自定义过滤器实现token非空校验

/**

• token校验全局过滤器
  */
  @Component
  public class AuthGatewayFilter implements GlobalFilter, Ordered{

  private static final String AUTHORIZE_TOKEN = “token”;

  @Override
  public Mono filter(ServerWebExchange exchange, GatewayFilterChain chain) {

   ServerHttpRequest requestNew = exchange.getRequest();
   HttpHeaders headers = requestNew.getHeaders();
   String token = headers.getFirst(AUTHORIZE_TOKEN);
   if (token == null) {
       ServerHttpResponse response = exchange.getResponse();
       JSONObject message = new JSONObject();
       //提示信息
       message.put("status", -1);
       message.put("data", "token为空");
       byte[] bits = message.toJSONString().getBytes(StandardCharsets.UTF_8);
       DataBuffer buffer = response.bufferFactory().wrap(bits);
       //返回401状态码
       response.setStatusCode(HttpStatus.UNAUTHORIZED);
       //指定编码，否则在浏览器中会中文乱码
       response.getHeaders().add("Content-Type", "text/plain;charset=UTF-8");
       return response.writeWith(Mono.just(buffer));
   }
   return chain.filter(exchange);
  

  }

  //Ordered接口用来指定执行拦截器顺序（数字越小执行优先级越高）
  @Override
  public int getOrder() {
  return -1000;
  }
  }