用正则表达式取出table中的所有行（支持嵌套table）
此是通过csdn询问得高人之手写的。
谢谢gzdiablo
表达式:
<tr[^>]*>(?:(?:\s|\S)*?(?=<table|</tr>)(?(<table)<table[^>]*>(?:\s|\S)*?(?:</table>|(?:(?:<table[^>]*>(?:\s|\S)*?</table>(?:\s|\S)*?)*?</table>))(?:\s|\S)*?|))*</tr>
一条表达式就可以获取你想要的
写得好辛苦
测试:
<table width="300" border="1" cellspacing="0" cellpadding="0">
<tr>
<td> </td>
<td><table width="100%" border="1" cellspacing="0" cellpadding="0">
<tr>
<td> </td>
</tr>
</table>
<table width="100%" border="1" cellspacing="0" cellpadding="0">
<tr>
<td> </td>
</tr>
</table></td>
<td> </td>
</tr>
<tr>
<td> </td>
<td> </td>
<td><table width="100%" border="1" cellspacing="0" cellpadding="0">
<tr>
<td> </td>
</tr>
</table></td>
</tr>
<tr>
<td><table width="100%" border="1" cellspacing="0" cellpadding="0">
<tr>
<td> </td>
</tr>
</table></td>
<td> </td>
<td> </td>
</tr>
</table>
-------------------获取3个match
============================================match1
<tr>
<td> </td>
<td><table width="100%" border="1" cellspacing="0" cellpadding="0">
<tr>
<td> </td>
</tr>
</table>
<table width="100%" border="1" cellspacing="0" cellpadding="0">
<tr>
<td> </td>
</tr>
</table></td>
<td> </td>
</tr>
==============================================match2
<tr>
<td> </td>
<td> </td>
<td><table width="100%" border="1" cellspacing="0" cellpadding="0">
<tr>
<td> </td>
</tr>
</table></td>
</tr>
==============================================match3
<tr>
<td><table width="100%" border="1" cellspacing="0" cellpadding="0">
<tr>
<td> </td>
</tr>
</table></td>
<td> </td>
<td> </td>
</tr>
