微服務學習筆記二：Eureka服務註冊發現

時間 2019-11-19

標籤微服學習筆記 eureka 服務註冊發現简体版

原文原文鏈接

Eureka服務註冊發現

服務發現：雲端負載均衡，一個基於 REST 的服務，用於定位服務，以實現雲端的負載均衡和中間層服務器的故障轉移。java

1. Service Discovery: Eureka Server

Spring Cloud Netflix - Service Discovery: Eureka Serverspring

Eureka服務端，實現服務註冊中心。瀏覽器

1.1 Eureka 註冊中心（註冊表）實現

1. 添加依賴服務器

<!-- 註冊中心 -->
<dependency>
	<groupId>org.springframework.cloud</groupId>
	<artifactId>spring-cloud-starter-eureka-server</artifactId>
</dependency>
		
<!-- 用於註冊中心訪問帳號認證 -->
<dependency>
	<groupId>org.springframework.boot</groupId>
	<artifactId>spring-boot-starter-security</artifactId>
</dependency>

2.application.yml配置app

server:
  port: 8761
security:
  basic:
    enabled: true #開啓認證
  user:
    name: user
    password: 123456
eureka:
  client:
    register-with-eureka: false
    fetch-registry: false
    service-url:
      defaultZone: http://user:password@localhost:8761/eureka

3.主程序入口負載均衡

@SpringBootApplication
@EnableEurekaServer//開啓Eureka Server 
public class MicroserviceDiscoveryEurekaApplication {

	public static void main(String[] args) {
		SpringApplication.run(MicroserviceDiscoveryEurekaApplication.class, args);
	}
}

4.測試，瀏覽器訪問：http://localhost:8761/ide

2. Service Discovery: Eureka Clients　　

Spring Cloud Netflix - Service Discovery: Eureka Clientsspring-boot

Eureka客戶端，提供服務，進行服務註冊。測試

1.引入依賴　　fetch

<dependency>
	<groupId>org.springframework.cloud</groupId>
	<artifactId>spring-cloud-starter-eureka</artifactId>
</dependency>
<!-- 用於註冊中心訪問帳號認證 -->
<dependency>
	<groupId>org.springframework.boot</groupId>
	<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>

2.application.yml配置

server:
  port: 8081 #8181
spring:
  application:
    name: microservice-provider-user
eureka:
  client:
    serviceUrl:
      defaultZone: http://user:123456@localhost:8761/eureka  #註冊 中心已經開啓認證
  instance:
    prefer-ip-address: true
    instanceId: ${spring.application.name}:${spring.application.instance_id:${server.port}}

3.主程序入口

@SpringBootApplication
@EnableEurekaClient //啓動EnableEureka客戶端
@RestController
public class MicroserviceProviderUserApplication {

	@GetMapping("/hello/{name}")
	public String hello(@PathVariable String name){
		System.out.println(name+" welcome . My is microservice provider user");
		return name+" welcome . My is microservice provider user";
	}
	public static void main(String[] args) {
		SpringApplication.run(MicroserviceProviderUserApplication.class, args);
	}
}

spring.cloud-Eureka服務註冊發現.zip