/**
* 在一个集合中查找子
*
* @param menuList 所有菜单集合
* @param parentid 父id
* @return 找到的子集合
*/
private List<Menu> getChildren(List<Menu> menuList, Integer parentid) {
List<Menu> children = new ArrayList<Menu>();
for (Menu menu : menuList) {
if (menu.getPid().compareTo(parentid) == 0) {
menu.setChildren(this.getChildren(menuList, menu.getId()));
children.add(menu);
}
}
return children;
}
@Override
public List<Menu> getMenuTree(Integer menuid) {
if (menuid == null) throw new IllegalArgumentException("menuid argument is null");
List<Menu> menuList = this.getMenuList();
List<Menu> topMenuList = new ArrayList<Menu>();
for (Menu menu : menuList) {
if (menu.getPid().compareTo(menuid) == 0) {
List<Menu> children = this.getChildren(menuList, menu.getId());
menu.setChildren(children);
topMenuList.add(menu);
}
}
return topMenuList;
}