SpringBoot yml配置

application.yml

spring:
  profiles:
    active: @profileActive@
  datasource:
    driver-class-name: com.mysql.jdbc.Driver
    type: com.alibaba.druid.pool.DruidDataSource
    initialSize: 1
    maxActive: 20
    minIdle: 3
    maxWait: 60000
    timeBetweenEvictionRunsMillis: 60000
    minEvictableIdleTimeMillis: 300000
    validationQuery: SELECT 'x'
    testWhileIdle: true
    testOnBorrow: false
    testOnReturn: false
    poolPreparedStatements: true
    maxPoolPreparedStatementPerConnectionSize: 20
    #配置监控统计拦截的filters，去掉后监控界面sql无法统计，'wall'用于防火墙
    #filters: stat,wall,slf4j
    #通过connectProperties属性来打开mergeSql功能；慢SQL记录
    #connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000
  jpa:
    properties:
      hibernate:
        hbm2ddl:
          auto: update
          #update级别会根据bean创建/更新表结构
---
spring:
  profiles: dev
  datasource:
    url: jdbc:mysql://localhost:3306/dbName?allowMultiQueries=true&useSSL=false
    username: root
    password: 
---
spring:
  profiles: test
  datasource:
    url: jdbc:mysql://localhost:3306/dbName?allowMultiQueries=true&useSSL=false
    username: root
    password: 
---
spring:
  profiles: prod
  datasource:
    url: jdbc:mysql://localhost:3306/dbName?allowMultiQueries=true&useSSL=false
    username: root
    password: 
---

注意：
1、value前面的冒号后面要带空格
2、缩进使用空格而不要用制表符

pom.xml

<profiles>
    <profile>
        <id>dev</id>
        <properties>
            <profileActive>dev</profileActive>
        </properties>
        <activation>
            <activeByDefault>true</activeByDefault>
        </activation>
    </profile>
    <profile>
        <id>test</id>
        <properties>
            <profileActive>test</profileActive>
        </properties>
    </profile>
    <profile>
        <id>prod</id>
        <properties>
            <profileActive>prod</profileActive>
        </properties>
    </profile>
  </profiles>

run：
运行Application.class 可设置Program arguments：--spring.profiles.active=prod
build：
mvn clean package -Dmaven.test.skip=true -P prod