spring cloud gateway 自定义全局过滤器

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spring cloud gateway 自定义全局过滤器

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相关接口

GlobalFilter：全局过滤接口

public interface GlobalFilter {
    Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain);
}

Ordered：过滤接口调用顺序，数值小的在前面调用

public interface Ordered {
    int HIGHEST_PRECEDENCE = -2147483648;
    int LOWEST_PRECEDENCE = 2147483647;

    int getOrder();
}

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示例

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配置文件

application.yml

spring:
  cloud:
    gateway:
      routes:
        - id: myRoute
          uri: http://www.baidu.com
          predicates:
            - Path=/hello
          filters:
            - StripPrefix=1

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过滤器

过滤器1

@Component
public class CustomFilter implements GlobalFilter, Ordered {

    @Override
    public int getOrder() {
        return 0;
    }

    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
        System.out.println("hello world");
        return chain.filter(exchange);
    }
}

过滤器2

@Component
public class CustomFilter2 implements GlobalFilter, Ordered {

    @Override
    public int getOrder() {
        return 1;
    }

    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
        System.out.println("hello world2");
        return chain.filter(exchange);
    }
}

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测试输出

http//localhost:8080/hello

hello world
hello world2