package apijson.demo; import org.springframework.beans.factory.annotation.Value; import org.springframework.context.annotation.Configuration; @Configuration public class DataBaseConfig { private String primary; @Value("${spring.datasource.dynamic.primary}") public void setPrimary(String primary) { this.primary = primary; } public String getPrimary() { return primary; } public static DataBaseConfig getInstence() { return SpringContextUtils.getBean(DataBaseConfig.class); } }