@Override  public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)      throws Exception {    //String origin = (String) request.getRemoteHost()+":"+request.getRemotePort();    response.addHeader("Access-Control-Allow-Origin", "*");    //System.out.println("Access-Control-Allow-Origin");    response.addHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE");    //System.out.println("Access-Control-Allow-Methods");    response.addHeader("Access-Control-Max-Age", "3600");    //System.out.println("Access-Control-Max-Age");    response.addHeader("Access-Control-Allow-Headers", "x-requested-with,Authorization");    //System.out.println("Access-Control-Allow-Headers");    response.addHeader("Access-Control-Allow-Credentials","true");    //System.out.println("Access-Control-Allow-Credentials");    String api_key = request.getParameter("api_key");    String api_secret = request.getParameter("api_secret");;      if (check(api_key,api_secret)){        return true;      }      response.sendError(400,"api_key or api_secret are error");      return false;  }@Configurationpublic class MyWebMvcConfigurer implements WebMvcConfigurer {  @Bean  APIIntercepter apiIntercepter() {    return new APIIntercepter();  }  @Override  public void addInterceptors(InterceptorRegistry registry) {    // 添加一個攔截器，連接以/v1為前綴的 url路徑    registry.addInterceptor(loginIntercepter()).addPathPatterns("/admin/**");    registry.addInterceptor(apiIntercepter()).addPathPatterns("/v1/**");  }}