文本主要向大家分享了java实现遍历树形菜单的实例代码，具体如下。

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) * <p>Title: destroy</p> * <p>Description(描述): </p> * @see javax.servlet.Filter#destroy() */ @Override public void destroy() { // TODO Auto-generated method stub } /**(非 Javadoc) * <p>Title: doFilter</p> * <p>Description(描述): </p> * @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) * <p>Title: init</p> * <p>Description(描述): </p> * @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; }}

总结

以上就是本文关于java实现遍历树形菜单两种实现代码分享的全部内容，希望对大家有所帮助。感兴趣的朋友可以继续参阅本站：java中变量和常量详解、浅谈java中==以及equals方法的用法、创建并运行一个java线程方法介绍等，如果有什么不足之处，欢迎留下您的宝贵意见，小编会及时回复大家的。感谢朋友们对本站的支持！