Examples of org.apache.shiro.session.Session.removeAttribute()

org.apache.shiro.session.Session.removeAttribute()
Removes (unbinds) the object bound to this session under the specified {@code key} name. @param key the name uniquely identifying the object to remove @return the object removed or {@code null} if there was no object bound under the name{@code key}. @throws InvalidSessionException if this session has stopped or expired prior to callingthis method.




        //会话属性操作
        session.setAttribute("key", "123");
        Assert.assertEquals("123", session.getAttribute("key"));
        session.removeAttribute("key");
    }


}

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    }


    private void clearRunAsIdentities() {
        Session session = getSession(false);
        if (session != null) {
            session.removeAttribute(RUN_AS_PRINCIPALS_SESSION_KEY);
        }
    }


    private void pushIdentity(PrincipalCollection principals) throws NullPointerException {
        if (isEmpty(principals)) {

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    if (value != null) {
      Session session = currentUser.getSession();
      session.setAttribute(name, value);
    } else {
      Session session = currentUser.getSession(false);
      session.removeAttribute(name);
    }
  }
}

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   */
  @Override
  protected boolean onLoginSuccess(AuthenticationToken token, Subject subject, ServletRequest request, ServletResponse response) throws Exception {
    
    Session session = SystemVariableUtils.getSession();
    session.removeAttribute(getLoginIncorrectNumberKeyAttribute());
    session.setAttribute("sv", subject.getPrincipal());
    
    return super.onLoginSuccess(token, subject, request, response);
  }

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            PrincipalCollection existingPrincipals =
                    (PrincipalCollection) session.getAttribute(DefaultSubjectContext.PRINCIPALS_SESSION_KEY);


            if (isEmpty(currentPrincipals)) {
                if (!isEmpty(existingPrincipals)) {
                    session.removeAttribute(DefaultSubjectContext.PRINCIPALS_SESSION_KEY);
                }
                // otherwise both are null or empty - no need to update the session
            } else {
                if (!currentPrincipals.equals(existingPrincipals)) {
                    session.setAttribute(DefaultSubjectContext.PRINCIPALS_SESSION_KEY, currentPrincipals);

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                }
                //otherwise authc state matches - no need to update the session
            } else {
                if (existingAuthc != null) {
                    //existing doesn't match the current state - remove it:
                    session.removeAttribute(DefaultSubjectContext.AUTHENTICATED_SESSION_KEY);
                }
                //otherwise not in the session and not authenticated - no need to update the session
            }
        }
    }

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     * @param subject the subject for which any existing subject state will be removed from its session.
     */
    protected void removeFromSession(Subject subject) {
        Session session = subject.getSession(false);
        if (session != null) {
            session.removeAttribute(DefaultSubjectContext.AUTHENTICATED_SESSION_KEY);
            session.removeAttribute(DefaultSubjectContext.PRINCIPALS_SESSION_KEY);
        }
    }


    /**

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     */
    protected void removeFromSession(Subject subject) {
        Session session = subject.getSession(false);
        if (session != null) {
            session.removeAttribute(DefaultSubjectContext.AUTHENTICATED_SESSION_KEY);
            session.removeAttribute(DefaultSubjectContext.PRINCIPALS_SESSION_KEY);
        }
    }


    /**
     * Removes any existing subject state from the subject's session (if the session exists).

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    }


    private void clearRunAsIdentities() {
        Session session = getSession(false);
        if (session != null) {
            session.removeAttribute(RUN_AS_PRINCIPALS_SESSION_KEY);
        }
        this.runAsPrincipals = null;
    }


    private void pushIdentity(PrincipalCollection principals) throws NullPointerException {

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                session.setAttribute(RUN_AS_PRINCIPALS_SESSION_KEY, this.runAsPrincipals);
            } else {
                //deque is empty, remove it from the session:
                session = getSession(false);
                if (session != null) {
                    session.removeAttribute(RUN_AS_PRINCIPALS_SESSION_KEY);
                }
            }
        }


        return popped;

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