SpringBoot profiles
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SpringBoot 提供了profiles，可以實(shí)現(xiàn)在不同環(huán)境下應(yīng)用程序配置的隔離性。
?
application.yaml
spring:
??profiles:
????active:?prod
application:
??appId:?app01??application-dev.yaml
env:
??name:?'this?is?dev'application-test.yaml
env:
??name:?'this?is?test'
application-prod.yaml
env:
??name:?'this?is?prod'
Runner.java
package?com.stone.springboot.study;
import?org.springframework.beans.factory.annotation.Autowired;
import?org.springframework.boot.ApplicationArguments;
import?org.springframework.boot.ApplicationRunner;
import?org.springframework.core.env.Environment;
import?org.springframework.stereotype.Component;
import?org.springframework.util.StringUtils;
@Component
public?class?Runner?implements?ApplicationRunner?{
????
????@Autowired
????Environment?environment;
????
????@Override
????public?void?run(ApplicationArguments?args)?throws?Exception?{
????????String[]?activeProfiles?=?environment.getActiveProfiles();
????????System.out.println("actvie?profiles->"+?StringUtils.arrayToDelimitedString(activeProfiles,?","));
????????String?property?=?environment.getProperty("env.name");
????????System.out.println("env.name->"+property);
????????
????????String?property1?=?environment.getProperty("application.appId");
????????System.out.println("application.appId->"+property1);
????}
}
?
輸出結(jié)果：
actvie?profiles->prod
env.name->this?is?prod
application.appId->app01
方式一：application.yaml中 定義spring.profiles.active
修改application.yaml
spring:
??profiles:
????active:?test
application:
??appId:?app01
輸出結(jié)果：
actvie?profiles->test
env.name->this?is?test
application.appId->app01
方式二：命令行參數(shù) --spring.profiles.active=prod
輸出如下：
actvie?profiles->prod
env.name->this?is?prod
application.appId->app01
說明：命令行屬性優(yōu)先級(jí)高與application.yaml中定義的屬性
?
方式三：編碼形式? SpringApplication.setAdditionalProfiles();
?
Application.javapackage?com.stone.springboot.study;
import?org.springframework.boot.SpringApplication;
import?org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public?class?Application?{
????public?static?void?main(String[]?args)?{
????????SpringApplication?app?=?new?SpringApplication(Application.class);
????????app.setAdditionalProfiles("my");
????????app.run(args);
????}
}
?
application-my.yaml
my:
??name:?'9wan'
?
Runner.java
package?com.stone.springboot.study;
import?org.springframework.beans.factory.annotation.Autowired;
import?org.springframework.boot.ApplicationArguments;
import?org.springframework.boot.ApplicationRunner;
import?org.springframework.core.env.Environment;
import?org.springframework.stereotype.Component;
import?org.springframework.util.StringUtils;
@Component
public?class?Runner?implements?ApplicationRunner?{
????
????@Autowired
????Environment?environment;
????
????@Override
????public?void?run(ApplicationArguments?args)?throws?Exception?{
????????String[]?activeProfiles?=?environment.getActiveProfiles();
????????System.out.println("actvie?profiles->"+?StringUtils.arrayToDelimitedString(activeProfiles,?","));
????????String?property?=?environment.getProperty("env.name");
????????System.out.println("env.name->"+property);
????????
????????String?property1?=?environment.getProperty("application.appId");
????????System.out.println("application.appId->"+property1);
????????
????????String?property2?=?environment.getProperty("my.name");
????????System.out.println("my.name->"+property2);
????}
}
輸出結(jié)果：
actvie?profiles->my,prod
env.name->this?is?prod
application.appId->app01
my.name->9wan
說明：SpringApplication.setAdditionalProfiles("my") 添加的profile會(huì)自動(dòng)設(shè)置為激活狀態(tài)并加載
?
?
總結(jié)
SpringBoot 提供profiles可進(jìn)行多環(huán)境配置，再通過spring.profiles.actvife來激活特定配置。在多環(huán)境下節(jié)省了配置修改的成本。方式一可以把不同環(huán)境下相同的屬性配置放到application.yaml，避免了重復(fù)定義；? 個(gè)人也更推薦這種配置方式。
關(guān)于application-{profile}.yaml或properties文件命名，這個(gè)是SpringBoot約定的這種格式。當(dāng)沒有激活的配置時(shí)，默認(rèn)會(huì)加載application-default文件
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