2019-06-12 eureka client 端以及 con

1/pom 文件

<?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">

    <modelVersion>4.0.0</modelVersion>

    <parent>

        <groupId>org.springframework.boot</groupId>

        <artifactId>spring-boot-starter-parent</artifactId>

        <version>2.1.5.RELEASE</version>

        <relativePath/> <!-- lookup parent from repository -->

    </parent>

    <groupId>com.zbiti.zz</groupId>

    <artifactId>member</artifactId>

    <version>0.0.1-SNAPSHOT</version>

    <name>member</name>

    <description>Demo project for Spring Boot</description>

    <properties>

        <java.version>1.8</java.version>

        <spring-cloud.version>Greenwich.SR1</spring-cloud.version>

    </properties>

    <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.boot</groupId>

            <artifactId>spring-boot-starter-test</artifactId>

            <scope>test</scope>

        </dependency>

        <dependency>

            <groupId>org.springframework.cloud</groupId>

            <artifactId>spring-cloud-starter-config</artifactId>

        </dependency>

<!------actuator用于动态刷新配置文件的--->

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-starter-actuator</artifactId>

            <version>2.1.1.RELEASE</version>

        </dependency>

    </dependencies>

    <dependencyManagement>

        <dependencies>

            <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>

    <build>

        <plugins>

            <plugin>

                <groupId>org.springframework.boot</groupId>

                <artifactId>spring-boot-maven-plugin</artifactId>

            </plugin>

        </plugins>

    </build>

    <repositories>

        <repository>

            <id>spring-milestones</id>

            <name>Spring Milestones</name>

            <url>https://repo.spring.io/libs-milestone</url>

            <snapshots>

                <enabled>false</enabled>

            </snapshots>

        </repository>

    </repositories>

</project>

2、从git 配置中心获取配置内容，必须将config client 端的配置文件命名为 bootstrap.yml

server:

  port: 1006

eureka:

  client:

    service-url:

    #eureka 客户端配置

      defaultZone: http://localhost:1005/eureka/

    register-with-eureka: true

    fetch-registry: true

spring:

  application:

    #应用名称，需要和git 上存的配置文件前缀一致

    name: member

  cloud:

    #配置中心客户端配置

    config:

    #环境名称，需要和git上存的配置文件命名中的环境一致 eg:member-dev.yml

      profile: dev

      discovery:

        #配置中心server 在eureka注册 的服务名称

        service-id: config-server

        enabled: true

#开启所有端点手动根据配置中心配置 刷新

management:         

  endpoints:       

    web:           

      exposure:     

        #include: "*"
        include: /refresh #这是配置刷新路径

3、系统主类，开启eureka客户端

@SpringBootApplication

@EnableEurekaClient

public class MemberApplication {

    public static void main(String[] args) {

    SpringApplication.run(MemberApplication.class, args);

    }

}

4、需要使用配置中心的文件地方，开启@Configuration(有人说不用这个注解），开启手动刷新注解 @RefreshScope,  当git 中配置文件内容变更，只需要 post 方式 访问当前这个节点 eg: http://127.0.0.1:1006/actuator/refresh  刷新即可

@RestController

@Configuration

@RefreshScope //开启手动刷新配置文件的注解

public class IndexController {

#git配置文件中一个属性的读取

@Value("${userAge}")

private StringuserAge;

@RequestMapping("/get_user_age")

public String getUserAge(){

return userAge;

}

}