fix: nan empty string

yangfu
pkg/infrastructure/domainService/file_table_preview_data_table_service.go
--- a/pkg/infrastructure/domainService/file_table_preview_data_table_service.go
查看文件 @79d3e08
+++ b/pkg/infrastructure/domainService/file_table_preview_data_table_service.go
查看文件 @79d3e08
@@ -118,6 +118,9 @@ func (d *FilePreviewDto) Load(fileId int, m *domain.DataLoadDataTable, file *red
 		if s == "<NA>" {
 			return ""
 		}
+ 		if s == "nan" {
+ 			return ""
+ 		}
 		return s
 	}), true)
 	d.Data = domain.GripData(mapData, int64(m.Total))