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  • SpringCloud-Config分布式配置中心

    一、基本使用

    1. Config-Server端

    (1)pom:

    1. parent依赖
      <parent>
          <groupId>org.springframework.boot</groupId>
          <artifactId>spring-boot-starter-parent</artifactId>
          <version>2.0.3.RELEASE</version>
      </parent>
    2. dependencyManagement
      <dependencyManagement>
          <dependencies>
              <dependency>
                  <groupId>org.springframework.cloud</groupId>
                  <artifactId>spring-cloud-dependencies</artifactId>
                  <version>Finchley.RELEASE</version>
                  <type>pom</type>
                  <scope>import</scope>
              </dependency>
          </dependencies>
      </dependencyManagement>
    3. dependencies
      <dependencies>
          <dependency>
              <groupId>org.springframework.cloud</groupId>
              <artifactId>spring-cloud-config-server</artifactId>
          </dependency>
      </dependencies>
    <?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">
        <parent>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-parent</artifactId>
            <version>2.0.3.RELEASE</version>
        </parent>
    
        <modelVersion>4.0.0</modelVersion>
    
        <artifactId>ConfigServer</artifactId>
        <version>1.0.0</version>
        <packaging>jar</packaging>
    
        <properties>
            <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
            <maven.compiler.source>1.8</maven.compiler.source>
            <maven.compiler.target>1.8</maven.compiler.target>
        </properties>
    
        <dependencyManagement>
            <dependencies>
                <dependency>
                    <groupId>org.springframework.cloud</groupId>
                    <artifactId>spring-cloud-dependencies</artifactId>
                    <version>Finchley.RELEASE</version>
                    <type>pom</type>
                    <scope>import</scope>
                </dependency>
            </dependencies>
        </dependencyManagement>
    
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-config-server</artifactId>
            </dependency>
        </dependencies>
    </project>
    查看全部pom代码

    (2)启动类:增加注解@EnableConfigServer,当然@SpringBootApplication也是必不可少的

    package com.luych.configServer;
    
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.cloud.config.server.EnableConfigServer;
    
    @SpringBootApplication
    @EnableConfigServer
    public class ConfigServerApplication {
    
        public static void main(String[] args) {
            SpringApplication.run(ConfigServerApplication.class, args);
        }
    
    }
    查看全部启动类代码

    (3)application.yml

    如果用git作配置仓库,则:

    spring:
      cloud:
        config:
          server:
            git:
              uri: https://gitee.com/LOVE0612/SpringCloud.git
              username: 562759534@qq.com
              password: 123@abc
    • 如果希望ConfigServer启动的时候就将配置文件clone下来,则可增加配置:spring.cloud.config.server.git.clone-on-start=true。
    • 如果配置文件不在git仓库的根目录下, 例如:如果配置文件在git仓库的properties目录下,则可增加配置spring.cloud.config.server.git.search-paths=properties。当有多个目录时逗号分隔。
    • 如果需要制定git clone后在本地存储位置,则可增加配置spring.cloud.config.server.git.baseDir。

    如果用svn作配置仓库,则:

    spring:
      cloud:
        config:
          server:
            svn:
              uri: https://192.168.1.111/svn/SpringCloud
              username: luyanchao
              password: abc@123
    • 同样存在spring.cloud.config.server.svn.search-paths配置项,使用方法同git。
    • 同样存在spring.cloud.config.server.git.baseDir配置项,使用方法同git。

    如果使用本地文件系统作配置仓库,则:

    spring:
      cloud:
        config:
          server:
            native:
              search-locations: properties
          profile: native
    • search-locations:可以是绝对路径也可以是classpath路径。
    • 使用本地文件系统作为配置仓库的最大缺点在于:如果ConfigServer多点部署以保证高可用时,需要将文件系统进行共享。

    如果使用多种/多个配置仓库,则:

    spring:
      cloud:
        config:
          server:
            git:
              uri: https://gitee.com/LOVE0612/SpringCloud.git
              username: 562759534@qq.com
              password: 1226ai0612
              order: 1
            svn:
              uri: https://192.168.1.111/svn/SpringCloud
              username: luyanchao
              password: abc@123
              order: 2
            native:
              search-locations: properties
              order: 3
          profile: native, git, svn
    • profile:设定哪些配置仓库可用,逗号分隔
    • order:配置仓库的优先级顺序,数字越低优先级越高
    server:
      port: 51011
    
    spring:
      application:
        name: ConfigServer
      cloud:
        config:
          server:
            git:
              uri: https://gitee.com/LOVE0612/SpringCloud.git
              search-paths: properties
              username: 562759534@qq.com
              password: 123@abc
              clone-on-start: true
    查看本例全部application.yml代码

    (3)run,并测试

    ConfigServer提供多种rest接口访问配置信息,可通过run日志查看:

    Mapped "{[/{name}-{profiles}.properties],methods=[GET]}" onto ...
    Mapped "{[/{name}-{profiles}.yml || /{name}-{profiles}.yaml],methods=[GET]}" onto ...
    Mapped "{[/{name}/{profiles:.*[^-].*}],methods=[GET]}" onto ...
    Mapped "{[/{label}/{name}-{profiles}.properties],methods=[GET]}" onto ...
    Mapped "{[/{label}/{name}-{profiles}.json],methods=[GET]}" onto ...
    Mapped "{[/{label}/{name}-{profiles}.yml || /{label}/{name}-{profiles}.yaml],methods=[GET]}" onto...
    Mapped "{[/{name}/{profiles}/{label:.*}],methods=[GET]}" onto ...
    Mapped "{[/{name}-{profiles}.json],methods=[GET]}" onto ...
    Mapped "{[/{name}/{profile}/{label}/**],methods=[GET],produces=[application/octet-stream]}" onto ...
    Mapped "{[/{name}/{profile}/{label}/**],methods=[GET]}" onto ...
    Mapped "{[/{name}/{profile}/**],methods=[GET],params=[useDefaultLabel]}" onto...
    • 参数name:即ConfigClient中定义的spring.application.name的值,后续会讲到
    • 参数profiles:这个不需要多说,用过SpringBoot的应该都知道
    • 参数label:如果是git或svn,label对应的是分之;如果是本地文件系统,label对应子目录名,例如:classpath:properties/{label}

    2. Config-Client端

    (1)pom:

    1. parent依赖
      <parent>
          <groupId>org.springframework.boot</groupId>
          <artifactId>spring-boot-starter-parent</artifactId>
          <version>2.0.3.RELEASE</version>
      </parent>
    2. dependencyManagement
      <dependencyManagement>
          <dependencies>
              <dependency>
                  <groupId>org.springframework.cloud</groupId>
                  <artifactId>spring-cloud-dependencies</artifactId>
                  <version>Finchley.RELEASE</version>
                  <type>pom</type>
                  <scope>import</scope>
              </dependency>
          </dependencies>
      </dependencyManagement>
    3. dependencies
      <dependencies>
          <dependency>
              <groupId>org.springframework.cloud</groupId>
              <artifactId>spring-cloud-config-client</artifactId>
          </dependency>
      </dependencies>

    (2)启动类:有@SpringBootApplication即可

    (3)bootstrap.yml,注意这里不是application.yml哦

    spring:
      application:
        name: ServiceGateway
      cloud:
        config:
          uri: http://127.0.0.1:51011
          profile: company
    • spring.application.name:项目名称
    • spring.cloud.config.uri:ConfigServer的地址
    • spring.cloud.config.profile:这个不需要多说,用过SpringBoot的应该都知道

    根据以上配置内容,可得知最终调用ConfigServer的接口地址为:http://127.0.0.1:51011/ServiceGateway-company.yml

    3. 多个Config-Client端公用配置

    如果多个Config-Client中有部分配置是相同的,为了避免出现重复代码,我们可以把这部分相同的配置抽出来单独做一个配置文件,命名为:application.yml、application.properties,或application-*.yml、application-*.properties,然后放到Config-Server端即可。

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  • 原文地址:https://www.cnblogs.com/LOVE0612/p/9878530.html
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