随笔

正则匹配 $$

 

/\$[^\$]+\$/g

.replace(/\[/g,'').replace(/\]/g,'')

 

树结构 -递归

 

public static List<Map<String,Object>> buildTree(List<Map<String,Object>> list,String parentId){

List<Map<String,Object>> menus=new ArrayList<Map<String,Object>>();

for (Map<String,Object> menu : list) { 

String id = (String) menu.get("id");

String pid = (String) menu.get("pid");

if (parentId.equals(pid)) { 

List<Map<String,Object>> menuLists = buildTree(list, id);

if(!menuLists.isEmpty()){

menu.put("children", menuLists);

}

menus.add(menu); 

} 

} 

return menus;

}