Detailed process of springboot integrating gateway

1. Add dependencies

First, in yourAdd Spring Cloud Gateway dependencies to the file:

<dependency>
    <groupId></groupId>
    <artifactId>spring-cloud-starter-gateway</artifactId>
</dependency>

If you also need to use Eureka for service discovery, you can add dependencies for Eureka client:

<dependency>
    <groupId></groupId>
    <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
</dependency>

2. Configure gateway routing

existorConfigure the routing rules for the gateway in the file. Here is a simple configuration example:


spring:
  cloud:
    gateway:
      routes:
        - id: service1_route
          uri: http://localhost:8081
          predicates:
            - Path=/service1/**
        - id: service2_route
          uri: http://localhost:8082
          predicates:
            - Path=/service2/**

3. Enable Eureka client (optional)

If you use Eureka for service discovery, you canorConfigure the Eureka client in the file


eureka:
  client:
    service-url:
      defaultZone: http://localhost:8761/eureka/

4. Create the main application class

Create a Spring Boot main application class and enable the Eureka client (if needed):

import ;
import ;
import ;
@SpringBootApplication
@EnableDiscoveryClient // If you need to use Eureka, enable this annotationpublic class GatewayApplication {
    public static void main(String[] args) {
        (, args);
    }
}

5. Custom filter (optional)

You can achieveGatewayFilterInterface to create custom filters. Here is a simple filter example:

import ;
import ;
import ;
import ;
@Component
public class CustomFilter extends AbstractGatewayFilterFactory&lt;&gt; {
    public CustomFilter() {
        super();
    }
    @Override
    public GatewayFilter apply(Config config) {
        return (exchange, chain) -&gt; {
            // Action performed before request            ("Pre-filter logic");
            return (exchange).then((() -&gt; {
                // Action performed after request                ("Post-filter logic");
            }));
        };
    }
    public static class Config {
        //Configuration parameters    }
}

6. Launch the application

After starting the Spring Boot application, the gateway will forward the request to the corresponding service according to the configured routing rules.

7. Access the gateway

You can access the backend service through the gateway's address. For example, if the gateway is runninglocalhost:8080You can access it through the following URLservice1：

http://localhost:8080/service1/your-endpoint

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