spring boot配置文件：.yml与.properties

柔情只为你懂 2022-03-15 00:14 247阅读 0赞

SpringBoot使用一个以application命名的配置文件作为默认的全局配置文件。支持properties后缀结尾的配置文件或者以yml/yaml后缀结尾的YAML的文件配置。

### application.properties： ###

server.port=8002
    server.tomcat.uri-encoding=UTF-8
    server.tomcat.max-threads=1000
    server.tomcat.min-spare-threads=30
    spring.application.name=test
    spring.datasource.name=druidDataSource
    spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
    spring.datasource.druid.driver-class-name=com.mysql.jdbc.Driver
    spring.datasource.druid.url=jdbc:mysql://127.0.0.1:3306/test?useUnicode=true&zeroDateTimeBehavior=convertToNull&autoReconnect=true&characterEncoding=utf-8&useSSL=false
    spring.datasource.druid.username=root
    spring.datasource.druid.password=root
    spring.datasource.druid.filters=stat
    spring.datasource.druid.max-active=100
    spring.datasource.druid.initial-size=1
    spring.datasource.druid.max-wait=60000
    spring.datasource.druid.min-idle=1
    spring.datasource.druid.time-between-eviction-runs-millis=60000
    spring.datasource.druid.min-evictable-idle-time-millis=300000
    spring.datasource.druid.validation-query=select 1
    spring.datasource.druid.test-while-idle=true
    spring.datasource.druid.test-on-borrow=false
    spring.datasource.druid.test-on-return=false
    spring.datasource.druid.pool-prepared-statements=true
    spring.datasource.druid.max-open-prepared-statements=50
    spring.datasource.druid.max-pool-prepared-statement-per-connection-size=20

### application.yml： ###

# tomcat
    server:
      port: 8002
      tomcat:
          uri-encoding: UTF-8
          max-threads: 1000
          min-spare-threads: 30
    # spring boot admin
    spring:
      application:
        name: test
      datasource:
          name: druidDataSource
          type: com.alibaba.druid.pool.DruidDataSource
          druid:
            driver-class-name: com.mysql.jdbc.Driver
            url: jdbc:mysql://127.0.0.1:3306/test?useUnicode=true&zeroDateTimeBehavior=convertToNull&autoReconnect=true&characterEncoding=utf-8&useSSL=false
            username: root
            password: root
            filters: stat
            max-active: 100
            initial-size: 1
            max-wait: 60000
            min-idle: 1
            time-between-eviction-runs-millis: 60000
            min-evictable-idle-time-millis: 300000
            validation-query: select 1
            test-while-idle: true
            test-on-borrow: false
            test-on-return: false
            pool-prepared-statements: true
            max-open-prepared-statements: 50
            max-pool-prepared-statement-per-connection-size: 20

对比之后相信都看得出来，其实**application.properties**的功能和**application.yml**是一样的，不过因为**yml**文件是树状结构，写起来有更好的层次感，更易于理解，可读性更好一些，所以很多人都选择了**yml**文件。

值得注意的是**同一目录下，properties配置优先级 > YAML配置优先级。**

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