enhance(report):导出用户抄表模板完成，提取公共生成器类型。

service/report.go

@@ -342,3 +342,20 @@ func (_ReportService) ProgressReportWillDilutedFee(report model.Report) (err err
 	_, err = global.DBConn.ID(report.Id).Cols("step_state").Update(report)
 	return
 }
+
+func (_ReportService) RetreiveParkEndUserMeterType(reportId string) (int, error) {
+	var types = make([]int, 0)
+	err := global.DBConn.
+		Table("park").Alias("p").
+		Join("INNER", []string{"report", "r"}, "r.park_id=p.id").
+		Where(builder.Eq{"r.id": reportId}).
+		Select("p.meter_04kv_type").
+		Find(&types)
+	if err != nil {
+		return -1, err
+	}
+	if len(types) == 0 {
+		return -1, nil
+	}
+	return types[0], nil
+}