Some configuration parameters during development and after going online are not available, such as database connection, SMS verification, etc

springboot provides us with a way to differentiate environment configuration

Different environment configurations for the same profile

Three bars can be used in the same configuration file application.yml to distinguish the environment

server:
  port: 8080
spring:
  profiles:
    active: dev #Default boot environment

# Development environment configuration
---
spring:
  profiles: dev
myconf:
  user:
    name: Development-Ha-ha
# Production environment configuration
---
spring:
  profiles: prod
myconf:
  user:
    name: production-Hey hey hey

Startup class:

@SpringBootApplication
@RestController
public class ProfileApp {

    @Value("${myconf.user.name}")
    private String userName;

    public static void main(String[] args) {
        SpringApplication.run(ProfileApp.class, args);
    }

    @GetMapping("/name")
    public String getUserName(){
        return userName;
    }
}

After starting the project, view the log:

2018-11-23 16:59:53.131  INFO 90732 --- [  restartedMain] com.yimingkeji.profile.ProfileApp        : The following profiles are active: dev #The current profile is dev

Visit http://localhost:8080/name

Development - ha ha

If the boot environment is modified to prod

spring:
  profiles:
    active: prod

Visit again after startup http://localhost:8080/name

Production - hehe hehe

Different profiles, different environments

You can also add configuration files, named after the application environment, such as

application.yml #Default configuration
application-dev.yml # Development environment configuration
application-prod.yml # Production environment configuration

application.yml

server:
  port: 8080
spring:
  profiles:
    active: dev #Default boot environment

application-dev.yml

myconf:
  user:
    address: Xihu District, Hangzhou City

application-prod.yml

myconf:
  user:
    address: Beijing, Beijing

Interface:

@Value("${myconf.user.address}")
private String address;
@GetMapping("/address")
public String getAddress(){
    return address;
}

First set the boot environment to dev, and then access http://localhost:8080/address

Xihu District, Hangzhou City

Set environment to prod

Beijing, Beijing

Of course, these two methods can be used together. Keep the previous configuration in application.yml:

# Development environment configuration
---
spring:
  profiles: dev
myconf:
  user:
    name: Development-Ha-ha
# Production environment configuration
---
spring:
  profiles: prod
myconf:
  user:
    name: production-Hey hey hey

Modify interface:

@Value("${myconf.user.name}")
private String userName;
@Value("${myconf.user.address}")
private String address;
@GetMapping("/user")
public String user(){
    return "Full name:" + userName + ", Address:" + address;
}

Environment dev, accessing http://localhost:8080/user

Name: development haha, address: Xihu District, Hangzhou