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Modify HttpServletResponse #spring-web-mvc #springframework
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| public static class LoginResponseFilter extends OncePerRequestFilter { | |
| @Override | |
| protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, | |
| FilterChain filterChain) throws ServletException, IOException { | |
| if (request.getRequestURI().equals("/login") && request.getMethod().equals(HttpMethod.GET.name())) { | |
| ContentCachingResponseWrapper contentCachingResponseWrapper = new ContentCachingResponseWrapper(response); | |
| filterChain.doFilter(request, contentCachingResponseWrapper); | |
| byte[] content = contentCachingResponseWrapper.getContentAsByteArray(); | |
| String html = new String(content, StandardCharsets.UTF_8); | |
| // Fix favicon.ico | |
| html = html.replaceFirst("<head>", | |
| "<head>\n <link rel=\"shortcut icon\" href=\"data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" type=\"image/x-icon\">"); | |
| // Hack title | |
| html = html.replaceFirst("<title>.*</title>", "<title>Got you!</title>"); | |
| response.getWriter().write(html); | |
| return; | |
| } | |
| filterChain.doFilter(request, response); | |
| } | |
| } | |
| @Bean | |
| FilterRegistrationBean<LoginResponseFilter> loginResponseFilter() { | |
| FilterRegistrationBean<LoginResponseFilter> registrationBean = new FilterRegistrationBean<>(); | |
| registrationBean.setFilter(new LoginResponseFilter()); | |
| registrationBean.setOrder(Ordered.HIGHEST_PRECEDENCE); | |
| return registrationBean; | |
| } |
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