●プログラム・リスト●

※LogoutServlet.javaのソースコード

package jp.tuyano;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.*;

import com.google.appengine.api.users.*;

public class LogoutServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;

	@Override
	protected void doGet(HttpServletRequest req, HttpServletResponse resp)
			throws ServletException, IOException {
		UserService service = UserServiceFactory.getUserService();
		String url = req.getRequestURI();
		String logouturl = service.createLogoutURL("/public.html");
		resp.sendRedirect(logouturl);
	}
	
}


※web.xmlへの追記


<filter>
	<filter-name>logincheck</filter-name>
	<filter-class>jp.tuyano.LoginCheckFilter</filter-class>
</filter>
<filter-mapping>
	<filter-name>logincheck</filter-name>
	<url-pattern>/private.jsp</url-pattern>
</filter-mapping>    
    
<servlet>
	<servlet-name>logout</servlet-name>
	<servlet-class>jp.tuyano.LogoutServlet</servlet-class>
</servlet>
<servlet-mapping>
	<servlet-name>logout</servlet-name>
	<url-pattern>/logout</url-pattern>
</servlet-mapping>