ztree使用 （一） 递归后台的数据

public class ZtreeUtil {
    
    /**
     * 数据
     * @param list
     * @return
     */
    public static List<Map<String, Object>> econdingMap(List<ArticleType> list) {
        List<Map<String, Object>> mapList = new ArrayList<Map<String,Object>>();
        for (ArticleType shopCategory : list) {
            Map<String, Object> map = new HashMap<String, Object>();
            map.put("id", shopCategory.getChildCode()+"");//子节点
            map.put("pId", shopCategory.getParentCode()+"");//父节点
            map.put("level", shopCategory.getTypeLevel()+"");//层级
            map.put("name", shopCategory.getTypeName());//名称
            mapList.add(map);
        }
        
        return getStandardJSON(mapList);
    }
    
    public static List<Map<String, Object>> getStandardJSON(List<Map<String, Object>> list) {
        // 根据不同框架获取对应的List数据
        List<Map<String, Object>> parentList = new ArrayList<Map<String,Object>>();
        for (Map<String, Object> map : list) {
            if (map.get("pId").equals("0")) {
                parentList.add(map);
            }
        }    
        recursionChildren(parentList, list);
        return parentList;
    }

    // 递归获取子节点数据
    public static void recursionChildren(List<Map<String, Object>> parentList, List<Map<String, Object>> allList) {
        for (Map<String, Object> parentMap : parentList) {
            List<Map<String, Object>> childrenList = new ArrayList<Map<String,Object>>();
            for (Map<String, Object> allMap : allList) {
                if (allMap.get("pId").equals(parentMap.get("id"))) {
                    childrenList.add(allMap);
                }
            }
            if (!StringUtils.isEmpty(childrenList)) {
                parentMap.put("children", childrenList);
                recursionChildren(childrenList, allList);
            }
        }
    }

}