CustomFailureHandler.java 文件源码

@Override
public void onAuthenticationFailure(HttpServletRequest request, HttpServletResponse response,
        AuthenticationException exception) throws IOException, ServletException {
    System.out.println("failure");
    String targetUrl = "";
    if(exception instanceof BadCredentialsException){
        targetUrl = "/login.html?error=" + exception.getMessage();
    }
    else {
        targetUrl = "/login.html?error=" + true;
    }

    if (response.isCommitted()) {
            System.out.println("Internal problem in redirection");
            return;
    }

    redirectStrategy.sendRedirect(request, response, targetUrl);
}