Spring Boot：（五）配置文件的加载位置

忘是亡心i 2022-09-10 08:23 168阅读 0赞

### 1. 加载顺序 ###

spring boot启动会扫描以下位置的application.properties或者application.yaml文件作为Spring boot的默认配置文件

*  file:`./config/`
 *  file:`./`
 *  classpath:`/config/`
 *  classpath:`/`

![在这里插入图片描述][watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBA5LqM6L-b5Yi25p2v6I6r5YGc_size_20_color_FFFFFF_t_70_g_se_x_16_pic_center]

以上是按照**优先级**`从高到底`的顺序，所有位置的文件都会被加载，高优先级配置内容会覆盖低优先级配置内容

SpringBoot会从这四个位置全部加载`主配置文件`，形成`互补配置`

优先级1的配置

server.port=8084

优先级2的配置

server.port=8083

优先级3的配置

server.port=8082

优先级4的配置

server.port=8081

执行结果：

.   ____          _            __ _ _
     /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
    ( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
     \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
      '  |____| .__|_| |_|_| |_\__, | / / / /
     =========|_|==============|___/=/_/_/_/
     :: Spring Boot ::                (v2.5.4)
    
    2021-09-06 22:18:17.917  INFO 6210 --- [           main] c.s.s.SpringBoot02ConfigApplication      : Starting SpringBoot02ConfigApplication using Java 1.8.0_192 on B000000383562P with PID 6210 (/Users/xxx/Desktop/java代码仓库/java-notes/spring-boot-02-config/target/classes started by liyabin01 in /Users/xxx/Desktop/java代码仓库/java-notes/spring-boot-02-config)
    2021-09-06 22:18:17.920  INFO 6210 --- [           main] c.s.s.SpringBoot02ConfigApplication      : No active profile set, falling back to default profiles: default
    2021-09-06 22:18:18.992  INFO 6210 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8084 (http)
    2021-09-06 22:18:18.998  INFO 6210 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
    2021-09-06 22:18:18.998  INFO 6210 --- [           main] org.apache.catalina.core.StandardEngine  : Starting Servlet engine: [Apache Tomcat/9.0.52]
    2021-09-06 22:18:19.054  INFO 6210 --- [           main] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
    2021-09-06 22:18:19.054  INFO 6210 --- [           main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 1059 ms
    2021-09-06 22:18:19.452  INFO 6210 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port(s): 8084 (http) with context path ''
    2021-09-06 22:18:19.463  INFO 6210 --- [           main] c.s.s.SpringBoot02ConfigApplication      : Started SpringBoot02ConfigApplication in 2.01 seconds (JVM running for 2.662)

我们也可以通过配置`spring.config.location`来改变默认配置

[watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBA5LqM6L-b5Yi25p2v6I6r5YGc_size_20_color_FFFFFF_t_70_g_se_x_16_pic_center]: /images/20220829/868a7a8ad31d48e090f62398795cd2f6.png