bugfix：目录订阅收到更新事件时，sql字段update_time为空导致的报错

lishuyuan

2023-11-02 8bd2f47c9a92ffcf5ae43fae965eaefd4748e263

bugfix：目录订阅收到更新事件时，sql字段update_time为空导致的报错

 src/main/java/com/genersoft/iot/vmp/service/impl/DeviceChannelServiceImpl.java

@@ -243,6 +243,10 @@

    @Override
    public void batchUpdateChannel(List<DeviceChannel> channels) {
        String now = DateUtil.getNow();
        for (DeviceChannel channel : channels) {
            channel.setUpdateTime(now);
        }
        channelMapper.batchUpdate(channels);
        for (DeviceChannel channel : channels) {
            if (channel.getParentId() != null) {