Spring日志处理——logger占位符

public static void main(String[] args) {
        List<String> actualHpList = new LinkedList<>();
        actualHpList.add("1");
        actualHpList.add("2");
        actualHpList.add("3");
        actualHpList.add("4");

        logger.info("actualHpList is {}", actualHpList.toString());
    }

打印结果：16:37:48.199 [main] INFO com.canaan.minemanage.BaseTest - actualHpList is [1, 2, 3, 4]