Spring profile注解

@Profile的作用：  Spring容器根据标识激活对应的profile注解，其关联的bean才会被注册到容器中。最常见的用途是区分开发环境，测试环境，生产环境信息

//配置文件DataSource.properties

dev.url="localhost"
dev.name="admin"
dev.pwd="123456"

test.url="151.125.33.62"
test.name="admin"
test.pwd="admin"


//对应开发环境信息
public class DevBean {

    @Value("${dev.url}")
    private String url;

    @Value("${dev.name}")
    private String name;

    @Value("${dev.pwd}")
    private String pwd;

    @Override
    public String toString() {
        return "DevBean{" +
                "url='" + url + '\'' +
                ", name='" + name + '\'' +
                ", pwd='" + pwd + '\'' +
                '}';
    }
}

//对应测试环境信息
public class TestBean {

    @Value("${test.url}")
    private String url;

    @Value("${test.name}")
    private String name;

    @Value("${test.pwd}")
    private String pwd;

    @Override
    public String toString() {
        return "TestBean{" +
                "url='" + url + '\'' +
                ", name='" + name + '\'' +
                ", pwd='" + pwd + '\'' +
                '}';
    }
}



@Configuration
@PropertySource("classpath:com/edu/profile/DataSource.properties")
public class Config {

    @Bean("devBean")
    @Profile("dev")
    public DevBean getDevBean(){
        return new DevBean();
    }

    @Bean("testBean")
    @Profile("test")
    public TestBean getTestBean(){
        return new TestBean();
    }



}



public class Test {

    public static void main(String[] args) {

        AnnotationConfigApplicationContext annotationConfigApplicationContext = new AnnotationConfigApplicationContext();
        annotationConfigApplicationContext.getEnvironment().setActiveProfiles("test"); //指定激活目标
        annotationConfigApplicationContext.register(Config.class);
        annotationConfigApplicationContext.refresh();


        if(annotationConfigApplicationContext.containsBean("testBean")){
            System.out.println("contains testBean");
            TestBean testBean = annotationConfigApplicationContext.getBean(TestBean.class);
            System.out.println(testBean);
        }

        if(annotationConfigApplicationContext.containsBean("devBean")){
            System.out.println("contains devBean");
            DevBean devBean = annotationConfigApplicationContext.getBean(DevBean.class);
            System.out.println(devBean);
        }


        annotationConfigApplicationContext.close();


    }
}