public class MyPropertySource extends EnumerablePropertySource<Map<String,String>> {
  public MyPropertySource(String name, Map source) {
    super(name, source);
  }
  //获取所有的配置名字
  @Override
  public String[] getPropertyNames() {
    return source.keySet().toArray(new String[source.size()]);
  }
  //根据配置返回对应的属性
  @Override
  public Object getProperty(String name) {
    return source.get(name);
  }
}

public class MyPropertySourceLocator implements PropertySourceLocator {
  @Override
  public PropertySource<?> locate(Environment environment) {
    //简单起见，这里直接创建一个map,你可以在这里写从哪里获取配置信息。
    Map<String,String> properties = new HashMap<>();
    properties.put("myName","lizo");
    MyPropertySource myPropertySource = new MyPropertySource("myPropertySource",properties);
    return myPropertySource;
  }
}

@Configuration
public class MyConfigBootstrapConfiguration {
  @Bean
  public MyPropertySourceLocator myPropertySourceLocator(){
    return new MyPropertySourceLocator();
  }
}

org.springframework.cloud.bootstrap.BootstrapConfiguration=\
com.lizo.MyConfigBootstrapConfiguration

@SpringBootApplication
public class Test2 {
  public static void main(String[] args) throws SQLException {
    ConfigurableApplicationContext run = SpringApplication.run(Test2.class, args);
    Ser bean = run.getBean(Ser.class);
    System.out.println(bean.getMyName());
  }
  @Component
  public static class Ser{
    @Value("${myName}")
    private String myName;
    public String getMyName() {
      return myName;
    }
    public void setMyName(String myName) {
      this.myName = myName;
    }
  }
}

my.name=${myName}