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SpringCloud配置中心搭建与使用(本地存储配置)

作者:互联网

本文涉及要点:

SpringBoot版本:2.0.4.RELEASE

SpringCloud版本:Finchley.SR1

application.name:

服务端:config-center

客户端:static-configer

依赖

服务端:

<dependencies>
  <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>Finchley.SR1</version>
      <type>pom</type>
      <scope>import</scope>
    </dependency>
  </dependencies>
</dependencyManagement>

客户端:

<dependencies>
  <dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-config</artifactId>
  </dependency>
</dependencies>

配置

服务端:

spring:
  application:
    name: config-center
  profiles:
    #native表示本地方式
    active: native
  cloud:
    config:
      server:
        native:
          # 配置文件存放路径
          search-locations: classpath:/cnf

客户端:

spring:
  application:
    name: static-configer
  profiles:
    active: qas
# 配置中心存放配置文件格式:${application.name}-${profiles.active}.myl
# 例如static-configer-dev.yml、static-configer-qas.yml
# 通过上述两个配置去配置中心读取对应的配置文件
  cloud:
    config:
      # uri 配置中心地址
      uri: http://localhost:8000
      fail-fast: true

文件

服务端:

在src/main/resource/新增cnf文件夹,不推荐使用config作为名称,因为config会作为配置中心本身自己的配置文件夹

并在cnf中新增三个配置文件static-configer-dev.yml、static-configer-prd.yml、static-configer-qas.yml,分别填写不同配置

配置效果与写在本地一致

启动

先启动服务端,后启动客户端

客户端日志打印了如下日志表示配置成功:

Fetching config from server at : http://localhost:8000
Located environment: name=static-configer, profiles=[qas], label=null, version=null, state=null
Located property source: CompositePropertySource {name='configService', propertySources=[MapPropertySource {name='classpath:/config/static-configer-qas.yml'}]}
The following profiles are active: qas

访问

无论配置文件是什么格式,yml或者properties

浏览器访问http://localhost:8000/static-configer-dev.ymlspring.application.name{spring.application.name}-spring.application.name−{profile})能输出yml格式的配置

spring:
  cloud:
    config:
      override-none: true

访问 http://localhost:8000/static-configer-dev.properties 就能输出properties格式的配置

spring.cloud.config.override-none: true

或者:http://localhost:8000/static-configer/devspring.application.name/{spring.application.name}/spring.application.name/{profile})

{"name":"static-configer","profiles":["dev"],"label":null,"version":null,"state":null,"propertySources":[{"name":"classpath:/cnf/application.yml","source":{"spring.cloud.config.override-none":true}}]}

优先级

关键配置:

注意:这段配置是写在Config Server的配置文件中才会生效,Config Client则会报错

#默认情况下:
spring:
  cloud:
    config:
      # 配置中心配置覆盖Java运行时参数。
      # 值为true时:java -jar -Dserver.port=6666 myapp.jar 指定端口将被远程配置覆盖掉
      # 外部属性覆盖系统属性,系统属性:JVM -Dparam
      overrideSystemProperties: true
      allowOverride: true
      override-none: false

源码如下:


  //org.springframework.cloud.bootstrap.config.PropertySourceBootstrapProperties.java

	/**
	 * Flag to indicate that the external properties should override system properties.
	 * Default true.
	 */
	private boolean overrideSystemProperties = true;

	/**
	 * Flag to indicate that {@link #isOverrideSystemProperties()
	 * systemPropertiesOverride} can be used. Set to false to prevent users from changing
	 * the default accidentally. Default true.
	 */
	private boolean allowOverride = true;

	/**
	 * Flag to indicate that when {@link #setAllowOverride(boolean) allowOverride} is
	 * true, external properties should take lowest priority, and not override any
	 * existing property sources (including local config files). Default false.
	 */
	private boolean overrideNone = false;

优先级默认情况下:

配置中心>本地配置

overrideNone:

allowOverride:

overrideSystemProperties:

配置中心公共配置

比如,serverA-dev.yml、serverB-dev.yml如果两个服务都需要使用同一个服务发现(Eureka)的配置,那就要在不同的配置文件中配置多遍,万一Eureka地址改了,这样的话,每个配置文件都要修改一遍,非常难以维护

与一般服务一样,指定的配置文件存放路径下(classpath:/cnf)application.yml(properties)将会被当做所有服务的公共配置

application-profile(dev\qas\prd).yml会被作为对应的环境的公共文件

例如存在application-dev.yml、application-qas.yml、application-prd.yml

编译profile=dev环境时application-dev.yml中的配置会被应用到所有服务。

基于HTTP Basic的用户认证

服务端新增配置:

pom.xml:

<dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-security</artifactId>
</dependency>

application.yml:

spring: 
  security: 
    user: 
      name: admin
      password: admin123

客户端新增配置:

方式一:

spring: 
  clould: 
    config: 
      username: admin
      password: admin123

方式二:

spring: 
  clould: 
    config:
      uri: http://admin:admin123@localhost:8080/

如果方式一和方式二合并:

spring.cloud.config.password和spring.cloud.config.username的优先级更高,URL中包含的账号和密码将无效。

spring: 
  clould: 
    config: 
      uri: http://admin:admin123@localhost:8080/
      username: admin2
      password: admin456

标签:true,spring,配置,存储配置,application,SpringCloud,config,yml,搭建
来源: https://blog.csdn.net/MM889900/article/details/88981247