package com.mes.menu.service.impl;
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import cn.hutool.json.JSONUtil;
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import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
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import com.mes.menu.entity.SysMenu;
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import com.mes.menu.mapper.SysMenuMapper;
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import com.mes.menu.service.SysMenuService;
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import lombok.extern.slf4j.Slf4j;
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import org.springframework.stereotype.Service;
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import java.util.List;
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import java.util.stream.Collectors;
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/**
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* <p>
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* 菜单表 服务实现类
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* </p>
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*
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* @author zhoush
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* @since 2024-04-11
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*/
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@Service
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@Slf4j
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public class SysMenuServiceImpl extends ServiceImpl<SysMenuMapper, SysMenu> implements SysMenuService {
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@Override
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public List<SysMenu> getMenuTree() {
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List<SysMenu> menuList = this.baseMapper.selectList(null);
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return create(menuList);
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}
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/**
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* 将数据库中查询出来的list集合传入此方法即可获得排成树形结构的list集合
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*
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* @param lists
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* @return
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*/
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public List<SysMenu> create(List<SysMenu> lists) {
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List<SysMenu> deptTreeList = lists.stream()
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.filter(item -> item.getParentId() == 0)
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.map(item -> {
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item.setChildren(getChildren(item, lists));
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return item;
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}).collect(Collectors.toList());
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return deptTreeList;
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}
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/**
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* 此方法将被递归调用
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*
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* @param menu
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* @param menus
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* @return
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*/
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private List<SysMenu> getChildren(SysMenu menu, List<SysMenu> menus) {
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List<SysMenu> res = menus.stream()
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.filter(item -> item.getParentId().equals(menu.getId()))
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.map(item -> {
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item.setChildren(getChildren(item, menus));
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return item;
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}).collect(Collectors.toList());
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log.info("菜单树:{}", JSONUtil.toJsonStr(res));
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return res;
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}
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}
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