ajax code please help to solve this.

ajax code please help to solve this.

in this i am trying to get data from datbase and put it in combo box and then display it down using table and use ajax onchange but when i am trying to do so it show some error

viewapplicants.jsp

<a href="birth.do?submit=applicantsforbirthcertificate">Applicants for Birth Certificate</a>

when i am clicking this it goes to database and retrieve

viewbirthapplicants.jsp

<%@ page language="java" pageEncoding="UTF-8"%>

<%@ taglib uri="http://struts.apache.org/tags-bean" prefix="bean" %>
<%@ taglib uri="http://struts.apache.org/tags-html" prefix="html" %>
<%@ taglib uri="http://struts.apache.org/tags-logic" prefix="logic" %>
<%@ taglib uri="http://struts.apache.org/tags-tiles" prefix="tiles" %>



<jsp:directive.page import="p.form.BirthForm"/>
<jsp:directive.page import="java.util.ArrayList"/>



<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" 

"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<!--
Design by Free CSS Templates
http://www.freecsstemplates.org
Released for free under a Creative Commons Attribution 2.5 License

Name       : Rain on Leaves  
Description: A two-column, fixed-width design with dark color scheme.
Version    : 1.0
Released   : 20101114

-->
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta name="keywords" content="" />
<meta name="description" content="" />
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<title>Rain on Leaves   by Free CSS Templates</title>
<link href="style.css" rel="stylesheet" type="text/css" media="screen" />

<script type="text/javascript">
var ob;
  function fun(str)
   {
      try
         {
            ob=new XMLHttpRequest();
         }
       catch(e)
         {
            try
                {
                    ob=new ActiveXObject("Msxml2.XMLHTTP");
                }
            catch(e)
            {

             try
                {
                    ob=new ActiveXObject("Msxml2.XMLHTTP");
                }
                catch(e)
                {
                    alert("browser exception");
                    return false;
                }
          }
    }

  function fun5()
    {
        if(ob.readyState==4)
            {

                document.getElementById("result").innerHTML=ob.responseText;
            }
       }
  alert(1);
  ob.onreadystatechange=fun5;
  var url="/mc/birth.do";

  url=url+"?id="+str;

  url=url+"&s="+Math.random();
  ob.open("GET",url,true);
  ob.send();
  alert(2);


   }              
</script>

</head>
<body>
<div id="wrapper">
    <div id="menu">
        <ul>
            <li class="current_page_item"><span>
            <a href="adminhome.jsp">Home</a></span></li>
            <li><a href="contactus.jsp">contact us</a></li>
            <li><a href="aboutus.jsp">about us</a></li>

            <li><a href="help.jsp">help instruction</a></li>

        </ul>
    </div>
    <!-- end #menu -->
    <div id="header">
        <div id="logo">
            <h1><marquee behavior="alternate"  scrollamout="5"><center></center><em>
<FONT face="Algerian" size="6" color="yellow">Municipal Corporation (MC)</FONT></em></center></marquee><br /></h1>
            </div>
    </div>
    <!-- end #header -->
    <div id="page">
        <div id="content">
            <div class="post">
                <h2 class="title"><a><marquee loop="1" behavior="slide"><font face="Forte" color="white" >VIEW BIRTH APPLICANTS</font></marquee></a></h2>

                     <ul>

                      <li><a href="viewapplicants.jsp">View Applicants Details</a></li>

                       </ul>
                       <br />
                       <br />
                       <br />
                       <br />
                       <br />

                       <html:form action="birth">
                       <table>
                        <% 
                        ArrayList<String> id=(ArrayList<String>)request.getAttribute("ID");
                        ArrayList<String> birthregno=(ArrayList<String>)request.getAttribute("BIRTH_REGISTRATION_NO");
                         %> 
                        <tr>
                        <td>Birth Reg No</td>
                        <td><html:select property="id" onchange="fun(this.value);">
                            <%
                               for(int i=0;i<id.size();i++)
                                   {
                                     %>
                                       <html:option value="<%=id.get(i) %>"><%=birthregno.get(i) %></html:option>
                                  <%} %>
                                 </html:select>
                                 </td></tr>



                   </table>



                   </html:form>

                       <div id="result">


                       <bean:write name="birthForm" property="msg"/> 
                      <bean:write name="birthForm" property="msg1"/>                


                         <div class="post">


            </div>
        </div>
    </div>
</div>          

    <!-- end #content -->
    <div id="sidebar">
            <ul>
                <li>

                    <ul>
                    <marquee loop="1" direction="up" behavior="slide" >
                    <font face="Kristen ITC">

                        <li><a href="workprofile.jsp">Work Profile</a></li>
                        <li><a href="updatewards.jsp">Ward Profile</a></li>
                        <li><a href="updatebudgetdetails.jsp">Budget</a></li>
                        <li><a href="updatehealthandsanitation.jsp">Health and Sanitation</a></li>
                        <li><a href="updatetenders.jsp">Tenders</a></li>

                        </font></marquee>


                    </ul>
                </li>

            </ul>
        </div>
        <!-- end #sidebar -->
    <div style="clear: both;"> </div>
    <!-- end #page -->
     <br />
                       <br />
                       <br />
                       <br />
                       <br />

    <div id="footer">
        <p><FONT color="black">Copyright (c) 2011 . All rights reserved. Design bY Pratyush Mahapatra</FONT></p>
    </div>
    <!-- end #footer -->
</div>

</body>
</html>

BirthAction class

public ActionForward applicantsforbirthcertificate(ActionMapping mapping, ActionForm form,
            HttpServletRequest request, HttpServletResponse response)throws SQLException
    {
        BirthForm birthForm = (BirthForm) form;// TODO Auto-generated method stub
        DBLogic dblogic=new DBLogic();

        ArrayList<String> id=new ArrayList<String>();
        ArrayList<String> birthregno=new ArrayList<String>();

        ResultSet rs=dblogic.Applicantsbirthcertificate();


        while(rs.next())

        {

            id.add(rs.getString("BIRTHID"));
            birthregno.add(rs.getString("BIRTH_REGISTRATION_NO"));

        }

        request.setAttribute("ID", id);
        request.setAttribute("BIRTH_REGISTRATION_NO",birthregno);
        return mapping.findForward("viewbirthapplicants");
    }

    public ActionForward execute(ActionMapping mapping, ActionForm form,
            HttpServletRequest request, HttpServletResponse response)throws  IOException
    {

        BirthForm birth = (BirthForm) form;// TODO Auto-generated method stub

        PrintWriter out=response.getWriter();
        ResultSet rs=null;
        Connection con=null;
        Statement st=null;

         System.out.println(1);
        String id=request.getParameter("id");
         System.out.println(2);
        Long brn=Long.parseLong(id);
         System.out.println(3);
        System.out.println("BIRTH_REGISTRATION_NO:"+brn);

         try

            {
                Class.forName("oracle.jdbc.driver.OracleDriver");
            con=DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:XE","bmch","bmch");
                 st=con.createStatement();



                 System.out.println(id);



                 rs=st.executeQuery("select * from BIRTHCERTIFICATE where BIRTH_REGISTRATION_NO="+brn+"");

         System.out.println("id"+brn);

        if(rs.next())
        {

            out.println("<table border='3'><tr>");

            out.println("<th>Date of Birth</th><th>Sex</th><th>Name</th><th>Name of Mother</th><th>Name of Father</th><th>Permanent Address</th><th>Place of Birth</th><th>Hospital/institute Name</th><th>Address</th><th>Name of Town/village</th><th>Name of District</th><th>Name of State</th><th>Religion</th><th>Mother's Education</th><th>Father's Education</th><th>Father's Occupation</th><th>Mother's Occupation</th><th>Age of Mother</th><th>No of Born of Child</th><th>Type of Attention at Delivery</th><th>Method of Delivery</th><th>Birth Weight(in kg)</th><th>Duration of Pergnancy(in week)</th><th>Oder of Birth</th><th>Informant Name</th><th>Address</th><th>Approved</th><th>Reject</th></tr>");      

            out.println("<td>");out.println(rs.getLong("BIRTHID"));out.println("</td>");
            out.println("<td>");out.println(rs.getString("DATE_OF_BIRTH"));out.println("</td>");
            out.println("<td>");out.println(rs.getString("SEX"));out.println("</td>");
            out.println("<td>");out.println(rs.getString("NAME_OF_FATHER"));out.println("</td>");
            out.println("<td>");out.println(rs.getString("NAME_OF_MOTHER"));out.println("</td>");
            out.println("<td>");out.println(rs.getString("PERMANENT_ADDRESS"));out.println("</td>");
            out.println("<td>");out.println(rs.getString("PLACE_OF_BIRTH"));out.println("</td>");
            out.println("<td>");out.println(rs.getString("HOSPITAL/INSTITUTE"));out.println("</td>");
            out.println("<td>");out.println(rs.getString("ADDRESS"));out.println("</td>");
            out.println("<td>");out.println(rs.getString("NAME_OF_TOWN/VILLAGE"));out.println("</td>");
            out.println("<td>");out.println(rs.getString("DISTRICT"));out.println("</td>");
            out.println("<td>");out.println(rs.getString("STATE"));out.println("</td>");
            out.println("<td>");out.println(rs.getString("RELIGION"));out.println("</td>");
            out.println("<td>");out.println(rs.getString("MOTHER'S_EDUCATION"));out.println("</td>");
            out.println("<td>");out.println(rs.getString("FATHER'S_OCCUPATION"));out.println("</td>");
            out.println("<td>");out.println(rs.getString("MOTHER'S_OCCUPATION"));out.println("</td>");
            out.println("<td>");out.println(rs.getString("FATHER_EDUCATION"));out.println("</td>");
            out.println("<td>");out.println(rs.getLong("AGE_OF_MOTHER"));out.println("</td>");
            out.println("<td>");out.println(rs.getLong("NO_OF_BORN_OF_CHILD"));out.println("</td>");
            out.println("<td>");out.println(rs.getString("ORDER_OF_BIRTH"));out.println("</td>");
            out.println("<td>");out.println(rs.getString("INFORMANENT_NAME"));out.println("</td>");
            out.println("<td>");out.println(rs.getString("INFORMANENT_ADDRESS"));out.println("</td>");
            out.println("<td>");out.println(rs.getString("TYPE_OF_ATTENTION_AT_DELIVERY"));out.println("</td>");
            out.println("<td>");out.println(rs.getString("METHOD_OF_DELIVERY"));out.println("</td>");
            out.println("<td>");out.println(rs.getLong("BIRTH_WEIGHT(IN_KG)"));out.println("</td>");
            out.println("<td>");out.println(rs.getString("DURATION_OF_PERGNANCY"));out.println("</td>");

            out.println("<td>");out.println(rs.getString("NAME"));out.println("</td>");


            out.println("<td></tr></table>");

        }
        else 
        {
            out.println("Data not found");
        }
            }
        catch(Exception err)
        {
            System.out.println(err.getMessage());
        }
            return null;

    }   

please help me when i am running this it show an error

exception 

javax.servlet.ServletException: java.lang.NumberFormatException: null
    org.apache.struts.action.RequestProcessor.processException(RequestProcessor.java:535)
    org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:433)
    org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
    org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
    org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:717)


root cause 

java.lang.NumberFormatException: null
    java.lang.Long.parseLong(Long.java:372)
    java.lang.Long.parseLong(Long.java:461)
    p.action.BirthAction.execute(BirthAction.java:102)
    org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)
    org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
    org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
    org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:717)


note The full stack trace of the root cause is available in the Apache Tomcat/6.0.24 logs.
View Answers

April 16, 2012 at 5:46 PM

1)country.jsp:

<%@page import="java.sql.*"%>
 <html>
      <head>  
      <script language="javascript" type="text/javascript">  
      var xmlHttp  
      var xmlHttp
      function showState(str){
      if (typeof XMLHttpRequest != "undefined"){
      xmlHttp= new XMLHttpRequest();
      }
      else if (window.ActiveXObject){
      xmlHttp= new ActiveXObject("Microsoft.XMLHTTP");
      }
      if (xmlHttp==null){
      alert("Browser does not support XMLHTTP Request")
      return;
      } 
      var url="state.jsp";
      url +="?count=" +str;
      xmlHttp.onreadystatechange = stateChange;
      xmlHttp.open("GET", url, true);
      xmlHttp.send(null);
      }

      function stateChange(){   
      if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete"){   
      document.getElementById("state").innerHTML=xmlHttp.responseText   
      }   
      }

      function showCity(str){
      if (typeof XMLHttpRequest != "undefined"){
        xmlHttp= new XMLHttpRequest();
        }
      else if (window.ActiveXObject){
        xmlHttp= new ActiveXObject("Microsoft.XMLHTTP");
        }
      if (xmlHttp==null){
      alert("Browser does not support XMLHTTP Request")
      return;
      } 
      var url="city.jsp";
      url +="?count=" +str;
      xmlHttp.onreadystatechange = stateChange1;
      xmlHttp.open("GET", url, true);
      xmlHttp.send(null);
      }
      function stateChange1(){   
      if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete"){   
      document.getElementById("city").innerHTML=xmlHttp.responseText   
      }   
      }
      </script>  
      </head>  
      <body>  
      <table border="1">
      <tr><th>Country</th><th>State</th><th>City</th></tr>
      <tr><td>
      <select name='country' onchange="showState(this.value)">  
       <option value="none">Select</option>  
    <%
 Class.forName("com.mysql.jdbc.Driver").newInstance();  
 Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/test","root","root");  
 Statement stmt = con.createStatement();  
 ResultSet rs = stmt.executeQuery("Select * from country");
 while(rs.next()){
     %>
      <option value="<%=rs.getString(1)%>"><%=rs.getString(2)%></option>  
      <%
 }
     %>
      </select> 
      </td>
      <td id='state'><select name='state' >  
      <option value='-1'></option>  
      </select>
      </td>
       <td id='city'> <select name='city' >  
      <option value='-1'></option>  
      </select>   
      </td>
      </tr>
      </table>
      </body> 
      </html>

April 16, 2012 at 5:47 PM

continue..

2)state.jsp:

<%@page import="java.sql.*"%>
<%
String country=request.getParameter("count");  
 String buffer="<select name='state' onchange='showCity(this.value);'><option value='-1'>Select</option>";  
 try{
 Class.forName("com.mysql.jdbc.Driver").newInstance();  
 Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/test","root","root");  
 Statement stmt = con.createStatement();  
 ResultSet rs = stmt.executeQuery("Select * from state where countryid='"+country+"' ");  
   while(rs.next()){
   buffer=buffer+"<option value='"+rs.getString(1)+"'>"+rs.getString(3)+"</option>";  
   }  
 buffer=buffer+"</select>";  
 response.getWriter().println(buffer); 
 }
 catch(Exception e){
     System.out.println(e);
 }

 %>

3)city.jsp:

<%@page import="java.sql.*"%>
<%
String state=request.getParameter("count");  
 String buffer="<select name='city'><option value='-1'>Select</option>";  
 try{
 Class.forName("com.mysql.jdbc.Driver").newInstance();  
 Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/test","root","root");  
 Statement stmt = con.createStatement();  
 ResultSet rs = stmt.executeQuery("Select * from city where stateid='"+state+"' ");  
   while(rs.next()){
   buffer=buffer+"<option value='"+rs.getString(2)+"'>"+rs.getString(3)+"</option>";  
   }  
 buffer=buffer+"</select>";  
 response.getWriter().println(buffer); 
 }
 catch(Exception e){
     System.out.println(e);
 }
 %>

We have created 3 dependent dropdown. You can create the fourth one similarly.

For the above code, we have used 3 database tables:

1)country

CREATE TABLE `country` (                                 
           `countryid` bigint(255) NOT NULL auto_increment,       
           `countryname` varchar(255) default NULL,               
           PRIMARY KEY  (`countryid`)                             
     )

2)state

CREATE TABLE `state` (                                   
          `stateid` bigint(255) NOT NULL auto_increment,         
          `countryid` int(255) default NULL,                     
          `state` varchar(255) default NULL,                     
          PRIMARY KEY  (`stateid`)                               
        )

3)city

CREATE TABLE `city` (                                    
          `cityid` bigint(255) NOT NULL auto_increment,          
          `stateid` int(255) default NULL,                       
          `city` varchar(255) default NULL,                      
          PRIMARY KEY  (`cityid`)                                
        )









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Please help  Problem: Write a program that does addition, subtraction, multiplication and division operation on real numbers. The operation started with a user entered 2 numbers and click one of the operation buttons
java please please help
java please please help  Dear Friends plz help me to complete this program import java.util.*; public class StringDemo { static...[] to HashMap so that i can seperate key and value using Map.Entry.Please help me!  
help please?
help please?  Define a class named Circle with the following properties: ? An integer data field named radius with protected access modifier, and a String data field named colour with private access modifier. Both data fields
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Please help  Problem: Write a program that does addition, subtraction, multiplication and division operation on real numbers. The operation started with a user entered 2 numbers and click one of the operation buttons
please help
please help  public class AllContact extends javax.swing.JFrame { /** Creates new form AllContact */ public AllContact() { initComponents(); try{ Connection1 con =new Connection1(); Connection conobj
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Please Help Now  i want to put this map in ajax oriented codeigniter website thanks in advance plz help me now plz very urgent
Can any one please help me in this ,,,,,,, need java code for this ,,,,please anyone
Can any one please help me in this ,,,,,,, need java code for this ,,,,please anyone  The Airport Valet Parking Company (AVP) is a company which provides a convenient medium cost parking solution to users of a local airport. Key
ajax code - Ajax
will help me to do this using java...  Hi Friend, Please visit...ajax code  hi can any body tell me how i can create an autocomplete textbox in java using ajax. For example in google when we type any thing
help me to solve this question
help me to solve this question  Write a program that inputs a series of integers into an array. The numbers are in the range 0 to 100. Calculate and display : a) The Largest number b) The Smallest Number c)The sum of the numbers
urgent...pleAse help me.....please!
urgent...pleAse help me.....please!  please help me urgent! how can i do dictionary with the use of array code in java, where i will type the word then the corresponding meaning for that word will appear...thanks
code problem:ajax - Ajax
code problem:ajax  Hi,I am using ajax to populate a select box.for this I am writing out.write("ONE"); like that.it runs fine in firefox.bt not in IE.Can anyone help me out this... thanks

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