springboot加载复杂的yml文件获取不到值的解决方案

package com.boot.config;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

import org.springframework.beans.factory.annotation.Value;

import org.springframework.boot.context.properties.ConfigurationProperties;

import org.springframework.context.ApplicationEvent;

import org.springframework.context.ApplicationListener;

import org.springframework.context.annotation.Configuration;

import org.springframework.context.annotation.PropertySource;

@Configuration

@ConfigurationProperties (prefix = "spring.redis;pool.max;pool.min" )

@PropertySource (value = "classpath:redis.yml" )

public class RedisConfiguration implements ApplicationListener<ApplicationEvent> {

     @Value ( "${host}" )

     private String host;

     @Value ( "${port}" )

     private Long port;

     @Value ( "${timeout}" )

     private Long timeout;

     @Value ( "${database}" )

     private Long database;

     @Value ( "${wait}" )

     private Long poolMaxWait;

     @Value ( "${idle}" )

     private Long poolMaxIdle;

     @Value ( "${idle}" )

     private Long poolMinIdle;

     @Value ( "${active}" )

     private Long poolMaxActive;

     public void onApplicationEvent(ApplicationEvent event) {

         // 打印属性

         System.out.println( "============= redisConnect ================" );

         System.out.println( this .toString());

     }

     @Override

     public String toString() {

         return "RedisConfiguration [host=" + host + ", port=" + port + ", timeout=" + timeout

                 + ", database=" + database + ", poolMaxWait=" + poolMaxWait + ", poolMaxIdle="

                 + poolMaxIdle + ", poolMinIdle=" + poolMinIdle + ", poolMaxActive=" + poolMaxActive

                 + "]" ;

     }

}

#多层配置

spring:

     redis:

         database: 0

         host: localhost

         port: 6379

         timeout: 0

         pool:

            max:

               active: 8

               wait: -1

               idle: 8

            min:

               idle: 0

import org.springframework.boot.SpringApplication;

import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication

public class App {

      public static void main(String[] args) {

        SpringApplication app = new SpringApplication(App. class );

        ConfigurableApplicationContext context = app.run(args);

        System.out.println(context.getEnvironment().getProperty( "jdbc.pwd" ));  

        context.close();

    }

}

jdbc:

  pwd: 123456  #冒号和数字之间有一个空格，没有否则获取失败，pwd前面有缩进两个字符