java B2B2C 多租戶電子商城系統-（六）分佈式配置中心(Spring Cloud Config)

1、簡介

在分佈式系統中，因爲服務數量巨多，爲了方便服務配置文件統一管理，實時更新，因此須要分佈式配置中心組件。在Spring Cloud中，有分佈式配置中心組件spring cloud config ，它支持配置服務放在配置服務的內存中（即本地），也支持放在遠程Git倉庫中。在spring cloud config 組件中，分兩個角色，一是config server，二是config client。

2、構建Config Server

建立一個spring-boot項目，取名爲config-server,其pom.xml:

<?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.forezp</groupId>
    <artifactId>config-server</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>
 
    <name>config-server</name>
    <description>Demo project for Spring Boot</description>
 
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.2.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </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-config-server</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-eureka</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>複製代碼

在程序的入口Application類加上@EnableConfigServer註解開啓配置服務器的功能，代碼以下：

@SpringBootApplication
@EnableConfigServer
public class ConfigServerApplication {
 
    public static void main(String[] args) {
        SpringApplication.run(ConfigServerApplication.class, args);
    }
}複製代碼

須要在程序的配置文件application.properties文件配置如下：

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複製代碼

• spring.cloud.config.server.git.uri：配置git倉庫地址
• spring.cloud.config.server.git.searchPaths：配置倉庫路徑
• spring.cloud.config.label：配置倉庫的分支
• spring.cloud.config.server.git.username：訪問git倉庫的用戶名
• spring.cloud.config.server.git.password：訪問git倉庫的用戶密碼

啓動程序：訪問http://localhost:8888/foo/dev

{"name":"foo","profiles":["dev"],"label":"master",
"version":"792ffc77c03f4b138d28e89b576900ac5e01a44b","state":null,"propertySources":[]}複製代碼

架構代碼以下:

Spring Cloud大型企業分佈式微服務雲構建的B2B2C電子商務平臺源碼請加企鵝求求：一零三八七七四六二六