fix:null保存到数据库

src/main/java/com/iflytop/handacid/common/service/ReceiveRecordService.java

@@ -1,6 +1,7 @@
 package com.iflytop.handacid.common.service;
 
 import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
+import com.baomidou.mybatisplus.core.conditions.update.LambdaUpdateWrapper;
 import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
 import com.iflytop.handacid.app.core.state.ChannelState;
 import com.iflytop.handacid.app.core.state.DeviceState;
@@ -33,13 +34,14 @@ public class ReceiveRecordService extends ServiceImpl<ReceiveRecordMapper, Recei
         receiveRecord.setSolutionName(solution.getName());
         this.save(receiveRecord);
 
-        Channel channel = channelService.getOne(new LambdaQueryWrapper<>(new Channel()).eq(Channel::getCode, receiveRecord.getChannelCode()));
-        channel.setCurrentVolume(receiveRecord.getReceivedVolume());
-        channel.setReceivedVolume(receiveRecord.getReceivedVolume());
-        channel.setConcentration(receiveRecord.getConcentration());
-        channel.setSolutionId(receiveRecord.getSolutionId());
-        channel.setTargetVolume(null);
-        channelService.updateById(channel);
+        LambdaUpdateWrapper<Channel> uw = new LambdaUpdateWrapper<Channel>()
+                .eq(Channel::getCode, receiveRecord.getChannelCode())
+                .set(Channel::getCurrentVolume, receiveRecord.getReceivedVolume())
+                .set(Channel::getReceivedVolume, receiveRecord.getReceivedVolume())
+                .set(Channel::getConcentration, receiveRecord.getConcentration())
+                .set(Channel::getSolutionId, receiveRecord.getSolutionId())
+                .set(Channel::getTargetVolume, null);
+        channelService.update(uw);
 
         ChannelState channelState = deviceState.getChannelStateMap().get(receiveRecord.getChannelCode());
         channelState.setCurrentVolume(receiveRecord.getReceivedVolume());