问题：如何方便抓取http://www.gtfund.com/webapps/etf/etf_gzsh.jsp?fundcode=511010中所有历史数据？

解决：查看源文件，发现html节点，文件下载中有href信息。So：

%%http://www.gtfund.com/webapps/etf/etf_gzsh.jsp?fundcode=511010

gRefresh=0;%是否网上提取最新数据
if gRefresh==1   
    %利用wind的matlab接口，查询511010的历史交易日期
    w=windmatlab;
    [w_tdays_data,w_tdays_codes,w_tdays_fields,w_tdays_times,w_tdays_errorid,w_tdays_reqid]=w.tdays('2013-03-25',datestr(today,'yyyy-mm-dd'));
    dayLength=length(w_tdays_times);
   
    %组合历史交易日的申购赎回清单之url
    urlStartStr=repmat(['http://www.gtfund.com/upload/etf/pcf511010/2013/511010'],dayLength,1);
    urlInterStr=datestr(w_tdays_times,'mmdd');
    urlEndStr=repmat(['.etf'],dayLength,1);
    urlStr= strcat( urlStartStr,urlInterStr,urlEndStr);
   
    %利用正则表达式，查询所需信息。此处html格式比较统一且简单，所以不求甚解地这样处理，不当之处，将来有能力再改吧
    tPre1Data=zeros(10,4);
    tData=zeros(10,2);
    for i=1:dayLength
        try
            str=urlread(urlStr(i,:))           
        catch
            fprintf('urlread读取%s上的数据失败！',urlStr(i,:))
            continue
        end
       
        [mat,tok]=regexpi(str,'TradingDay=(\d{8})','match','tokens')
        temp1=tok{1};
        tData(i,1)=str2num(temp1{1});   %TradingDay

        temp=tok{2};
        tPre1Data(i,1)=str2num(temp{1});   %PreTradingDay

        [mat,tok]=regexpi(str,'CashComponent=(\-?\d+.\d{2})','match','tokens')
        temp1=tok{1};
        tData(i,2)=str2num(temp1{1});   %EstimateCashComponent

        temp=tok{2};
        tPre1Data(i,2)=str2num(temp{1});   �shComponent

        [mat,tok]=regexpi(str,'NAVperCU=(\d+.\d{2})','match','tokens')
        temp=tok{1};
        tPre1Data(i,3)=str2num(temp{1});   %NAVperCU

        [mat,tok]=regexpi(str,'NAV=(\d+.\d{4})','match','tokens')
        temp=tok{1};
        tPre1Data(i,4)=str2num(temp{1});   %NAV               
    end

    tData=sortrows(tData,-1)
    tPre1Data=sortrows(tPre1Data,-1)
    save dayData.mat tData
    save preDayData.mat tPre1Data
else
    load dayData.mat
    load preDayData.mat
end

hf=figure('units','normalize','menubar','none','position',[0.2 0.2 .6 .4])
ht1=uitable('parent',hf,'units','normalize','position',[0 .01 .3 .98],'data',tData,'columnname',{'日期','预估现金部分(单位:元)'})
ht2=uitable('parent',hf,'units','normalize','position',[0.301 .01 .65 .98],'data',tPre1Data,'columnname',{'日期','现金差额(单位:元)','最小申购赎回单位资产净值(单位:元)','基金份额净值(单位:元)'})

参考文献：

Matlab 正则表达式零基础起步教程：http://blog.csdn.net/mathsoperator/article/details/7232334