多级下拉菜单的级连显示问题。

在这里，我为了实现公司－部门级连显示问题，我编写了leader_add_competence_dialogquery.jsp ，web.xml，SelectCropDepartServlet.java 类。

其中注意的是leader_add_competence_dialogquery中的.jspChange_Select() javascript函数中的/selectCropDepart是在web.xml中定义的servlet类。我们在实现应用当中需要修改的用红字标出。

其中leader_add_competence_dialogquery.jsp代码如下：

<%@ page contentType="text/html; charset=gbk" language="java" import="java.sql.*" errorPage="" %>

<%@ page import="pub.*" %>

http://www.w3.org/TR/html4/loose.dtd">

<%

String strUserID=request.getParameter("Key");

session.setAttribute("EmployUserID",strUserID);

%>

&nbsp;&nbsp;当前位置：系统管理&gt;&gt;领导设置&gt;&gt;添加领导权限

公司：

所有公司

部门：

所有部门

&nbsp;&nbsp;&nbsp;&nbsp;

<%

Conn conn=new Conn();

String m1Script="";

//String m2Script="";

m1Script=PubClass.BindAllCorpList("document.all.Corp");

//m2Script=PubClass.BindAllDepartList("document.all.Depart",""+session.getAttribute("cropid"));

//sPositionList=conn.bindDropListSel("document.all.PositionName","select * from sys08_Position","PositionName","PositionID");

%>

<%= m1Script%>

Web.xml代码如下：

xmlns="http://java.sun.com/xml/ns/j2ee"

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee

http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">

selectCropDepart

pub.SelectCropDepartServlet

selectCropDepart

/selectCropDepart

SelectCropDepartServlet.java Servlet类代码如下

/**

* 从sys04_Machine表中取数据进行二级下拉菜单(公司,部门)及关联的servlet类

* @author 邓浩

*/

public class SelectCropDepartServlet extends HttpServlet {

public SelectCropDepartServlet() {

super();

}

public void destroy() {

super.destroy(); }

/**

* The doGet method of the servlet.

*

* This method is called when a form has its tag value method equals to get.

*

* @param request the request send by the client to the server

* @param response the response send by the server to the client

* @throws ServletException if an error occurred

* @throws IOException if an error occurred

*/

public void doGet(HttpServletRequest request, HttpServletResponse response)

throws ServletException, IOException {

response.setContentType("text/xml");

response.setCharacterEncoding("UTF-8");

response.setHeader("Cache-Control", "no-cache");

String targetId = request.getParameter("id").toString();

String xml_start ="";

String xml_end = "";

String xml = "";

try{

Conn conn=new Conn();

DataTable dt=new DataTable();

String Sql="select * from sys04_Machine where cropid="+targetId;

////System.out.println("Sql:"+Sql);

xml+= "all所有部门" ;

int i=0;

if (conn.querySql(Sql,dt)){

while (i

xml+= ""+dt.getItemForName(i,"MachID").toString()+""+dt.getItemForName(i,"MachName").toString()+"";

i=i+1;

}

}

String last_xml = xml_start + xml + xml_end;

//System.out.println("last_xml:"+last_xml);

// last_xml = new String(last_xml.getBytes("UTF-8"), "GB2312");

response.getWriter().write(last_xml);

}// try

catch (Exception e){

System.out.print(e.getMessage());

}

}

public void doPost(HttpServletRequest request,HttpServletResponse response) throws ServletException,IOException{

doGet(request,response);

}

public void init() throws ServletException {

}

}

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