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) {
        // 打印屬性
		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
	            + "]";
    }
}

#多層配置
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 ?#冒號和數字之間有一個空格，沒有否則獲取失敗，pwd前面有縮進兩個字符