중복 로그인 - alert
2022. 2. 22. 16:45ㆍspring
EgovHttpSessionBindingListener.java
package egovframework.com.cmm.util;
import java.util.HashMap;
import java.util.Map;
import javax.servlet.http.HttpSession;
import javax.servlet.http.HttpSessionBindingEvent;
import javax.servlet.http.HttpSessionBindingListener;
public class EgovHttpSessionBindingListener implements HttpSessionBindingListener {
public static Map<String, String> expireUserMap = new HashMap<>();
@Override
public void valueBound(HttpSessionBindingEvent event) {
if (EgovMultiLoginPreventor.findByLoginId(event.getName())) { // 중복 로그인
HttpSession expireSession = EgovMultiLoginPreventor.loginUsers.get(event.getName());
expireUserMap.put(expireSession.toString(), "Y");
} else {
expireUserMap.put(event.getSession().toString(), "N");
}
EgovMultiLoginPreventor.loginUsers.put(event.getName(), event.getSession());
}
@Override
public void valueUnbound(HttpSessionBindingEvent event) {
EgovMultiLoginPreventor.loginUsers.remove(event.getName(), event.getSession());
}
}
EgovMultiLoginPreventor.java
package egovframework.com.cmm.util;
import java.util.Enumeration;
import java.util.concurrent.ConcurrentHashMap;
import javax.servlet.http.HttpSession;
public class EgovMultiLoginPreventor {
public static ConcurrentHashMap<String, HttpSession> loginUsers = new ConcurrentHashMap<String, HttpSession>();
public static boolean findByLoginId(String loginId) {
return loginUsers.containsKey(loginId);
}
public static void invalidateByLoginId(String loginId) {
Enumeration<String> e = loginUsers.keys();
while (e.hasMoreElements()) {
String key = (String) e.nextElement();
if (key.equals(loginId)) {
loginUsers.get(key).invalidate();
}
}
}
}
EgovSessionAspect.java
@Aspect
@Component
@Slf4j
public class EgovSessionAspect {
/**
* 세션 체크
*
* @param joinPoint
* @return
* @throws Throwable
*/
@Around("execution(public * ocps..*Controller.*(..))")
public Object checkSession(ProceedingJoinPoint joinPoint) throws Throwable {
HttpServletRequest request = ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest();
HttpServletResponse response = ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getResponse();
String methodName = joinPoint.getSignature().getName();
String fullClassName = joinPoint.getSignature().toShortString();
Object[] args = joinPoint.getArgs();
ModelMap modelMap = null;
int pos = 0;
for (Object object : args) {
if (object instanceof ModelMap) {
modelMap = (ModelMap) object;
break;
}
pos++;
}
if (modelMap != null) {
SessionVO sessionVO = (SessionVO) EgovUserDetailsHelper.getAuthenticatedUser();
modelMap.addAttribute("sessionVO", sessionVO);
// 중복 로그인 체크
if (sessionVO != null && !MapUtils.isEmpty(EgovHttpSessionBindingListener.expireUserMap)) {
HttpSession session = request.getSession();
String expireYn = EgovHttpSessionBindingListener.expireUserMap.get(session.toString());
if ("Y".equals(expireYn)) { // 중복 로그인 발생
EgovHttpSessionBindingListener.expireUserMap.remove(session.toString());
session.invalidate(); // 기존 사용자 세션 invalidate()
response.setContentType("text/html;charset=utf-8");
PrintWriter printwriter = response.getWriter();
printwriter.println("<html>");
printwriter.println("<script type=\"text/javaScript\">");
printwriter.println("alert('중복 로그인이 발생하여 로그아웃 되었습니다.')");
printwriter.println("window.location = '/main.do';");
printwriter.println("</script>");
printwriter.println("</html>");
printwriter.flush();
printwriter.close();
}
}
}
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