Java spring boot注解@RequestParam

javascript是弱类型语言，一个函数参数可以接收不同类型的变量作为它的该参数。
如：noticeEstateSales的week参数可以是空，数字类型（4），字符串（‘登记’， ‘4’）类型。
这在强类型语言（如：Object c,java）中是无法理解的。
当然弱类型语言好处也有，就是因为它不太讲究，健壮性很高，不用crash。缺点是：当出现问题时，不容易定位。如：一个地方调用是正常的，另一个地方调用就有可能是异常的。
下面是一个例子函数：

erp_notice_saler.noticeEstateSales = async function (week, estate_id) {
    logger.debug('noticeEstateSales timer: start');
    let wordsMap = {
        '1': '快',
        '2': '上',
        '3': '上',
        '4': '快来',
        '登记': '您',
    };
    let words = wordsMap[week];
}

传递不同的参数调用：

        const date = new Date();
        const week = date.getDay();
        erp_notice_saler.noticeEstateSales(week);
        erp_notice_saler.noticeEstateSales(4);
        erp_notice_saler.noticeEstateSales(5);
        erp_notice_saler.noticeEstateSales('4');

打印日志：

[2024-05-13T12:00:25.151] [DEBUG] app - noticeEstateSales timer: week: 1
[2024-05-13T12:00:25.151] [DEBUG] app - noticeEstateSales timer: wordsMap[week] 快来更新预计开盘信息，能同时获得积分和展位，先到先审先得！~ week: 1
[2024-05-13T12:00:25.151] [DEBUG] app - noticeEstateSales timer: start
[2024-05-13T12:00:25.151] [DEBUG] app - noticeEstateSales timer: week: 4
[2024-05-13T12:00:25.151] [DEBUG] app - noticeEstateSales timer: wordsMap[week] 快来 week: 4
[2024-05-13T12:00:25.151] [DEBUG] app - noticeEstateSales timer: start
[2024-05-13T12:00:25.151] [DEBUG] app - noticeEstateSales timer: week: 5
[2024-05-13T12:00:25.151] [DEBUG] app - noticeEstateSales timer: wordsMap[week] undefined week: 5
[2024-05-13T12:00:25.151] [DEBUG] app - noticeEstateSales timer: start
[2024-05-13T12:00:25.151] [DEBUG] app - noticeEstateSales timer: week: 4
[2024-05-13T12:00:25.151] [DEBUG] app - noticeEstateSales timer: wordsMap[week] 快来 week: 4