get data from dropdownlist and print

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<html>
   <script language="javascript" type="text/javascript">
   fun();
   {

       <%
       try{
       GetMenuData gm = new GetMenuData();
       String str =gm.displayData(request.getParameter("menuitems");
        System.out.println(str);
        }
       catch(Exception exp)
       {System.out.println(exp.getMessage());}
       %>
       out.println(str);
   }

 </script>

<head>
<title>Insert title here</title>
</head>
<body>
<form name="from1" action="index.jsp" method="get">
<input type =text name="urltext">
Listed menu:
<select name="menuitems" onChange="selectChanged(this);">
<option>select...   </option>
<option value = "Products">Products</option>
<option value="Solutions">Solutions</option>
<option value="Views">Views</option>
<option value="Services">Services</option>
<option value="About">About</option>
<option value="Support">Support</option>

</select>

<br/><br/>


 </form>
 <input type="submit" name="btn" value="submit" onclick="fun()">
</body>
</html>

here,i want to print the drop down items ,which print null..anybody please help me out?

Posted 9-Jul-13 23:04pm

chinta123

Updated 10-Jul-13 6:58am

v2

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JasminHan · Answer 1 · 2013-07-12T00:21:00

Hello!

After reading your question, I think it has some issues. I cannot think what is your purpose of using Scriptlet code in this page. You cannot use "request.getParameter()" method, before the form is submitted. There is no way to use html values in scriptlet. But, you can use scriptlet values in HTML tags. For your code, I would suggest to move the scriptlet code to server side. Then, it gonna be ok. Here's my sample code for you...^^
In index.jsp,

HTML

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
	<form action="servletUrl" method="get">
		<input type=text name="urltext"> Listed menu: 
		<select	name="menuitems" onChange="selectChanged(this);">
			<option>select...</option>
			<option value="Products">Products</option>
			<option value="Solutions">Solutions</option>
			<option value="Views">Views</option>
			<option value="Services">Services</option>
			<option value="About">About</option>
			<option value="Support">Support</option>
		</select> 
		<br />
		<br />
		<input type="submit" name="btn" value="submit">
	</form>
	
</body>
</html>

In java class,

Java

protected void doGet(HttpServletRequest request,
        HttpServletResponse response) throws ServletException, IOException {
    try{
        GetMenuData gm = new GetMenuData();
        String str = gm.displayData(request.getParameter("menuitems"));
        System.out.println(str);
    }catch (Exception exp) {
        System.out.println(exp.getMessage());
    }
}