import java.util.Enumeration;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class FirstServlet extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, java.io.IOException {
//set the MIME type of the response to "text/html"
response.setContentType("text/html");
//use a PrintWriter send text data to the client
java.io.PrintWriter out = response.getWriter();
//output the HTML content
out.println("");
out.println("Help Page ");
out.println("Please submit your information
");
//make sure method="post" so that the servlet service method
//calls doPost in the response to this form submit
out.println("
out.println("");
out.println("Your first name: ");
out.println("");
out.println(" ");
out.println("Your last name: ");
out.println("");
out.println(" ");
out.println("Your email: ");
out.println("");
out.println(" ");
out.println("
out.println("");
out.println("");
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, java.io.IOException {
//display the parameter names and values
Enumeration paramNames = request.getParameterNames();
String parName;
boolean emptyEnum = false;
if (!paramNames.hasMoreElements())
emptyEnum = true;
//set the MIME type of the response to "text/html"
response.setContentType("text/html");
//use a PrintWriter send text data to the client
java.io.PrintWriter out = response.getWriter();
//Begin assembling the HTML content
out.println("");
out.println("Submitted Parameters ");
if (emptyEnum) {
out.println("No parameters
");
} else {
out.println("Here are the submitted parameter values
");
}
while (paramNames.hasMoreElements()) {
parName = (String) paramNames.nextElement();
out.println("" + parName + " : "
+ request.getParameter(parName));
out.println("
}
out.println("");
}
}