spring boot配置文件：application.yml （yml与properties文件优缺对比）

Bertha 。 2022-06-05 05:42 192阅读 0赞

现在我们的application.properties文件内容是：

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1.  server.port=8090 
2.  server.session-timeout=30 
3.  server.context-path= 
4.  server.tomcat.max-threads=0 
5.  server.tomcat.uri-encoding=UTF-8 
6.  
7.  spring.datasource.url = jdbc:mysql://localhost:3306/newbirds 
8.  spring.datasource.username = root 
9.  spring.datasource.password = mymysql 
10. spring.datasource.driverClassName = com.mysql.jdbc.Driver 
11. \# Specify the DBMS 
12. spring.jpa.database = MYSQL 
13. \# Show or not log for each sql query 
14. spring.jpa.show-sql = true 
15. \# Hibernate ddl auto (create, create-drop, update) 
16. spring.jpa.hibernate.ddl-auto = update 
17. \# Naming strategy 
18. spring.jpa.hibernate.naming-strategy = org.hibernate.cfg.ImprovedNamingStrategy 
19. 
20. \# stripped before adding them to the entity manager) 
21. spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.MySQL5Dialect

而官方给的很多demo，都是用yml文件配置的。

yml文件的好处，天然的树状结构，一目了然。不过当时把application.properties 改成 application.yml还是痛苦了一会儿。

下面是置换后的application.yml内容：

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1.  server: 
2.   port: 8090 
3.   session-timeout: 30 
4.   tomcat.max-threads: 0 
5.   tomcat.uri-encoding: UTF-8 
6.  
7.  spring: 
8.   datasource: 
9.   url : jdbc:mysql://localhost:3306/newbirds 
10.  username : root 
11.  password : mymysql 
12.  driverClassName : com.mysql.jdbc.Driver 
13.  jpa: 
14.  database : MYSQL 
15.  show-sql : true 
16.  hibernate: 
17.  ddl-auto : update 
18.  naming-strategy : org.hibernate.cfg.ImprovedNamingStrategy 
19.  properties: 
20.  hibernate: 
21.  dialect : org.hibernate.dialect.MySQL5Dialect

注意点：

1，原有的key，例如spring.jpa.properties.hibernate.dialect，按“.”分割，都变成树状的配置

2，key后面的冒号，后面一定要跟一个空格

3，把原有的application.properties删掉。然后一定要执行一下 maven -X clean install

[view plain]: http://blog.csdn.net/yihui823/article/details/51836880#