public String execute()

in shiro-basic/src/main/java/org/apache/struts2/shiro/example/action/LoginAction.java [33:84]
46 lines of code
8 McCabe index (conditional complexity)

    public String execute()
    {
        String result = INPUT;

        if (shiroUser != null)
        {
            // Do some stuff with a Session
            Session session = shiroUser.getSession();
            session.setAttribute("MyUsername", username);
            log.info("Saving 'username' value to session [" + username + "]");

            // let's login the current user so we can check against roles and permissions:
            if (! shiroUser.isAuthenticated())
            {
                UsernamePasswordToken token = new UsernamePasswordToken(username, password);
                token.setRememberMe(true);
                try
                {
                    shiroUser.login(token);
                    result = SUCCESS;
                }
                catch (UnknownAccountException uae)
                {
                    addActionError("There is no user with username of '" + token.getPrincipal() + "'");
                    log.error(uae.getMessage());
                }
                catch (IncorrectCredentialsException ice)
                {
                    addActionError("Password for account '" + token.getPrincipal() + "' was incorrect!");
                    log.error(ice.getMessage());
                }
                catch (LockedAccountException lae)
                {
                    addActionError("The account for username '" + token.getPrincipal() + "' is locked.  " +
                            "Please contact your administrator to unlock it.");
                    log.error(lae.getMessage());
                }
                // ... catch more exceptions here (maybe custom ones specific to your application?
                catch (AuthenticationException ae)
                {
                    addActionError("An authentication exception has occurred trying to login user: " + token.getPrincipal());
                    log.error(ae.getMessage());
                }
            }
            else if (shiroUser.isAuthenticated())
            {
                result = SUCCESS;
            }
        }

        return result;
    }