request.getParameter value passing null

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mimsc mimsc is offline Offline
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request.getParameter value passing null

 
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  #1
Sep 11th, 2007
any suggestions...my "weatherState" value doesnt seem to be passing over:

1st jsp:

JSP Syntax (Toggle Plain Text) 
  1. <%
  2. Vector theStates = WeatherDAO.getWeatherStates();
  3. %>
  4.  
  5.  
  6. <html>
  7. <head>
  8. <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
  9. <title>Insert title here</title>
  10.  
  11. </script>
  12.  
  13. <body>
  14.  
  15.  
  16.  
  17.  
  18. <TR bgColor="#ffffff"><TD COLSPAN="2">
  19. <TABLE CELLPADDING="3" CELLSPACING="2">
  20. <TR><TD>
  21.  
  22. </FONT></CENTER><BR>
  23. <BR>
  24. <TABLE BORDER="0" CELLSPACING="5" CELLPADDING="5" WIDTH="100%">
  25. <TR BGCOLOR="#C0C0C0" ><TD COLSPAN="2" ALIGN="CENTER"> <FONT SIZE=+3><B> Weather Services</B></FONT>
  26. </TD></TR>
  27. </TABLE>
  28. <HR SIZE="3" NOSHADE>
  29. <font size=+1>Choose a state and press continue</font><br>
  30. <TR><TD> 
  31. <center>
  32.  
  33. <form name="form1" method="POST" action="/JAABA/jsp/cpanel/cp-weatherFive.jsp">
  34.  
  35. <label for="weatherState">State:</label>
  36.  
  37. <select name="weatherState" >
  38.  
  39. <% for (int i=0; i< theStates.size(); i++) {  %>
  40.  
  41. <OPTION VALUE><%=theStates.elementAt(i)%></OPTION>
  42.  
  43.  
  44.  
  45. <% 
  46. }
  47. %>

2nd jsp:

JSP Syntax (Toggle Plain Text) 
  1.  
  2. <%
  3. System.out.println("error...: "+request.getParameter("weatherState"));
  4. String sValue = request.getParameter("weatherState");
  5. Vector theCities = WeatherDAO.getWeatherCities(sValue);
  6. %>
  7.  
  8.  
  9. <html>
  10. <head>
  11. <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
  12. <title>Insert title here</title>
  13.  
  14.  
  15.  
  16. <body>
  17.  
  18.  
  19.  
  20.  
  21. <TR bgColor="#ffffff"><TD COLSPAN="2">
  22. <TABLE CELLPADDING="3" CELLSPACING="2">
  23. <TR><TD>
  24.  
  25. </FONT></CENTER><BR>
  26. <BR>
  27. <TABLE BORDER="0" CELLSPACING="5" CELLPADDING="5" WIDTH="100%">
  28. <TR BGCOLOR="#C0C0C0" ><TD COLSPAN="2" ALIGN="CENTER"> <FONT SIZE=+3><B> Weather Services</B></FONT>
  29. </TD></TR>
  30. </TABLE>
  31. <HR SIZE="3" NOSHADE>
  32. <font size=+1>Select the State and City for which you would like to receive weather information.</font><br>
  33. <TR><TD> 
  34. <center>
  35.  
  36.  
  37. <label for="weatherCity">City:</label>
  38.  
  39. <select name="weatherCity" > 
  40.  
  41. <% for (int i=0; i< theCities.size(); i++) {  %>
  42.  
  43. <OPTION VALUE=<%=theCities%>> <%=theCities.elementAt(i)%> </OPTION>
  44.  
  45. <% 
  46. }
  47. %>
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Re: request.getParameter value passing null

 
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  #2
Sep 12th, 2007
ha..no luck i guess
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Re: request.getParameter value passing null

 
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  #3
Sep 16th, 2007
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Originally Posted by mimsc View Post
JSP Syntax (Toggle Plain Text) 
  1. <select name="weatherState" >
It could probably be because you need to specify id for the select element. Some browsers pass data based on id, others based on the name attribute. To be safe, it is a good practice to define the id and the name.
JSP Syntax (Toggle Plain Text) 
  1. <select id="weatherState" name="weatherState" >
Javascript is not Java
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