개발/Web Development

web.xml 거치지 않고 Servlet 내에서 해결하기

Halkrine 2012. 8. 28. 18:52

exerDispatcher.java


package ex01.ex01;


import java.io.IOException;

import java.util.ArrayList;

import java.util.HashMap;


import javax.servlet.ServletException;

import javax.servlet.annotation.WebServlet;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

/**

 * Servlet implementation class exerDispathcer

 */


public class exerDispatcher extends HttpServlet {

private static final long serialVersionUID = 1L;

HashMap map = new HashMap();

       

    /**

     * @see HttpServlet#HttpServlet()

     */

    public exerDispatcher() {

         

     map.put("/EleServlet.im", new EleServlet());

       //     map.put("", new ());



    }


/**

 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)

 */

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

doPostGet(request,response);


}


/**

 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)

 */

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

doPostGet(request,response);

}

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

String path = request.getServletPath();

System.out.println(path);

defaultAction action = (defaultAction)map.get(path);

System.out.println(action+" <= is path mapping");

String result = action.execute(request,response);


request.getRequestDispatcher(result).forward(request, response);

}

public void test() throws ClassNotFoundException, InstantiationException, IllegalAccessException{

Class clz = Class.forName("ex01.ex01.EightthServlet");

EightthServlet test= (EightthServlet)clz.newInstance();

test.myExecute();

}


} 


DefaultAction.java


package ex01.ex01;


import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;


public interface defaultAction {


public String execute(HttpServletRequest request, HttpServletResponse response);

} 


EleServlet.java


package ex01.ex01;


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;


/**

 * Servlet implementation class EightthServlet

 */

@WebServlet("/EleServlet")

public class EleServlet implements defaultAction{

private String id = null;

public String execute(HttpServletRequest request, HttpServletResponse response){

String result = null;

System.out.println("EleServlet loaded");

String id = request.getParameter("id");

result = "jsp/EleServletjsp.jsp";

return result;

}

} 


web.xml


  <servlet>

    <description></description>

    <display-name>FirstServlet</display-name>

    <servlet-name>FirstServlet</servlet-name>

    <servlet-class>ex01.ex01.exerDispatcher</servlet-class>

  </servlet>

  <servlet-mapping>

    <servlet-name>FirstServlet</servlet-name>

    <url-pattern>*.im</url-pattern>

  </servlet-mapping>

  

</web-app>