Basic use Zuul Gateway

Create a moudle

The first step in the introduction of dependence:

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <parent>
        <artifactId>cloud-demo</artifactId>
        <groupId>com.company</groupId>
        <version>1.0.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>zuul-gateway</artifactId>
    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-zuul</artifactId>
        </dependency>
    </dependencies>


</project>

Step Two: Start writing class, add annotations to enable the @EnableZuulProxy Zuul

package com.company;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.zuul.EnableZuulProxy;

@SpringBootApplication
@EnableZuulProxy
public class ZuulGatewayApplication {
    public static void main(String[] args) {
        SpringApplication.run(ZuulGatewayApplication.class);
    }
}

Step Three: Configure application.yml

# Connection eureka registry 
eureka: 
  Client: 
    Service - url: 
      defaultzone: HTTP: // 127.0.0.1:8888/eureka 
# specified port 
Server: 
  Port: 8989 
# Specify the service name 
the Spring: 
  the Application: 
    name: Zuul - Gateway 
# Configure gateway

zuul Gateway has a default configuration, it is to match the service id, then forwards, and to achieve load balancing

Originally access address: HTTP: // localhost: 8080 / consumer3 / 1

Access address after the addition of Zuul: HTTP: // localhost: 8989 / Consumer-Service / consumer3 / 1

　　　　　　　　　　　　http: // localhost: 8989 / service the above mentioned id / consumer3 / 1

The default will take the list of services from eureka Latin America, and generates a default route mapping.

# Configure Gateway 
zuul: 
  routes: 
    Consumer-Service: / Consumer-Service / ** # equivalent to the default configuration, this time eureka other services also like matching rules 
  ignored-services: # service configuration set to be ignored, so it zuul the service does not generate default mapping, it will not be exposed outside of the service 
    - user-service # service id

If you do not want to expose some services in zuul, you can add the above configuration