java实现遍历树形菜单两种实现代码分享

2024-07-13 09:54:43

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我们在开发程序的时候，经常会使用树形菜单进行布局，接下来错新技术频道小编就给大家介绍java实现遍历树形菜单两种实现代码分享，我们一起来了解一下。

OpenSessionView实现：

package org.web;import java.io.IOException;import javax.servlet.Filter;import javax.servlet.FilterChain;import javax.servlet.FilterConfig;import javax.servlet.ServletException;import javax.servlet.ServletRequest;import javax.servlet.ServletResponse;import org.dao.BaseHibernateDao;import org.hibernate.Hibernate;import org.hibernate.Session;import org.hibernate.Transaction;public class OpenSessionView extends BaseHibernateDao implements Filter {	/**(非 Javadoc)	 *

Title: destroy

Description(描述):

* @see javax.servlet.Filter#destroy() */ @Override public void destroy() { // TODO Auto-generated method stub } /**(非 Javadoc) *

Title: doFilter

Description(描述):

* @param arg0 * @param arg1 * @param arg2 * @throws IOException * @throws ServletException * @see javax.servlet.Filter#doFilter(javax.servlet.ServletRequest, javax.servlet.ServletResponse, javax.servlet.FilterChain) */ @Override public void doFilter(ServletRequest arg0, ServletResponse arg1, FilterChain arg2) throws IOException, ServletException { Session session = null; Transaction tx = null; try { session = getSession(); tx = session.beginTransaction(); arg2.doFilter(arg0, arg1); tx.commit(); } catch (Exception e) { e.printStackTrace(); tx.rollback(); } finally{ closeSession(); } } /**(非 Javadoc) *

Title: init

Description(描述):

* @param arg0 * @throws ServletException * @see javax.servlet.Filter#init(javax.servlet.FilterConfig) */ @Override public void init(FilterConfig arg0) throws ServletException { // TODO Auto-generated method stub } }

TreeAction实现

package org.web;import net.sf.json.JSONArray;import net.sf.json.JSONObject;import org.Service.IVoteTreeService;import org.Service.impl.VoteTreeServiceImpl;import com.alibaba.fastjson.JSON;import com.opensymphony.xwork2.ActionSupport;public class TreeAction extends ActionSupport {	private JSONArray treejson;	private IVoteTreeService voteService = new VoteTreeServiceImpl();	public String getTree(){		treejson = voteService.getTreeJson();		return SUCCESS;	}	public JSONArray getTreejson() {		return treejson;	}	public void setTreejson(JSONArray treejson) {		this.treejson = treejson;	}}

通过错新技术频道小编介绍的java实现遍历树形菜单两种实现代码分享，相信大家了解的差不多了，如果还有想要学习的内容，也可以在下面给小编留言哦。

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