Spring Cloud Gateway路由断言实战——Header路由断言工厂

Bertha 。 2021-07-24 11:35 465阅读 0赞

**一 源码位置**

[https://github.com/cakin24/spring-cloud-code/tree/master/ch17-2/ch17-2-5-gateway][https_github.com_cakin24_spring-cloud-code_tree_master_ch17-2_ch17-2-5-gateway]

[https://github.com/cakin24/spring-cloud-code/tree/master/ch17-2/ch17-2-service][https_github.com_cakin24_spring-cloud-code_tree_master_ch17-2_ch17-2-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 SpringCloudGatewayApplication {
    
    
       @Bean
       public RouteLocator customRouteLocator(RouteLocatorBuilder builder) {
          // 关键是下面几行代码
          return builder.routes()
                .route("header_route", r -> r.header("X-Request-Id", "xujin")
                      .uri("http://localhost:8071/test/head"))
                .build();
       }
       public static void main(String[] args) {
          SpringApplication.run(SpringCloudGatewayApplication.class, args);
       }
    }

**三 测试**

1 启动ch17-2-5-gateway

2 启动ch17-2-service

3 Postman进行测试，界面如下

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70][]

[https_github.com_cakin24_spring-cloud-code_tree_master_ch17-2_ch17-2-5-gateway]: https://github.com/cakin24/spring-cloud-code/tree/master/ch17-2/ch17-2-1-gateway
[https_github.com_cakin24_spring-cloud-code_tree_master_ch17-2_ch17-2-service]: https://github.com/cakin24/spring-cloud-code/tree/master/ch17-2/ch17-2-service
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70]: /images/20210724/786c0863016a4feb8d9048e5bd8ba855.png