springboot 单例实现

主要了解两个问题,工具类中的配置文件读取,和单例的实现

package com.b2q.web_push.util;

import io.goeasy.GoEasy;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

@Component
public class GoEasyUtil {

    private static String regionHost; //服务商网址
    private static String appkey ;//官网appkey

    @Value("{regionHost}")
    public void setregionHost(String regionHost){
        GoEasyUtil.regionHost = regionHost;
    }
    public static String getregionHost() {
        return regionHost;
    }

    @Value("{appkey}")
    public void setappkey(String appkey){
        GoEasyUtil.appkey = appkey;
    }
    public static String getappkey() {
        return appkey;
    }
    private static class GoEasyUtil1
    {
        public final static GoEasy instance = new GoEasy(regionHost,appkey);
    }

    public static GoEasy getGoEasy()
    {
        return GoEasyUtil1.instance;
    }

}

//spring boot 单例注入

@Configuration
public class YunpianClientConfig {
@Value("${yunpian.apiKey}")
private String apiKey;
@Bean
YunpianClient getYunpianClient(){
return new YunpianClient(apiKey).init();
}
}