文本主要向大家分享了java實現遍歷樹形菜單的實例代碼，具體如下。
OpenSessionView實現：
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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實現
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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; }} |
總結
以上就是本文關于java實現遍歷樹形菜單兩種實現代碼分享的全部內容，希望對大家有所幫助。如果有什么不足之處，歡迎留下您的寶貴意見，小編會及時回復大家的。感謝朋友們對本站的支持！
原文鏈接：http://blog.csdn.net/qq_34137397/article/details/72655078
