《按钮或链接与树型菜单的问题》

本人现想实现如下效果：
“当我点击网页中一个按钮或链接时，可以弹出一个多级的树型菜单,以便选择操作之用”，请各位能给思路（***最好为源码***）及多种不同的实现方法。在此先谢谢诸位！

解决方案 »

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<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib prefix="tree" uri="/WEB-INF/treetag.tld"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML  4.01  Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html>
<head>
<style type="test/css"> A:link {color: #003366; text-decoration: none;}
A:visited {color: #003366; text-decoration: none;}
A:hover {color: #666666; text-decoration: underline;}
</style>
<link rel="StyleSheet" href="${pageContext.request.contextPath}/sourceadmin/dtree.css" type="text/css" />
<script type="text/javascript" src="${pageContext.request.contextPath}/sourceadmin/dtree.js"></script>

</head><body  bgcolor="#F7FAFF" onload="showMenu()" >
  <table width="100%" border="0" cellpadding="0" cellspacing="0" height="100%"">
              <tr>
                <td height="25" colspan="3" valign="top" width="25%"><img src="${pageContext.request.contextPath}/images/bz.gif" width="100%" height="25"></td>
              </tr>
              </table>
<div>
<a href="${pageContext.request.contextPath}/listmenu.do" style="font-size:14px;color:#def234">flush</a>
</div>

<tree:showtree list="${menu}" projectname="${pageContext.request.contextPath}"/></body>
</html>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
package com.elec.tool;import java.io.IOException;
import java.util.List;import javax.servlet.jsp.JspException;
import javax.servlet.jsp.JspWriter;
import javax.servlet.jsp.tagext.TagSupport;import com.gainuo.elec.daomain.Menu2;public class TreeTarget extends TagSupport {
private String projectname;
private List list;

public String getProjectname() {
return projectname;
} public void setProjectname(String projectname) {
this.projectname = projectname;
} public List getList() {
return list;
}

public void setList(List list) {
this.list = list;
}

Menu2 menu2=new Menu2();

public int doEndTag() throws JspException {
JspWriter out=pageContext.getOut();
try {
out.println("<div class=\"dtree\">");
out.println("<p><a href=\"javascript: d.openAll();\">打开全部</a> | <a href=\"javascript: d.closeAll();\">关闭全部</a></p>");
out.println("<script type=\"text/javascript\">");
out.println("d = new dTree('d');");
out.println("d.add(0,-1,'资源列表','"+projectname+"/showmenu.do?id=0','所有资源目录','mainFrame');");

for(int i=0;i<list.size();i++){
out.println("d.add('"+((Menu2)list.get(i)).getId()+"','"+((Menu2)list.get(i)).getParentid()+"','"+((Menu2)list.get(i)).getName()+"','"+projectname+"/showmenu.do?id="+((Menu2)list.get(i)).getId()+"','','mainFrame');");

}
out.println("document.write(d);");
out.println(" </script>");
out.println(" </div>");
} catch (Exception e) {
e.printStackTrace();
}
return SKIP_BODY;
}
}

《 按钮或链接与树型菜单的问题 》

解决方案 »

《按钮或链接与树型菜单的问题》