HelloWorld.java > MODEL

package controller;

import java.io.IOException;

import javax.servlet.RequestDispatcher;

import javax.servlet.ServletException;

import javax.servlet.annotation.WebServlet;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

@WebServlet("/HelloWorld")

public class HelloWorld extends HttpServlet {

protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

reqPro(request, response);

}

protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

reqPro(request, response);

}

protected void reqPro(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

String str = "Hello World ~ 안녕하세요~";

request.setAttribute("str", str);

RequestDispatcher rdis = request.getRequestDispatcher("hello_world.jsp");

rdis.forward(request, response);

}

}