Configuration
WebContent/WEB-INF/config.properties
/bbs.do=com.mvc.bbs.BoardAction
/guest.do=com.mvc.guest.GuestAction
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WebContent/WEB-INF/web.xml
<servlet>
<servlet-name>my</servlet-name>
<servlet-class>com.mvc.MyServlet</servlet-class>
<init-param>
<param-name>config</param-name>
<param-value>/WEB-INF/config.properties</param-value>
</init-param>
</servlet>
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CONTROLER
com.mvc.MyServlet.java
public class MyServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
private Map<String, Object> map = new Hashtable<String, Object>();
public void init(ServletConfig config) throws ServletException {
super.init(config);
ServletContext context = getServletContext();
// web.xml 의 servlet 태그안의 init-param 값 읽어오기
String pathname = config.getInitParameter("config");
if (pathname == null) {
return;
}
pathname = context.getRealPath(pathname);
try {
// properties 파일에 저장된 내용을 Properties 객체에 저장
Properties prop = new Properties();
FileInputStream fis = null;
fis = new FileInputStream(pathname);
// 파일의 내용을 읽어 Properties 객체에 저장
prop.load(fis);
fis.close();
// Properties 객체에 저장된 클래스의 객체를 생성 map에 저장
Iterator<Object> it = prop.keySet().iterator();
while (it.hasNext()) {
String key = (String) it.next();
String className = prop.getProperty(key);
Class<?> cls = Class.forName(className);
Object ob = cls.newInstance();
map.put(key, ob);
}
} catch (Exception e) {
System.out.println(e);
}
}
public void destroy() {
}
protected void doGet(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
process(req, resp);
}
protected void doPost(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
process(req, resp);
}
protected void process(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
MyAction action = null;
try {
String uri = req.getRequestURI();
if (uri.indexOf(req.getContextPath()) == 0) {
uri = uri.substring(req.getContextPath().length());
action = (MyAction) map.get(uri);
action.execute(req, resp);
}
} catch (Exception e) {
System.out.println(e);
}
}
}
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MODEL
com.mvc.MyAction.java
public abstract class MyAction {
public abstract void execute(HttpServletRequest req,
HttpServletResponse resp) throws ServletException, IOException;
public void forward(HttpServletRequest req, HttpServletResponse resp,
String path) throws ServletException, IOException {
RequestDispatcher rd = req.getRequestDispatcher(path);
rd.forward(req, resp);
}
}
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com.mvc.BoardAction.java
public class BoardAction extends MyAction {
public void execute(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
String mode = req.getParameter("mode");
if (mode == null || mode.equals("list")) {
forward(req, resp, "/mvc/bbs/list.jsp");
} else if (mode.equals("created")) {
forward(req, resp, "/mvc/bbs/created.jsp");
}
}
}
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com.mvc.GuestAction.java
public class GuestAction extends MyAction {
public void execute(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
String mode = req.getParameter("mode");
if (mode == null || mode.equals("guest")) {
forward(req, resp, "/mvc/guest/guest.jsp");
}
}
}
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VIEW
root/mvc/bbs/list.jsp
<body>
<a href="<%=cp%>/bbs.do">게시판</a>
<a href="<%=cp%>/guest.do">방명록</a><br/>
게시판 리스트입니다.<br/>
<a href="<%=cp%>/bbs.do?mode=created">글쓰기</a>
</body>
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root/mvc/guest/created.jsp
<body>
<a href="<%=cp%>/bbs.do">게시판</a>
<a href="<%=cp%>/guest.do">방명록</a><br/>
게시판 글쓰기입니다.<br/>
</body>
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root/mvc/guest/guest.jsp
<body>
<a href="<%=cp%>/bbs.do">게시판</a>
<a href="<%=cp%>/guest.do">방명록</a><br/>
방명록입니다.<br/>
</body>
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