java实现遍历树形菜单两种实现代码分享

java实现遍历树形菜单两种实现代码分享

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.http://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;

}

}

总结

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