使用Python登录到AJAX表单

Question

顺便说一句。。。此网站仅适用于Internet Explorer。。。。在

我试图为一个客户废弃一个网站，这样我就可以为他们自动化一个任务。基本上，它会抓取不同的报告，寻找周转时间，并通过电子邮件发送给客户。我的报废程序运行良好，问题是我用Mechanize登录网站，因为登录表单是使用AJAX的。我四处寻找解决办法，但似乎找不到我要找的东西。在

下面是HTML表单和（据我所知）处理它的AJAX。在

function TranLogin()
         {
            var url = 'login.aspx?isAjax=true&eventTarget=TranLogin';
            var postData = Form.serialize('Form1');
            ajaxRequest = new Ajax.Request(
            url,
            {
                method : 'post',
                postBody : postData,
                onComplete : TransLoginFinished,
                onFailure : reportError,
                onException : reportException
            });
         }
function TransLoginFinished(serverResponse)
         {
            if (requestFailed) return;
            xmlNodes =  serverResponse.responseXML;
            usrSite = "8000";
            usrCode = decodeXmlChar(xmlNodes.getElementsByTagName('UserCode')[0].text);
            if (xmlNodes.getElementsByTagName('LoginResult')[0].text == '-1'){
                alert(decodeXmlChar(xmlNodes.getElementsByTagName('FailMsg')[0].text));
                Form.enable('Form1');
                return;
            }
            if (xmlNodes.getElementsByTagName('LoginResult')[0].text == '20'){
                window.location.replace('initpasswd.aspx?usersite=' + usrSite + '&usercode=' + usrCode);
                return;
            }
            if (xmlNodes.getElementsByTagName('LoginResult')[0].text == '14'){
                window.location.replace('chgpasswd.aspx?type=chgpwd&usersite=' + usrSite + '&usercode=' + usrCode);
                return;
            }
            if (xmlNodes.getElementsByTagName('LoginResult')[0].text == '16'){
                window.location.replace('chgpasswd.aspx?type=pwdexpire&usersite=' + usrSite + '&usercode=' + usrCode);
                return;
            }
            if (xmlNodes.getElementsByTagName('LoginResult')[0].text == '0'){
                if (xmlNodes.getElementsByTagName('PwdExpireWarning')[0].text == 'true'){
                    var changePwdNow = window.confirm(decodeXmlChar(xmlNodes.getElementsByTagName('PwdExpireMsg')[0].text));
                    if (changePwdNow == true){
                        window.location.replace('chgpasswd.aspx?type=chgpwd&usersite=' + usrSite + '&usercode=' + usrCode);
                        return;
                    }
//                    var arg = { promptMsg :decodeXmlChar(xmlNodes.getElementsByTagName('PwdExpireMsg')[0].text), 
//                                buttons : [ { value : "Yes", rtnVal : 1 },
//                                            { value : "No", rtnVal : 0 }
//                                ] 
//                    };
//                    var rtn = window.showModalDialog('../Modules/ModalMessageBox.aspx',arg, "dialogHeight:140px;dialogWidth:500px; center:1;status:no;");
//                    if (rtn && rtn == 1){
//                      window.location.replace('chgpasswd.aspx?type=chgpwd&usersite=' + usrSite + '&usercode=' + usrCode);
//                      return;
//                    }

                }
                if (JTrim($('txtHospCode').value) == '')
                {
                    hospList = decodeXmlChar(xmlNodes.getElementsByTagName('HospList')[0].text).split('|');
                    if (hospList.length < 2)
                    {
                        selectedHospCode = hospList[0].split('-')[0];
                        TranSelectHosp(selectedHospCode);
                        return;
                    }
                    $('divHospList').style.display = 'block';
                for(i=0;i<hospList.length;i++)
                {
                    if (hospList[i] != '')
                    {
                        divHospCode = document.createElement("div");
                        divHospCode.className='divHospCode';
                        $('divHospListBG').appendChild(divHospCode);
                        lnkHospCode = document.createElement("a");
                        if (hospList[i].length <= 33)
                            lnkHospCode.innerText = hospList[i];
                        else
                            lnkHospCode.innerText = hospList[i].substr(0,30) + '...';
                        lnkHospCode.title = hospList[i];
                        lnkHospCode.className = 'lnkHospCode';
                        divHospCode.appendChild(lnkHospCode);
                        lnkHospCode.onmouseover = function(){this.style.color = '#000000';}
                        lnkHospCode.onmouseout = function(){this.style.color = '#6c6c6c';}
                        lnkHospCode.onclick = function(){TranSelectHosp(this.innerText.split('-')[0]);}
                        if (i > 7 && $('divHospListBG').style.overflow != 'auto')
                        {
                            $('divHospListBG').style.height = '198px';
                            $('divHospListBG').style.overflow = 'auto';
                        }
                    }
                }
                return;
            }
            else
            {
                TranSelectHosp(JTrim($('txtHospCode').value));
            }
        }
     }

^{pr2}$ 输入账户代码：

            <div class="divRight">
                <input name="txtHospCode" type="text" id="txtHospCode" class="inputClass" maxlength="4" />
            </div>
            <div class="divLeft">
                <span>Input User Code:</span>
            </div>
            <div class="divRight">
                <input name="txtUserCode" type="text" id="txtUserCode" class="inputClass" maxlength="6" />
            </div>
            <div class="divLeft">
                <span>Input Password:</span></div>
            <div class="divRight">
                <input name="txtPassword" type="password" id="txtPassword" class="inputClass" />
            </div>
            <div class="divLeft">
                <span>Login As:</span>
            </div>
            <div class="divRight">
                &nbsp;<input type="radio" name="rdLoginType" value="D" checked="checked" />Doctor&nbsp;&nbsp;
                <input type="radio" name="rdLoginType" value="T" />Other
            </div>
            <div class="divLeft">
            </div>
            <div class="divRight">
                <input class="buttonClass" id="btnOK" type="button" value="Enter" onclick="LoginIn();" />
                <input class="buttonClass" id="btnReset" type="button" value="Reset" onclick="ResetInput();" />
            </div>

到目前为止我的代码

import mechanize
import cookielib
from BeautifulSoup import BeautifulSoup
import html2text
import re

Instatiate Browser
br = mechanize.Browser()
Cookie Jar
cj = cookielib.LWPCookieJar()
br.set_cookiejar(cj)
Browser options
br.set_handle_equiv(True)
br.set_handle_gzip(True)
br.set_handle_redirect(True)
br.set_handle_referer(True)
br.set_handle_robots(False)
Follows refresh 0 but not hangs on refresh > 0
br.set_handle_refresh(mechanize._http.HTTPRefreshProcessor(), max_time=1)
User-Agent
br.addheaders = [('User-agent', 'Mozilla/4.0 (compatible; MSIE 7.0b; Windows NT 6.0)')]
def login_to_website(login_url, login_form_name, usr_form_name, pwd_form_name,acct_code_name, usr, pwd, acct_code):
    """ Logs user into website """
# Open the url of the login page
br.open(login_url)


# Select the login form name
br.select_form(login_form_name)

# Enter user's credentials into the form
br.form[acct_code_name] = acct_code
br.form[usr_form_name] = usr
br.form[pwd_form_name] = pwd
br.find_control(name='rdLoginType').value = ['T']

# Submit the form
print "Logging in as:", usr 
br.submit()

# print current url
print "We are now at:", br.geturl()

# print error
if br.geturl() == login_url:
    print "Login Failed"
else: print "Successfully logged in"
登录_到_网站（'https://www.website.com'，'Form1'，'txtUserCode'，'txtPassword'，'txtHospCode'，usr，pwd，acctCode）

Answer 1

据我所知，Mechanize不处理Javascript。所以你的选择是，按照我所尝试的大致顺序：

• 在浏览器中关闭Javascript，然后查看是否仍可以登录该站点。如果是这样，请尝试在该过程中使用mechanize。在
• 尝试弄清楚AJAX表单的效果是什么（服务器端和客户端），并尝试使用Python模拟它。如果你还没有找到它，像萤火虫这样的东西是非常宝贵的。在
• 使用允许Python控制真实浏览器的各种库之一。我从来没有这么做过，但我知道至少Firefox和IE都有包装