SpringCloud第八篇-Spring Cloud Config-此篇作废

柔光的暖阳◎ 2022-06-06 01:44 92阅读 0赞

#### 概述-此篇作废 ####

上一篇文章讲述了一个服务如何从配置中心读取文件，配置中心如何从远程git读取配置文件，当服务实例很多时，都从配置中心读取文件，这时可以考虑将配置中心做成一个微服务，将其集群化，从而达到高可用，架构图如下：

![这里写图片描述][0a6c44317197c740065744c69e6cb2cc.png]

### 项目准备 ###

*  config-eureka-server：eureka-server拷贝之前的工程命名为config-eureka-server，用作服务注册中心，端口修改为8889
 *  config-server服务配置服务端
 *  config-client 服务配置客户端

相对于上一篇我们只是在pom中加入了注册中心的依赖，并且在启动类上加上@EnableEurekaClient注解启用注册中心

### config-server ###

\#\#\#\#pom

<?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>
    
        <groupId>com.bamboo</groupId>
        <artifactId>config-server</artifactId>
        <packaging>jar</packaging>
        <version>1.0-SNAPSHOT</version>
    
    
        <parent>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-parent</artifactId>
            <version>1.5.2.RELEASE</version>
            <relativePath/> 
        </parent>
    
        <properties>
            <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
            <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
            <java.version>1.8</java.version>
        </properties>
    
        <dependencies>
    
    
            <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-eureka</artifactId>
            </dependency>
    
    
            
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-config-server</artifactId>
            </dependency>
    
        </dependencies>
    
        <dependencyManagement>
            <dependencies>
                <dependency>
                    <groupId>org.springframework.cloud</groupId>
                    <artifactId>spring-cloud-dependencies</artifactId>
                    <version>Camden.SR6</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/milestone</url>
                <snapshots>
                    <enabled>false</enabled>
                </snapshots>
            </repository>
        </repositories>
    
    </project>

#### application.properties ####

spring.application.name=config-server
    server.port=8888
    
    
    spring.cloud.config.server.git.uri=https://github.com/forezp/SpringcloudConfig/
    spring.cloud.config.server.git.searchPaths=respo
    spring.cloud.config.label=master
    spring.cloud.config.server.git.username=your username
    spring.cloud.config.server.git.password=your password
    
    #配置中心
    eureka.client.serviceUrl.defaultZone=http://localhost:8889/eureka/

#### java ####

package com.bamboo;
    
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.cloud.config.server.EnableConfigServer;
    import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
    
    /**
     * Created by xialeme on 2017/10/25.
     */
    @SpringBootApplication
    @EnableConfigServer//注解开启配置服务器的功能
    @EnableEurekaClient//启动注册中心客户端
    public class ConfigServerApplication {
    
        public static void main(String[] args) {
            SpringApplication.run(ConfigServerApplication.class, args);
        }
    }

### config-client ###

#### pom ####

<?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">
    
        <groupId>com.bamboo</groupId>
        <version>1.0-SNAPSHOT</version>
        <modelVersion>4.0.0</modelVersion>
        <artifactId>config-client</artifactId>
    
    
        <parent>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-parent</artifactId>
            <version>1.5.2.RELEASE</version>
            <relativePath/> 
        </parent>
    
        <properties>
            <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
            <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
            <java.version>1.8</java.version>
        </properties>
    
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-config</artifactId>
            </dependency>
    
            
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-eureka</artifactId>
            </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>Dalston.RC1</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/milestone</url>
                <snapshots>
                    <enabled>false</enabled>
                </snapshots>
            </repository>
        </repositories>
    
    </project>

\#\#\#\#bootstrap.properties  
配置文件bootstrap.properties，注意是bootstrap。

spring.application.name=config-client
    spring.cloud.config.label=master
    spring.cloud.config.profile=dev
    #配置请求的地址
    #spring.cloud.config.uri= http://localhost:8888/
    
    ##配置中心，启用发现，请求的服务是config-server
    eureka.client.serviceUrl.defaultZone=http://localhost:8889/eureka/
    spring.cloud.config.discovery.enabled=true
    spring.cloud.config.discovery.serviceId=config-server
    
    
    server.port=8881

\-eureka.client.serviceUrl.defaultZone 加上服务注册地址为http://localhost:8889/eureka/

*  spring.cloud.config.discovery.enabled 是从配置中心读取文件。
 *  spring.cloud.config.discovery.serviceId 配置中心的servieId，即服务名。

#### java ####

package com.bamboo;
    
    import org.springframework.beans.factory.annotation.Value;
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RestController;
    
    /**
     * Created by xialeme on 2017/10/25.
     */
    @SpringBootApplication
    @RestController
    @EnableEurekaClient//启动注册中心客户端
    public class ConfigClientApplication {
    
        public static void main(String[] args) {
            SpringApplication.run(ConfigClientApplication.class, args);
        }
    
        @Value("${foo}")
        String foo;
        //提供客户端调用的接口
        @RequestMapping(value = "/hello")
        public String hi(){
            return foo;
        }
    }

### 运行并查看结果 ###

依次启动config-eureka-server,config-server,config-client  
访问网址：http://localhost:8889/  
![这里写图片描述][0b00a6a4456d1d1400fb7d1308ae3a5b.png]

访问http://localhost:8881/hello，浏览器显示：

foo version 2

[0a6c44317197c740065744c69e6cb2cc.png]: /images/20220606/ba9d83d8b97a4023b0f1d41cbd8ade1a.png
[0b00a6a4456d1d1400fb7d1308ae3a5b.png]: /images/20220606/474866e2f21346748b214bc036a7d3ce.png