Question

Hello Friends, Plz help me to figure out what my problem is?(jsp code)
thanks =)

Answer 1

in my JSP page, I created a cell whose image source I want to get from servlet. I put the link tag to ask servlet for imgSrc, but it does not work . Please show me how to change the imgSrc in JSP page using servlet. I want the JSP to merely show the result, not a dispatch to another page.
here is my code :
Zbody>
<form action="testServlet.java">
<TABLE border="0" align="center">
<TR height="40">
<TD width="40"><a href="Hoda/testServlet?direction=b"><img
src=<%=request.getAttribute("imgSrc")%> width="40" height="40" /></a></TD>
</form>
</body>
SERVLET:
@WebServlet("/testServlet")
public class testServlet extends HttpServlet {
String imgSrc = "red.png";
protected void service(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IO
hoda_mahmoodi: HttpServletResponse response) throws ServletException, IOException {
String str = request.getParameter("direction");
if (str.startsWith("b")) {
imgSrc = "black.png";
}
request.setAttribute("imgSrc", imgSrc);
}
}