spring cloud gateway 自定义GatewayFilterFactory

官网地址：https://docs.spring.io/spring-cloud-gateway/docs/2.2.9.RELEASE/reference/html/#writing-custom-route-predicate-factories

参考地址：https://blog.csdn.net/myli92/article/details/127328893

import com.ruoyi.common.core.utils.StringUtils;
import org.springframework.cloud.gateway.filter.GatewayFilter;
import org.springframework.cloud.gateway.filter.factory.AbstractGatewayFilterFactory;
import org.springframework.http.server.reactive.ServerHttpRequest;
import org.springframework.stereotype.Component;

/**
 * 验证码过滤器
 *
 * @author ruoyi
 */
@Component
public class ValidateCodeFilter extends AbstractGatewayFilterFactory<ValidateCodeFilter.Config> {


    public ValidateCodeFilter()
    {
        super(Config.class);
    }

    @Override
    public GatewayFilter apply(Config config) {
        return (exchange, chain) -> {
            ServerHttpRequest request = exchange.getRequest();

            // 非登录/注册请求或验证码关闭，不处理
            if (!StringUtils.containsAnyIgnoreCase(request.getURI().getPath(), config.getValidateUrls()) ) {
                return chain.filter(exchange);
            }
            // TODO 做验证处理逻辑

            return chain.filter(exchange);
        };
    }

    static class Config {
        private String[] validateUrls ;

        public String[] getValidateUrls() {
            return validateUrls;
        }
        public void setValidateUrls(String[] validateUrls) {
            this.validateUrls = validateUrls;
        }
    }
}

配置：

spring:
  cloud:
    gateway:
      discovery:
        locator:
          lowerCaseServiceId: true
          enabled: true
      routes:
        # 认证中心
        - id: ruoyi-auth
          uri: lb://ruoyi-auth
          predicates:
            - Path=/auth/**
          filters:
            # 验证码处理
            - name: ValidateCodeFilter
              args:
                validateUrls: 
                  - /auth/login
                  - /auth/register       
            - StripPrefix=1