how to read value of <a> tag in servlet

[gayatri umesh]

  <a href="ProductController?selectedValue=A" target="right">A</a>
  

In servlet, i gave this

   
String value=request.getParameter("selectedValue"); 
System.out.println(value);

Nothing is printed....kindly help......

[Max Rahder]

Your code should work. If nothing is printed, not even "null", then you probably aren't getting to your servlet at all. If you set a break point in the servlet, is it hit? If not, your web.xml URL mapping may be wrong. (Or some other mapping file, if you're using something like Struts.)

[Paul Clapham]

What do you mean when you say "printed"? In most cases, System.out.println() in a servlet will write to a log file somewhere in the servlet container. Did you expect "A" to show up in the generated HTML? Or what?

[Sebastian Janisch]

Use

PrintWriter out = response.getWriter();

out.print("");

if you want to return text to the client.

[gayatri umesh]

When i run the jsp, and click the link 'A', it goes to the ProductController servlet....but nothing is displayed....

[gayatri umesh]

i gave System.out.println() and the output prints in the console..I am using RAD..I tried displaying the value using PrintWriter object also....

[Sebastian Janisch]

Try to see what parameters come in.

First output a hard coded literal to see if the servlet gets executed.

Then do Enumeration<String> params = request.getParameterNames();

iterate over that Enumeration and see what comes up.

[Shruthi Sam]

Hey,
Its working for me... check once again

Here is the code i tried...

  String s= req.getParameter("selectedValue");
	System.out.println("the value is : "+s);
	res.setContentType("text/html");
	PrintWriter out = res.getWriter();
	out.println("Selected Value is :"+s);