SpringBoot basic configuration

Table of contents

basic configuration

Modify server port

 Modify the output banner (logo)

set log

Three configuration file types

Property disappearing solution

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basic configuration

attribute configuration

Modify server port

 Just write in Application.properties

# 应用服务 WEB 访问端口
server.port=80

after running

 access

 Modify the output banner (logo)

The default is this

can be turned off to generate this

#关闭banner
spring.main.banner-mode=off

 It doesn't appear after running

 We can import the text or pictures we want in the configuration file, and springboot will automatically generate them for us. After importing, we can put them under resource

#修改logo
spring.banner.image.location=图片或文件位置

I imported the picture here.

set log

#日志
logging.level.root=debug

Set to debug level, there are many, from initialization to build successfully printed out. Generally, it will be used only when it is adjusted incorrectly 

The normal log is info (default)

#日志
logging.level.root=info

 error level, that is, only when there is an error will there be a log.

#日志
logging.level.root=error

 View all configuration configurations in springbooot official website

 Ctrl+f searches for related configurations, which can be ambiguously queried

summary:

Each configuration corresponds to a technology

After importing the corresponding starter in SpringBoot, provide the corresponding configuration properties

Writing SpringBoot configuration is written in the form of keywords + prompts

Three configuration file types

application.yml (mainstream)

server:
  port: 81

application.yaml

server:
  port: 82

application.properties

server.port=80

When three profiles coexist

The priority among them is

properties>yml>yaml

The same configuration in different configuration files will be kept according to the higher priority.

If there is 1 in file a, 2 in file b, and 3 in file c, then it will be 123 in the end.

Property disappearing solution

In the yml and yaml configurations, the input attributes are not prompted. The prompt scheme is provided by idea, not by springboot. There is no prompt in idea because idea thinks this is not a configuration file.

 when finished

 This tells idea that they are all configuration files, and there are prompt messages