SpringCloud第二節內容精簡，單機Eureka的配置

主要講單機Eureka的配置

先搭建註冊中心

<?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>cloud2020</artifactId>
        <groupId>com.atguigu.springcloud</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>cloud-eureka-server7001</artifactId>

    <dependencies>
        <!--eureka-server-->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
        </dependency>
        <!-- 引入自己定義的api通用包，可以使用Payment支付Entity -->
        <dependency>
            <groupId>com.atguigu.springcloud</groupId>
            <artifactId>cloud-api-commons</artifactId>
            <version>${project.version}</version>
        </dependency>
        <!--boot web actuator-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <!--一般通用配置-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
        </dependency>
    </dependencies>

</project>

@SpringBootApplication
@EnableEurekaServer
public class EurekaMain7001
{
    public static void main(String[] args) {
        SpringApplication.run(EurekaMain7001.class, args);
    }
}

server:
  port: 7001


eureka:
  instance:
    hostname: localhost #eureka服務端的實例名稱
  client:
    register-with-eureka: false     #false表示不向註冊中心註冊自己。
    fetch-registry: false     #false表示自己端就是註冊中心，我的職責就是維護服務實例，並不需要去檢索服務
    service-url:
      #集羣指向其它eureka
      #defaultZone: http://eureka7002.com:7002/eureka/
      #單機就是7001自己
      defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/
    #server:
    #關閉自我保護機制，保證不可用服務被及時踢除
    #enable-self-preservation: false
    #eviction-interval-timer-in-ms: 2000

然後消費者和提供者都要配置

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

server:
  port: 80

spring:
  application:
    name: cloud-order-service

eureka:
  client:
    #表示是否將自己註冊進EurekaServer默認爲true。
    register-with-eureka: true
    #是否從EurekaServer抓取已有的註冊信息，默認爲true。單節點無所謂，集羣必須設置爲true才能配合ribbon使用負載均衡
    fetchRegistry: true
    service-url:
      #單機
      defaultZone: http://localhost:7001/eureka
      # 集羣
      #defaultZone: http://eureka7001.com:7001/eureka,http://eureka7002.com:7002/eureka  # 集羣版

@SpringBootApplication
@EnableEurekaClient
public class OrderMain80 {
    public static void main(String[] args) {
        SpringApplication.run(OrderMain80.class,args);
    }
}

要注意application.yml文件，前面要有層次，冒號後 要有空格