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Can anyone make this code work?

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dave_nithis dave_nithis is offline Offline
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Can anyone make this code work?

 
0
  #1
Jul 25th, 2008
This is my HTML File:

html Syntax (Toggle Plain Text) 
  1. <html>
  2. <head>
  3. <script type="text/javascript">
  4. function validateCatalogId(){
  5.  
  6. var req=init();
  7.  
  8.   function init(){
  9.  
  10. if (window.XMLHttpRequest) {
  11.            return new XMLHttpRequest();
  12.        } else if (window.ActiveXObject) {
  13.  
  14.            return new ActiveXObject("Microsoft.XMLHTTP");
  15.        }
  16.  
  17. }
  18. var catalogId=document.getElementById("catalogId");
  19. req.open("POST", "validateForm", true);
  20. req.onreadystatechange=processRequest;
  21. req.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
  22. req.send("catalogId="+ encodeURIComponent(catalogId.value));
  23.  
  24. function processRequest(){
  25.  
  26. if(req.readyState==4){
  27.    if(req.status==200){
  28.  
  29.       processResponse();
  30.  
  31.     }
  32.   }
  33. }
  34.  
  35. function processResponse(){
  36.  
  37. var xmlMessage=req.responseXML;
  38.  
  39.  }
  40. }  
  41.  
  42. </script>
  43.  
  44. </head>
  45. <body>
  46. <h1>Form for Catalog Entry</h1>
  47. <form name="validationForm" action="validateForm" method="post">
  48.  
  49. <div id="catalogId" name="catalogId"> </div>
  50. <table>
  51. <tr><td>Journal:</td><td><input    type="text"
  52.             size="20"  
  53.               id="journal"
  54.             name="journal"></td>
  55. </tr>
  56.  
  57. <tr><td>Publisher:</td><td><input    type="text"
  58.             size="20"  
  59.               id="publisher"
  60.             name="publisher"></td>
  61. </tr>
  62. <tr><td><input    type="button" onclick="validateCatalogId();"
  63.             value="Create Catalog"  
  64.               id="submitForm"
  65.             name="submitForm"></td>
  66. </tr>
  67. </table>
  68.  
  69. </form>
  70.  
  71. </body>
  72. </html>

And this is my servlet:

java Syntax (Toggle Plain Text) 
  1. import java.io.*;
  2. import java.sql.*;
  3. import javax.naming.InitialContext;
  4. import javax.servlet.*;
  5. import javax.servlet.http.*;
  6.  
  7. public class FormServlet extends HttpServlet {
  8.  
  9. 			 private String catalogId =null;
  10. 			 private String journal=null;
  11. 			 private String publisher= null;
  12.  
  13. 			 public void setCatalogId(String catalogId)
  14. 			{
  15. 				 this.catalogId= catalogId;
  16. 			}
  17. 			 public String getCatalogId()
  18. 			{
  19. 				return catalogId;
  20. 			}
  21.  
  22. 			 public void setJournal(String journal)
  23. 			{
  24. 				 this.journal= journal;
  25. 			}
  26.  
  27. 			 public String getJournal()
  28. 			{
  29. 				return journal;
  30. 			}
  31.  
  32. 			 public void setPublisher(String publisher)
  33. 			{
  34. 				 this.publisher= publisher;
  35. 			}
  36. 		    public String getPublisher()
  37. 			{
  38. 				return publisher;
  39. 			}
  40.  
  41.  
  42. 	public void doPost(HttpServletRequest request, HttpServletResponse response)
  43. 			throws ServletException, IOException {
  44.  
  45. 			// Obtain value of Catalog Id field to ve validated.
  46. 			String catalogId = request.getParameter("catalogId");
  47. 			String journal = request.getParameter("journal");
  48. 			String publisher = request.getParameter("publisher");
  49.  
  50. 			// set headers before accessing the Writer
  51. 			response.setContentType("text/xml");
  52. 			response.setHeader("Cache-Control", "no-cache");
  53.  
  54. 			PrintWriter out = response.getWriter();
  55.  
  56.  
  57. 			if(request.getParameter("catalogId") != null) 
  58. 			{
  59. 				setCatalogId(request.getParameter("catalogId"));
  60. 			}
  61.             else {
  62.                      setCatalogId(" ");
  63.             }
  64.  
  65. 			if(request.getParameter("journal") != null) 
  66. 			{
  67. 				setJournal(request.getParameter("journal"));
  68. 			}
  69.              else {
  70.                      setJournal(" ");
  71.              }
  72.  
  73. 			if(request.getParameter("publisher") != null) {
  74. 				setPublisher(request.getParameter("publisher"));
  75. 			}
  76.             else {
  77.                    setPublisher(" ");
  78.              }
  79.  
  80. 			// then write the response
  81. 			// If result set is empty set valid element to true
  82.  
  83. 		   response.getWriter().write("<catalog>" + "<catalogId>+getCatalogId()+</catalogId>" + "<journal>+getJournal()+</journal>" + "<publisher>+getPublisher()+</publisher>" + "</catalog>");
  84. 		}
  85. }
Without getter and setter methods the code is working fine..Can anyone find and solve the issue?

Expecting your Reply
Dave.
Last edited by peter_budo; Jul 25th, 2008 at 10:06 am. Reason: Keep It Organized - please use [code] tags
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peter_budo peter_budo is offline Offline
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Re: Can anyone make this code work?

 
-1
  #2
Jul 25th, 2008
Are you running this on Tomcat server?
What are you trying to achieve?
Are there any errors?
Learn to see in another's calamity the ills which you should avoid.
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(~100 BC)
LJC - London Java Community, Graduate & Undergraduate Software Development Community, JAVAWUG (Java Web User Group), The London Android Group
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Re: Can anyone make this code work?

 
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  #3
Aug 11th, 2008
i am not familiar with java servlets, but i doubt in following line:

req.send("catalogId="+ encodeURIComponent(catalogId.value));

i think it should be like this

req.send("catalogId="+ encodeURIComponent(catalogId.innerHTML));

please let me know if it works or not..
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dave_nithis dave_nithis is offline Offline
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Re: Can anyone make this code work?

 
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  #4
Aug 25th, 2008
hyyyyyyyyyyyyyyyyyyyyyy
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