java实现遍历树形菜单两种实现代码分享实现遍历树形菜单两种实现代码分享
主要介绍了java实现遍历树形菜单两种实现代码分享,两种实现:OpenSessionView实现、TreeAction实现。具
有一定参考价值,需要的朋友可以了解下。
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: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实现实现
package org.web;
import net.sf.json.JSONArray;
import net.sf.json.JSONObject;