java网页导出excel为什么在兼容模式下时而好使时而不好使，极速模式没问题

java网页导出excel为什么在兼容模式下时而好使时而不好使，极速模式没问题。求大神指点。

下面是导出代码和excel的JSP文件开头。

  /**
     * 导出Excel
     * @return
     * @throws Exception
     */
    public String getListExcel() throws Exception
    {
        this.init();
        chuKuList = dao.getList(startTime,endTime,shouHuoDanWei,cheHao,pinMing);
        //页面核算

        for(int i =0;i<chuKuList.size();i++){
         ChuKu chuKu=chuKuList.get(i);
            heji1=heji1+chuKu.getDanJia();
            he1 = TypeChange.stringToDouble(df.format(heji1));
            heji2=heji2+chuKu.getJinE();
            he2 = TypeChange.stringToDouble(df.format(heji2));
            heji3=heji3+chuKu.getZhuangCheFei();
            he3 = TypeChange.stringToDouble(df.format(heji3));
            heji4=heji4+chuKu.getYunFei();
            he4 = TypeChange.stringToDouble(df.format(heji4));
            heji5=heji5+chuKu.getZongJinE();
            he5 = TypeChange.stringToDouble(df.format(heji5));
            heji6=heji6+chuKu.getMaoZhong();
            he6 = TypeChange.stringToDouble(df.format(heji6));
            heji7=heji7+chuKu.getPiZhong();
            he7 = TypeChange.stringToDouble(df.format(heji7));
            heji8=heji8+chuKu.getJingZhong();
            he8 = TypeChange.stringToDouble(df.format(heji8));
            heji9=heji9+chuKu.getDanJianZhongLiang();
            he9 = TypeChange.stringToDouble(df.format(heji9));
        }
         return SUCCESS;
    }

 <%@ page contentType="application/vnd.ms-excel; charset=UTF-8" %>
<%@ page import="com.sysgrrj.common.TypeChange" %>
<%@  taglib prefix="s" uri="/struts-tags" %>
<% String f = "出库信息" + TypeChange.GetDate() + ".xls";
    response.addHeader("Content-Disposition", "filename=" + new String(f.getBytes(), "iso8859-1")); %>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>

        <style type="text/css">
            body, p, td {
            font-family: '宋体';
            font-size: 12px;
            }
        </style>