RootController.java 文件源码

@RequestMapping(value = Constants.Url.LOGIN, method = RequestMethod.GET)
public String showLoginPage(@RequestParam(value = Constants.RequestParam.ERROR, required = false) Boolean error,
                            @RequestParam(value = Constants.RequestParam.LOGOUT, required = false) Boolean logout,
                            Model model) {
    SecurityContext securityContext = SecurityContextHolder.getContext();
    if (securityContext != null) {
        Authentication authentication = securityContext.getAuthentication();
        if (authentication != null && !(authentication instanceof AnonymousAuthenticationToken)) {
            return Constants.Url.REDIRECT + Constants.Url.ROOT;
        }
    }
    if (error != null) {
        model.addAttribute(Constants.ModelAttribute.ERROR, Constants.Messages.PAGE_LOGIN_ERROR_INVALID_USERNAME_AND_PASSWORD);
    }
    if (logout != null) {
        model.addAttribute(Constants.ModelAttribute.LOGOUT, Constants.Messages.PAGE_LOGIN_MESSAGE_LOGOUT);
    }
    return Constants.View.LOGIN;
}