SpringCloud、SpringBoot多环境的配置文件active的顺序问题

引言：目前主流框架Spring cloud，Spring boot，此类项目启动时候非常重要的一点就是加载配置文件，bootstrap.yml的加载顺序优先于application.yml这个是一个共识，在开中，我们经常有dev、sit、uat、pro多环境，为了便捷的切换环境，引用相应的配置文件，项目中可能会有多个配置文件，那么他们都分别怎么加载呢？

一 配置文件

1.1 bootstrapt.yml

server:
  port: 8030
  servlet:
    context-path: /api/csdn-boot

management:
  endpoint:
    health:
      show-details: ALWAYS
  server:
    port: 8031
  endpoints:
    web:
      exposure:
        include: '*'
  health:
    sentinel:
      enabled: false

spring:
  profiles:
    active: dev #设置激活
  application:
    name: csdn-boot
  cloud:  #这一块其实是多余的，激活dev，会去读取bootstrapt-dev.yml覆盖下面的
    nacos:
      config:
        server-addr: nacos.csdn-boot:8848
        group: PO_ROS_PLATFORM
        file-extension: yaml
        shared-configs[0]:
          dataId: po_ros-common.yaml
          group: PO_ROS_PLATFORM
          refresh: true
        enabled: true
        max-retry: 10
        ext-config[0]:
          dataId: tibcorv.properties
          group: PO_ROS_PLATFORM
          refresh: true
      discovery:
        server-addr: nacos.csdn-boot:8848
        group: DEFAULT_GROUP
        metadata: {"service.desc": "csdn-boot业务"}
        enabled: true
        service: csdn-boot
    sentinel:
      #取消Sentinel控制台 懒加载
      #eager: true
      enabled: false
      transport:
        dashboard: sentinel.csdn-boot:8080
        port: 8032
        datasource:
          ds1:
          nacos:
          server-addr: nacos.csdn-boot:8848
          dataId: csdn-boot.json
          groupId: PO_ROS_PLATFORM
          ruleType: flow
          dataType: json  

1.2 application.yml

spring:
  #profiles:
    #active: sit   #没有意义的配置
  zipkin:
    base-url: http://
    enabled: false
    discovery-client-enabled: false
    compression:
      enabled: true
    sender:
      type: web
    service:
      name: ${spring.application.name}
  sleuth:
    sampler:
      probability: 1
  devtools:
    restart:
      enabled: true
  #自动化配置 例外处理
  autoconfigure:
    exclude: com.alibaba.druid.spring.boot.autoconfigure.DruidDataSourceAutoConfigure
  datasource:
    type: com.alibaba.druid.pool.DruidDataSource
    dynamic:
      primary: dataTest # 默认db
      datasource:
        dw4MesTest:
          url: jdbc:oracle:thin:@IP:1521:实例名
          username: 123456
          password: 123
          driver-class-name: oracle.jdbc.OracleDriver
      druid:
        max-active: 50
        max-wait: 10000
        min-idle: 3
        initial-size: 50
  mvc:
    throw-exception-if-no-handler-found: true
  main:
    allow-bean-definition-overriding: true
  servlet:
    multipart:
      max-file-size: 100MB
      max-request-size: 100MB
  redis: #不配置 默认就是localhost
      host: IP
      port: 6379
      password:
      database: 1

mybatis-plus:
  mapper-locations: classpath:/mapper/*Mapper.xml,classpath:/mapper/*/*Mapper.xml,classpath:/mapper/*/*/*Mapper.xml
  #实体扫描，多个package用逗号或者分号分隔
  type-aliases-package: 
  #打印sql日志
  configuration:
    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl

feign:
  sentinel:
    enabled: true
  httpclient:
    enabled: true
    # 最大连接数，默认：200
    max-connections: 1000
    # 最大路由，默认：50
    max-connections-per-route: 50
    # 连接超时，默认：2000/毫秒
    connection-timeout: 3000
    # 生存时间，默认：900L
    time-to-live: 900
    time-to-live-unit: seconds
  client:
    config:
      default:
        connectTimeout: 3000
        readTimeout: 40000

po_ros:
  gateway:
    enabled: false
    gatewayUrl: http://kong.
  debug: true
  sername: csdn-boot
  #系统标识，读取maven property
  syscode: '@syscode@'
  # swagger配置
  swagger:
    version: 1.0
    title: twork服务
    #rest响应aop
    base-package: cn.companyName
  rest-aop:
    base-packages: cn.companyName
  permission:
    enabled: false
debug: false

1.3 bootstrapt-dev.yml

server:
  port: 8030
  servlet:
    context-path: /api/csdn-boot

management:
  endpoint:
    health:
      show-details: ALWAYS
  server:
    port: 8031
  endpoints:
    web:
      exposure:
        include: '*'
  health:
    redis:
      enabled: false
    sentinel:
      enabled: false

spring:
  #profiles:
    #active: dev  没有意义的配置，如果上面的配置和bootstrapt.yml一直也可以不要，引入的意义一般是nacos地址不同。
  application:
    name: csdn-boot
  cloud:
    nacos:
      config:
        server-addr: nacos.csdn-boot:8848
        group: PO_ROS_PLATFORM
        file-extension: yaml
        shared-configs[0]:
          dataId: po_ros-common.yaml
          group: PO_ROS_PLATFORM
          refresh: true
        enabled: false
        max-retry: 10
      discovery:
        server-addr: nacos.csdn-boot:8848
        group: DEFAULT_GROUP
        metadata: { "service.desc": "csdn-boot业务" }
        enabled: false
        service: csdn-boot
    sentinel:
      #取消Sentinel控制台 懒加载
      #eager: true
      enabled: false
      transport:
        dashboard: sentinel.csdn-boot:8080
        port: 8032
        datasource:
          ds1:
          nacos:
          server-addr: nacos.csdn-boot:8848
          dataId: csdn-boot.json
          groupId: PO_ROS_PLATFORM
          ruleType: flow
          dataType: json

1.4 application-dev.yml

spring:
  #profiles:
    #active: local  #没有意义的配置
  zipkin:
    base-url: http://
    enabled: false
    discovery-client-enabled: false
    compression:
      enabled: true
    sender:
      type: web
    service:
      name: ${spring.application.name}
  sleuth:
    sampler:
      probability: 1
  #自动化配置  例外处理
  autoconfigure:
    exclude: com.alibaba.druid.spring.boot.autoconfigure.DruidDataSourceAutoConfigure
  datasource:
    type: com.alibaba.druid.pool.DruidDataSource
    dynamic:
      primary: databaseb #默认db
      datasource:
        dw4testdb:
          url: jdbc:oracle:thin:@IP:1521:实例  #dev
          username: 123
          password: 123456
          driver-class-name: oracle.jdbc.OracleDriver
      druid:
        max-active: 50
        max-wait: 10000
        min-idle: 3
        initial-size: 50
  mvc:
    throw-exception-if-no-handler-found: true
  main:
    allow-bean-definition-overriding: true
  servlet:
    multipart:
      max-file-size: 100MB
      max-request-size: 100MB
  #redis 配置
  redis:
    #    host: 127.0.0.1
    host: 10.XX.X.XX
    port: 6379
    password:
    database: 1

mybatis-plus:
  mapper-locations: classpath:/mapper/*Mapper.xml,classpath:/mapper/*/*Mapper.xml,classpath:/mapper/*/*/*Mapper.xml
  #实体扫描，多个package用逗号或者分号分隔
  type-aliases-package: cn.company.package.modules.*.entity
  # 打印sql日志
  configuration:
    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl

feign:
  sentinel:
    enabled: true
  httpclient:
    enabled: true
    # 最大连接数，默认：200
    max-connections: 1000
    # 最大路由，默认：50
    max-connections-per-route: 50
    # 连接超时，默认：2000/毫秒
    connection-timeout: 3000
    # 生存时间，默认：900L
    time-to-live: 900
    time-to-live-unit: seconds
  client:
    config:
      default:
        connectTimeout: 3000
        readTimeout: 40000

po_ros:
  gateway:
    enabled: false
    gatewayUrl: http://kong.
  debug: true
  sername: csdn-test
  #系统标识，读取maven property
  syscode: '@syscode@'
  # swagger配置
  swagger:
    version: 1.0
    title: twork服务
    #rest响应aop
    base-package: cn.company
  rest-aop:
    base-packages: cn.companyname
  permission:
    enabled: false
debug: false

1.5 POM文件配置

        
            
            prod
            
                prod
            
        
        
            
            dev
            
                dev
            
            
                true
            
        
        
            
            sit
            
                sit
            
        
    

1.6 文件结构

二 实践与结论

将bootstrapt-dev.yml的context-path修改为api2/csdn-boot,启动项目发现访问地址为api2/csdn-boot。但是这可能是pom起作用，直接读取了bootstrapt-dev.yml,也可能是读取了bootstrapt.yml来激活的dev配置。

接着我们把bootstrapt.yml删除掉active的标签配置，启动项目显示访问地址为api/csdn-boot，同时报错连接不上application.yml中配置的redis地址。

结论：没有active的配置，并不会读取dev，pom中的配置并不能直接激活dev配置。

bootstrapt.yml--->bootstrapt-dev.yml--->application-dev.yml

完结！！！