A variable wrote inside a JSP function is not recognized

Question

this function is written inside the HEAD tag of a jsp file and i call it from inside the jsp BODY tag:

<%!
public void func1(String var1, String var2)
{
    String Name = var1 + "," + var2;
%>
    <input type='image' name=<%=Name%>
     src='somePath' onclick="submit()"/></br>
<%!
}
%>

i'm getting an error message: "cannot find symbol symbol: variable Name location: class SimplifiedJSPServlet"

any suggestion why Name is not recognized ? did i write it properly and placed it in the right place?

Obligatory reading: [How to avoid Java Code in JSP-Files?](http://stackoverflow.com/questions/3177733/how-to-avoid-java-code-in-jsp-files) — Reimeus, May 11 '14 at 14:12

score 3 · Accepted Answer · answered Jul 25 '12 at 17:26

3

It looks like your variable Name is only defined within the first scriplet segment. To declare as a class member variable use:

<%!
      String name;
%>

outside of any method scoping.

answered Jul 25 '12 at 17:26

Reimeus

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score 1 · Answer 2 · answered Jul 25 '12 at 18:08

<%!
public void func1(String var1, String var2)
{
    String Name = var1 + "," + var2;
    out.println("<input type='image' name='" + Name + "' src='somePath' onclick='submit()'/><br>");
}
%>

Then you can call the above method wherever you want in the JSP.

Ex: <%= func1("Text1", "Text2") %>

score 0 · Answer 3 · answered Jul 25 '12 at 17:49

Your variable is only in scope for the duration of the function call. To access the value you will need to do something like

request.setAttribute("name", name);

Inside your function (you could use pageContext or request - I don't know what scope you want.

Then outside your function you can simple do

<input type='image' name="${name}" />

A variable wrote inside a JSP function is not recognized

3 Answers3