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This commit is contained in:
许允枞 2025-02-28 14:22:13 +08:00
parent 8f2f872467
commit d7a461cc83
2 changed files with 79 additions and 3 deletions
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3
ruoyi-admin/src/main/java/com/ruoyi/cms/service/ICmsCategoryService.java
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@ -8,6 +8,7 @@ import com.ruoyi.cms.core.NewTreeSelect;
import com.ruoyi.cms.domain.CmsCategory;
import com.ruoyi.cms.domain.CmsContent;
import com.ruoyi.cms.domain.vo.CMSCategoryVo;
import com.ruoyi.cms.domain.vo.TreeVo;
import com.ruoyi.cms.query.CmsCategoryQuery;
import com.ruoyi.cms.query.CmsContentQuery;
import com.ruoyi.common.core.domain.TreeSelect;
@ -137,4 +138,6 @@ public interface ICmsCategoryService extends IService<CmsCategory>
* 获取某个栏目的子栏目
*/
List<CmsCategory> getCategoryIdByParentId(Long id);
List<TreeVo> getLeavesCategoryTree();
}

79
ruoyi-admin/src/main/java/com/ruoyi/cms/service/impl/CmsCategoryServiceImpl.java
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@ -1,8 +1,6 @@
package com.ruoyi.cms.service.impl;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.*;
import java.util.stream.Collectors;
import cn.hutool.core.bean.BeanUtil;
@ -14,6 +12,7 @@ import com.github.pagehelper.PageInfo;
import com.ruoyi.cms.core.NewTreeSelect;
import com.ruoyi.cms.domain.CmsContent;
import com.ruoyi.cms.domain.vo.CMSCategoryVo;
import com.ruoyi.cms.domain.vo.TreeVo;
import com.ruoyi.cms.mapper.CmsContentMapper;
import com.ruoyi.cms.query.CmsCategoryQuery;
import com.ruoyi.cms.query.CmsContentQuery;
@ -300,4 +299,78 @@ public class CmsCategoryServiceImpl extends ServiceImpl<CmsCategoryMapper, CmsCa
public List<CmsCategory> getCategoryIdByParentId(Long id) {
return baseMapper.selectList(new QueryWrapper<CmsCategory>().eq("parent_id", id).eq("is_disable", 0).eq("del_flag", 0).orderByAsc("category_sort"));
}
@Override
public List<TreeVo> getLeavesCategoryTree() {
List<CmsCategory> cmsCategories = baseMapper.selectList(new QueryWrapper<CmsCategory>());
List<CmsCategory> cmsCategories1 = buildCategoryTree(cmsCategories);
List<TreeVo> treeVos = new ArrayList<>();
for (CmsCategory cmsCategory : cmsCategories1) {
TreeVo treeVo = new TreeVo();
treeVo.setLabel(cmsCategory.getCategoryName());
treeVo.setValue(cmsCategory.getId().toString());
List<TreeVo> children = new ArrayList<>();
cmsCategory.getChildren().forEach(cmsCategory1 -> {
TreeVo treeVo1 = new TreeVo();
treeVo1.setLabel(cmsCategory1.getCategoryName());
treeVo1.setValue(cmsCategory1.getId().toString());
children.add(treeVo1);
});
treeVo.setChildren(children);
treeVos.add(treeVo);
}
return treeVos;
}
/**
* 将栏目列表转换为树形结构
*
* @param categoryList 栏目列表
* @return 树形结构的栏目列表
*/
public List<CmsCategory> buildCategoryTree(List<CmsCategory> categoryList) {
// 创建一个Map，用于存储栏目ID和栏目对象的映射关系
Map<Long, CmsCategory> categoryMap = new HashMap<>();
// 创建一个列表，用于存储根栏目（即没有父栏目的栏目）
List<CmsCategory> rootCategories = new ArrayList<>();
// 第一次遍历：将所有栏目放入Map中，并找到根栏目
for (CmsCategory category : categoryList) {
categoryMap.put(category.getId(), category);
if (category.getParentId() == null || category.getParentId() == 0) {
rootCategories.add(category);
}
}
// 第二次遍历：将子栏目放入对应的父栏目的children列表中
for (CmsCategory category : categoryList) {
if (category.getParentId() != null && category.getParentId() != 0) {
CmsCategory parentCategory = categoryMap.get(category.getParentId());
if (parentCategory != null) {
parentCategory.getChildren().add(category);
}
}
}
return rootCategories;
}
/**
* 递归打印树形结构的栏目
*
* @param categories 栏目列表
* @param level 当前层级
*/
private static void printCategoryTree(List<CmsCategory> categories, int level) {
for (CmsCategory category : categories) {
for (int i = 0; i < level; i++) {
System.out.print("--");
}
System.out.println(category.getCategoryName());
if (!category.getChildren().isEmpty()) {
printCategoryTree(category.getChildren(), level + 1);
}
}
}
}