字符窜转节点并打印节点树或转JSON

我司目前有一个这样子需求：数据库存储的是一条条记录，有一列是存储的目录结构的字符窜，如下：

xxxx公司/yy网区/zz电局/变电/bcdef/220kV石西站/主变区域/#2主变间隔/#2主变/#2主变

要把这些转化为JSON传给前端，下面是一些

package com.xx.yyyy;

import java.util.ArrayList;
import java.util.List;

/**
 * <p> Test </p>
 *
 * @author Aion.Liu
 * @version v1.0.0
 * @since 2020/6/23 2:26 下午
 */
public class Test {

    public void parseString() {

        NodTree nodeTree = new NodTree();
        nodeTree.setNodeValue("root");

        String str0 = "XX电网公司/XX网区/XX供电局/变电/aa巡维班/220kV111/主变区域/#2主变间隔/#2主变/#2主变";
        String str1 = "xx电网公司/XX网区/XX供电局/变电/bb巡维班/220kV222/主变区域/#1主变间隔/#1主变压器/#1主变";
        ... 43         String str23 = "XX电网公司/XX网区/XX供电局/变电/cc巡维班/220kV333/主变区域/#1主变间隔/#1主变/#1主变";
        String str24 = "XX电网公司/XX网区/XX供电局/变电/dd巡维班/220kV333/主变区域/#2主变间隔/#2主变/#2主变";

        String str25 = "YY电网公司/XX网区/XX供电局/变电/ee巡维班/220kV444/主变区域/#2主变间隔/#2主变/#2主变";

        List<String> stringList = new ArrayList<>();
        stringList.add(str0);
        stringList.add(str1);
        ... 73         stringList.add(str24);
        stringList.add(str25);

        for (String str : stringList) {
            addNode(nodeTree, str.split("/"));
        }

//        print(nodeTree, 0);

        nodeTree.toJson(nodeTree);

        System.out.println(nodeTree.getBuffer());

    }




    public void addNode(NodTree nodeTree, String[] strArr) {
        NodTree creatNodeTree = null;
        NodTree queryNode = null;
        NodTree parentNode = nodeTree;
        for (String str : strArr) {
            queryNode = parentNode.hasSubNode(str);
            if (null == queryNode) {
                creatNodeTree = new NodTree();
                creatNodeTree.setNodeValue(str);
                parentNode.addSunNode(creatNodeTree);

                parentNode = creatNodeTree;
            } else {
                parentNode = queryNode;
            }
        }
    }



    class NodTree {

        String nodeValue = null;

        List<NodTree> nodeList = new ArrayList<NodTree>();

        StringBuffer buffer = new StringBuffer();

        public String getNodeValue() {
            return nodeValue;
        }

        public void setNodeValue(String nodeValue) {
            this.nodeValue = nodeValue;
        }

        public List<NodTree> getNodeList() {
            return nodeList;
        }

        public void setNodeList(List<NodTree> nodeList) {
            this.nodeList = nodeList;
        }

        public void addSunNode(NodTree nodeTree) {
            nodeList.add(nodeTree);
        }

        public StringBuffer getBuffer() {
            return buffer;
        }

        public void setBuffer(StringBuffer buffer) {
            this.buffer = buffer;
        }

        public NodTree hasSubNode(String str) {
            if (null != nodeList && !nodeList.isEmpty()) {
                for (NodTree nodeTree : nodeList) {
                    if (nodeTree.nodeValue.equals(str)) {
                        return nodeTree;
                    }
                }
            }
            return null;
        }

        /**
         * 节点树打印
         * @param nodeTree 节点树
         * @param w
         */
        public void print(NodTree nodeTree, int w) {
            for (int i = 0; i < w; i++) {
                System.out.print(" ");
            }
            System.out.println("|-" + nodeTree.nodeValue);
            for (NodTree tree : nodeTree.getNodeList()) {
                print(tree, w + 1);
            }
        }


        /**
         * 节点树 转 JSON
         * @param nodeTree 节点树
         */
        public void toJson(NodTree nodeTree) {
            buffer.append("{"data":" + """ + nodeTree.getNodeValue() + """);
            if (nodeTree.getNodeList().size() == 0) {
                buffer.append(","children":null}");
                return;
            } else {
                buffer.append(", "children":[");
                for (NodTree n : nodeTree.getNodeList()) {
                    toJson(n);
                    buffer.append(",");
                }
                buffer = buffer.deleteCharAt(buffer.lastIndexOf(","));
                buffer.append("]}");
            }
        }
    }


    public static void main(String[] args) {
        Test t = new Test();
        t.parseString();
    }
}

 

执行结果转换查看:

理解数据格式后，才能更好的转换成为json提供给前端使用。