("/update")
+    @Operation(summary = "更新内购商品")
+    @PreAuthorize("@ss.hasPermission('keyboard:product-items:update')")
+    public CommonResult<Boolean> updateProductItems(@Valid @RequestBody KeyboardProductItemsSaveReqVO updateReqVO) {
+        productItemsService.updateProductItems(updateReqVO);
+        return success(true);
+    }
+
+    @DeleteMapping("/delete")
+    @Operation(summary = "删除内购商品")
+    @Parameter(name = "id", description = "编号", required = true)
+    @PreAuthorize("@ss.hasPermission('keyboard:product-items:delete')")
+    public CommonResult<Boolean> deleteProductItems(@RequestParam("id") Long id) {
+        productItemsService.deleteProductItems(id);
+        return success(true);
+    }
+
+    @DeleteMapping("/delete-list")
+    @Parameter(name = "ids", description = "编号", required = true)
+    @Operation(summary = "批量删除内购商品")
+                @PreAuthorize("@ss.hasPermission('keyboard:product-items:delete')")
+    public CommonResult<Boolean> deleteProductItemsList(@RequestParam("ids") List<Long> ids) {
+        productItemsService.deleteProductItemsListByIds(ids);
+        return success(true);
+    }
+
+    @GetMapping("/get")
+    @Operation(summary = "获得内购商品")
+    @Parameter(name = "id", description = "编号", required = true, example = "1024")
+    @PreAuthorize("@ss.hasPermission('keyboard:product-items:query')")
+    public CommonResult<KeyboardProductItemsRespVO> getProductItems(@RequestParam("id") Long id) {
+        KeyboardProductItemsDO productItems = productItemsService.getProductItems(id);
+        return success(BeanUtils.toBean(productItems, KeyboardProductItemsRespVO.class));
+    }
+
+    @GetMapping("/page")
+    @Operation(summary = "获得内购商品分页")
+    @PreAuthorize("@ss.hasPermission('keyboard:product-items:query')")
+    public CommonResult<PageResult<KeyboardProductItemsRespVO>> getProductItemsPage(@Valid KeyboardProductItemsPageReqVO pageReqVO) {
+        PageResult<KeyboardProductItemsDO> pageResult = productItemsService.getProductItemsPage(pageReqVO);
+        return success(BeanUtils.toBean(pageResult, KeyboardProductItemsRespVO.class));
+    }
+
+    @GetMapping("/export-excel")
+    @Operation(summary = "导出内购商品 Excel")
+    @PreAuthorize("@ss.hasPermission('keyboard:product-items:export')")
+    @ApiAccessLog(operateType = EXPORT)
+    public void exportProductItemsExcel(@Valid KeyboardProductItemsPageReqVO pageReqVO,
+              HttpServletResponse response) throws IOException {
+        pageReqVO.setPageSize(PageParam.PAGE_SIZE_NONE);
+        List<KeyboardProductItemsDO> list = productItemsService.getProductItemsPage(pageReqVO).getList();
+        // 导出 Excel
+        ExcelUtils.write(response, "内购商品.xls", "数据", KeyboardProductItemsRespVO.class,
+                        BeanUtils.toBean(list, KeyboardProductItemsRespVO.class));
+    }
+
+}

keyboard-server/src/main/java/com/yolo/keyboard/controller/admin/productitems/vo/KeyboardProductItemsPageReqVO.java

@@ -0,0 +1,53 @@
+package com.yolo.keyboard.controller.admin.productitems.vo;
+
+import lombok.*;
+import java.util.*;
+import io.swagger.v3.oas.annotations.media.Schema;
+import com.yolo.keyboard.framework.common.pojo.PageParam;
+import java.math.BigDecimal;
+import org.springframework.format.annotation.DateTimeFormat;
+import java.time.LocalDateTime;
+
+import static com.yolo.keyboard.framework.common.util.date.DateUtils.FORMAT_YEAR_MONTH_DAY_HOUR_MINUTE_SECOND;
+
+@Schema(description = "管理后台 - 内购商品分页 Request VO")
+@Data
+public class KeyboardProductItemsPageReqVO extends PageParam {
+
+    @Schema(description = "产品标识符，唯一标识每个产品（如 com.loveKey.nyx.2month）", example = "15153")
+    private String productId;
+
+    @Schema(description = "产品类型，区分订阅（subscription）和内购（in-app-purchase）", example = "1")
+    private String type;
+
+    @Schema(description = "产品名称（如 100, 2）", example = "芋艿")
+    private String name;
+
+    @Schema(description = "产品单位（如 金币，个月）")
+    private String unit;
+
+    @Schema(description = "订阅时长的数值部分（如 2）")
+    private Integer durationValue;
+
+    @Schema(description = "订阅时长的单位部分（如 月，天）")
+    private String durationUnit;
+
+    @Schema(description = "产品价格", example = "25376")
+    private BigDecimal price;
+
+    @Schema(description = "产品的货币单位，如美元（$）")
+    private String currency;
+
+    @Schema(description = "产品的描述，提供更多细节信息", example = "你说的对")
+    private String description;
+
+    @Schema(description = "产品项的创建时间，默认当前时间")
+    private LocalDateTime createdAt;
+
+    @Schema(description = "产品项的最后更新时间，更新时自动设置为当前时间")
+    private LocalDateTime updatedAt;
+
+    @Schema(description = "订阅时长的具体天数")
+    private Integer durationDays;
+
+}

keyboard-server/src/main/java/com/yolo/keyboard/controller/admin/productitems/vo/KeyboardProductItemsRespVO.java

@@ -0,0 +1,68 @@
+package com.yolo.keyboard.controller.admin.productitems.vo;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.*;
+import java.util.*;
+import java.math.BigDecimal;
+import org.springframework.format.annotation.DateTimeFormat;
+import java.time.LocalDateTime;
+import cn.idev.excel.annotation.*;
+
+@Schema(description = "管理后台 - 内购商品 Response VO")
+@Data
+@ExcelIgnoreUnannotated
+public class KeyboardProductItemsRespVO {
+
+    @Schema(description = "主键，自增，唯一标识每个产品项", requiredMode = Schema.RequiredMode.REQUIRED, example = "7855")
+    @ExcelProperty("主键，自增，唯一标识每个产品项")
+    private Long id;
+
+    @Schema(description = "产品标识符，唯一标识每个产品（如 com.loveKey.nyx.2month）", requiredMode = Schema.RequiredMode.REQUIRED, example = "15153")
+    @ExcelProperty("产品标识符，唯一标识每个产品（如 com.loveKey.nyx.2month）")
+    private String productId;
+
+    @Schema(description = "产品类型，区分订阅（subscription）和内购（in-app-purchase）", requiredMode = Schema.RequiredMode.REQUIRED, example = "1")
+    @ExcelProperty("产品类型，区分订阅（subscription）和内购（in-app-purchase）")
+    private String type;
+
+    @Schema(description = "产品名称（如 100, 2）", requiredMode = Schema.RequiredMode.REQUIRED, example = "芋艿")
+    @ExcelProperty("产品名称（如 100, 2）")
+    private String name;
+
+    @Schema(description = "产品单位（如 金币，个月）")
+    @ExcelProperty("产品单位（如 金币，个月）")
+    private String unit;
+
+    @Schema(description = "订阅时长的数值部分（如 2）")
+    @ExcelProperty("订阅时长的数值部分（如 2）")
+    private Integer durationValue;
+
+    @Schema(description = "订阅时长的单位部分（如 月，天）")
+    @ExcelProperty("订阅时长的单位部分（如 月，天）")
+    private String durationUnit;
+
+    @Schema(description = "产品价格", requiredMode = Schema.RequiredMode.REQUIRED, example = "25376")
+    @ExcelProperty("产品价格")
+    private BigDecimal price;
+
+    @Schema(description = "产品的货币单位，如美元（$）", requiredMode = Schema.RequiredMode.REQUIRED)
+    @ExcelProperty("产品的货币单位，如美元（$）")
+    private String currency;
+
+    @Schema(description = "产品的描述，提供更多细节信息", example = "你说的对")
+    @ExcelProperty("产品的描述，提供更多细节信息")
+    private String description;
+
+    @Schema(description = "产品项的创建时间，默认当前时间")
+    @ExcelProperty("产品项的创建时间，默认当前时间")
+    private LocalDateTime createdAt;
+
+    @Schema(description = "产品项的最后更新时间，更新时自动设置为当前时间")
+    @ExcelProperty("产品项的最后更新时间，更新时自动设置为当前时间")
+    private LocalDateTime updatedAt;
+
+    @Schema(description = "订阅时长的具体天数", requiredMode = Schema.RequiredMode.REQUIRED)
+    @ExcelProperty("订阅时长的具体天数")
+    private Integer durationDays;
+
+}

keyboard-server/src/main/java/com/yolo/keyboard/controller/admin/productitems/vo/KeyboardProductItemsSaveReqVO.java

@@ -0,0 +1,60 @@
+package com.yolo.keyboard.controller.admin.productitems.vo;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.*;
+import java.util.*;
+import jakarta.validation.constraints.*;
+import java.math.BigDecimal;
+import org.springframework.format.annotation.DateTimeFormat;
+import java.time.LocalDateTime;
+
+@Schema(description = "管理后台 - 内购商品新增/修改 Request VO")
+@Data
+public class KeyboardProductItemsSaveReqVO {
+
+    @Schema(description = "主键，自增，唯一标识每个产品项", requiredMode = Schema.RequiredMode.REQUIRED, example = "7855")
+    private Long id;
+
+    @Schema(description = "产品标识符，唯一标识每个产品（如 com.loveKey.nyx.2month）", requiredMode = Schema.RequiredMode.REQUIRED, example = "15153")
+    @NotEmpty(message = "产品标识符，唯一标识每个产品（如 com.loveKey.nyx.2month）不能为空")
+    private String productId;
+
+    @Schema(description = "产品类型，区分订阅（subscription）和内购（in-app-purchase）", requiredMode = Schema.RequiredMode.REQUIRED, example = "1")
+    @NotEmpty(message = "产品类型，区分订阅（subscription）和内购（in-app-purchase）不能为空")
+    private String type;
+
+    @Schema(description = "产品名称（如 100, 2）", requiredMode = Schema.RequiredMode.REQUIRED, example = "芋艿")
+    @NotEmpty(message = "产品名称（如 100, 2）不能为空")
+    private String name;
+
+    @Schema(description = "产品单位（如 金币，个月）")
+    private String unit;
+
+    @Schema(description = "订阅时长的数值部分（如 2）")
+    private Integer durationValue;
+
+    @Schema(description = "订阅时长的单位部分（如 月，天）")
+    private String durationUnit;
+
+    @Schema(description = "产品价格", requiredMode = Schema.RequiredMode.REQUIRED, example = "25376")
+    @NotNull(message = "产品价格不能为空")
+    private BigDecimal price;
+
+    @Schema(description = "产品的货币单位，如美元（$）", requiredMode = Schema.RequiredMode.REQUIRED)
+    @NotEmpty(message = "产品的货币单位，如美元（$）不能为空")
+    private String currency;
+
+    @Schema(description = "产品的描述，提供更多细节信息", example = "你说的对")
+    private String description;
+
+    @Schema(description = "产品项的创建时间，默认当前时间")
+    private LocalDateTime createdAt;
+
+    @Schema(description = "产品项的最后更新时间，更新时自动设置为当前时间")
+    private LocalDateTime updatedAt;
+
+    @Schema(description = "订阅时长的具体天数", requiredMode = Schema.RequiredMode.REQUIRED)
+    @NotNull(message = "订阅时长的具体天数不能为空")
+    private Integer durationDays;
+
+}

keyboard-server/src/main/java/com/yolo/keyboard/dal/dataobject/productitems/KeyboardProductItemsDO.java

@@ -0,0 +1,82 @@
+package com.yolo.keyboard.dal.dataobject.productitems;
+
+import com.yolo.keyboard.framework.tenant.core.aop.TenantIgnore;
+import lombok.*;
+import java.util.*;
+import java.math.BigDecimal;
+import java.time.LocalDateTime;
+import java.time.LocalDateTime;
+import com.baomidou.mybatisplus.annotation.*;
+import com.yolo.keyboard.framework.mybatis.core.dataobject.BaseDO;
+
+/**
+ * 内购商品 DO
+ *
+ * @author ziin
+ */
+@TableName("keyboard_product_items")
+@KeySequence("keyboard_product_items_seq") // 用于 Oracle、PostgreSQL、Kingbase、DB2、H2 数据库的主键自增。如果是 MySQL 等数据库，可不写。
+@Data
+@ToString(callSuper = true)
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
+@TenantIgnore
+public class KeyboardProductItemsDO{
+
+    /**
+     * 主键，自增，唯一标识每个产品项
+     */
+    @TableId
+    private Long id;
+    /**
+     * 产品标识符，唯一标识每个产品（如 com.loveKey.nyx.2month）
+     */
+    private String productId;
+    /**
+     * 产品类型，区分订阅（subscription）和内购（in-app-purchase）
+     */
+    private String type;
+    /**
+     * 产品名称（如 100, 2）
+     */
+    private String name;
+    /**
+     * 产品单位（如 金币，个月）
+     */
+    private String unit;
+    /**
+     * 订阅时长的数值部分（如 2）
+     */
+    private Integer durationValue;
+    /**
+     * 订阅时长的单位部分（如 月，天）
+     */
+    private String durationUnit;
+    /**
+     * 产品价格
+     */
+    private BigDecimal price;
+    /**
+     * 产品的货币单位，如美元（$）
+     */
+    private String currency;
+    /**
+     * 产品的描述，提供更多细节信息
+     */
+    private String description;
+    /**
+     * 产品项的创建时间，默认当前时间
+     */
+    private LocalDateTime createdAt;
+    /**
+     * 产品项的最后更新时间，更新时自动设置为当前时间
+     */
+    private LocalDateTime updatedAt;
+    /**
+     * 订阅时长的具体天数
+     */
+    private Integer durationDays;
+
+
+}

keyboard-server/src/main/java/com/yolo/keyboard/dal/mysql/productitems/KeyboardProductItemsMapper.java

@@ -0,0 +1,37 @@
+package com.yolo.keyboard.dal.mysql.productitems;
+
+import java.util.*;
+
+import com.yolo.keyboard.framework.common.pojo.PageResult;
+import com.yolo.keyboard.framework.mybatis.core.query.LambdaQueryWrapperX;
+import com.yolo.keyboard.framework.mybatis.core.mapper.BaseMapperX;
+import com.yolo.keyboard.dal.dataobject.productitems.KeyboardProductItemsDO;
+import org.apache.ibatis.annotations.Mapper;
+import com.yolo.keyboard.controller.admin.productitems.vo.*;
+
+/**
+ * 内购商品 Mapper
+ *
+ * @author ziin
+ */
+@Mapper
+public interface KeyboardProductItemsMapper extends BaseMapperX<KeyboardProductItemsDO> {
+
+    default PageResult<KeyboardProductItemsDO> selectPage(KeyboardProductItemsPageReqVO reqVO) {
+        return selectPage(reqVO, new LambdaQueryWrapperX<KeyboardProductItemsDO>()
+                .eqIfPresent(KeyboardProductItemsDO::getProductId, reqVO.getProductId())
+                .eqIfPresent(KeyboardProductItemsDO::getType, reqVO.getType())
+                .likeIfPresent(KeyboardProductItemsDO::getName, reqVO.getName())
+                .eqIfPresent(KeyboardProductItemsDO::getUnit, reqVO.getUnit())
+                .eqIfPresent(KeyboardProductItemsDO::getDurationValue, reqVO.getDurationValue())
+                .eqIfPresent(KeyboardProductItemsDO::getDurationUnit, reqVO.getDurationUnit())
+                .eqIfPresent(KeyboardProductItemsDO::getPrice, reqVO.getPrice())
+                .eqIfPresent(KeyboardProductItemsDO::getCurrency, reqVO.getCurrency())
+                .eqIfPresent(KeyboardProductItemsDO::getDescription, reqVO.getDescription())
+                .eqIfPresent(KeyboardProductItemsDO::getCreatedAt, reqVO.getCreatedAt())
+                .eqIfPresent(KeyboardProductItemsDO::getUpdatedAt, reqVO.getUpdatedAt())
+                .eqIfPresent(KeyboardProductItemsDO::getDurationDays, reqVO.getDurationDays())
+                .orderByDesc(KeyboardProductItemsDO::getId));
+    }
+
+}

keyboard-server/src/main/java/com/yolo/keyboard/service/productitems/KeyboardProductItemsService.java

@@ -0,0 +1,62 @@
+package com.yolo.keyboard.service.productitems;
+
+import java.util.*;
+import jakarta.validation.*;
+import com.yolo.keyboard.controller.admin.productitems.vo.*;
+import com.yolo.keyboard.dal.dataobject.productitems.KeyboardProductItemsDO;
+import com.yolo.keyboard.framework.common.pojo.PageResult;
+import com.yolo.keyboard.framework.common.pojo.PageParam;
+
+/**
+ * 内购商品 Service 接口
+ *
+ * @author ziin
+ */
+public interface KeyboardProductItemsService {
+
+    /**
+     * 创建内购商品
+     *
+     * @param createReqVO 创建信息
+     * @return 编号
+     */
+    Long createProductItems(@Valid KeyboardProductItemsSaveReqVO createReqVO);
+
+    /**
+     * 更新内购商品
+     *
+     * @param updateReqVO 更新信息
+     */
+    void updateProductItems(@Valid KeyboardProductItemsSaveReqVO updateReqVO);
+
+    /**
+     * 删除内购商品
+     *
+     * @param id 编号
+     */
+    void deleteProductItems(Long id);
+
+    /**
+    * 批量删除内购商品
+    *
+    * @param ids 编号
+    */
+    void deleteProductItemsListByIds(List<Long> ids);
+
+    /**
+     * 获得内购商品
+     *
+     * @param id 编号
+     * @return 内购商品
+     */
+    KeyboardProductItemsDO getProductItems(Long id);
+
+    /**
+     * 获得内购商品分页
+     *
+     * @param pageReqVO 分页查询
+     * @return 内购商品分页
+     */
+    PageResult<KeyboardProductItemsDO> getProductItemsPage(KeyboardProductItemsPageReqVO pageReqVO);
+
+}

keyboard-server/src/main/java/com/yolo/keyboard/service/productitems/KeyboardProductItemsServiceImpl.java

@@ -0,0 +1,85 @@
+package com.yolo.keyboard.service.productitems;
+
+import cn.hutool.core.collection.CollUtil;
+import org.springframework.stereotype.Service;
+import jakarta.annotation.Resource;
+import org.springframework.validation.annotation.Validated;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.util.*;
+import com.yolo.keyboard.controller.admin.productitems.vo.*;
+import com.yolo.keyboard.dal.dataobject.productitems.KeyboardProductItemsDO;
+import com.yolo.keyboard.framework.common.pojo.PageResult;
+import com.yolo.keyboard.framework.common.pojo.PageParam;
+import com.yolo.keyboard.framework.common.util.object.BeanUtils;
+
+import com.yolo.keyboard.dal.mysql.productitems.KeyboardProductItemsMapper;
+
+import static com.yolo.keyboard.framework.common.exception.util.ServiceExceptionUtil.exception;
+import static com.yolo.keyboard.framework.common.util.collection.CollectionUtils.convertList;
+import static com.yolo.keyboard.framework.common.util.collection.CollectionUtils.diffList;
+import static com.yolo.keyboard.module.infra.enums.ErrorCodeConstants.PRODUCT_ITEMS_NOT_EXISTS;
+
+/**
+ * 内购商品 Service 实现类
+ *
+ * @author ziin
+ */
+@Service
+@Validated
+public class KeyboardProductItemsServiceImpl implements KeyboardProductItemsService {
+
+    @Resource
+    private KeyboardProductItemsMapper productItemsMapper;
+
+    @Override
+    public Long createProductItems(KeyboardProductItemsSaveReqVO createReqVO) {
+        // 插入
+        KeyboardProductItemsDO productItems = BeanUtils.toBean(createReqVO, KeyboardProductItemsDO.class);
+        productItemsMapper.insert(productItems);
+
+        // 返回
+        return productItems.getId();
+    }
+
+    @Override
+    public void updateProductItems(KeyboardProductItemsSaveReqVO updateReqVO) {
+        // 校验存在
+        validateProductItemsExists(updateReqVO.getId());
+        // 更新
+        KeyboardProductItemsDO updateObj = BeanUtils.toBean(updateReqVO, KeyboardProductItemsDO.class);
+        productItemsMapper.updateById(updateObj);
+    }
+
+    @Override
+    public void deleteProductItems(Long id) {
+        // 校验存在
+        validateProductItemsExists(id);
+        // 删除
+        productItemsMapper.deleteById(id);
+    }
+
+    @Override
+        public void deleteProductItemsListByIds(List<Long> ids) {
+        // 删除
+        productItemsMapper.deleteByIds(ids);
+        }
+
+
+    private void validateProductItemsExists(Long id) {
+        if (productItemsMapper.selectById(id) == null) {
+            throw exception(PRODUCT_ITEMS_NOT_EXISTS);
+        }
+    }
+
+    @Override
+    public KeyboardProductItemsDO getProductItems(Long id) {
+        return productItemsMapper.selectById(id);
+    }
+
+    @Override
+    public PageResult<KeyboardProductItemsDO> getProductItemsPage(KeyboardProductItemsPageReqVO pageReqVO) {
+        return productItemsMapper.selectPage(pageReqVO);
+    }
+
+}

keyboard-server/src/main/resources/mapper/productitems/KeyboardProductItemsMapper.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+<mapper namespace="com.yolo.keyboard.module.keyboard.dal.mysql.productitems.KeyboardProductItemsMapper">
+
+    <!--
+        一般情况下，尽可能使用 Mapper 进行 CRUD 增删改查即可。
+        无法满足的场景，例如说多表关联查询，才使用 XML 编写 SQL。
+        代码生成器暂时只生成 Mapper XML 文件本身，更多推荐 MybatisX 快速开发插件来生成查询。
+        文档可见：https://www.iocoder.cn/MyBatis/x-plugins/
+     -->
+
+</mapper>

yolo-module-infra/src/main/java/com/yolo/keyboard/module/infra/enums/ErrorCodeConstants.java

@@ -78,6 +78,7 @@ public interface ErrorCodeConstants {
     ErrorCode CHARACTER_NOT_EXISTS = new ErrorCode(1_001_202_004, "键盘人设不存在");
     ErrorCode USER_WALLET_NOT_EXISTS = new ErrorCode(1_001_202_005, "用户钱包不存在");
     ErrorCode USER_PURCHASE_RECORDS_NOT_EXISTS = new ErrorCode(1_001_202_006, "用户内购记录不存在");
+    ErrorCode PRODUCT_ITEMS_NOT_EXISTS = new ErrorCode(1_001_202_007, "内购商品不存在");