export with sheet_name

lib/tallty_import_export/export.rb

@@ -61,15 +61,17 @@ module TalltyImportExport
     end
 
     def export_workbook workbook, records
-        # excel导出样式
-        alignment = { vertical: :center, horizontal: :center }
-        border    = { color: '969696', style: :thin }
-        title1 = workbook.styles.add_style(alignment: alignment, border: border, sz: 16, b: true)
-        title2 = workbook.styles.add_style(alignment: alignment, border: border, bg_color: "2a5caa",  sz: 16, fg_color: "fffffb")
-        title3 = workbook.styles.add_style(alignment: alignment.merge(wrap_text: true), border: border, sz: 14)
-        headers = export_headers
-
-      workbook.add_worksheet do |sheet|
+      # excel导出样式
+      alignment = { vertical: :center, horizontal: :center }
+      border    = { color: '969696', style: :thin }
+      title1 = workbook.styles.add_style(alignment: alignment, border: border, sz: 16, b: true)
+      title2 = workbook.styles.add_style(alignment: alignment, border: border, bg_color: "2a5caa",  sz: 16, fg_color: "fffffb")
+      title3 = workbook.styles.add_style(alignment: alignment.merge(wrap_text: true), border: border, sz: 14)
+      headers = export_headers
+
+      sheet_name = respond_to?(:sheet_name) ? sheet_name : nil
+
+      workbook.add_worksheet(name: sheet_name) do |sheet|
         if respond_to?(:first_header)
           row_index = Axlsx.col_ref(headers.size - 1)
           sheet.merge_cells("A1:#{row_index}1")