Java Reference
In-Depth Information
A login page with a Servlet
Concretely, a Servlet is a Java class that implements the Servlet interface directly or
indirectly. The following code represents an example of a Servlet that returns a con-
nection interface to the user and redirects it to another interface after validating its
input:
@WebServlet(name = "connexionServlet",
urlPatterns = {"/connexionServlet"})
public class ConnexionServlet extends
HttpServlet {
Logger logger =
Logger.getLogger(ConnexionServlet.class.getName());
protected void
processRequest(HttpServletRequest request,
HttpServletResponse response) {
response.setContentType("text/
html;charset=UTF-8");
try (PrintWriter out =
response.getWriter();){
out.println("<!DOCTYPE html>");
out.println("<html>");
out.println("<head>");
out.println("<title>Online
pre-registration site</title>");
out.println("</head>");
out.println("<body>");
out.write(" <form
method=\"post\">");
out.write(" <h4>Your
name</h4>");
out.write(" <input
type=\"text\" name=\"param1\" />");
out.write(" <h4>Your
password</h4>");
out.write(" <input
