static静态变量使用@Value注入方式

@Component
public class CommunicationToICBC{
 
    private static String privateKey;
 
    @Value("${third.cash.sdk.private_key}")
    public void setPrivateKey(String privateKey) {
        CommunicationToICBC.privateKey = privateKey;
    }
 
    public static String getPrivateKey() {
        return privateKey;
    }
}