微服务SpringCloud之Spring Cloud Config配置中心服务化

在前面两篇Spring Cloud Config配置中心的博客中都是需要指定配置服务的地址url：spring.cloud.config.uri，客户端都是直接调用配置中心的server端来获取配置文件信息。如果server端要做集群，客户端只能通过原始的方式来路由，server端改变IP地址的时候，客户端也需要修改配置，不符合springcloud服务治理的理念。springcloud提供了这样的解决方案，我们只需要将server端当做一个服务注册到eureka中，client端去eureka中去获取配置中心server端的服务既可。

一、Server端改造

1.添加依赖

在SpringCloudConfigServer项目中，添加spring-cloud-starter-netflix-eureka-client引用。

<dependency>
    <groupId>org.springframework.cloudgroupId>
    <artifactId>spring-cloud-starter-netflix-eureka-clientartifactId>
dependency>

View Code

<?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>4.0.0modelVersion>
    <parent>
        <groupId>org.springframework.bootgroupId>
        <artifactId>spring-boot-starter-parentartifactId>
        <version>2.1.6.RELEASEversion>
        <relativePath/>
    parent>
    <groupId>com.examplegroupId>
    <artifactId>SpringCloudConfigServerartifactId>
    <version>0.0.1-SNAPSHOTversion>
    <packaging>warpackaging>
    <name>SpringCloudConfigServername>
    <description>Demo project for Spring Bootdescription>
<span>&lt;</span><span>properties</span><span>&gt;</span>
    <span>&lt;</span><span>java.version</span><span>&gt;</span>1.8<span><span>java.version</span><span>&gt;</span>
    <span>&lt;</span><span>spring-cloud.version</span><span>&gt;</span>Greenwich.SR2<span><span>spring-cloud.version</span><span>&gt;</span>
<span><span>properties</span><span>&gt;</span>

<span>&lt;</span><span>dependencies</span><span>&gt;</span>
    <span>&lt;</span><span>dependency</span><span>&gt;</span>
        <span>&lt;</span><span>groupId</span><span>&gt;</span>org.springframework.boot<span><span>groupId</span><span>&gt;</span>
        <span>&lt;</span><span>artifactId</span><span>&gt;</span>spring-boot-starter-web<span><span>artifactId</span><span>&gt;</span>
    <span><span>dependency</span><span>&gt;</span>
    <span>&lt;</span><span>dependency</span><span>&gt;</span>
        <span>&lt;</span><span>groupId</span><span>&gt;</span>org.springframework.cloud<span><span>groupId</span><span>&gt;</span>
        <span>&lt;</span><span>artifactId</span><span>&gt;</span>spring-cloud-config-server<span><span>artifactId</span><span>&gt;</span>
    <span><span>dependency</span><span>&gt;</span>

<dependency>
    <groupId>org.springframework.cloudgroupId>
    <artifactId>spring-cloud-starter-netflix-eureka-clientartifactId>
dependency>
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-tomcatartifactId>
            <scope>providedscope>
        dependency>
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-testartifactId>
            <scope>testscope>
        dependency>
    dependencies>
<span>&lt;</span><span>dependencyManagement</span><span>&gt;</span>
    <span>&lt;</span><span>dependencies</span><span>&gt;</span>
        <span>&lt;</span><span>dependency</span><span>&gt;</span>
            <span>&lt;</span><span>groupId</span><span>&gt;</span>org.springframework.cloud<span><span>groupId</span><span>&gt;</span>
            <span>&lt;</span><span>artifactId</span><span>&gt;</span>spring-cloud-dependencies<span><span>artifactId</span><span>&gt;</span>
            <span>&lt;</span><span>version</span><span>&gt;</span>${spring-cloud.version}<span><span>version</span><span>&gt;</span>
            <span>&lt;</span><span>type</span><span>&gt;</span>pom<span><span>type</span><span>&gt;</span>
            <span>&lt;</span><span>scope</span><span>&gt;</span>import<span><span>scope</span><span>&gt;</span>
        <span><span>dependency</span><span>&gt;</span>
    <span><span>dependencies</span><span>&gt;</span>
<span><span>dependencyManagement</span><span>&gt;</span>

<span>&lt;</span><span>build</span><span>&gt;</span>
    <span>&lt;</span><span>plugins</span><span>&gt;</span>
        <span>&lt;</span><span>plugin</span><span>&gt;</span>
            <span>&lt;</span><span>groupId</span><span>&gt;</span>org.springframework.boot<span><span>groupId</span><span>&gt;</span>
            <span>&lt;</span><span>artifactId</span><span>&gt;</span>spring-boot-maven-plugin<span><span>artifactId</span><span>&gt;</span>
        <span><span>plugin</span><span>&gt;</span>
    <span><span>plugins</span><span>&gt;</span>
<span><span>build</span><span>&gt;</span>

project>View Code
2.增加了eureka注册中心的配置
在application.properties中增加eureka注册中心的配置，http://localhost:8088是后面启动的eureka server的地址
eureka.client.serviceUrl.defaultZone=http://localhost:8088/eureka/

3.增加注解
在main方法中增加@EnableDiscoveryClient注解
二、客户端改造
1、添加依赖
也是引入spring-cloud-starter-netflix-eureka-client。
<dependency>
    <groupId>org.springframework.cloudgroupId>
    <artifactId>spring-cloud-starter-netflix-eureka-clientartifactId>
dependency>

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参考：http://www.ityouknow.com/springcloud/2017/05/25/springcloud-config-eureka.html

>?>cs.com/articles/20230526/733213-20190825210552981-384559247.png)

参考：http://www.ityouknow.com/springcloud/2017/05/25/springcloud-config-eureka.html

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参考：http://www.ityouknow.com/springcloud/2017/05/25/springcloud-config-eureka.html

>project lo](http://localhost:8002/hello)，可以读取到配置文件的属性信息

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参考：http://www.ityouknow.com/springcloud/2017/05/25/springcloud-config-eureka.html

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参考：http://www.ityouknow.com/springcloud/2017/05/25/springcloud-config-eureka.html

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参考：http://www.ityouknow.com/springcloud/2017/05/25/springcloud-config-eureka.html

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参考：http://www.ityouknow.com/springcloud/2017/05/25/springcloud-config-eureka.html

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    xsi:schemaLocation8002/hello](http://localhost:8002/hello)，可以读取到配置文件的属性信息

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参考：http://www.ityouknow.com/springcloud/2017/05/25/springcloud-config-eureka.html

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参考：http://www.ityouknow.com/springcloud/2017/05/25/springcloud-config-eureka.html

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参考：http://www.ityouknow.com/springcloud/2017/05/25/springcloud-config-eureka.html

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    <groupId>com.examplegroupId>
    <artifactId>SpringCloudConfigClientartifactId>
    <version>0.0.1-SNAPSHOTversion>
    <packaging>warpackaging>
    <name>SpringCloudConfigClientname>
    <description>Demo project for Spring Bootdescription>

    <properties>
        <java.version>1.8java.version>
        <spring-cloud.version>Greenwich.SR2spring-cloud.version>
    properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-webartifactId>
        dependency>
        <dependency>
            <groupId>org.springframework.cloudgroupId>
            <artifactId>spring-cloud-starter-configartifactId>
        dependency>
<dependency>
  <groupId>org.springframework.bootgroupId>
  <artifactId>spring-boot-starter-actuatorartifactId>
dependency>
<dependency>
    <groupId>org.springframework.cloudgroupId>
    <artifactId>spring-cloud-starter-netflix-eureka-clientartifactId>
dependency>
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-tomcatartifactId>
            <scope>providedscope>
        dependency>
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-testartifactId>
            <scope>testscope>
        dependency>
    dependencies>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloudgroupId>
                <artifactId>spring-cloud-dependenciesartifactId>
                <version>${spring-cloud.version}version>
                <type>pomtype>
                <scope>importscope>
            dependency>
        dependencies>
    dependencyManagement>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.bootgroupId>
                <artifactId>spring-boot-maven-pluginartifactId>
            plugin>
        plugins>
    build>

project>

View Code
2.配置文件
在bootstrap.properties中去掉指定配置服务的地址url，增加了最后的三个配置：
spring.cloud.config.name=neo-config
spring.cloud.config.profile=dev
spring.cloud.config.label=
spring.cloud.config.discovery.enabled=true
spring.cloud.config.discovery.serviceId=spring-cloud-config-server
eureka.client.serviceUrl.defaultZone=http://localhost:8088/eureka/

spring.cloud.config.discovery.enabled ：开启Config服务发现支持
spring.cloud.config.discovery.serviceId ：指定server端的name,也就是server端spring.application.name的值
eureka.client.serviceUrl.defaultZone ：指向注册中心的地址
3.启动类增加注解
在main方法中增加注解@EnableDiscoveryClient。
三、测试
1.分别启动eureka server、SpringCloudConfigServer、SpringCloudConfigClient。
2.浏览器输入http://localhost:8088/，可以看到注入到eureka server中的服务。

3.输入http://localhost:8001/neo-config/dev，可以看到配置文件的配置信息。

4.输入http://localhost:8002/hello，可以读取到配置文件的属性信息

参考：http://www.ityouknow.com/springcloud/2017/05/25/springcloud-config-eureka.html

Original: https://www.cnblogs.com/5ishare/p/11409371.html
Author: 社会主义接班人
Title: 微服务SpringCloud之Spring Cloud Config配置中心服务化