接着昨天的,一个分析网页源代码提取股票数据的程序
主要的就是字符串处理:
private void AnsCode(string url)
{
string date="";
string open="";
string high="";
string low="";
string close="";
string transA="";
string transB="";
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string str=url;
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string s1="",s2="",s3="",s4="";
int pos1=0,pos2=0,pos3=0,pos4=0;
int flag=0;
while((pos1=str.IndexOf("<td align=middle>"))!=-1)
{
pos1+=17;
str=str.Remove(0,pos1);
pos2=str.IndexOf("</td>");
s1=str.Substring(0,pos2);
if(flag==0)
{
date=s1;
//MessageBox.Show(date);
flag++;
}
else if(flag==4)
{
close=s1;
flag++;
pos3=str.IndexOf("<td align=right>");
pos3+=16;
str=str.Remove(0,pos3);
pos4=str.IndexOf("</td>");
s1=str.Substring(0,pos4);
transA=s1;
flag++;
pos3=str.IndexOf("<td align=right>");
pos3+=16;
str=str.Remove(0,pos3);
pos4=str.IndexOf("</td>");
s1=str.Substring(0,pos4);
transB=s1;
flag++;
}
else if(flag==1)
{
open=s1;
flag++;
}
else if(flag==2)
{
high=s1;
flag++;
}
else if(flag==3)
{
low=s1;
flag++;
}
if(flag==7)
{
//处理close字符串
int t1=close.IndexOf("<b>");
t1+=3;
close=close.Remove(0,t1);
int t2=close.IndexOf("</b>");
close=close.Remove(t2,4);
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flag=0;
//数据在列表中显示
ListViewItem lv=new ListViewItem();
//MessageBox.Show(date);
lv.SubItems.Clear();
lv.SubItems[0].Text=date;
lv.SubItems.Add(open);
lv.SubItems.Add(high);
lv.SubItems.Add(low);
lv.SubItems.Add(close);
lv.SubItems.Add(transA);
lv.SubItems.Add(transB);
listView1.Items.Add(lv);
}
}
MessageBox.Show("采集完成");
}那个url是网页的源码
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