Spring Cloud Gateway内置过滤器实战——AddResponseHeader过滤器工厂

╰半橙微兮° 2021-07-24 14:13 588阅读 0赞

**一 代码位置**

[https://github.com/cakin24/spring-cloud-code/tree/master/ch17-3/ch17-3-4-gateway][https_github.com_cakin24_spring-cloud-code_tree_master_ch17-3_ch17-3-4-gateway]

[https://github.com/cakin24/spring-cloud-code/tree/master/ch17-3/ch17-3-service][https_github.com_cakin24_spring-cloud-code_tree_master_ch17-3_ch17-3-service]

**二 关键代码**

package cn.springcloud.book.gateway;
    
    
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.cloud.gateway.route.RouteLocator;
    import org.springframework.cloud.gateway.route.builder.RouteLocatorBuilder;
    import org.springframework.context.annotation.Bean;
    
    
    @SpringBootApplication
    public class SCGatewayApplication {
    
       @Bean
       public RouteLocator testRouteLocator(RouteLocatorBuilder builder) {
          // 下面几行是关键代码
          return builder.routes()
                .route("add_request_header_route", r ->
                      r.path("/test").filters(f -> f.addResponseHeader("X-Response-Foo", "Bar"))
                            .uri("http://www.baidu.com"))
                .build();
       }
    
    
       public static void main(String[] args) {
          SpringApplication.run(SCGatewayApplication.class, args);
       }
    }

**三 测试**

1 启动ch17-3-4-gateway

2 启动ch17-3-service

3 浏览器输入： [http://localhost:8080/test][http_localhost_8080_test]

4 调试窗口输出如下：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70][]

[https_github.com_cakin24_spring-cloud-code_tree_master_ch17-3_ch17-3-4-gateway]: https://github.com/cakin24/spring-cloud-code/tree/master/ch17-3/ch17-3-1-gateway
[https_github.com_cakin24_spring-cloud-code_tree_master_ch17-3_ch17-3-service]: https://github.com/cakin24/spring-cloud-code/tree/master/ch17-3/ch17-3-service
[http_localhost_8080_test]: http://localhost:8080/test
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70]: /images/20210724/bf56bd5d5d1047199a85be6f3c1cefd7.png