Spring Cloud学习之使用构建高可用Config Server

说明：

springboot 版本：1.5.12.Release

springcloud 版本：Dalston SR5

开发工具：eclipse-2018.12

1、新建maven父工程（要选择pom类型的打包方式），引入基础依赖，并对依赖版本进行管理

   <modules>
       <module>spring-cloud-eureka-server</module>
       <module>spring-cloud-eureka-provider-8086</module>
       <module>spring-cloud-config-server</module>
   </modules>

   <parent>
       <groupId>org.springframework.boot</groupId>
       <artifactId>spring-boot-starter-parent</artifactId>
       <version>1.5.12.RELEASE</version>
       <relativePath />
   </parent>

<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
       <java.version>1.8</java.version>
       <spring-cloud.version>Dalston.SR5</spring-cloud.version>
       <lombok.version>1.18.6</lombok.version>
   </properties>

<dependency>
           <groupId>org.springframework.boot</groupId>
           <artifactId>spring-boot-starter-actuator</artifactId>
       </dependency>

<dependency>
           <groupId>org.springframework.boot</groupId>
           <artifactId>spring-boot-devtools</artifactId>
           <scope>runtime</scope>
       </dependency>

<dependency>
           <groupId>org.springframework.boot</groupId>
           <artifactId>spring-boot-starter-test</artifactId>
           <scope>test</scope>
       </dependency>
   </dependencies>

<dependencyManagement>
       <dependencies>
           <dependency>
               <groupId>org.springframework.cloud</groupId>
               <artifactId>spring-cloud-dependencies</artifactId>
               <version>${spring-cloud.version}</version>
               <type>pom</type>
               <scope>import</scope>
           </dependency>
           <dependency>
               <groupId>org.projectlombok</groupId>
               <artifactId>lombok</artifactId>
               <version>${lombok.version}</version>
               <scope>provided</scope>
           </dependency>
       </dependencies>
   </dependencyManagement>

<build>
       <plugins>
           <plugin>
               <groupId>org.springframework.boot</groupId>
               <artifactId>spring-boot-maven-plugin</artifactId>
               <configuration>
                   <classifier>exec</classifier>
               </configuration>
           </plugin>
       </plugins>
   </build>
</project>

2、在父工程下新建一个maven module，导入eureka-server相关依赖，作为服务注册中心

(1)修改pom.xml:

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

（2）在application.yml中配置Eureka Server

spring:
profiles:
active: dev

---
spring:
profiles: dev
application:
name: eureka-server

server:
port: 8761

#配置eureka服务注册中心
eureka:
client:
service-url:
defaultZone: http://localhost:${server.port}/eureka

#不从eureka server上获取服务
fetch-registry: false

#不把本身注册到eureka server上
register-with-eureka: false
#开启端点监控
management:
security:
enabled: false

（3）在主启动类使用@EnableEurekaServer
@EnableEurekaServer
@SpringBootApplication
public class EurekaServerApplication {
   public static void main(String[] args) {
       SpringApplication.run(EurekaServerApplication.class, args);
   }

}

3、创建一个新的maven module，作为config server

(1)修改pom.xml,引入相关依赖

<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>com.scau</groupId>
<artifactId>spring-cloud-demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<artifactId>spring-cloud-config-server</artifactId>

<dependencies>

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

（2）在resource下新建configs文件夹，来存放其他模块的配置文件（eg:eureka-provider-8086.yml）

（3）在application.yml中配置config server相关内容与服务注册url，将这个服务注册到eureka server中

server:
port: 8769

#配置从类路径下的config文件夹下读取配置文件
spring:
application:
name: config-server
cloud:
config:
server:
native:
search-locations: classpath:configs
profiles:
active:
- native
#配置eureka服务注册中心
eureka:
client:
service-url:
defaultZone: http://localhost:8761/eureka
instance:
instance-id: config-server.com
prefer-ip-address: true
#开启端点监控
management:
security:
enabled: false

(4)在主启动类上使用@EnableConfigServer与@EnableEurekaClient
@EnableEurekaClient
@EnableConfigServer
@SpringBootApplication
public class ConfigServerApplication {
   public static void main(String[] args) {
       SpringApplication.run(ConfigServerApplication.class, args);
   }

}
4、再新建一个maven module，作为Eureka client(eg:这里命名为eureka-provider-8086)

(1)修改pom.xml

<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>com.scau</groupId>
<artifactId>spring-cloud-demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<artifactId>spring-cloud-eureka-provider-8086</artifactId>

<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
   <groupId>org.springframework.cloud</groupId>
   <artifactId>spring-cloud-starter-eureka</artifactId>
   </dependency>
   <dependency>
   <groupId>org.springframework.cloud</groupId>
   <artifactId>spring-cloud-starter-config</artifactId>
   </dependency>
</dependencies>
</project>

(2)在bootstrap.yml（比application.yml拥有更高优先级）中配置从config server这个服务获取配置文件内容

spring:
application:
name: eureka-provider-8086
config-name: config-server
#配置从服务名为config-server中获取配置，并且如果连接不上就快速失败
cloud:
config:
discovery:
enabled: true
service-id: ${spring.application.config-name}
fail-fast: true
label: master
profiles:
active:
- dev
#配置eureka服务注册中心（PS：这里的服务注册中心要与config server的服务注册中心相同）
eureka:
client:
service-url:
defaultZone: http://localhost:8761/eureka
instance:
prefer-ip-address: true
instance-id: eureka-provider-8086.com

(3)在主启动类上使用@EnableEurekaClient

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

5、测试是否成功

（1）启动eureka server

（2）启动config server

（3）启动eureka-provider-8086

访问localhost:8761/eureka(即服务注册中心），如下

Spring Cloud学习之使用构建高可用Config Server

访问localhost:8086/info(刚才在eureka-provider-8086.yml中配置的端点信息)，如下

Spring Cloud学习之使用构建高可用Config Server

到此：构建config server并作其作为服务注册到eureka server就完成了，不同版本的cloud可能配置有些不同；

发现有什么错误的话，请指出

Spring Cloud学习之使用构建高可用Config Server

相关推荐