spring cloud gateway 自定义全局过滤器

野性酷女 2023-07-02 03:30 146阅读 0赞

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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