我想用lang来标记languages.In认证的过程，这个参数丢失了

Question

http://localhost:8080/auth/login?lang=en我想用lang来标记languages.In认证的过程，这个参数丢失了。 我阅读了源代码。 LoginUrlAuthenticationEntryPoint.commence ```java public 无效开始（HttpServletRequest 请求，HttpServletResponse 响应， AuthenticationException authException) 抛出 IOException, ServletException {

    String redirectUrl = null;

    if (useForward) {

        if (forceHttps && "http".equals(request.getScheme())) {
            // First redirect the current request to HTTPS.
            // When that request is received, the forward to the login page will be
            // used.
            redirectUrl = buildHttpsRedirectUrlForRequest(request);
        }

        if (redirectUrl == null) {
            String loginForm = determineUrlToUseForThisRequest(request, response,
                    authException);

            if (logger.isDebugEnabled()) {
                logger.debug("Server side forward to: " + loginForm);
            }

            RequestDispatcher dispatcher = request.getRequestDispatcher(loginForm);

            dispatcher.forward(request, response);

            return;
        }
    }
    else {
        // redirect to login page. Use https if forceHttps true

        redirectUrl = buildRedirectUrlToLoginPage(request, response, authException);

    }

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

```

重写redirectUrl AbstractAuthenticationFilterConfigurer

java private void addAuthenticationEntryPoint(HttpSecurity http, OAuth2SsoProperties sso) throws Exception { ... exceptions.defaultAuthenticationEntryPointFor( new LoginUrlAuthenticationEntryPoint(sso.getLoginPath()), preferredMatcher); ... }

需要覆盖太多代码。 不知是不是我没有找到合适的现有配置来解决这个问题

Answer 1

已通过过滤器解决 在会话中保存消息