递归查询栏目分类

src/main/java/io/office/modules/manage/controller/NewsColumnController.java

@@ -91,32 +91,7 @@ public class NewsColumnController {
         return R.ok();
     }
 
-    /**
-     * 文章管理新增的时候获取栏目选项
-     */
-    //@Login   //标识必须登录状态下才能请求此接口
-    @RequestMapping("/getNewsClassList")
-    public R getNewsClassList(){
-        QueryWrapper<NewsColumnEntity> newsColumnEntityQueryWrapper = new QueryWrapper<>();
-        //之前前端固定写死的几个
-        List list = new ArrayList();
-        list.add(5);
-        list.add(6);
-        list.add(7);
-        list.add(8);
-        list.add(9);
-        list.add(29);
-        list.add(32);
-        list.add(33);
-        list.add(38);
-        list.add(42);
-        newsColumnEntityQueryWrapper.in("columnid",list);
-        List<NewsColumnEntity> newsColumnEntities = newsColumnService.list(newsColumnEntityQueryWrapper);
-
-
-
-        return R.ok().put("data",newsColumnEntities);
-    }
+
 
 
 

src/main/java/io/office/modules/manage/controller/NewsclassController.java

+package io.office.modules.manage.controller;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.Map;
+
+import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
+import io.office.modules.manage.entity.NewsColumnEntity;
+import org.apache.shiro.authz.annotation.RequiresPermissions;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import io.office.modules.manage.entity.NewsclassEntity;
+import io.office.modules.manage.service.NewsclassService;
+import io.office.common.utils.PageUtils;
+import io.office.common.utils.R;
+
+
+
+/**
+ * ${comments}
+ *
+ * @author wudi
+ * @email 
+ * @date 2021-10-12 21:19:14
+ */
+@RestController
+@RequestMapping("/newsclass")
+public class NewsclassController {
+    @Autowired
+    private NewsclassService newsclassService;
+
+    /**
+     * 列表
+     */
+    @RequestMapping("/list")
+   // @RequiresPermissions("manage:newsclass:list")
+    public R list(@RequestParam Map<String, Object> params){
+        PageUtils page = newsclassService.queryPage(params);
+
+        return R.ok().put("page", page);
+    }
+
+
+    /**
+     * 信息
+     */
+    @RequestMapping("/info/{id}")
+  //  @RequiresPermissions("manage:newsclass:info")
+    public R info(@PathVariable("id") Integer id){
+		NewsclassEntity newsclass = newsclassService.getById(id);
+
+        return R.ok().put("newsclass", newsclass);
+    }
+
+    /**
+     * 保存
+     */
+    @RequestMapping("/save")
+   // @RequiresPermissions("manage:newsclass:save")
+    public R save(@RequestBody NewsclassEntity newsclass){
+		newsclassService.save(newsclass);
+
+        return R.ok();
+    }
+
+    /**
+     * 修改
+     */
+    @RequestMapping("/update")
+   // @RequiresPermissions("manage:newsclass:update")
+    public R update(@RequestBody NewsclassEntity newsclass){
+		newsclassService.updateById(newsclass);
+
+        return R.ok();
+    }
+
+    /**
+     * 删除
+     */
+    @RequestMapping("/delete")
+   // @RequiresPermissions("manage:newsclass:delete")
+    public R delete(@RequestBody Integer[] ids){
+		newsclassService.removeByIds(Arrays.asList(ids));
+
+        return R.ok();
+    }
+
+    /**
+     * 文章管理新增的时候获取栏目选项
+     */
+    //@Login   //标识必须登录状态下才能请求此接口
+    @RequestMapping("/getNewsClassList")
+    public R getNewsClassList(){
+        return R.ok().put("data",newsclassService.getNewsClassList());
+    }
+
+}

src/main/java/io/office/modules/manage/dao/NewsclassDao.java

+package io.office.modules.manage.dao;
+
+import io.office.modules.manage.entity.NewsclassEntity;
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import org.apache.ibatis.annotations.Mapper;
+
+/**
+ * ${comments}
+ * 
+ * @author wudi
+ * @email 
+ * @date 2021-10-12 21:19:14
+ */
+@Mapper
+public interface NewsclassDao extends BaseMapper<NewsclassEntity> {
+	
+}

src/main/java/io/office/modules/manage/entity/NewsclassEntity.java

+package io.office.modules.manage.entity;
+
+import com.baomidou.mybatisplus.annotation.TableId;
+import com.baomidou.mybatisplus.annotation.TableName;
+
+import java.io.Serializable;
+import java.util.Date;
+import lombok.Data;
+
+/**
+ * ${comments}
+ * 
+ * @author wudi
+ * @email 
+ * @date 2021-10-12 21:19:14
+ */
+@Data
+@TableName("newsClass")
+public class NewsclassEntity implements Serializable {
+	private static final long serialVersionUID = 1L;
+
+	/**
+	 * $column.comments
+	 */
+	@TableId
+	private Integer id;
+	/**
+	 * $column.comments
+	 */
+	private String name;
+	/**
+	 * $column.comments
+	 */
+	private Integer pId;
+
+}

src/main/java/io/office/modules/manage/service/NewsclassService.java

+package io.office.modules.manage.service;
+
+import com.baomidou.mybatisplus.extension.service.IService;
+import io.office.common.utils.PageUtils;
+import io.office.modules.manage.entity.NewsclassEntity;
+import io.office.modules.manage.vo.response.NewsclassEntityVo;
+
+import java.util.List;
+import java.util.Map;
+
+/**
+ * ${comments}
+ *
+ * @author wudi
+ * @email 
+ * @date 2021-10-12 21:19:14
+ */
+public interface NewsclassService extends IService<NewsclassEntity> {
+
+    PageUtils queryPage(Map<String, Object> params);
+
+
+    /**
+     * 获取树形结构
+     * @return
+     */
+    List<NewsclassEntityVo> getNewsClassList();
+}
+

src/main/java/io/office/modules/manage/service/impl/NewsclassServiceImpl.java

+package io.office.modules.manage.service.impl;
+
+import io.office.modules.manage.entity.NewsColumnEntity;
+import io.office.modules.manage.vo.response.NewsclassEntityVo;
+import org.apache.commons.collections.CollectionUtils;
+import org.apache.commons.lang.StringUtils;
+import org.springframework.beans.BeanUtils;
+import org.springframework.stereotype.Service;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
+import com.baomidou.mybatisplus.core.metadata.IPage;
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
+import io.office.common.utils.PageUtils;
+import io.office.common.utils.Query;
+
+import io.office.modules.manage.dao.NewsclassDao;
+import io.office.modules.manage.entity.NewsclassEntity;
+import io.office.modules.manage.service.NewsclassService;
+
+
+@Service("newsclassService")
+public class NewsclassServiceImpl extends ServiceImpl<NewsclassDao, NewsclassEntity> implements NewsclassService {
+
+    @Override
+    public PageUtils queryPage(Map<String, Object> params) {
+        IPage<NewsclassEntity> page = this.page(
+                new Query<NewsclassEntity>().getPage(params),
+                new QueryWrapper<NewsclassEntity>()
+        );
+
+        return new PageUtils(page);
+    }
+
+    @Override
+    public List<NewsclassEntityVo> getNewsClassList() {
+        List<NewsclassEntityVo> newsclassEntityVoList = new ArrayList<>();
+        List<Integer> list = new ArrayList();
+        list.add(5);
+        list.add(6);
+        list.add(7);
+        list.add(8);
+        list.add(9);
+        list.add(29);
+        list.add(32);
+        list.add(33);
+        list.add(38);
+        list.add(42);
+        QueryWrapper<NewsclassEntity> newsclassEntityQueryWrapper = new QueryWrapper<>();
+        newsclassEntityQueryWrapper.in("id",list);
+        List<NewsclassEntity> newsclassEntities = baseMapper.selectList(newsclassEntityQueryWrapper);
+        if(CollectionUtils.isNotEmpty(newsclassEntities)) {
+            //获取全部的栏目
+            QueryWrapper<NewsclassEntity> newsclassEntityQueryWrapperAll = new QueryWrapper<>();
+            List<NewsclassEntity> newsclassEntityAll = baseMapper.selectList(newsclassEntityQueryWrapperAll);
+            if(CollectionUtils.isNotEmpty(newsclassEntityAll)) {
+                for (NewsclassEntity newsclassEntity : newsclassEntities) {
+                    newsclassEntity.setName(newsclassEntity.getName().trim());
+                    NewsclassEntityVo newsclassEntityVo = new NewsclassEntityVo();
+                    BeanUtils.copyProperties(newsclassEntity,newsclassEntityVo);
+                    newsclassEntityVo.setChild(getChild(newsclassEntity.getId(),newsclassEntityAll));
+                    newsclassEntityVoList.add(newsclassEntityVo);
+                }
+            }
+        }
+        return newsclassEntityVoList;
+    }
+
+
+    /**
+     * 递归调用属性结构
+     */
+    private static List<NewsclassEntityVo> getChild(Integer id, List<NewsclassEntity> rootMenu) {
+        // 子菜单
+        List<NewsclassEntityVo> childList = new ArrayList<>();
+        for (NewsclassEntity newsclassEntity : rootMenu) {
+            // 遍历所有节点，将父菜单id与传过来的id比较
+            if (newsclassEntity.getPId()!=null) {
+                if (newsclassEntity.getPId().equals(id)) {
+                    NewsclassEntityVo newsclassEntityVo =
+                            new NewsclassEntityVo();
+                    newsclassEntityVo.setId(newsclassEntity.getId());
+                    newsclassEntityVo.setName(newsclassEntity.getName().trim());
+                    newsclassEntityVo.setPId(newsclassEntity.getPId());
+                    childList.add(newsclassEntityVo);
+                }
+            }
+        }
+        if(CollectionUtils.isNotEmpty(childList)) {
+            // 把子菜单的子菜单再循环一遍
+            for (NewsclassEntityVo children : childList) {// 没有url子菜单还有子菜单
+                List<NewsclassEntityVo> child = getChild(children.getId(), rootMenu);
+                if(CollectionUtils.isNotEmpty(child)){
+                    children.setChild(child);
+                }
+            }
+        }
+
+        // 递归退出条件
+        if (childList.size() == 0) {
+            return new ArrayList<>();
+        }
+        return childList;
+    }
+
+
+
+}
\ No newline at end of file

src/main/java/io/office/modules/manage/vo/response/NewsclassEntityVo.java

+package io.office.modules.manage.vo.response;
+
+import com.baomidou.mybatisplus.annotation.TableId;
+import com.baomidou.mybatisplus.annotation.TableName;
+import lombok.Data;
+
+import java.io.Serializable;
+import java.util.List;
+
+/**
+ * ${comments}
+ * 
+ * @author wudi
+ * @email 
+ * @date 2021-10-12 21:19:14
+ */
+@Data
+public class NewsclassEntityVo implements Serializable {
+	private static final long serialVersionUID = 1L;
+
+	/**
+	 * $column.comments
+	 */
+
+	private Integer id;
+	/**
+	 * $column.comments
+	 */
+	private String name;
+	/**
+	 * $column.comments
+	 */
+	private Integer pId;
+
+	private List<NewsclassEntityVo> child;
+
+}