spring cloud 笔记

版本号

• java 1.8
• spring-boot 2.7.18
• spring-cloud 2021.0.9

    <properties>
        <spring-boot.version>2.7.18</spring-boot.version>
        <spring-cloud.version>2021.0.9</spring-cloud.version>
        <maven-plugins.version>3.6.1</maven-plugins.version>
        <java.version>1.8</java.version>
    </properties>

    <dependencyManagement>
        <dependencies>
            <!-- SpringBoot的依赖配置-->
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-dependencies</artifactId>
                <version>${spring-boot.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <!-- SpringCloud 依赖 -->
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>${spring-cloud.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

eureka 服务注册中心

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

aplication.yml

server:
  port: 8080

eureka:
  instance:
    hostname: localhost
    prefer-ip-address: true
  client:
    # 表示不向注册中心注册自己
    register-with-eureka: false
    # 注册中心的职责是维护实例，不需要去检索服务
    fetch-registry: false
    service-url:
      defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/
    server:
      # 是否要打开自我保护机制
      enable-self-preservation: true

starter

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

服务注册

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <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-openfeign</artifactId>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>
    </dependencies>

server:
  port: 8090

spring:
  application:
    name: client-A

eureka:
  # 服务注册相关的配置信息
  client:
    service-url:
      defaultZone: http://localhost:8080/eureka/
  instance:
    # 是否优先使用IP地址作为主机名的标识
    prefer-ip-address: true

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

}