diff --git a/src/main/java/com/chaozhanggui/system/cashierservice/service/TbPrintPCMachineService.java b/src/main/java/com/chaozhanggui/system/cashierservice/service/TbPrintPCMachineService.java
index f451227..6c2ebb9 100644
--- a/src/main/java/com/chaozhanggui/system/cashierservice/service/TbPrintPCMachineService.java
+++ b/src/main/java/com/chaozhanggui/system/cashierservice/service/TbPrintPCMachineService.java
@@ -11,6 +11,7 @@ import com.chaozhanggui.system.cashierservice.util.JSONUtil;
 import com.github.pagehelper.PageHelper;
 import com.github.pagehelper.PageInfo;
 import lombok.extern.slf4j.Slf4j;
+import org.apache.commons.collections.CollectionUtils;
 import org.apache.commons.lang3.StringUtils;
 import org.springframework.beans.BeanUtils;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -59,6 +60,7 @@ public class TbPrintPCMachineService {
      */
     public Result queryByPage(TbPrintPCMachine tbPrintMachine) {
         PageHelper.startPage(tbPrintMachine.getPage(), tbPrintMachine.getPageSize());
+        tbPrintMachine.setContentType("local");
         List<TbPrintPCMachine> tbPrintMachines = this.tbPrintMachineMapper.queryAll(tbPrintMachine);
         PageInfo pageInfo=new PageInfo(tbPrintMachines);
         return Result.success(CodeEnum.SUCCESS,pageInfo);
@@ -73,7 +75,11 @@ public class TbPrintPCMachineService {
     public Result insert(PrintMachineDto resources) {
         TbPrintPCMachine tbPrintMachine = new TbPrintPCMachine();
         tbPrintMachine.setCreatedAt(Instant.now().toEpochMilli());
+        tbPrintMachine.setContentType("local");
         if (resources.getConfig() != null){
+            if(CollectionUtils.isEmpty(resources.getConfig().getCategoryList())){
+                resources.getConfig().setCategoryList(null);
+            }
             tbPrintMachine.setConfig(JSONUtil.toJSONString(resources.getConfig(),true));
         }
         BeanUtils.copyProperties(resources,tbPrintMachine);