[Java]MVC방식에 FrontController pattern 적용

1.index.html

2.Front.java

package web;
import java.io.IOException;
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("/test/*")
/*
* mapping url pattern
* "/*" : 모든 요청
* "*.do" : 확장자가 do인 요청
* "/board/*" : /board/로 시작하는 요청
*/
public class Front extends HttpServlet {
private static final long serialVersionUID = 1L;
private boolean isRedirect = false;
private String view;
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
String contextPath = request.getContextPath();
// System.out.println("contextPath:"+contextPath);
String url = request.getRequestURI();
// System.out.println("url:"+url);
String command = url.substring(contextPath.length());
// System.out.println("command:"+command);
if(command.equals("/test/first")){
this.view = "/view/first_view.jsp";
}else if(command.equals("/test/second")){
this.isRedirect = true;
this.view = "/view/second_view.jsp";
}
if(this.isRedirect){
response.sendRedirect(contextPath+view);
}else{
request.getRequestDispatcher(view).forward(request, response);
}
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doGet(request, response);
}
}

3.first/second_view.jsp

생성

몇개의 서블릿이 중앙 집중식으로 모든요청을 다 받아서 처리하는 방식

대표적인 Front Controller Pattern : Spring

[solution gear]solutiongear - Jamo