樹形菜單遞歸

1.menuservicedao

package com.springmvc.manage.service;

import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;

import javax.annotation.Resource;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.springmvc.manage.dao.MenuDao;
import com.springmvc.manage.model.Menu;
import com.springmvc.manage.servicedao.MenuServiceDao;

import net.sf.json.JSONArray;

@Service("menuservice")
public class MenuServiceDaoImpl implements MenuServiceDao {

	@Resource
	private MenuDao menudao;
	private List<Menu> list, list1, list2 = new ArrayList();
	private List<String> list3 = new ArrayList();

	@Override
	public List<Menu> findParentMenu(List<Menu> menu) {
		// TODO Auto-generated method stub
		System.out.println(list2.size() + "-----");
		if (menu.size() != 0) {
			for (int i = 0; i < menu.size(); i++) {
				list = this.findSonMenu(menu.get(i));
				if (list.size() == 0) {
					continue;
				}
				menu.get(i).setChildren(list);
				this.findParentMenu(list);
				list2.add(menu.get(i));
			}

		}
		return list2;
	}

	// 找到子節點
	@Override
	public List<Menu> findSonMenu(Menu menu) {
		// TODO Auto-generated method stub
		return menudao.findMenu(menu.getId());
	}

/*	@Override
	public List<Menu> findMenu(Menu menu) {
		// TODO Auto-generated method stub
		
		 * list=menudao.findMenu(menu.getId()); for(Menu m:list){
		 * System.out.println("--------------"+m.toString()); }
		 * list2=this.findParentMenu(list);
		 
		list1 = menudao.findMenu(menu.getId()); // 查詢到tid=0
		list2 = this.findParentMenu(list1); // 樹形結構
		for (Menu m : list1) {
			for (Menu m1 : list2) {
				if (m.getId() == m1.getId()) {
					list.add(m1);
				}
			}
		}

		return list;
	}*/

	@Override
	public List findTreeMenu(Menu menu) {
		// TODO Auto-generated method stub
		list1 = menudao.findMenu(menu.getId()); // 查詢到tid=0
		System.out.println(list2.size() + "++++++++++++++++++++++++++++++++++++++++++++++");
		if (list2.size() == 0) {
			list2 = this.findParentMenu(list1); // 樹形結構
			System.out.println(list2.toString());
			for (Menu m : list1) {
				for (Menu m1 : list2) {
					if (m.getId() == m1.getId()) {

						list3.add(m1.toString());
					}
				}
			}
		}

		System.out.println(list3.toString() + "--------");
		return list3;
	}
}

2.測試類

package com.springmvc.manage.servicedao;

import static org.junit.Assert.*;

import java.util.List;

import org.junit.Test;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.springmvc.manage.model.Menu;
import com.springmvc.manage.service.MenuServiceDaoImpl;

import net.sf.json.JSONArray;

public class MenuServiceDaoTest {

	private JSONArray json;
	
	private ClassPathXmlApplicationContext ct;
	@Test
	public void testFindParentMenu() {
		//fail("Not yet implemented");
		ct=new ClassPathXmlApplicationContext("xml/spring-mybatis.xml");
		MenuServiceDao msd=(MenuServiceDao)ct.getBean("menuservice");
		//MenuServiceDaoImpl msd=new MenuServiceDaoImpl();
		Menu menu=new Menu();
		
		menu.setId(0);
		/*List<Menu> list=msd.findMenu(menu);
		for(Menu m:list){
			System.out.println(m.toString());
		}*/
		List  list=msd.findTreeMenu(menu);
		for(int i=0;i<list.size();i++){
			System.out.println(list.get(i).toString());
		}
	//	System.out.println(list.toString()+"--------");
		String string=list.toString();
		System.out.println("-----------------");
		String s=string.replace("[", "");
		String s1=s.replace("]", "");
		System.out.println("----------11");
		System.out.println(s1);
	//	json=JSONArray.fromObject(s1);
	//	System.out.println(json);
	}

}

3.項目文件代碼晚點上傳