货物包增长预测功能代码框架

src/main/java/com/rj/controller/LbGoodsController.java

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+package com.rj.controller;
+
+import com.rj.entity.LbGoods;
+import com.rj.service.ILbGoodsService;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.Parameter;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.Map;
+
+@RestController
+@RequestMapping("/api/lbGoods")
+@Tag(name = "LB 货品", description = "lb_goods 增删改查与分页")
+public class LbGoodsController {
+
+    @Autowired
+    private ILbGoodsService lbGoodsService;
+
+    @PostMapping("/add")
+    @Operation(summary = "新增")
+    public ResponseEntity<Map<String, Object>> add(
+            @Parameter(description = "实体（id 为外部商品 id，需调用方指定）", required = true)
+            @RequestBody LbGoods entity) {
+        Map<String, Object> result = lbGoodsService.add(entity);
+        Boolean success = (Boolean) result.get("success");
+        if (success != null && success) {
+            return ResponseEntity.ok(result);
+        }
+        return ResponseEntity.badRequest().body(result);
+    }
+
+    @PutMapping("/update")
+    @Operation(summary = "编辑")
+    public ResponseEntity<Map<String, Object>> update(
+            @Parameter(description = "实体", required = true) @RequestBody LbGoods entity) {
+        Map<String, Object> result = lbGoodsService.update(entity);
+        Boolean success = (Boolean) result.get("success");
+        if (success != null && success) {
+            return ResponseEntity.ok(result);
+        }
+        return ResponseEntity.badRequest().body(result);
+    }
+
+    @DeleteMapping("/delete/{id}")
+    @Operation(summary = "删除")
+    public ResponseEntity<Map<String, Object>> delete(
+            @Parameter(description = "主键（商品 id）", required = true) @PathVariable Long id) {
+        Map<String, Object> result = lbGoodsService.deleteById(id);
+        Boolean success = (Boolean) result.get("success");
+        if (success != null && success) {
+            return ResponseEntity.ok(result);
+        }
+        return ResponseEntity.badRequest().body(result);
+    }
+
+    @GetMapping("/get/{id}")
+    @Operation(summary = "根据ID查询")
+    public ResponseEntity<Map<String, Object>> getById(
+            @Parameter(description = "商品 id", required = true) @PathVariable Long id) {
+        LbGoods data = lbGoodsService.getById(id);
+        if (data == null) {
+            return ResponseEntity.badRequest().body(Map.of("success", false, "message", "记录不存在"));
+        }
+        return ResponseEntity.ok(Map.of("success", true, "message", "查询成功", "data", data));
+    }
+
+    @GetMapping("/list")
+    @Operation(summary = "分页查询")
+    public ResponseEntity<Map<String, Object>> list(
+            @RequestParam(defaultValue = "1") Integer current,
+            @RequestParam(defaultValue = "10") Integer size,
+            @RequestParam(required = false) String tenantId,
+            @RequestParam(required = false) Long oldId,
+            @RequestParam(required = false) Long userId,
+            @RequestParam(required = false) String title,
+            @RequestParam(required = false) Long sellerId,
+            @Parameter(description = "是否展示：0否 1是") @RequestParam(required = false) Integer isShow,
+            @RequestParam(required = false) Integer status,
+            @Parameter(description = "创建开始时间，格式：yyyy-MM-dd HH:mm:ss")
+            @RequestParam(required = false) String createdAtStart,
+            @Parameter(description = "创建结束时间，格式：yyyy-MM-dd HH:mm:ss")
+            @RequestParam(required = false) String createdAtEnd,
+            @Parameter(description = "更新开始时间，格式：yyyy-MM-dd HH:mm:ss")
+            @RequestParam(required = false) String updatedAtStart,
+            @Parameter(description = "更新结束时间，格式：yyyy-MM-dd HH:mm:ss")
+            @RequestParam(required = false) String updatedAtEnd) {
+        Map<String, Object> result = lbGoodsService.pageQuery(
+                current,
+                size,
+                tenantId,
+                oldId,
+                userId,
+                title,
+                sellerId,
+                isShow,
+                status,
+                createdAtStart,
+                createdAtEnd,
+                updatedAtStart,
+                updatedAtEnd);
+        Boolean success = (Boolean) result.get("success");
+        if (success != null && success) {
+            return ResponseEntity.ok(result);
+        }
+        if (result.get("message") != null && result.get("message").toString().contains("格式错误")) {
+            return ResponseEntity.badRequest().body(result);
+        }
+        return ResponseEntity.internalServerError().body(result);
+    }
+}

src/main/java/com/rj/entity/LbGoods.java

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+package com.rj.entity;
+
+import com.baomidou.mybatisplus.annotation.IdType;
+import com.baomidou.mybatisplus.annotation.TableField;
+import com.baomidou.mybatisplus.annotation.TableId;
+import com.baomidou.mybatisplus.annotation.TableName;
+import com.fasterxml.jackson.annotation.JsonFormat;
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.Data;
+import lombok.EqualsAndHashCode;
+
+import java.io.Serializable;
+import java.math.BigDecimal;
+import java.time.LocalDateTime;
+
+@Data
+@EqualsAndHashCode(callSuper = false)
+@TableName("lb_goods")
+@Schema(description = "货品表")
+@JsonIgnoreProperties(ignoreUnknown = true)
+public class LbGoods implements Serializable {
+
+    private static final long serialVersionUID = 1L;
+
+    @TableId(value = "id", type = IdType.INPUT)
+    @Schema(description = "商品ID（外部系统主键）")
+    private Long id;
+
+    @TableField("tenant_id")
+    @Schema(description = "租户ID")
+    private String tenantId;
+
+    @TableField("old_id")
+    @Schema(description = "旧商品ID（迁移/关联用）")
+    private Long oldId;
+
+    @TableField("user_id")
+    @Schema(description = "所属用户ID")
+    private Long userId;
+
+    @TableField("title")
+    @Schema(description = "商品标题")
+    private String title;
+
+    @TableField("image")
+    @Schema(description = "商品图片路径")
+    private String image;
+
+    @TableField("price")
+    @Schema(description = "单价")
+    private BigDecimal price;
+
+    @TableField("total_money")
+    @Schema(description = "总金额")
+    private BigDecimal totalMoney;
+
+    @TableField("quantity")
+    @Schema(description = "数量描述（如：≈6盒）")
+    private String quantity;
+
+    @TableField("seller_id")
+    @Schema(description = "卖家用户ID")
+    private Long sellerId;
+
+    @TableField("is_show")
+    @Schema(description = "是否展示：0否 1是")
+    private Integer isShow;
+
+    @TableField("status")
+    @Schema(description = "状态")
+    private Integer status;
+
+    @TableField("created_at")
+    @Schema(description = "创建时间")
+    @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss")
+    private LocalDateTime createdAt;
+
+    @TableField("updated_at")
+    @Schema(description = "更新时间")
+    @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss")
+    private LocalDateTime updatedAt;
+}

src/main/java/com/rj/mapper/LbGoodsMapper.java

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+package com.rj.mapper;
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import com.rj.entity.LbGoods;
+import org.apache.ibatis.annotations.Mapper;
+
+@Mapper
+public interface LbGoodsMapper extends BaseMapper<LbGoods> {
+}

src/main/java/com/rj/service/ILbGoodsService.java

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+package com.rj.service;
+
+import com.baomidou.mybatisplus.extension.service.IService;
+import com.rj.entity.LbGoods;
+
+import java.util.Map;
+
+public interface ILbGoodsService extends IService<LbGoods> {
+
+    Map<String, Object> add(LbGoods entity);
+
+    Map<String, Object> update(LbGoods entity);
+
+    Map<String, Object> deleteById(Long id);
+
+    Map<String, Object> pageQuery(
+            Integer current,
+            Integer size,
+            String tenantId,
+            Long oldId,
+            Long userId,
+            String title,
+            Long sellerId,
+            Integer isShow,
+            Integer status,
+            String createdAtStart,
+            String createdAtEnd,
+            String updatedAtStart,
+            String updatedAtEnd);
+}

src/main/java/com/rj/service/impl/LbGoodsServiceImpl.java

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+package com.rj.service.impl;
+
+import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
+import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
+import com.rj.entity.LbGoods;
+import com.rj.mapper.LbGoodsMapper;
+import com.rj.service.ILbGoodsService;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.stereotype.Service;
+
+import java.math.BigDecimal;
+import java.time.LocalDateTime;
+import java.time.format.DateTimeFormatter;
+import java.time.format.DateTimeParseException;
+import java.util.HashMap;
+import java.util.Map;
+
+@Slf4j
+@Service
+public class LbGoodsServiceImpl extends ServiceImpl<LbGoodsMapper, LbGoods> implements ILbGoodsService {
+
+    private static final DateTimeFormatter DATETIME_FMT = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
+
+    @Override
+    public Map<String, Object> add(LbGoods entity) {
+        Map<String, Object> result = new HashMap<>();
+        try {
+            if (entity.getId() == null) {
+                result.put("success", false);
+                result.put("message", "id不能为空");
+                return result;
+            }
+            if (entity.getTenantId() == null || entity.getTenantId().trim().isEmpty()) {
+                result.put("success", false);
+                result.put("message", "tenantId不能为空");
+                return result;
+            }
+            entity.setTenantId(entity.getTenantId().trim());
+            if (this.getById(entity.getId()) != null) {
+                result.put("success", false);
+                result.put("message", "该商品 id 已存在");
+                return result;
+            }
+
+            applyDefaults(entity);
+            LocalDateTime now = LocalDateTime.now();
+            if (entity.getCreatedAt() == null) {
+                entity.setCreatedAt(now);
+            }
+            if (entity.getUpdatedAt() == null) {
+                entity.setUpdatedAt(now);
+            }
+
+            boolean ok = this.save(entity);
+            result.put("success", ok);
+            result.put("message", ok ? "新增成功" : "新增失败");
+            if (ok) {
+                result.put("data", this.getById(entity.getId()));
+            }
+            return result;
+        } catch (Exception e) {
+            log.error("货品新增异常", e);
+            result.put("success", false);
+            result.put("message", "新增异常：" + e.getMessage());
+            return result;
+        }
+    }
+
+    @Override
+    public Map<String, Object> update(LbGoods entity) {
+        Map<String, Object> result = new HashMap<>();
+        try {
+            if (entity.getId() == null) {
+                result.put("success", false);
+                result.put("message", "id不能为空");
+                return result;
+            }
+            if (this.getById(entity.getId()) == null) {
+                result.put("success", false);
+                result.put("message", "记录不存在");
+                return result;
+            }
+            if (entity.getTenantId() != null) {
+                entity.setTenantId(entity.getTenantId().trim());
+            }
+
+            entity.setUpdatedAt(LocalDateTime.now());
+            boolean ok = this.updateById(entity);
+            result.put("success", ok);
+            result.put("message", ok ? "编辑成功" : "编辑失败");
+            if (ok) {
+                result.put("data", this.getById(entity.getId()));
+            }
+            return result;
+        } catch (Exception e) {
+            log.error("货品编辑异常", e);
+            result.put("success", false);
+            result.put("message", "编辑异常：" + e.getMessage());
+            return result;
+        }
+    }
+
+    @Override
+    public Map<String, Object> deleteById(Long id) {
+        Map<String, Object> result = new HashMap<>();
+        try {
+            if (id == null) {
+                result.put("success", false);
+                result.put("message", "id不能为空");
+                return result;
+            }
+            boolean ok = this.removeById(id);
+            result.put("success", ok);
+            result.put("message", ok ? "删除成功" : "删除失败");
+            return result;
+        } catch (Exception e) {
+            log.error("货品删除异常", e);
+            result.put("success", false);
+            result.put("message", "删除异常：" + e.getMessage());
+            return result;
+        }
+    }
+
+    @Override
+    public Map<String, Object> pageQuery(
+            Integer current,
+            Integer size,
+            String tenantId,
+            Long oldId,
+            Long userId,
+            String title,
+            Long sellerId,
+            Integer isShow,
+            Integer status,
+            String createdAtStart,
+            String createdAtEnd,
+            String updatedAtStart,
+            String updatedAtEnd) {
+        Map<String, Object> result = new HashMap<>();
+        try {
+            if (current == null || current < 1) {
+                current = 1;
+            }
+            if (size == null || size < 1) {
+                size = 10;
+            }
+
+            LambdaQueryWrapper<LbGoods> w = new LambdaQueryWrapper<>();
+            if (tenantId != null && !tenantId.trim().isEmpty()) {
+                w.eq(LbGoods::getTenantId, tenantId.trim());
+            }
+            if (oldId != null) {
+                w.eq(LbGoods::getOldId, oldId);
+            }
+            if (userId != null) {
+                w.eq(LbGoods::getUserId, userId);
+            }
+            if (title != null && !title.trim().isEmpty()) {
+                w.like(LbGoods::getTitle, title.trim());
+            }
+            if (sellerId != null) {
+                w.eq(LbGoods::getSellerId, sellerId);
+            }
+            if (isShow != null) {
+                w.eq(LbGoods::getIsShow, isShow);
+            }
+            if (status != null) {
+                w.eq(LbGoods::getStatus, status);
+            }
+
+            LocalDateTime createdStart = parseDateTime(createdAtStart);
+            if (createdAtStart != null && !createdAtStart.trim().isEmpty() && createdStart == null) {
+                result.put("success", false);
+                result.put("message", "createdAtStart 格式错误，请使用 yyyy-MM-dd HH:mm:ss");
+                return result;
+            }
+            LocalDateTime createdEnd = parseDateTime(createdAtEnd);
+            if (createdAtEnd != null && !createdAtEnd.trim().isEmpty() && createdEnd == null) {
+                result.put("success", false);
+                result.put("message", "createdAtEnd 格式错误，请使用 yyyy-MM-dd HH:mm:ss");
+                return result;
+            }
+            if (createdStart != null) {
+                w.ge(LbGoods::getCreatedAt, createdStart);
+            }
+            if (createdEnd != null) {
+                w.le(LbGoods::getCreatedAt, createdEnd);
+            }
+
+            LocalDateTime updatedStart = parseDateTime(updatedAtStart);
+            if (updatedAtStart != null && !updatedAtStart.trim().isEmpty() && updatedStart == null) {
+                result.put("success", false);
+                result.put("message", "updatedAtStart 格式错误，请使用 yyyy-MM-dd HH:mm:ss");
+                return result;
+            }
+            LocalDateTime updatedEnd = parseDateTime(updatedAtEnd);
+            if (updatedAtEnd != null && !updatedAtEnd.trim().isEmpty() && updatedEnd == null) {
+                result.put("success", false);
+                result.put("message", "updatedAtEnd 格式错误，请使用 yyyy-MM-dd HH:mm:ss");
+                return result;
+            }
+            if (updatedStart != null) {
+                w.ge(LbGoods::getUpdatedAt, updatedStart);
+            }
+            if (updatedEnd != null) {
+                w.le(LbGoods::getUpdatedAt, updatedEnd);
+            }
+
+            w.orderByDesc(LbGoods::getUpdatedAt).orderByDesc(LbGoods::getId);
+
+            Page<LbGoods> page = this.page(new Page<>(current, size), w);
+            result.put("success", true);
+            result.put("message", "查询成功");
+            result.put("data", page.getRecords());
+            result.put("total", page.getTotal());
+            result.put("current", page.getCurrent());
+            result.put("size", page.getSize());
+            result.put("pages", page.getPages());
+            return result;
+        } catch (Exception e) {
+            log.error("货品分页查询异常", e);
+            result.put("success", false);
+            result.put("message", "查询异常：" + e.getMessage());
+            return result;
+        }
+    }
+
+    private static void applyDefaults(LbGoods entity) {
+        if (entity.getPrice() == null) {
+            entity.setPrice(BigDecimal.ZERO);
+        }
+        if (entity.getTotalMoney() == null) {
+            entity.setTotalMoney(BigDecimal.ZERO);
+        }
+        if (entity.getIsShow() == null) {
+            entity.setIsShow(1);
+        }
+        if (entity.getStatus() == null) {
+            entity.setStatus(1);
+        }
+    }
+
+    private static LocalDateTime parseDateTime(String text) {
+        if (text == null || text.trim().isEmpty()) {
+            return null;
+        }
+        try {
+            return LocalDateTime.parse(text.trim(), DATETIME_FMT);
+        } catch (DateTimeParseException e) {
+            return null;
+        }
+    }
+}

src/main/sql/lb_goods.sql

@@ -0,0 +1,32 @@
+SET NAMES utf8mb4;
+SET FOREIGN_KEY_CHECKS = 0;
+
+DROP TABLE IF EXISTS `lb_goods`;
+CREATE TABLE `lb_goods` (
+  `id`           BIGINT         NOT NULL COMMENT '商品ID（外部系统主键）',
+  `tenant_id`    CHAR(36)       DEFAULT NULL COMMENT '租户id',
+  `old_id`       BIGINT         DEFAULT NULL COMMENT '旧商品ID（迁移/关联用）',
+  `user_id`      BIGINT         DEFAULT NULL COMMENT '所属用户ID',
+  `title`        VARCHAR(200)   DEFAULT NULL COMMENT '商品标题',
+  `image`        VARCHAR(512)   DEFAULT NULL COMMENT '商品图片路径',
+  `price`        DECIMAL(12, 2) NOT NULL DEFAULT 0.00 COMMENT '单价',
+  `total_money`  DECIMAL(12, 2) NOT NULL DEFAULT 0.00 COMMENT '总金额',
+  `quantity`     VARCHAR(64)    DEFAULT NULL COMMENT '数量描述（如：≈6盒）',
+  `seller_id`    BIGINT         DEFAULT NULL COMMENT '卖家用户ID',
+  `is_show`      TINYINT        NOT NULL DEFAULT 1 COMMENT '是否展示：0否 1是',
+  `status`       TINYINT        NOT NULL DEFAULT 1 COMMENT '状态',
+  `created_at`   DATETIME       DEFAULT NULL COMMENT '创建时间',
+  `updated_at`   DATETIME       DEFAULT NULL COMMENT '更新时间',
+  PRIMARY KEY (`id`) USING BTREE,
+  KEY `idx_old_id` (`old_id`) USING BTREE,
+  KEY `idx_user_id` (`user_id`) USING BTREE,
+  KEY `idx_seller_id` (`seller_id`) USING BTREE,
+  KEY `idx_status_is_show` (`status`, `is_show`) USING BTREE,
+  KEY `idx_created_at` (`created_at`) USING BTREE
+) ENGINE = InnoDB
+  DEFAULT CHARSET = utf8mb4
+  COLLATE = utf8mb4_0900_ai_ci
+  COMMENT = '货品表'
+  ROW_FORMAT = DYNAMIC;
+
+SET FOREIGN_KEY_CHECKS = 1;