正则表达式问题？？急，提取天气预报信息。

[hyzhx]

<table border='1' width='520' align='center' cellpadding='1' cellspacing='1'>
<tr bgcolor='#DEF3FF'><td width='36' rowspan='2' height='18' class='font'><div align='center'>时次</div></td>
<td width='60' rowspan='2' height='18' class='font'><div align='center'>气温</div><div align='center'>(℃)</div></td>
<td width='60' rowspan='2' height='18' class='font'><div align='center'>雨量</div><div align='center'>(mm)</div></td>
<td width='60' rowspan='2' height='18' class='font'><div align='center'>相对湿度</div><div align='center'>(%)</div></td>
<td width='60' rowspan='2' height='18' class='font'><div align='center'>气压</div><div align='center'>(Hpa)</div></td>
<td colspan='2' height='18' class='font'><div align='center'>2分钟平均风</div></td>
<td colspan='2' height='18' class='font'><div align='center'>极大风</div></td></tr>
<tr bgcolor='#DEF3FF'><td width='60' height='18' class='font'><div align='center'>风速</div><div align='center'>(m/s)</div></td>
<td width='60' height='18' class='font'><div align='center'>风向</div></td>
<td width='60' height='18' class='font'><div align='center'>风速</div><div align='center'>(m/s)</div></td>
<td width='60' height='18' class='font'><div align='center'>风向</div></td></tr>

<tr bgcolor='#EEF5E5'><td width='36' height='18' class='font'><div align='center'>10</div></td>
<td width='60' height='18' class='font'><div align='center'>20.0</div></td>
<td width='60' height='18' class='font'><div align='center'>0.0</div></td>
<td width='60' height='18' class='font'><div align='center'>60</div></td>
<td width='60' height='18' class='font'><div align='center'>1011.1</div></td>
<td width='60' height='18' class='font'><div align='center'>0.8</div></td>
<td width='60' height='18' class='font'><div align='center'>东</div></td>
<td width='60' height='18' class='font'><div align='center'>2.9</div></td>
<td width='60' height='18' class='font'><div align='center'>东北</div></td>
</tr>

<tr><td width='36' height='18' class='font'><div align='center'>09</div></td>
<td width='60' height='18' class='font'><div align='center'>18.0</div></td>
<td width='60' height='18' class='font'><div align='center'>0.0</div></td>
<td width='60' height='18' class='font'><div align='center'>67</div></td>
<td width='60' height='18' class='font'><div align='center'>1010.9</div></td>
<td width='60' height='18' class='font'><div align='center'>1.2</div></td>
<td width='60' height='18' class='font'><div align='center'>北东北</div></td>
<td width='60' height='18' class='font'><div align='center'>2.0</div></td>
<td width='60' height='18' class='font'><div align='center'>北东北</div></td>
</tr>

<tr bgcolor='#EEF5E5'><td width='36' height='18' class='font'><div align='center'>08</div></td>
<td width='60' height='18' class='font'><div align='center'>16.0</div></td>
<td width='60' height='18' class='font'><div align='center'>0.0</div></td>
<td width='60' height='18' class='font'><div align='center'>76</div></td>
<td width='60' height='18' class='font'><div align='center'>1010.9</div></td>
<td width='60' height='18' class='font'><div align='center'>1.0</div></td>
<td width='60' height='18' class='font'><div align='center'>北东北</div></td>
<td width='60' height='18' class='font'><div align='center'>2.0</div></td>
<td width='60' height='18' class='font'><div align='center'>东东北</div></td>
</tr>

<tr><td width='36' height='18' class='font'><div align='center'>07</div></td>
<td width='60' height='18' class='font'><div align='center'>14.0</div></td>
<td width='60' height='18' class='font'><div align='center'>0.0</div></td>
<td width='60' height='18' class='font'><div align='center'>82</div></td>
<td width='60' height='18' class='font'><div align='center'>1010.4</div></td>
<td width='60' height='18' class='font'><div align='center'>1.3</div></td>
<td width='60' height='18' class='font'><div align='center'>南东南</div></td>
<td width='60' height='18' class='font'><div align='center'>2.0</div></td>
<td width='60' height='18' class='font'><div align='center'>东北</div></td>
</tr>

<tr bgcolor='#EEF5E5'><td width='36' height='18' class='font'><div align='center'>06</div></td>
<td width='60' height='18' class='font'><div align='center'>13.0</div></td>
<td width='60' height='18' class='font'><div align='center'>0.0</div></td>
<td width='60' height='18' class='font'><div align='center'>84</div></td>
<td width='60' height='18' class='font'><div align='center'>1009.7</div></td>
<td width='60' height='18' class='font'><div align='center'>1.4</div></td>
<td width='60' height='18' class='font'><div align='center'>东</div></td>
<td width='60' height='18' class='font'><div align='center'>2.1</div></td>
<td width='60' height='18' class='font'><div align='center'>北东北</div></td>
</tr>
</table>

[believefym]

不会问问题

[hyzhx]

[Quote=引用 1 楼 believefym 的回复:]
不会问问题
[/Quote]
就是提取这个网页上的天气预报信息http://cdc.bjmb.gov.cn/gongzhong.asp。有什么办法？

[eswn]

楼主看下html parse吧，网上实例多多，正则表达式不是处理大段文本的。
分数拿来。

[梅小西Echo]

import java.net.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.io.*;
public class c
{
  public static void main(String[] args)
   {
    try 
    {
        String ur="http://cdc.bjmb.gov.cn/gongzhong.asp"; 
        URL MyURL=new URL(ur);
        String str;
        URLConnection con=MyURL.openConnection();
        InputStreamReader ins=new InputStreamReader(con.getInputStream(),"gbk");
        BufferedReader in=new  BufferedReader(ins);
        StringBuffer sb = new StringBuffer();
        while ((str=in.readLine())!=null)
        {  
        	sb.append(str);
        }
            in.close();

     
            Pattern p = Pattern.compile("<td\\s*width='60'\\s*height='18'\\s*class='font'>\\s*<div\\s*align='center'>(.*?)</div></td>");
    		Matcher m  = p.matcher(sb.toString());
    		m.matches();
			while(m.find())
				{		
				  System.out.println(" "+m.group(1));
			    }
     }
    catch (MalformedURLException mfURLe) {
      System.out.println("MalformedURLException: " + mfURLe);
    } 
    catch (IOException ioe) {
      System.out.println("IOException: " + ioe);
	  
    }
  }
}

[hyzhx]

ls,你这样处理，会过滤到一些杂质信息。不过还是很感谢你。
这些问题，我都已经解决。
因为代码过长，不好贴出来，详细情况你可以看我的博客http://blog.csdn.net/hyzhx/archive/2008/04/17/2299017.aspx