java 通过header导出csv文件乱码

try{
               
                context.response().putHeader("Content-type", "text/csv; charset=UTF-8")
                        .putHeader("Content-Disposition", "attachment;filename="+csv_name+".csv;charset=utf-8")
                        .putHeader("write","\ufeff")
                        .end(string);

            }catch (Exception e){
                e.printStackTrace();
            }