模拟登录 - php CURL模拟登陆正方教务系统

代码如下

<code>$cookie_file    =    tempnam('./temp','cookie');
$login_url        =    'http://211.64.47.129/default_ysdx.aspx';
$post_fields    =    '__VIEWSTATE=dDw1MjQ2ODMxNzY7Oz7xlHJHd0KfeVRA2p7BXNto118wbQ==&TextBox1=学号&TextBox2=密码';

$ch = curl_init($login_url);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $post_fields);
curl_setopt($ch, CURLOPT_COOKIEJAR, $cookie_file);

curl_exec($ch);
curl_close($ch);


$url='http://211.64.47.129/xs_main.aspx?xh=学号';
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 0);
curl_setopt($ch, CURLOPT_COOKIEFILE, $cookie_file);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);

$contents = curl_exec($ch);
preg_match("/<li>  (.*)/",$contents,$arr);
echo $arr[1];
curl_close($ch);</li></code>

但是最后却回到了登录的界面，小白求大神解答

回复内容：

代码如下

<code>$cookie_file    =    tempnam('./temp','cookie');
$login_url        =    'http://211.64.47.129/default_ysdx.aspx';
$post_fields    =    '__VIEWSTATE=dDw1MjQ2ODMxNzY7Oz7xlHJHd0KfeVRA2p7BXNto118wbQ==&TextBox1=学号&TextBox2=密码';

$ch = curl_init($login_url);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $post_fields);
curl_setopt($ch, CURLOPT_COOKIEJAR, $cookie_file);

curl_exec($ch);
curl_close($ch);


$url='http://211.64.47.129/xs_main.aspx?xh=学号';
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 0);
curl_setopt($ch, CURLOPT_COOKIEFILE, $cookie_file);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);

$contents = curl_exec($ch);
preg_match("/<li>  (.*)/",$contents,$arr);
echo $arr[1];
curl_close($ch);</li></code>

但是最后却回到了登录的界面，小白求大神解答

根据楼主的要求, 配合我自己写的 HttpClient 的类, 编写的代码如下, 但因为没有测试账号, 所以测试时使用的账号和密码为 test, 返回的结果是登陆失败, 楼主只需要修改代码里的账号和密码, 应该就可以了.
HTTP 请求过程中的 Cookie 由 HttpClient/CURL 自动处理.

楼主发的代码应该是没问题的, 感觉应该是没有提交 RadioButtonList1 和 Button1 这两个数据.
还有那个__VIEWSTATE 虽然看起来是固定的, 但为了保险期间, 还是应该从页面中获取到之后, 再提交登陆.

附代码:

<code><?php class HttpClient{
    private $ch;

    function __construct($cookie_jar){
        $this->ch = curl_init();
        curl_setopt($this->ch, CURLOPT_USERAGENT, 'Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; Trident/4.0; QQDownload 685; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET4.0C; .NET4.0E)');//UA
        curl_setopt($this->ch, CURLOPT_TIMEOUT, 40);
        curl_setopt($this->ch, CURLOPT_FOLLOWLOCATION, TRUE);
        curl_setopt($this->ch, CURLOPT_AUTOREFERER, true);
        curl_setopt($this->ch, CURLOPT_RETURNTRANSFER, TRUE);
        curl_setopt($this->ch, CURLOPT_COOKIEJAR, $cookie_jar);
        curl_setopt($this->ch, CURLOPT_COOKIEFILE, $cookie_jar);
    }

    function __destruct(){
        curl_close($this->ch);
    }

    final public function setReferer($ref=''){
        if($ref != ''){
            curl_setopt($this->ch, CURLOPT_REFERER, $ref);
        }
    }

    final public function Get($url, $header=false, $nobody=false){
        curl_setopt($this->ch, CURLOPT_POST, false);
        curl_setopt($this->ch, CURLOPT_URL, $url);
        curl_setopt($this->ch, CURLOPT_HEADER, $header);
        curl_setopt($this->ch, CURLOPT_NOBODY, $nobody);
        return curl_exec($this->ch);
    }

    final public function Post($url, $data=array(), $header=false, $nobody=false){
        curl_setopt($this->ch, CURLOPT_URL, $url);
        curl_setopt($this->ch, CURLOPT_HEADER, $header);
        curl_setopt($this->ch, CURLOPT_NOBODY, $nobody);
        curl_setopt($this->ch, CURLOPT_POST, true);
        curl_setopt($this->ch, CURLOPT_POSTFIELDS, http_build_query($data));
        return curl_exec($this->ch);
    }
}


const Login_URL = 'http://211.64.47.129/default_ysdx.aspx';

$http = new HttpClient(tempnam('./temp','cookie'));


$html = $http->Get(Login_URL);//先请求登陆页面, 获取 __VIEWSTATE

preg_match('/name="__VIEWSTATE" value="(.+?)"/', $html, $vs);

if(count($vs) !== 2){
    echo '获取viewstate失败';
    exit();
}

//构造登陆时的数据
$data = array(
    '__VIEWSTATE'=>$vs[1],//__VIEWSTATE
    'TextBox1'=>'username',//修改此处的用户
    'TextBox2'=>'password',//和密码
    'RadioButtonList1'=>'学生',//以及身份类型
    'Button1'=>'  登录  '
);

$html = $http->Post(Login_URL, $data);

preg_match('/language=\'javascript\'>alert\(\'(.+?)\'\);/', $html, $err);

//检测是否出错, 如果有出错, 则显示错误信息, 然后退出
if(count($err) === 2){
    echo $err[1];
    exit();
}




$sn = '123123';//学号

$html = $http->Get('http://211.64.47.129/xs_main.aspx?xh='. $sn);

preg_match('/<li>\s*(.*)/', $html, $result);

var_dump($result);

</li></code>

https://github.com/lndj/Lcrawl/tree/dev

一只优雅的正方教务系统爬虫。