jsp, java servlet and drl file
voxy Apr 7, 2010 3:38 PMHi guys,
I am trying to create a web page with a form, so when we click on submit, we are redirected to the result web page, but the content of this page will be generated according to the rules i created in my drl file. Does anyone knows the easiest way to do this? are they a way to call the drl file from the jsp file, or the servlet file?
For now, i created a very simple form i put in my index.jsp file :
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<form action="GreetingServlet" method="POST">
First Name: <input type="text" name="firstName" size="20"><br>
Surname: <input type="text" name="surname" size="20">
<br><br>
<input type="submit" value="Submit">
</form>
</body>
</html>
And a java servlet file
package com.test1.servlet;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class NameServlet extends javax.servlet.http.HttpServlet implements javax.servlet.Servlet {
public NameServlet() {
super();
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
String firstName = request.getParameter("firstName").toString();
String surname = request.getParameter("surname").toString();
out.println("<html>");
out.println("<head>");
out.println("<title>Servlet NameServlet</title>");
out.println("</head>");
out.println("<body>");
out.println("<h1>Servlet NameServlet at " + request.getContextPath () + "</h1>");
out.println("<p>Welcome " + firstName + " " + surname + "</p>");
out.println("</body>");
out.println("</html>");
out.close();
}
}
But i would like to add a drl rule's file as:
rule "HeeloVoxy"
dialect "mvel"
when
surname == "Voxy"
then
System.out.println( "Hi voxy, it works!");
end
so i could decide using the rules what page or what content display.
Any idea?
thanks for any answer