springboot bootstrap.yml和application.yml

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#springboot bootstrap.yml和appli

于 2019-12-20 10:33:32 首次发布

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本文解析了SpringBoot中bootstrap.yml, application.yml和application.properties的加载顺序与覆盖规则，通过实例演示了不同配置文件如何影响应用端口设置。

springboot bootstrap.yml和application.yml

bootstrap.yml在application.yml之前加载，一般在spring cloud使用配置中心时使用；

bootstrap.yml同名属性会被application.yml覆盖；

application.yml在application.properties之前加载，同名属性会被application.properties覆盖

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示例

导入jar包，使bootstrap.yml得配置生效

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-context</artifactId>
            <version>2.2.0.RELEASE</version>
        </dependency>

***************

bootstrap.yml

server:
  port: 8081

启动应用，控制台输出

2019-12-20 11:03:50.672  INFO 20380 --- [           main] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2019-12-20 11:03:50.676  INFO 20380 --- [           main] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 1370 ms
2019-12-20 11:03:50.936  INFO 20380 --- [           main] o.s.s.concurrent.ThreadPoolTaskExecutor  : Initializing ExecutorService 'applicationTaskExecutor'
2019-12-20 11:03:51.289  INFO 20380 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port(s): 8081 (http) with context path ''
2019-12-20 11:03:51.296  INFO 20380 --- [           main] com.example.demo.DemoApplication         : Started DemoApplication in 3.264 seconds (JVM running for 6.268)

应用监听端口为8081，bootstrap.yml生效

***************

添加application.yml

server:
  port: 8082

启动应用，控制台输出

2019-12-20 11:07:33.062  INFO 22148 --- [           main] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2019-12-20 11:07:33.062  INFO 22148 --- [           main] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 739 ms
2019-12-20 11:07:33.179  INFO 22148 --- [           main] o.s.s.concurrent.ThreadPoolTaskExecutor  : Initializing ExecutorService 'applicationTaskExecutor'
2019-12-20 11:07:33.374  INFO 22148 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port(s): 8082 (http) with context path ''
2019-12-20 11:07:33.377  INFO 22148 --- [           main] com.example.demo.DemoApplication         : Started DemoApplication in 2.011 seconds (JVM running for 3.696)

应用监听端口为8082，application.yml覆盖bootstrap.yml的端口配置

***************

添加application.properties

server.port=8083

启动应用，控制台输出

2019-12-20 11:11:04.004  INFO 608 --- [           main] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2019-12-20 11:11:04.004  INFO 608 --- [           main] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 844 ms
2019-12-20 11:11:04.149  INFO 608 --- [           main] o.s.s.concurrent.ThreadPoolTaskExecutor  : Initializing ExecutorService 'applicationTaskExecutor'
2019-12-20 11:11:04.316  INFO 608 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port(s): 8083 (http) with context path ''
2019-12-20 11:11:04.320  INFO 608 --- [           main] com.example.demo.DemoApplication         : Started DemoApplication in 2.018 seconds (JVM running for 3.692)

应用监听端口为8083，application.properties覆盖前面的配置信息