infra: 修正 查询实体列表方法，传入的ID集合为空时，会导致异常的问题

yudao-module-infra/yudao-module-infra-biz/src/main/resources/codegen/java/service/serviceImpl.vm

@@ -15,6 +15,9 @@ import ${basePackage}.module.${table.moduleName}.dal.mysql.${table.businessName}
 import static ${ServiceExceptionUtilClassName}.exception;
 import static ${basePackage}.module.${table.moduleName}.enums.ErrorCodeConstants.*;
 
+import cn.hutool.core.collection.CollUtil;
+import cn.hutool.core.collection.ListUtil;
+
 /**
  * ${table.classComment} Service 实现类
  *
@@ -61,6 +64,9 @@ public class ${table.className}ServiceImpl implements ${table.className}Service
 
     @Override
     public ${table.className}DO get${simpleClassName}(${primaryColumn.javaType} id) {
+        if (CollUtil.isEmpty(ids)) {
+            return ListUtil.empty();
+        }
         return ${classNameVar}Mapper.selectById(id);
     }