update 基于 hutool 封装树构建工具 重构部门与菜单树结构返回

ruoyi-admin/src/main/java/com/ruoyi/web/controller/system/SysDeptController.java

@@ -1,11 +1,11 @@
 package com.ruoyi.web.controller.system;
 
+import cn.hutool.core.lang.tree.Tree;
 import cn.hutool.core.util.ArrayUtil;
 import com.ruoyi.common.annotation.Log;
 import com.ruoyi.common.constant.UserConstants;
 import com.ruoyi.common.core.controller.BaseController;
 import com.ruoyi.common.core.domain.AjaxResult;
-import com.ruoyi.common.core.domain.TreeSelect;
 import com.ruoyi.common.core.domain.entity.SysDept;
 import com.ruoyi.common.enums.BusinessType;
 import com.ruoyi.common.utils.StringUtils;
@@ -76,7 +76,7 @@ public class SysDeptController extends BaseController {
      */
     @ApiOperation("获取部门下拉树列表")
     @GetMapping("/treeselect")
-    public AjaxResult<List<TreeSelect>> treeselect(SysDept dept) {
+    public AjaxResult<List<Tree<Long>>> treeselect(SysDept dept) {
         List<SysDept> depts = deptService.selectDeptList(dept);
         return AjaxResult.success(deptService.buildDeptTreeSelect(depts));
     }

ruoyi-admin/src/main/java/com/ruoyi/web/controller/system/SysMenuController.java

@@ -1,10 +1,10 @@
 package com.ruoyi.web.controller.system;
 
+import cn.hutool.core.lang.tree.Tree;
 import com.ruoyi.common.annotation.Log;
 import com.ruoyi.common.constant.UserConstants;
 import com.ruoyi.common.core.controller.BaseController;
 import com.ruoyi.common.core.domain.AjaxResult;
-import com.ruoyi.common.core.domain.TreeSelect;
 import com.ruoyi.common.core.domain.entity.SysMenu;
 import com.ruoyi.common.enums.BusinessType;
 import com.ruoyi.common.utils.StringUtils;
@@ -61,7 +61,7 @@ public class SysMenuController extends BaseController {
      */
     @ApiOperation("获取菜单下拉树列表")
     @GetMapping("/treeselect")
-    public AjaxResult<List<TreeSelect>> treeselect(SysMenu menu) {
+    public AjaxResult<List<Tree<Long>>> treeselect(SysMenu menu) {
         List<SysMenu> menus = menuService.selectMenuList(menu, getUserId());
         return AjaxResult.success(menuService.buildMenuTreeSelect(menus));
     }

ruoyi-common/src/main/java/com/ruoyi/common/core/domain/TreeSelect.java

@@ -1,67 +0,0 @@
-package com.ruoyi.common.core.domain;
-
-import com.fasterxml.jackson.annotation.JsonInclude;
-import com.ruoyi.common.core.domain.entity.SysDept;
-import com.ruoyi.common.core.domain.entity.SysMenu;
-import io.swagger.annotations.ApiModel;
-import io.swagger.annotations.ApiModelProperty;
-import lombok.Data;
-import lombok.NoArgsConstructor;
-import lombok.experimental.Accessors;
-
-import java.io.Serializable;
-import java.util.List;
-import java.util.stream.Collectors;
-
-/**
- * Treeselect树结构实体类
- *
- * @author Lion Li
- */
-
-@Data
-@NoArgsConstructor
-@Accessors(chain = true)
-@ApiModel("树结构实体类")
-public class TreeSelect implements Serializable {
-
-    private static final long serialVersionUID = 1L;
-
-    /**
-     * 节点ID
-     */
-    @ApiModelProperty(value = "节点ID")
-    private Long id;
-
-    /**
-     * 节点名称
-     */
-    @ApiModelProperty(value = "节点名称")
-    private String label;
-
-    /**
-     * 子节点
-     */
-    @ApiModelProperty(value = "子节点")
-    @JsonInclude(JsonInclude.Include.NON_EMPTY)
-    private List<TreeSelect> children;
-
-    public TreeSelect(SysDept dept) {
-        this.id = dept.getDeptId();
-        this.label = dept.getDeptName();
-        this.children = dept.getChildren()
-                .stream()
-                .map(d -> new TreeSelect((SysDept) d))
-                .collect(Collectors.toList());
-    }
-
-    public TreeSelect(SysMenu menu) {
-        this.id = menu.getMenuId();
-        this.label = menu.getMenuName();
-        this.children = menu.getChildren()
-                .stream()
-                .map(d -> new TreeSelect((SysMenu) d))
-                .collect(Collectors.toList());
-    }
-
-}

ruoyi-common/src/main/java/com/ruoyi/common/utils/TreeBuildUtils.java

@@ -0,0 +1,31 @@
+package com.ruoyi.common.utils;
+
+import cn.hutool.core.lang.tree.Tree;
+import cn.hutool.core.lang.tree.TreeNodeConfig;
+import cn.hutool.core.lang.tree.TreeUtil;
+import cn.hutool.core.lang.tree.parser.NodeParser;
+
+import java.util.List;
+
+/**
+ * 扩展 hutool TreeUtil 封装系统树构建
+ *
+ * @author Lion Li
+ */
+public class TreeBuildUtils extends TreeUtil {
+
+    /**
+     * 根据前端定制差异化字段
+     */
+    public static final TreeNodeConfig DEFAULT_CONFIG = TreeNodeConfig.DEFAULT_CONFIG.setNameKey("label");
+
+    /**
+     * 默认树父节点id
+     */
+    public static final Long DEFAULT_PARENT_ID = 0L;
+
+    public static <T> List<Tree<Long>> build(List<T> list, NodeParser<T, Long> nodeParser) {
+        return TreeUtil.build(list, DEFAULT_PARENT_ID, DEFAULT_CONFIG, nodeParser);
+    }
+
+}

ruoyi-system/src/main/java/com/ruoyi/system/service/ISysDeptService.java

@@ -1,7 +1,7 @@
 package com.ruoyi.system.service;
 
+import cn.hutool.core.lang.tree.Tree;
 import com.baomidou.mybatisplus.extension.service.IService;
-import com.ruoyi.common.core.domain.TreeSelect;
 import com.ruoyi.common.core.domain.entity.SysDept;
 
 import java.util.List;
@@ -20,21 +20,13 @@ public interface ISysDeptService extends IService<SysDept> {
      */
     List<SysDept> selectDeptList(SysDept dept);
 
-    /**
-     * 构建前端所需要树结构
-     *
-     * @param depts 部门列表
-     * @return 树结构列表
-     */
-    List<SysDept> buildDeptTree(List<SysDept> depts);
-
     /**
      * 构建前端所需要下拉树结构
      *
      * @param depts 部门列表
      * @return 下拉树结构列表
      */
-    List<TreeSelect> buildDeptTreeSelect(List<SysDept> depts);
+    List<Tree<Long>> buildDeptTreeSelect(List<SysDept> depts);
 
     /**
      * 根据角色ID查询部门树信息

ruoyi-system/src/main/java/com/ruoyi/system/service/ISysMenuService.java

@@ -1,7 +1,7 @@
 package com.ruoyi.system.service;
 
+import cn.hutool.core.lang.tree.Tree;
 import com.baomidou.mybatisplus.extension.service.IService;
-import com.ruoyi.common.core.domain.TreeSelect;
 import com.ruoyi.common.core.domain.entity.SysMenu;
 import com.ruoyi.system.domain.vo.RouterVo;
 
@@ -64,21 +64,13 @@ public interface ISysMenuService extends IService<SysMenu> {
      */
     List<RouterVo> buildMenus(List<SysMenu> menus);
 
-    /**
-     * 构建前端所需要树结构
-     *
-     * @param menus 菜单列表
-     * @return 树结构列表
-     */
-    List<SysMenu> buildMenuTree(List<SysMenu> menus);
-
     /**
      * 构建前端所需要下拉树结构
      *
      * @param menus 菜单列表
      * @return 下拉树结构列表
      */
-    List<TreeSelect> buildMenuTreeSelect(List<SysMenu> menus);
+    List<Tree<Long>> buildMenuTreeSelect(List<SysMenu> menus);
 
     /**
      * 根据菜单ID查询信息

ruoyi-system/src/main/java/com/ruoyi/system/service/impl/SysDeptServiceImpl.java

@@ -1,11 +1,11 @@
 package com.ruoyi.system.service.impl;
 
 import cn.hutool.core.convert.Convert;
+import cn.hutool.core.lang.tree.Tree;
 import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
 import com.baomidou.mybatisplus.core.conditions.update.LambdaUpdateWrapper;
 import com.ruoyi.common.annotation.DataScope;
 import com.ruoyi.common.constant.UserConstants;
-import com.ruoyi.common.core.domain.TreeSelect;
 import com.ruoyi.common.core.domain.entity.SysDept;
 import com.ruoyi.common.core.domain.entity.SysRole;
 import com.ruoyi.common.core.domain.entity.SysUser;
@@ -13,6 +13,7 @@ import com.ruoyi.common.core.mybatisplus.core.ServicePlusImpl;
 import com.ruoyi.common.exception.ServiceException;
 import com.ruoyi.common.utils.SecurityUtils;
 import com.ruoyi.common.utils.StringUtils;
+import com.ruoyi.common.utils.TreeBuildUtils;
 import com.ruoyi.common.utils.spring.SpringUtils;
 import com.ruoyi.system.mapper.SysDeptMapper;
 import com.ruoyi.system.mapper.SysRoleMapper;
@@ -21,10 +22,8 @@ import com.ruoyi.system.service.ISysDeptService;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
-import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
-import java.util.stream.Collectors;
 
 /**
  * 部门管理 服务实现
@@ -52,32 +51,6 @@ public class SysDeptServiceImpl extends ServicePlusImpl<SysDeptMapper, SysDept,
         return baseMapper.selectDeptList(dept);
     }
 
-    /**
-     * 构建前端所需要树结构
-     *
-     * @param depts 部门列表
-     * @return 树结构列表
-     */
-    @Override
-    public List<SysDept> buildDeptTree(List<SysDept> depts) {
-        List<SysDept> returnList = new ArrayList<SysDept>();
-        List<Long> tempList = new ArrayList<Long>();
-        for (SysDept dept : depts) {
-            tempList.add(dept.getDeptId());
-        }
-        for (SysDept dept : depts) {
-            // 如果是顶级节点, 遍历该父节点的所有子节点
-            if (!tempList.contains(dept.getParentId())) {
-                recursionFn(depts, dept);
-                returnList.add(dept);
-            }
-        }
-        if (returnList.isEmpty()) {
-            returnList = depts;
-        }
-        return returnList;
-    }
-
     /**
      * 构建前端所需要下拉树结构
      *
@@ -85,9 +58,12 @@ public class SysDeptServiceImpl extends ServicePlusImpl<SysDeptMapper, SysDept,
      * @return 下拉树结构列表
      */
     @Override
-    public List<TreeSelect> buildDeptTreeSelect(List<SysDept> depts) {
+    public List<Tree<Long>> buildDeptTreeSelect(List<SysDept> depts) {
-        List<SysDept> deptTrees = buildDeptTree(depts);
+        return TreeBuildUtils.build(depts, (dept, tree) ->
-        return deptTrees.stream().map(TreeSelect::new).collect(Collectors.toList());
+            tree.setId(dept.getDeptId())
+                .setParentId(dept.getParentId())
+                .setName(dept.getDeptName())
+                .setWeight(dept.getOrderNum()));
     }
 
     /**
@@ -273,37 +249,4 @@ public class SysDeptServiceImpl extends ServicePlusImpl<SysDeptMapper, SysDept,
         return baseMapper.deleteById(deptId);
     }
 
-    /**
-     * 递归列表
-     */
-    private void recursionFn(List<SysDept> list, SysDept t) {
-        // 得到子节点列表
-        List<SysDept> childList = getChildList(list, t);
-        t.setChildren(childList);
-        for (SysDept tChild : childList) {
-            if (hasChild(list, tChild)) {
-                recursionFn(list, tChild);
-            }
-        }
-    }
-
-    /**
-     * 得到子节点列表
-     */
-    private List<SysDept> getChildList(List<SysDept> list, SysDept t) {
-        List<SysDept> tlist = new ArrayList<SysDept>();
-        for (SysDept n : list) {
-            if (StringUtils.isNotNull(n.getParentId()) && n.getParentId().longValue() == t.getDeptId().longValue()) {
-                tlist.add(n);
-            }
-        }
-        return tlist;
-    }
-
-    /**
-     * 判断是否有子节点
-     */
-    private boolean hasChild(List<SysDept> list, SysDept t) {
-        return getChildList(list, t).size() > 0;
-    }
 }

ruoyi-system/src/main/java/com/ruoyi/system/service/impl/SysMenuServiceImpl.java

@@ -1,15 +1,16 @@
 package com.ruoyi.system.service.impl;
 
+import cn.hutool.core.lang.tree.Tree;
 import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
 import com.ruoyi.common.constant.Constants;
 import com.ruoyi.common.constant.UserConstants;
-import com.ruoyi.common.core.domain.TreeSelect;
 import com.ruoyi.common.core.domain.entity.SysMenu;
 import com.ruoyi.common.core.domain.entity.SysRole;
 import com.ruoyi.common.core.domain.entity.SysUser;
 import com.ruoyi.common.core.mybatisplus.core.ServicePlusImpl;
 import com.ruoyi.common.utils.SecurityUtils;
 import com.ruoyi.common.utils.StringUtils;
+import com.ruoyi.common.utils.TreeBuildUtils;
 import com.ruoyi.system.domain.SysRoleMenu;
 import com.ruoyi.system.domain.vo.MetaVo;
 import com.ruoyi.system.domain.vo.RouterVo;
@@ -21,7 +22,6 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
 import java.util.*;
-import java.util.stream.Collectors;
 
 /**
  * 菜单 业务层处理
@@ -170,32 +170,6 @@ public class SysMenuServiceImpl extends ServicePlusImpl<SysMenuMapper, SysMenu,
         return routers;
     }
 
-    /**
-     * 构建前端所需要树结构
-     *
-     * @param menus 菜单列表
-     * @return 树结构列表
-     */
-    @Override
-    public List<SysMenu> buildMenuTree(List<SysMenu> menus) {
-        List<SysMenu> returnList = new ArrayList<SysMenu>();
-        List<Long> tempList = new ArrayList<Long>();
-        for (SysMenu dept : menus) {
-            tempList.add(dept.getMenuId());
-        }
-        for (SysMenu menu : menus) {
-            // 如果是顶级节点, 遍历该父节点的所有子节点
-            if (!tempList.contains(menu.getParentId())) {
-                recursionFn(menus, menu);
-                returnList.add(menu);
-            }
-        }
-        if (returnList.isEmpty()) {
-            returnList = menus;
-        }
-        return returnList;
-    }
-
     /**
      * 构建前端所需要下拉树结构
      *
@@ -203,9 +177,12 @@ public class SysMenuServiceImpl extends ServicePlusImpl<SysMenuMapper, SysMenu,
      * @return 下拉树结构列表
      */
     @Override
-    public List<TreeSelect> buildMenuTreeSelect(List<SysMenu> menus) {
+    public List<Tree<Long>> buildMenuTreeSelect(List<SysMenu> menus) {
-        List<SysMenu> menuTrees = buildMenuTree(menus);
+        return TreeBuildUtils.build(menus, (menu, tree) ->
-        return menuTrees.stream().map(TreeSelect::new).collect(Collectors.toList());
+            tree.setId(menu.getMenuId())
+                .setParentId(menu.getParentId())
+                .setName(menu.getMenuName())
+                .setWeight(menu.getOrderNum()));
     }
 
     /**