JDK 1.8+ Node 中pid 为 0 的是根节点 public class Node {private int id;private int pid;private String name;private List<Node> sub = new ArrayList<>();public Node(int id, int pid) {this.id = id;this.pid = pid;}public Node(int id, int pid, String name) {this(id, pid);this.name = name;}public int getId() {return id;}public void setId(int id) {this.id = id;}public int getPid() {return pid;}public void ...
package com.nnmzkj.common.dto;import lombok.Data;import java.io.Serializable;import java.util.ArrayList;import java.util.List;@Datapublic class TreeParamDto implements Serializable { private static final long serialVersionUID = -7692266106281926159L; private Long id; private String name; private Long parentId; private Long menuId; //冗余字段 private Integer isParent; private L...
话不多说直接上菜 1，实体类@Data public class SysTagConf implements java.io.Serializable{private String rowGuid; //唯一标识private String name; //标签名称private String opType; //授权类型 0全部 1目录清单 2实施清单 3办理项private String useLevel; //使用层级 0不限 2省级 3地市级 4区县级private float sort; //排序private String parentGuid; //父节点标识p...
工具类public class TreeUtil{/*** 解析树形数据* @param topId* @param entityList* @return* @author lidong* @date 2018年8月16日*/public static <E extends TreeEntity<E>> List<E> getTreeList(Integer topId, List<E> entityList) {List<E> resultList=new ArrayList<>();//获取顶层元素集合Integer parentId;for (E entity : entityList) {parentId=entity.getParentId();if(parentId==null||topId.equals(parentId)){resu...
1、准备表结构及对应的表数据a、表结构：create table TB_TREE ( CID NUMBER not null, CNAME VARCHAR2(50), PID NUMBER //父节点 )b、表数据：insert into tb_tree (CID, CNAME, PID) values (1, 中国, 0); insert into tb_tree (CID, CNAME, PID) values (2, 北京市, 1); insert into tb_tree (CID, CNAME, PID) values (3, 广东省, 1); insert into tb_tree (CID, CNAME, PID) values (4, 上海市, 1); insert into tb_tree (CID...