JavaList集合根据ParentId递归【无限套娃】
2024-04-12 21:44:49
关键代码：
public List<Map<String,Object>> getChild(String pid , List<Menu> allList){List<Map<String,Object>> childList = new ArrayList<>();//用于保存子节点的listfor(Menu ms : allList){if(pid.equals(ms.getParentId())){//判断传入的父id是否等于自身的，如果是，就说明自己是子节点Map<String,Object> map = new HashMap<>();map.put("id",ms.getId());map.put("pId", ms.getParentId());map.put("mate",ms.getName());map.put("hasChildren",false);map.put("ChildNodes", new Object[]{});childList.add(map); //加入子节点}}for(Map<String,Object> map : childList){//遍历子节点，继续递归判断每个子节点是否还含有子节点List<Map<String,Object>> tList = getChild(String.valueOf(map.get("id")) , allList);if(!tList.isEmpty()){map.put("hasChildren",true);}map.put("ChildNodes" , tList);}return childList;}代码调用：
@ResponseBody@RequestMapping(value = "authMenu", method = RequestMethod.GET)public List<Map<String, Object>> authMenu(String roleId) {List<Menu> list = menuService.findMenuByRoleId(roleId);List<Map<String, Object>> child = getChild("0",list);return child;}数据结构：
数据结果：
Object{...},{"ChildNodes":[{"ChildNodes":[],"hasChildren":false,"name":"技术资料","pId":"3fac53a94abd4d8786cee4fb09b59bb1","id":"6854f03596724c589e22d6e0ede3054e"}],"hasChildren":true,"name":"接触网","pId":"d26688a8498045c0ac4036a4231f6a31","id":"3fac53a94abd4d8786cee4fb09b59bb1"},Object{...},{"ChildNodes":[],"hasChildren":false,"name":"AT所","pId":"d26688a8498045c0ac4036a4231f6a31","id":"1569ce89bd454485b127b5a14fd0941a"},{"ChildNodes":[],"hasChildren":false,"name":"分区所","pId":"d26688a8498045c0ac4036a4231f6a31","id":"6acbab2f46e544a48596df8ae1b409b2"},{"ChildNodes":[{"ChildNodes":[{"ChildNodes":[{"ChildNodes":[],"hasChildren":false,"name":"断链","pId":"07f092f3578247db8cba2feb6050d8ae","id":"64d3f7c7073148a8bb167a77daf01b24"},{"ChildNodes":[],"hasChildren":false,"name":"曲线要素","pId":"07f092f3578247db8cba2feb6050d8ae","id":"ae8b1bebfbbc41a194688cf21499cb23"},{"ChildNodes":[],"hasChildren":false,"name":"直曲","pId":"07f092f3578247db8cba2feb6050d8ae","id":"8deb7242334349b58049e66335a5b408"},{"ChildNodes":[],"hasChildren":false,"name":"竖曲线要素","pId":"07f092f3578247db8cba2feb6050d8ae","id":"f38f88250ab54f5f8f442c66ed04a291"},{"ChildNodes":[],"hasChildren":false,"name":"竖曲线","pId":"07f092f3578247db8cba2feb6050d8ae","id":"111e6ffb22ab440ba17ac7c74a5503a6"},{"ChildNodes":[],"hasChildren":false,"name":"线间距","pId":"07f092f3578247db8cba2feb6050d8ae","id":"a2a189a467ac4ba8a185ad3827296a4d"},{"ChildNodes":[],"hasChildren":false,"name":"特殊处所图例","pId":"07f092f3578247db8cba2feb6050d8ae","id":"f036d0c616db4cd5b4f5e599c666dfda"},{"ChildNodes":[],"hasChildren":false,"name":"平面布置","pId":"07f092f3578247db8cba2feb6050d8ae","id":"3ddd21216c214de78949668472c6f8d9"}],"hasChildren":true,"name":"基础数据","pId":"a67ae46fe71646159e76cbe53764c4c6","id":"07f092f3578247db8cba2feb6050d8ae"},{"ChildNodes":[],"hasChildren":false,"name":"线路放样","pId":"a67ae46fe71646159e76cbe53764c4c6","id":"77a2b8e7dee44c0f8d4154a68b24824e"}],"hasChildren":true,"name":"基础数据测量系统","pId":"e1ccaf5a237244eda9a87bfbe335a865","id":"a67ae46fe71646159e76cbe53764c4c6"},{"ChildNodes":[],"hasChildren":false,"name":"一杆一档工程数据","pId":"e1ccaf5a237244eda9a87bfbe335a865","id":"49b03a6b78624e62a32682cad82b653a"},{"ChildNodes":[{"ChildNodes":[],"hasChildren":false,"name":"供电段","pId":"7f9efd8cbe734f47b9897486cb8dfb77","id":"206a688026324bcf9e68093394c54bdb"},{"ChildNodes":[],"hasChildren":false,"name":"车间数据","pId":"7f9efd8cbe734f47b9897486cb8dfb77","id":"a2dc2437f2534aae8997806cdc52211d"},{"ChildNodes":[],"hasChildren":false,"name":"工区数据","pId":"7f9efd8cbe734f47b9897486cb8dfb77","id":"63e24b9f5ad541eea01a1a9929f52418"},{"ChildNodes":[],"hasChildren":false,"name":"区间（站厂）","pId":"7f9efd8cbe734f47b9897486cb8dfb77","id":"adfd7fa191e84d959137aac69b79a68d"},{"ChildNodes":[],"hasChildren":false,"name":"隧道数据","pId":"7f9efd8cbe734f47b9897486cb8dfb77","id":"acf44e69aa6c4cec88cf9ae48f764c95"},{"ChildNodes":[],"hasChildren":false,"name":"桥梁数据","pId":"7f9efd8cbe734f47b9897486cb8dfb77","id":"0b78cd8d695b450ca0fd295bebb4e4a8"},{"ChildNodes":[],"hasChildren":false,"name":"接触悬挂锚段","pId":"7f9efd8cbe734f47b9897486cb8dfb77","id":"fc4f0ebf95824757a749932ae07fe58e"},{"ChildNodes":[],"hasChildren":false,"name":"支柱运维检修","pId":"7f9efd8cbe734f47b9897486cb8dfb77","id":"bc3f760b851a4b4b9548ab79aed02125"}],"hasChildren":true,"name":"基础数据","pId":"e1ccaf5a237244eda9a87bfbe335a865","id":"7f9efd8cbe734f47b9897486cb8dfb77"},{"ChildNodes":[{"ChildNodes":[],"hasChildren":false,"name":"腕臂计算输入","pId":"e2a9904dcc6a4c27acea60ed00aef4f4","id":"de123547a63f4a5f8112bd53f2d6a768"},{"ChildNodes":[],"hasChildren":false,"name":"吊弦计算输入","pId":"e2a9904dcc6a4c27acea60ed00aef4f4","id":"f779ac39a2334de1a758252f0ab52cbc"},{"ChildNodes":[],"hasChildren":false,"name":"腕臂计算输出","pId":"e2a9904dcc6a4c27acea60ed00aef4f4","id":"875d3268bc9d4ded8a09b8be8fc4ed46"},{"ChildNodes":[],"hasChildren":false,"name":"吊弦计算输出","pId":"e2a9904dcc6a4c27acea60ed00aef4f4","id":"56c80ddd9bc14c618e98bf021b423ff8"}],"hasChildren":true,"name":"接触网计算系统","pId":"e1ccaf5a237244eda9a87bfbe335a865","id":"e2a9904dcc6a4c27acea60ed00aef4f4"},{"ChildNodes":[{"ChildNodes":[],"hasChildren":false,"name":"支柱信息","pId":"ed7bfec4788e4a4ba6df826b0b642642","id":"143bbc3e6c3e457f8e69feeea657e8c3"},{"ChildNodes":[],"hasChildren":false,"name":"支持装置","pId":"ed7bfec4788e4a4ba6df826b0b642642","id":"f47dcb64ee2d4ce1a5a10b5fd215be7b"},{"ChildNodes":[],"hasChildren":false,"name":"接触悬挂","pId":"ed7bfec4788e4a4ba6df826b0b642642","id":"1ba8009be7bb4b8cbb5560079fb851db"},{"ChildNodes":[],"hasChildren":false,"name":"线路放样","pId":"ed7bfec4788e4a4ba6df826b0b642642","id":"f6f5efc2f57746d9bed355a703493431"}],"hasChildren":true,"name":"线路数据驱动","pId":"e1ccaf5a237244eda9a87bfbe335a865","id":"ed7bfec4788e4a4ba6df826b0b642642"}],"hasChildren":true,"name":"接触网工程","pId":"d26688a8498045c0ac4036a4231f6a31","id":"e1ccaf5a237244eda9a87bfbe335a865"}],"hasChildren":true,"name":"四电工程","pId":"0","id":"d26688a8498045c0ac4036a4231f6a31"},JavaList集合根据ParentId递归【无限套娃】相关推荐
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