通讯录树状查询

最新推荐文章于 2022-08-03 13:48:50 发布

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最新推荐文章于 2022-08-03 13:48:50 发布

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文章标签： json java 开发语言

本文链接：https://blog.youkuaiyun.com/weixin_54363295/article/details/123373396

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这篇博客探讨了如何在Java中实现通讯录的树状查询，首先从根节点开始递归添加子节点。之后，作者进一步介绍了如何集成模糊查询功能，利用VagueName字段进行以模糊名称为根节点的树状查询，从而提供更灵活的搜索体验。

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逻辑是一开始查出根节点，然后一层层循环添加子节点

package com.service.system;

import com.alibaba.fastjson.JSONObject;
import com.dao.mybatis.CompanyMybatisDao;
import com.entity.database.CompanyEntity;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

@Service
public class CompanyService {

    @Resource
    private CompanyMybatisDao companyMybatisDao;

    public JSONObject selectAll(CompanyEntity companyEntity) {
        JSONObject json = new JSONObject();

        /*查询出所有的数据*/
        List<CompanyEntity> treeData = companyMybatisDao.selectCompanyTrees(companyEntity);
        var departmentDtos = new ArrayList<CompanyEntity>();

        var departmentDtos2 = new ArrayList<CompanyEntity>();
        for (var t : treeData) {
            t.setChildren(childrenDepartTree(companyMybatisDao, t.getId()));
            departmentDtos.add(t);
        }
        /*进行树形结构封装*//*id  指的最大的id   0	滨投	company	 指这条数据*/
        if (companyEntity.getVagueName() != null) {
            List<CompanyEntity> companyEntities = childrenDepartTree2(departmentDtos, companyEntity.getVagueName(),departmentDtos2);
            json.put("data", companyEntities);

        } else {
            json.put("data", departmentDtos);
        }
        json.put("msg", "查询部门成功");
        json.put("code", 0);
        return json;

    }


    public static List<CompanyEntity> childrenDepartTree(CompanyMybatisDao companyMybatisDao, Integer id) {
        var param = new CompanyEntity();
        param.setParentId(id);
        var entity = companyMybatisDao.selectCompanyTrees(param);
        for (var e : entity) {
            e.setChildren(childrenDepartTree(companyMybatisDao, e.getId()));
        }
        return entity;
    }

    public static List<CompanyEntity> childrenDepartTree2(List<CompanyEntity> departmentDtos, String vagueName,List<CompanyEntity> departmentDtos2) {
        int i = 0;

        for (CompanyEntity a : departmentDtos
        ) {
            int i1 = a.getName().indexOf(vagueName);
            if (i1 == -1 &&a.getChildren()!=null) {
                childrenDepartTree2(a.getChildren(),vagueName,departmentDtos2);
            }else {
                departmentDtos2.add(a);
            }
        }
        return departmentDtos2;
    }


}