Hi,
I'm experimenting with using annotations. I created a Servlet with
annotations and then attempt to get the init parameters in the doGet()
method, but I keep getting a null value when I use
this.getServletConfig(). If I save the ServletConfig in an instance
variable from the init() method it works as expected. Shouldn't the
this.getServletConfig() return the configuration object instead of a null?
What am I missing?
Here is a listing. The code is also attached. I've run it both with and
without a web.xml file (just the root element when present).
@WebServlet(
name="myservlet",
urlPatterns={"/"},
initParams={
@WebInitParam(name="name", value="Richard"),
@WebInitParam(name="greeting", value="Hola")
}
)
public class TheServlet extends HttpServlet {
ServletConfig myConfig;
public void init(ServletConfig config) throws ServletException{
myConfig = config;
}
protected void doGet(HttpServletRequest request, HttpServletResponse
response) throws ServletException, IOException {
// Set content type
response.setContentType("text/plain");
// Get initialization parameters
//ServletConfig config = this.getServletConfig();
//^^^^^^^^^^^^^^ The above returns null ^^^^^^^^
ServletConfig config = myConfig;
//^^^^^^^The above works ^^^^^^^^
if(config != null){
String name = config.getInitParameter("name");
String greeting = config.getInitParameter("greeting");
response.getWriter().println(greeting + " " +name);
}else{
response.getWriter().println("there is no config");
}
}
}
Thanks in advance!
Richard
--
Richard Monson-Haefel
https://twitter.com/rmonson
https://www.linkedin.com/in/monsonhaefel/
