1、商城商品服务新增前端页面

2、实现获取首页获取三级分类

ruoyi-ui/src/views/mall/product/attribute/attrupdate.vue

@@ -100,7 +100,9 @@ export default {
 
     showBaseAttrs() {
       let _this = this;
+      this.$modal.loading("请稍后...")
       getAttrGroupWithAttrs(this.catalogId).then(res => {
+        this.$modal.closeLoading()
         //先对表单的baseAttrs进行初始化
         res.data.forEach(item => {
           let attrArray = [];

xjs-business/xjs-project-mall/mall-product/pom.xml

@@ -18,4 +18,16 @@
         <maven.compiler.target>11</maven.compiler.target>
     </properties>
 
-</project>
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-thymeleaf</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-devtools</artifactId>
+        </dependency>
+    </dependencies>
+
+</project>

xjs-business/xjs-project-mall/mall-product/src/main/java/com/xjs/mall/product/controller/web/IndexController.java

@@ -0,0 +1,49 @@
+package com.xjs.mall.product.controller.web;
+
+import com.xjs.mall.product.entity.CategoryEntity;
+import com.xjs.mall.product.service.CategoryService;
+import com.xjs.mall.product.vo.Catelog2Vo;
+import io.swagger.annotations.Api;
+import io.swagger.annotations.ApiOperation;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.ResponseBody;
+
+import java.util.List;
+import java.util.Map;
+
+/**
+ * 首页控制器
+ *
+ * @author xiejs
+ * @since 2022-04-07
+ */
+@Controller
+@Api(tags = "商城-商品-首页")
+public class IndexController {
+
+    @Autowired
+    private CategoryService categoryService;
+
+    @GetMapping({"/", "index.html"})
+    public String indexPage(Model model) {
+        //查出所有一级分类
+        List<CategoryEntity> categoryEntityList=categoryService.getLevel1Categorys();
+        model.addAttribute("categorys", categoryEntityList);
+        return "index";
+    }
+
+    @GetMapping("/index/json/catalog.json")
+    @ResponseBody
+    @ApiOperation("获取三级分类")
+    public Map<String,List<Catelog2Vo>> getCatalogJson() {
+        return categoryService.getCatalogJson();
+    }
+
+
+
+
+}
+

xjs-business/xjs-project-mall/mall-product/src/main/java/com/xjs/mall/product/service/CategoryService.java

@@ -2,8 +2,10 @@ package com.xjs.mall.product.service;
 
 import com.baomidou.mybatisplus.extension.service.IService;
 import com.xjs.mall.product.entity.CategoryEntity;
+import com.xjs.mall.product.vo.Catelog2Vo;
 
 import java.util.List;
+import java.util.Map;
 
 /**
  * 商品三级分类
@@ -38,5 +40,18 @@ public interface CategoryService extends IService<CategoryEntity> {
      * @param category 分类实体类
      */
     void updateCascade(CategoryEntity category);
+
+    /**
+     * 查询所有一级分类
+     * @return list
+     */
+    List<CategoryEntity> getLevel1Categorys();
+
+    /**
+     * 查出分类
+     * @return map
+     */
+    Map<String, List<Catelog2Vo>> getCatalogJson();
+
 }
 

xjs-business/xjs-project-mall/mall-product/src/main/java/com/xjs/mall/product/service/impl/CategoryServiceImpl.java

@@ -1,10 +1,12 @@
 package com.xjs.mall.product.service.impl;
 
+import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
 import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
 import com.xjs.mall.product.dao.CategoryDao;
 import com.xjs.mall.product.entity.CategoryEntity;
 import com.xjs.mall.product.service.CategoryBrandRelationService;
 import com.xjs.mall.product.service.CategoryService;
+import com.xjs.mall.product.vo.Catelog2Vo;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
@@ -25,7 +27,6 @@ public class CategoryServiceImpl extends ServiceImpl<CategoryDao, CategoryEntity
     private CategoryBrandRelationService categoryBrandRelationService;
 
 
-
     @Override
     public List<CategoryEntity> listWithTree() {
         //1、查询所有分类
@@ -67,6 +68,52 @@ public class CategoryServiceImpl extends ServiceImpl<CategoryDao, CategoryEntity
         categoryBrandRelationService.updateCategory(category.getCatId(), category.getName());
     }
 
+    @Override
+    public List<CategoryEntity> getLevel1Categorys() {
+        LambdaQueryWrapper<CategoryEntity> wrapper = new LambdaQueryWrapper<>();
+        wrapper.eq(CategoryEntity::getParentCid, 0);
+        return super.list(wrapper);
+    }
+
+    @Override
+    public Map<String, List<Catelog2Vo>> getCatalogJson() {
+        //查出所有1级分类
+        List<CategoryEntity> level1Categorys = getLevel1Categorys();
+
+        //封装数据
+        return level1Categorys.stream().collect(Collectors.toMap(
+                k -> k.getCatId().toString(),
+                v -> {
+                    //每一个的一级分类，查到这个一级分类的二级分类
+                    List<CategoryEntity> categoryEntities = super.baseMapper.selectList(new LambdaQueryWrapper<CategoryEntity>().eq(CategoryEntity::getParentCid, v.getCatId()));
+
+                    //封装上面的结果
+                    List<Catelog2Vo> catelog2Vos = null;
+                    if (categoryEntities != null) {
+                        catelog2Vos = categoryEntities.stream().map(l2 -> {
+                            Catelog2Vo catelog2Vo = new Catelog2Vo(v.getCatId().toString(), null, l2.getCatId().toString(), l2.getName());
+
+                            // 找当前二级分类的三级分类封装成vo
+                            List<CategoryEntity> level3Catelog = super.baseMapper.selectList(new LambdaQueryWrapper<CategoryEntity>().eq(CategoryEntity::getParentCid, l2.getCatId()));
+                            if (level3Catelog != null) {
+
+                                List<Catelog2Vo.Catelog3Vo> catelog3Vos = level3Catelog.stream().map(l3 -> {
+                                    //封装成指定格式
+                                    return new Catelog2Vo.Catelog3Vo(l2.getCatId().toString(), l3.getCatId().toString(), l3.getName());
+                                }).collect(Collectors.toList());
+
+                                catelog2Vo.setCatalog3List(catelog3Vos);
+                            }
+
+                            return catelog2Vo;
+                        }).collect(Collectors.toList());
+                    }
+
+                    return catelog2Vos;
+                }
+        ));
+    }
+
     //225,25,2
     private List<Long> findParentPath(Long catelogId, List<Long> paths) {
         //1、收集当前节点id

xjs-business/xjs-project-mall/mall-product/src/main/java/com/xjs/mall/product/vo/Catelog2Vo.java

@@ -0,0 +1,55 @@
+package com.xjs.mall.product.vo;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import java.util.List;
+
+/**
+ * 2级分类vo
+ *
+ * @author xiejs
+ * @since 2022-04-07
+ */
+@Data
+@NoArgsConstructor
+@AllArgsConstructor
+public class Catelog2Vo {
+    /**
+     * 1级
+     */
+    private String catalog1Id;
+
+    /**
+     * 3级子分类
+     */
+    private List<Catelog3Vo> catalog3List;
+
+
+    /**
+     * id
+     */
+    private String id;
+
+    /**
+     * 分类名称
+     */
+    private String name;
+
+    @Data
+    @NoArgsConstructor
+    @AllArgsConstructor
+    public static class Catelog3Vo{
+        /**
+         * 父分类，2级分类id
+         */
+        private String catalog2Id;
+
+        private String id;
+
+        private String name;
+
+    }
+
+}