I am in the process of building a web application using JSP. One of the servlet classes I have created is as follows:
package managesystem;
import java.util.List;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.google.gson.Gson;
public class getUsernamesServlet extends HttpServlet{
/**
*
*/
private static final long serialVersionUID = 1L;
public void doGet(HttpServletRequest req, HttpServletResponse resp){
List<String> usernamesList = StudentManager.findAllUsernames();
req.setAttribute("usernames", new Gson().toJson(usernamesList));
}
}
My query pertains to how I can use Ajax to verify the availability of a username (checking against the list) and display JSON data written by the servlet in a file like register.jsp. Any guidance on this topic would be greatly appreciated.
Warm regards,
h4