伴随微信的红火，微信公众平台成为许多开发者的下一个目标。笔者本身对于这种新鲜事物没有如此多的吸引力。但是最近有朋友帮忙开发微信公众平台中一个成绩查询的功能。于是便在空余时间研究了一番。
主要的实现步骤是，通过PHP的CURL技术模拟登陆目标网站，通过登陆的用户，获取到用户的成绩信息，使用正则表达式对数据进行抓取和存储，使用HTML技术对数据进行重新弄排版。
微信公众平台的功能就是通过浏览的目的来实现成绩查询。整体的技术实现就在于PHP的CURL技术。下面就随便找了一个文件，获取成绩。具体代码如下。
<HTML>
<HEAD><TITLE>请您登录</TITLE>
<script language="JavaScript">
function Judge()
{
var WebUserNO=document.all["WebUserNO"].value;
if(WebUserNO=="")
{alert("登录用户不能为空！");
document.all["WebUserNO"] .focus();
return false;
} }
</script>
<META http-equiv=Content-Type content="text/html; charset=gb2312">
<STYLE type=text/css>TD {
FONT-SIZE: 12px
}
p1 {
FONT-SIZE: 12px
}
INPUT {
FONT-SIZE: 12px
}
p2 {
FONT-SIZE: 12px; LINE-HEIGHT: 14pt
}
p3 {
FONT-SIZE: 14px
}
p4 {
FONT-SIZE: 14px; LINE-HEIGHT: 14pt
}
p5 {
FONT-SIZE: 16px
}
p6 {
FONT-SIZE: 14px; LINE-HEIGHT: 180%
}
p7 {
FONT-SIZE: 12px; COLOR: #136792; LINE-HEIGHT: 160%
}
BIG {
FONT-SIZE: 18px
}
A:link {
COLOR: #0000ff
}
A:visited {
COLOR: #0000ff
}
A:hover {
COLOR: #ff0000
}
hand {
CURSOR: hand; BACKGROUND-COLOR: rgb(208,207,192)
}
</STYLE>
<!--style end-->
<META content="MSHTML 6.00.2600.0" name=GENERATOR></HEAD>
<BODY bgColor=#ffffff topMargin=7 marginheight="0" marginwidth="25">
<form name="LoginForm" method="post" action="qing.php">
<TABLE cellSpacing=0 cellPadding=0 width="100%" border=0>
<TBODY>
<TR>
<TD bgColor=#e6e6e6 height=20></TD>
<TD align=right bgColor=#e6e6e6> </TD>
</TR></TBODY></TABLE><BR>
<TABLE cellSpacing=0 cellPadding=1 width=492 align=center border=0>
<TBODY>
<TR>
<TD>
<TABLE borderColor=#c1eaff cellSpacing=0 cellPadding=20 width=474
align=center border=1>
<TBODY>
<TR>
<TD><TABLE width=283 height="100"
border=0 align=center cellPadding=0 cellSpacing=0>
<tr>
<td width="50" rowspan="4"> </td>
<td align="left">
</td>
</tr>
<tr>
<td height="22" align="left">用户名:
<input name="WebUserNO" type="text" id="WebUserNO" size="12"></td>
</tr>
<tr>
<td height="22" align="left">密 码:
<input name="Password" type="password" id="Password" size="12"></td>
</tr>
<tr>
<td height="22" align="left" valign="middle"><p>附加码:
<input name="Agnomen" type="text" id="Agnomen" size="12">
</p>
<p><A href="User_JSP/FuJiaMa.htm" target="_blank" ><img src="http://218.61.108.163/ACTIONVALIDATERANDOMPICTURE.APPPROCESS" width="60" height="20" alt="验证码说明" border="0"></a></p></td>
</tr>
<tr align="center">
<td colspan="2"><input type="image" border="0" name="submit" src="http://218.61.108.163/User_JSP/images/Logon.gif" width="37" height="18" onClick="javascript:return Judge();"> </td>
</tr>
<tr>
<td colspan="2"><div align="center"><input name="applicant" type="hidden" value="ACTIONQUERYSTUDENTSCORE"></div></td>
</tr>
</TABLE>
<br>
</TD>
</TR>
</TABLE></TD></TR></TBODY></TABLE>
</form>
<BR>
<BR>
</BODY></HTML>
qing.php
<?php
$cookie_file = tempnam('./temp','cookie');
$login_url = 'http://218.61.108.163/ACTIONQUERYSTUDENTSCORE.APPPROCESS'; $post_fields = 'WebUserNO=stuid&Password=passwd&Agnomen=code&applicant=ACTIONQUERYGRADUATESCHOOLREPORTBYSELF'; $ch = curl_init($login_url);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_COOKIEJAR, $cookie_file);
curl_setopt($ch, CURLOPT_POSTFIELDS, $post_fields);
curl_exec($ch);
curl_close($ch); $url='http://218.61.108.163/ACTIONQUERYGRADUATESCHOOLREPORTBYSELF.APPPROCESS';
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 0);
curl_setopt($ch, CURLOPT_COOKIEFILE, $cookie_file);
$contents = curl_exec($ch); //正则表达式提取数据。
$match="|(<=<td>).*(?=</td>)|";
preg_match_all($match,$contents,$b);
$abc = $b[0];
$abs = $b[1];
$abd = $b[1];
echo $abc;
echo $abs;
echo $abd;
curl_close($ch);
?>
获取到成绩的界面