获取tab树状结构

{
    "ret": 0,
    "msg": "success",
    "err": null,
    "data": [
        {
            "id": "bond",
            "parentId": "",
            "weight": 0,
            "name": "偏债",
            "children": [
                {
                    "id": "SD",
                    "parentId": "bond",
                    "weight": 0,
                    "name": "短债"
                },
                {
                    "id": "MD",
                    "parentId": "bond",
                    "weight": 0,
                    "name": "中长债"
                },
                {
                    "id": "DI",
                    "parentId": "bond",
                    "weight": 0,
                    "name": "债指"
                },
                {
                    "id": "OD",
                    "parentId": "bond",
                    "weight": 0,
                    "name": "海外债"
                },
                {
                    "id": "FIP",
                    "parentId": "bond",
                    "weight": 0,
                    "name": "固收+"
                },
                {
                    "id": "CVD",
                    "parentId": "bond",
                    "weight": 0,
                    "name": "可转债"
                }
            ]
        },
        {
            "id": "stock",
            "parentId": "",
            "weight": 0,
            "name": "偏股",
            "children": [
                {
                    "id": "STOCK_TYPE",
                    "parentId": "stock",
                    "weight": 0,
                    "name": "股票型"
                },
                {
                    "id": "STOCK_MIX",
                    "parentId": "stock",
                    "weight": 0,
                    "name": "偏股混合"
                }
            ]
        },
        {
            "id": "index",
            "parentId": "",
            "weight": 0,
            "name": "指数",
            "children": [
                {
                    "id": "BROAD_BASED_INDEX",
                    "parentId": "index",
                    "weight": 0,
                    "name": "宽基指数"
                },
                {
                    "id": "INDUSTRY_INDEX",
                    "parentId": "index",
                    "weight": 0,
                    "name": "行业指数"
                },
                {
                    "id": "STRATEGY_INDEX",
                    "parentId": "index",
                    "weight": 0,
                    "name": "策略指数"
                },
                {
                    "id": "HONG_KONG_INDEX",
                    "parentId": "index",
                    "weight": 0,
                    "name": "港股指数"
                },
                {
                    "id": "ENHANCE_INDEX",
                    "parentId": "index",
                    "weight": 0,
                    "name": "增强型"
                }
            ]
        }
    ],
    "ok": true
}