《从搭建微服务框架到深入理解Spring Cloud---(一) 服务注册与发现之Config篇》

搭建配置中心

导入依赖

<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">
 <parent>
 <artifactId>sakura</artifactId>
 <groupId>com.warm-sun</groupId>
 <version>1.0.0</version>
 </parent>
 <modelVersion>4.0.0</modelVersion>

 <artifactId>service-config</artifactId>
 <name>service-config</name>
 <packaging>jar</packaging>
 <description> 配置中心</description>
 <dependencies>
 <!--配置中心-->
 <dependency>
 <groupId>org.springframework.cloud</groupId>
 <artifactId>spring-cloud-config-server</artifactId>
 </dependency>
 <!--web 模块-->
 <dependency>
 <groupId>org.springframework.boot</groupId>
 <artifactId>spring-boot-starter-web</artifactId>
 <exclusions>
 <!--排除tomcat依赖-->
 <exclusion>
 <artifactId>spring-boot-starter-tomcat</artifactId>
 <groupId>org.springframework.boot</groupId>
 </exclusion>
 </exclusions>
 </dependency>
 <!--undertow容器-->
 <dependency>
 <groupId>org.springframework.boot</groupId>
 <artifactId>spring-boot-starter-undertow</artifactId>
 </dependency>
 </dependencies>


 <build>
 <plugins>
 <plugin>
 <groupId>org.springframework.boot</groupId>
 <artifactId>spring-boot-maven-plugin</artifactId>
 <configuration>
 <finalName>${project.name}</finalName>
 </configuration>
 </plugin>
 <plugin>
 <groupId>com.spotify</groupId>
 <artifactId>docker-maven-plugin</artifactId>
 <version>0.4.12</version>
 <configuration>
 <imageName>${registry.url}/${project.name}:0.0.1</imageName>
 <dockerHost>${docker.url}</dockerHost>
 <dockerDirectory>${project.basedir}</dockerDirectory>
 <resources>
 <resource>
 <targetPath>/</targetPath>
 <directory>${project.build.directory}</directory>
 <include>${project.build.finalName}.jar</include>
 </resource>
 </resources>
 <serverId>docker-hub</serverId>
 <registryUrl>https://index.docker.io/v1/</registryUrl>
 </configuration>
 </plugin>
 </plugins>
 </build>

</project>

编写启动类

package com.warmsun.config;

import org.springframework.boot.SpringApplication;
import org.springframework.cloud.client.SpringCloudApplication;
import org.springframework.cloud.config.server.EnableConfigServer;

/**
 * 配置中心
 */
@EnableConfigServer
@SpringCloudApplication
public class SakuraConfigApplication {
 public static void main(String[] args) {
 SpringApplication.run(SakuraConfigApplication.class,args);
 }
}

我们来对比之前的eureka搭建的主类，发现这里我们用的是@SpringCloudApplication注解，而eureka的主类上用的是@SpringBootApplication 注解，那我们来看一下SpringCloudApplication注解干了什么事情：

@Target({ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
@Documented
@Inherited
@SpringBootApplication
@EnableDiscoveryClient
@EnableCircuitBreaker
public @interface SpringCloudApplication {
}

导入了@SpringBootApplication注解，导入@EnableDiscoveryClient注解，改注解能导入config配置，不管你是Spring-cloud-config还是其他的例如：Apollo等，@EnableCircuitBreake 导入一个断路器实现。@EnableDiscoveryClient和@EnableCircuitBreake 我们可能还不是很了解，先不急，后面我们会一一解析

编写配置

server:
 port: 2001

spring:
 application:
 name: service-config
 #配置环境
 profiles: dev
 cloud:
 config:
 server:
 git:
 uri: https://github.com/JamariRay/athena-config.git
 #如过你的项目是私有，那么在下面配置你的git信息，如果是公开的，删除下面的2配置
 username: ××××
 password: ××××××

eureka:
 instance:
 prefer-ip-address: true
 client:
 service-url:
 defaultZone: http://sakura:Sakura*&^999@${eureka.instance.hostname}:${server.port}/eureka/

编写其他的微服务配置

在github上创建一个athena-config项目，然后克隆到本地，编写好后，push到github，这样我们的config项目就能读取到相应微服务的信息了。

application-dev:

# redis 相关
spring:
 redis:
 password:
 host: localhost
# 暴露监控端点
management:
 endpoints:
 web:
 exposure:
 include: '*'

# feign 配置
feign:
 hystrix:
 enabled: true
 okhttp:
 enabled: true
 httpclient:
 enabled: false
 client:
 config:
 feignName:
 connectTimeout: 10000
 readTimeout: 10000
 compression:
 request:
 enabled: true
 response:
 enabled: true
# hystrix If you need to use ThreadLocal bound variables in your RequestInterceptor`s
# you will need to either set the thread isolation strategy for Hystrix to `SEMAPHORE or disable Hystrix in Feign.
hystrix:
 command:
 default:
 execution:
 isolation:
 strategy: SEMAPHORE
 thread:
 timeoutInMilliseconds: 60000
 shareSecurityContext: true

#请求处理的超时时间
ribbon:
 ReadTimeout: 10000
 ConnectTimeout: 10000

加-dev是因为当前坏境为开发环境，在service-config项目下已经配置了profiles:dev所以这里也要对应，其他的微服务配置

# 数据源
spring:
 datasource:
 type: com.zaxxer.hikari.HikariDataSource
 driver-class-name: com.mysql.jdbc.Driver
 username: root
 password: 123456
 url: jdbc:mysql://localhost:3306/sakura?characterEncoding=utf8&zeroDateTimeBehavior=convertToNull&useSSL=false

好了微服务注册中心就搭好了，更多搭建信息参见spring的官方文档.

好了搭建微服务配置中心就到这里了，源码解析我会在后面分享！

《从搭建微服务框架到深入理解Spring Cloud---(一) 服务注册与发现之Config篇》

搭建配置中心

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