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DBILITY
vaadin session 실습 본문
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httpSession(?)를 사용해 봤다면, 별다른 어려움은 없다.
package com.dbility.vseminar.vaadin_seminar.util;
import java.util.Random;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class RandomUtil {
private static final Logger logger = LoggerFactory.getLogger(RandomUtil.class);
private static final String AB = "0123456789abcdefghijklmnopqrstuvwxyz";
private static final int LEN = 20;
private static Random rnd = new Random();
public static String randomKey(){
StringBuilder sb = new StringBuilder( LEN );
for( int i = 0; i < LEN; i++ )
sb.append( AB.charAt( rnd.nextInt(AB.length()) ) );
return sb.toString().substring(0,4)+"-"+sb.toString().substring(4,12)+"-"+sb.toString().substring(12,16)+"-"+sb.toString().substring(16,20);
}
}
package com.dbility.vseminar.vaadin_seminar;
import java.util.Random;
import java.util.Set;
import javax.servlet.annotation.WebServlet;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.dbility.vseminar.vaadin_seminar.util.RandomUtil;
import com.vaadin.annotations.Theme;
import com.vaadin.annotations.Title;
import com.vaadin.annotations.VaadinServletConfiguration;
import com.vaadin.server.VaadinRequest;
import com.vaadin.server.VaadinService;
import com.vaadin.server.VaadinServlet;
import com.vaadin.server.WrappedSession;
import com.vaadin.ui.Alignment;
import com.vaadin.ui.Button;
import com.vaadin.ui.HorizontalLayout;
import com.vaadin.ui.Label;
import com.vaadin.ui.UI;
import com.vaadin.ui.themes.ValoTheme;
/**
* This UI is the application entry point. A UI may either represent a browser window
* (or tab) or some part of an HTML page where a Vaadin application is embedded.
* <p>
* The UI is initialized using {@link #init(VaadinRequest)}. This method is intended to be
* overridden to add component to the user interface and initialize non-component functionality.
*/
@SuppressWarnings("serial")
@Title("vseminar")
@Theme("vseminar")
public class VSeminarUI extends UI {
private static final Logger logger = LoggerFactory.getLogger(VSeminarUI.class);
@Override
protected void init(VaadinRequest vaadinRequest) {
VaadinRequest request = VaadinService.getCurrentRequest();
final WrappedSession session = request.getWrappedSession();
//WrappedSession session = vaadinRequest.getWrappedSession();
final HorizontalLayout layout = new HorizontalLayout();
layout.setSizeUndefined();
layout.setSpacing(true);
layout.setMargin(true);
if(session == null) {
logger.debug("{}", session);
} else {
Set<String> set = session.getAttributeNames();
for (String str : set) {
logger.debug("{}", str);
}
logger.debug("{}", session.getId());
logger.debug("{}", session.getLastAccessedTime());
logger.debug("{}", session.getMaxInactiveInterval());
logger.debug("{}", session.getAttribute("VSeminarUIServlet.lock"));
logger.debug("{}", session.getAttribute("com.vaadin.server.VaadinSession.VSeminarUIServlet"));
if(session.getAttribute("SESSID")==null) {
logger.debug("{}", "로그인해야지");
Label message = new Label("message");
message.setSizeUndefined();
message.setStyleName(ValoTheme.LABEL_H1);
message.setStyleName(ValoTheme.LABEL_COLORED);
message.setValue("로그인해야지");
layout.addComponent(message);
Button signon = new Button("SignOn");
signon.setSizeUndefined();
signon.setStyleName(ValoTheme.BUTTON_PRIMARY);
signon.addClickListener(e->{
session.setAttribute("SESSID", RandomUtil.randomKey());
getPage().reload();
});
layout.addComponent(signon);
layout.setComponentAlignment(signon, Alignment.BOTTOM_LEFT);
} else {
logger.debug("{}", session.getAttribute("SESSID"));
Label userName = new Label();
userName.setSizeUndefined();
userName.setStyleName(ValoTheme.LABEL_H1);
userName.setStyleName(ValoTheme.LABEL_COLORED);
userName.setValue(session.getAttribute("SESSID").toString());
layout.addComponent(userName);
Button signout = new Button("SignOut");
signout.setSizeUndefined();
signout.setStyleName(ValoTheme.BUTTON_PRIMARY);
signout.addClickListener(e->{
session.invalidate();
getPage().reload();
});
layout.addComponent(signout);
layout.setComponentAlignment(signout, Alignment.BOTTOM_LEFT);
}
}
setContent(layout);
}
@WebServlet(urlPatterns = "/*", name = "VSeminarUIServlet", asyncSupported = true)
@VaadinServletConfiguration(ui = VSeminarUI.class, productionMode = false)
public static class VSeminarUIServlet extends VaadinServlet {
}
}
DEBUG c.d.v.vaadin_seminar.VSeminarUI 59 - com.vaadin.server.VaadinSession.VSeminarUIServlet
DEBUG c.d.v.vaadin_seminar.VSeminarUI 59 - VSeminarUIServlet.lock
DEBUG c.d.v.vaadin_seminar.VSeminarUI 61 - 899B4274096E44A3B85FA458C9D114D2
DEBUG c.d.v.vaadin_seminar.VSeminarUI 62 - 1529222087140
DEBUG c.d.v.vaadin_seminar.VSeminarUI 63 - 1800
DEBUG c.d.v.vaadin_seminar.VSeminarUI 64 - java.util.concurrent.locks.ReentrantLock@26165440[Locked by thread http-nio-8080-exec-7]
DEBUG c.d.v.vaadin_seminar.VSeminarUI 65 - com.vaadin.server.VaadinSession@3cd44bdd
DEBUG c.d.v.vaadin_seminar.VSeminarUI 68 - 로그인해야지
DEBUG c.d.v.vaadin_seminar.VSeminarUI 59 - com.vaadin.server.VaadinSession.VSeminarUIServlet
DEBUG c.d.v.vaadin_seminar.VSeminarUI 59 - VSeminarUIServlet.lock
DEBUG c.d.v.vaadin_seminar.VSeminarUI 59 - SESSID
DEBUG c.d.v.vaadin_seminar.VSeminarUI 61 - 899B4274096E44A3B85FA458C9D114D2
DEBUG c.d.v.vaadin_seminar.VSeminarUI 62 - 1529222101097
DEBUG c.d.v.vaadin_seminar.VSeminarUI 63 - 1800
DEBUG c.d.v.vaadin_seminar.VSeminarUI 64 - java.util.concurrent.locks.ReentrantLock@26165440[Locked by thread http-nio-8080-exec-1]
DEBUG c.d.v.vaadin_seminar.VSeminarUI 65 - com.vaadin.server.VaadinSession@3cd44bdd
DEBUG c.d.v.vaadin_seminar.VSeminarUI 86 - lksz-02b2jahl-ptw9-8v9p
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