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/** *
*/
package
com.test.controller;
import java.util.ArrayList;
import java.util.List;
/** * @author ST2014-12
*
*/
public
class FindAllChildren {
List<Long> childrenIdList=new
ArrayList<Long>();
static
List<Node> nodeList=new
ArrayList<Node>();
public
static void main(String[] args) {
Node node1 = new
Node(1l, "蔬菜", 0l);
Node node2 = new
Node(2l, "水产", 0l);
Node node3 = new
Node(3l, "畜牧", 0l);
Node node4 = new
Node(4l, "瓜类", 1l);
Node node5 = new
Node(5l, "叶类", 1l);
Node node6 = new
Node(6l, "丝瓜", 4l);
Node node7 = new
Node(7l, "黄瓜", 4l);
Node node8 = new
Node(8l, "白菜", 5l);
Node node9 = new
Node(9l, "虾", 2l);
Node node10 = new
Node(10l, "鱼", 2l);
Node node11 = new
Node(11l, "牛", 3l);
nodeList.add(node1);
nodeList.add(node2);
nodeList.add(node3);
nodeList.add(node4);
nodeList.add(node5);
nodeList.add(node6);
nodeList.add(node7);
nodeList.add(node8);
nodeList.add(node9);
nodeList.add(node10);
nodeList.add(node11);
FindAllChildren queryCh=new
FindAllChildren();
System.out.println(queryCh.getChildrenId(2l));
}
private
String getChildrenId(long
level) {
// TODO Auto-generated method stub
List<Node> childrenList=getChildrenList(level);
//遍历子节点列表
queryChildrenList(childrenList);
return
childrenIdList.toString();
}
//递归获取每个节点下子节点
void
queryChildrenList(List<Node> childrenList){
for(Node n : childrenList){ //遍历列表中每个节点
List<Node>chilList= getChildrenList(n.getId());//获取每个节点的子节点列表
queryChildrenList(chilList);
}
};
//遍历全列表 查询所传id 下的子节点
private
List<Node> getChildrenList(Long level) {
List<Node> childrenList=new
ArrayList<Node>();//获取该节点的子节点列表
// TODO Auto-generated method stub
for(Node n : nodeList){
if(n.getParentId()==level){
childrenList.add(n);
childrenIdList.add(n.getId());
}
}
return
childrenList;
}
}
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