将特殊字符串集合以json树形输出

比眉伴天荒 2024-04-01 14:52 53阅读 0赞

## 前提说明 ##

想要将特殊字符串数组以树形输出，并说明叶子结点有多少个相同的叶子结点  
如，想把下面的特殊字符串数组以json数进行输出

ArrayList<String> listOfPaths = new ArrayList<String>();
    listOfPaths.add("主要材料-通风口-cc");
    listOfPaths.add("主要材料-压路机");
    listOfPaths.add("主要材料-加药装置");
    listOfPaths.add("主要材料-加药装置1");
    listOfPaths.add("主要材料-钢铁");
    listOfPaths.add("主要材料-钢铁");
    listOfPaths.add("主要材料-钢铁-锌铜板1");
    listOfPaths.add("主要材料-钢铁-锌铜板1");
    listOfPaths.add("主要材料-钢铁-锌铜板");
    
    listOfPaths.add("工程设备-钢铁-锌铜板");
    listOfPaths.add("工程设备-钢铁-锌铜板");
    listOfPaths.add("工程设备-钢铁-锌铜板");
    
    listOfPaths.add("工程设备1-钢铁-锌铜板2");
    listOfPaths.add("工程设备1-钢铁-锌铜板1");

最终可以出现下面的json结构

[
        {
       
        
            "id": "主要材料",
            "parentId": "",
            "children": [
                {
       
        
                    "id": "主要材料-通风口",
                    "parentId": "主要材料",
                    "children": [
                        {
       
        
                            "id": "主要材料-通风口-cc",
                            "parentId": "主要材料-通风口",
                            "children": [],
                            "total": 1
                        }
                    ],
                    "total": 1
                },
                {
       
        
                    "id": "主要材料-压路机",
                    "parentId": "主要材料",
                    "children": [],
                    "total": 1
                },
                {
       
        
                    "id": "主要材料-加药装置",
                    "parentId": "主要材料",
                    "children": [],
                    "total": 1
                },
                {
       
        
                    "id": "主要材料-加药装置1",
                    "parentId": "主要材料",
                    "children": [],
                    "total": 1
                },
                {
       
        
                    "id": "主要材料-钢铁",
                    "parentId": "主要材料",
                    "children": [
                        {
       
        
                            "id": "主要材料-钢铁-锌铜板1",
                            "parentId": "主要材料-钢铁",
                            "children": [],
                            "total": 2
                        },
                        {
       
        
                            "id": "主要材料-钢铁-锌铜板",
                            "parentId": "主要材料-钢铁",
                            "children": [],
                            "total": 1
                        }
                    ],
                    "total": 5
                }
            ],
            "total": 9
        },
        {
       
        
            "id": "工程设备",
            "parentId": "",
            "children": [
                {
       
        
                    "id": "工程设备-钢铁",
                    "parentId": "工程设备",
                    "children": [
                        {
       
        
                            "id": "工程设备-钢铁-锌铜板",
                            "parentId": "工程设备-钢铁",
                            "children": [],
                            "total": 3
                        }
                    ],
                    "total": 3
                }
            ],
            "total": 3
        },
        {
       
        
            "id": "工程设备1",
            "parentId": "",
            "children": [
                {
       
        
                    "id": "工程设备1-钢铁",
                    "parentId": "工程设备1",
                    "children": [
                        {
       
        
                            "id": "工程设备1-钢铁-锌铜板2",
                            "parentId": "工程设备1-钢铁",
                            "children": [],
                            "total": 1
                        },
                        {
       
        
                            "id": "工程设备1-钢铁-锌铜板1",