* 한빛 헤드 퍼스트 교재 참조
* 작업을 들어가기전 해당 교재나 또는 개발, 배포 디렉토리 설정 같은게 필요 합니다.
(구길에 가믄 더 좋은 형태? 로 볼 수 있네염.... )
[ web.xml ]
* 실 적용시 주석은 삭제
<web-app xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"
version="2.4">
<servlet>
<servlet-name>MVC Beer</servlet-name> <!-- 이 서블릿이름으로 매핑처리 하단 메핑과 동일 하다 -->
<servlet-class>com.example.web.BeerSelect</servlet-class> <!-- 서블릿 클래스의 완전한 이름 -->
</servlet>
<servlet-mapping>
<servlet-name>MVC Beer</servlet-name>
<url-pattern>/SelectBeer.do</url-pattern> <!-- 클라이언트가 사용할 이름 .do 는 무의미 -->
</servlet-mapping>
</web-app>
< Servlet 1단계 형태 >
[ BeerSelect.java ]
// 개발 환경, 배포 환경 디렉토리와 일치 해야 합니다.
package com.example.web;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
public class BeerSelect extends HttpServlet {
public void doPost(HttpServletRequest request,
HttpServletResponse response)
throws IOException, ServletException {
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out.println("Beer Selection Advice<br />");
String c = request.getParameter("color");
out.println("<br />Got beer color " + c);
}
}
< Servlet 2단계 형태 > model 구현
[ BeerSelect.java ]
package com.example.web;
import com.example.model.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
public class BeerSelect extends HttpServlet {
public void doPost(HttpServletRequest request,
HttpServletResponse response)
throws IOException, ServletException {
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out.println("Beer Selection Advice<br />");
String c = request.getParameter("color");
out.println("<br />Got beer color " + c);
BeerExpert be = new BeerExpert();
List result = be.getBrands(c);
Iterator it = result.iterator();
while(it.hasNext()) {
out.println("<br />try: " + it.next());
}
}
}
[ BeerExpert.java ]
package com.example.model;
import java.util.*;
public class BeerExpert
{
public List getBrands(String color)
{
List brands = new ArrayList();
if (color.equals("amber"))
{
brands.add("Jack Amber");
brands.add("Red Moose");
}
else {
brands.add("Jail Pale Ale");
brands.add("Gout Stout");
}
return(brands);
}
}
< Servlet 3단계 형태 > jsp view 구현
[ BeerSelect.java ]
// 개발 환경, 배포 환경 디렉토리와 일치 해야 합니다.
package com.example.web;
import com.example.model.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
public class BeerSelect extends HttpServlet {
public void doPost(HttpServletRequest request,
HttpServletResponse response)
throws IOException, ServletException {
/* response.setContentType("text/html");
PrintWriter out = response.getWriter();
out.println("Beer Selection Advice<br />");
*/
String c = request.getParameter("color");
// out.println("<br />Got beer color " + c);
BeerExpert be = new BeerExpert();
List result = be.getBrands(c);
request.setAttribute("styles", result);
RequestDispatcher view =
request.getRequestDispatcher("result.jsp");
view.forward(request, response);
/* Iterator it = result.iterator();
while(it.hasNext()) {
out.println("<br />try: " + it.next());
} */
}
}
[ result.jsp ]
<%@ page import="java.util.*" %>
<html>
<body>
<h1 align="center">Beer Recommendations JSP</h1>
<p>
<%
List styles = (List)request.getAttribute("styles");
Iterator it = styles.iterator();
while(it.hasNext()) {
out.print("<br>try: " + it.next());
}
%>
</body>
</html>