采用UTF-8格式导出Excel存在乱码解决方法

目前我们开发Excel导出时，多数使用ExportToExcelCommon类导出Excel，通常情况下不会产生乱码，但在某些时候还是会产生乱码。解决方法很简单，只需要在ExportToExcel()方法中多加一句代码即可，ExportToExcel()方法如下：



string fileName;

            HttpContext.Current.Response.Buffer = true;

            HttpContext.Current.Response.ClearContent();

            HttpContext.Current.Response.ClearHeaders();

            HttpContext.Current.Response.Clear();

            HttpContext.Current.Response.Charset = "UTF-8";

            HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.UTF8;

            HttpContext.Current.Response.HeaderEncoding = System.Text.Encoding.UTF8;



            fileName = string.Format("AOMS Export-{0:yyyy-MM-dd_HH_mm_ss}.xls", DateTime.Now);

            HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename=" + fileName);

            //设置输出文件类型为excel文件。

            HttpContext.Current.Response.ContentType = "application/ms-excel";

            StringWriter tw = new System.IO.StringWriter();

            HtmlTextWriter hw = new System.Web.UI.HtmlTextWriter(tw);

            gvw.RenderControl(hw);

            if (!string.IsNullOrEmpty(title))

            {

                HttpContext.Current.Response.Write("<b><center><font size=3 face=Verdana color=#0000FF>" + title + "</font></center></b>");

            }

            HttpContext.Current.Response.Write("<meta http-equiv=\"content-type\" content=\"application/ms-excel; charset=UTF-8\"/>");

            HttpContext.Current.Response.Write(tw.ToString());

            HttpContext.Current.Response.Flush();

            HttpContext.Current.Response.Close();

            HttpContext.Current.Response.End();



            gvw.Dispose();

            tw.Dispose();

            hw.Dispose();



            gvw = null;

            tw = null;

         hw = null;

注意上述代码的重点在于这一句：

HttpContext.Current.Response.Write("<meta http-equiv=\"content-type\" content=\"application/ms-excel; charset=UTF-8\"/>");

在导出方法中加入这一句代码，即可防止采用UTF-8格式导出Excel时出现乱码。