Question

我正在编写一个谷歌应用程序脚本，该脚本应该登录到网站，然后抓取该网站并执行不同的操作。

该脚本成功验证了网站并完成了几个get方法，但是当它尝试在PostSelect下拉框中执行Post时，我收到了500个响应代码。

我的脚本如下：

    function getRaceData(browser) {
      var eId = "72370";
      var selectNbr = "17";
      var url = "http://tnetwork.trakus.com/tnet/t_Recap.aspx?EventID=" + eId;
      var options = {
               "method": "get",
                // Set the cookies so that we appear logged-in
                "headers": {
                            "Cookie": browser.cookie
                           },
                "followRedirects" : false
              }

     var response = UrlFetchApp.fetch(url, options);
     var html = response.getContentText();
     var code = response.getResponseCode();
     browser.html = html;
     Utilities.sleep(1000);
     var url = "http://tnetwork.trakus.com/tnet/t_Recap.aspx";
     var payload = {"EventIDHidden" : eId, "PostSelect" : selectNbr};
     var header = {"Cookie" : browser.cookie};
     var options = {"method" : "post","headers" : header,"payload":payload,"followRedirects" : false};         

    Logger.log(UrlFetchApp.getRequest(url, options));

 **var response = UrlFetchApp.fetch(url, options);**      //This line causes 500 response code.
     var html = response.getContentText();
     var code = response.getResponseCode();
     Logger.log(html);
    }

以下是我收到的错误消息：

Request failed for http://tnetwork.trakus.com/tnet/t_Recap.aspx returned code 500. Truncated server response: <html>
 <head>
 <title>Runtime Error</title>
 <style>
 body {font-family:"Verdana";font-weight:normal;font-size: .7em;... (use muteHttpExceptions option to examine full response) (line 190, file "PostTest")

更新：以下是我可以使用Google Chrome开发者工具网络选择检查的请求标题：

POST /tnet/t_Recap.aspx HTTP/1.1
Host: tnetwork.trakus.com
Connection: keep-alive
Content-Length: 23079
Cache-Control: max-age=0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Origin: http://tnetwork.trakus.com
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.76 Safari/537.36
Content-Type: application/x-www-form-urlencoded
Referer: http://tnetwork.trakus.com/tnet/t_Recap.aspx?EventID=72370
Accept-Encoding: gzip, deflate
Accept-Language: en-US,en;q=0.8
Cookie: ASP.NET_SessionId=ayek3u55dsapvxe2t5kio0a3; __utma=260442568.815817400.1426544670.1426555405.1426631681.3; __utmc=260442568; __utmz=260442568.1426544670.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none); userCredentials=username=MyUserName; .ASPXAUTH=D637CD472308F766FA8D267B85D8018028FC7981748D6B3EE9DC43166998E1F7F5A9B2A676CB1FD67560B86F40A633C4DDAAE6B13BBD0B07728E00E00977F271ABD5CC74D9AD88405CB7DD04F43F5EDDEF84EAAA14E5A3A638A744B0B76EA2FFEF2434A393E5FD699416FEA1A4EF0488671D82E4; __utma=190106350.902310224.1426544678.1426631684.1426643061.5; __utmb=190106350.3.10.1426643061; __utmc=190106350; __utmz=190106350.1426544678.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none)

这也是我在记录我的UrlFetchApp.getRequest（url，options）函数时得到的结果。

{headers{Cookie=ASP.NET_SessionId=zv2o2o55tgl2ctbse52vwln1;userCredentials=username=MyUserName;.ASPXAUTH=9980822DFE22641E55F3545CAEAFA748A39AC05A69F74A67BC656078C192769BB74A0B6F000241B36A670362019F5D14DCD1A6FD9E43718B5BC8AD89E9037DBEA1CE2A012AFFFC704D35C71EB82DAC18C644F0EBA34992604ABF2680DE97098C8BE3CB0BAEADD51C65E2EB0C8851C9E151337EA4, X-Forwarded-For=71.168.117.91}, useIntranet=false, followRedirects=false, payload=PostSelect=17&EventIDHidden=72370, method=post, validateHttpsCertificates=true, contentType=application/x-www-form-urlencoded, url=http://tnetwork.trakus.com/tnet/t_Recap.aspx}

我相信我的语法是正确的，并且我已经能够使用所有先前的get语句和Login Post成功传递cookie，所以我不确定为什么这个帖子失败了。如果有人有任何想法或遇到类似的事情，我会很感激您的意见

更新：我更仔细地查看了页面来源，并希望分享以下内容：

该页面有一个非常大的表单，似乎包含隐藏的输入，而不是我的Post语句中的隐藏输入（见下文）。另外，Select语句有一个onChange =“UpdatePostView（）。

UpdatePostView（）非常简单：

function UpdatePostView()
    {
        document.TChartForm.submit();
    }

其他输入包括

    <form name="TChartForm" method="post" action="t_Recap.aspx" id="TChartForm">
<input type="hidden" name="__VIEWSTATE" id="__VIEWSTATE" value="eBDduN+CtRzqAG6KZjuiZQhrTRokT2cqgaabq7fy3oSZaeE+O83K0QTLMCessWWC27snsJrG607bicynkgi9j1+4a++Gpz8+S5CeD9hhjzEEH8NuJUOtgPDOV5QFkqNrGVX4g+1YehwD+A5V7K5o+j5zva1cABIEhbHoxAqKrETpZgNVDjpZWTc+Hl4NaG1aTGpARvzUTgU23CvtxwYrIAH2CVuDHeqMTo0B9aOB73e4liFQtMnj/64ETSf2eGvbgmBLKaPHDxDrRCjMRLBinWRn94lLF6Cf3ZUVoQTMU4IgpQ==" />

        <input type="hidden" name="__VIEWSTATEGENERATOR" id="__VIEWSTATEGENERATOR" value="696C68DE" />
        <input type="hidden" name="__EVENTVALIDATION" id="__EVENTVALIDATION"    value="pv3ODePltFyNx0vx4zFN/4siIO4psfHIMLofolP8T27GF4kko1Ol7wQaPQ0nuAtGCoANyMCeHmV0ecBuv/CGuv4YF2jZSIQmPtNFmSpDEh/EJvyVxljXY2d+gv8=" />     
                                <input type="hidden" name="EventIDHidden" id="EventIDHidden" value="72370" />
                                <input type="hidden" id="SessionUser" value="MyUserName" />
                                <input type="hidden" id="SessionAccessStr" value="MyUserName" />
                                <div id="DisplayArea"><table class="headLinks" align="center" width="97%" cellpaddiong="0" cellspacing="0"><tr><td width="50%"><div align="left"><a style="white-space:nowrap;" href="t_RaceDay.aspx?VenueID=24&amp;Type=TBRED&amp;Date=03/01/2015">&laquo;&laquo;&laquo;More Aqueduct Races on 03/01/2015</a></div><br /><div align="left"><a href="previous.html" onClick="history.back();return false;">&laquo;&laquo;&laquo;Previous Page
            </a></div><p /></td><td valign="top"><div align="right"><b>
              T-Net Member: myTnetMemberName </b></div></td></tr></table><table align="center" class="topThreeContainer" cellpadding="2" cellspacing="0"><tr align="center" class="topThreeTitle"><td style="white-space:nowrap">Track</td><td style="white-space:nowrap">Official Results</td><td style="white-space:nowrap">Trakus Times</td></tr><tr><td><img src="images/TrackLogos/24.gif" /></td><td valign="top"><table cellpadding="2"><tr class="topThreeHead"><td><div style="width:40px;">Win</div></td><td><div style="width:40px;">Place</div></td><td><div style="width:40px;">Show</div></td></tr><tr><td><img width="30" height="27" src="images/HorseRacingTiles/Trakus/3.gif" /></td><td><img width="30" height="27"  

additional form data omitted due to space constraints....

<select runat="server" autopostback="true" style="width:250px" id="PostSelect" onChange="UpdatePostView();" name="PostSelect"><option value="0">Race Summary</option><option value="2">1/16 Mile</option><option value="3">1/8 Mile</option><option value="4">3/16 Mile</option><option value="5">1/4 Mile (POC)</option><option value="6">5/16 Mile</option><option value="7">3/8 Mile</option><option value="8">7/16 Mile</option><option value="9">1/2 Mile (POC)</option><option value="10">9/16 Mile</option><option value="11">5/8 Mile</option><option value="12">11/16 Mile</option><option value="13">3/4 Mile (POC)</option><option value="14" selected="">13/16 Mile</option><option value="15">7/8 Mile (POC)</option><option value="16">15/16 Mile</option><option value="17">1 Mile (Finish)</option></select>

additional form data omitted due to space constraints....

 Race Notes: </div></td></tr><tr><td align="right" colspan="2"><div align="right" style="font-size:8px;font-weight:bold;">Updated 3/1/2015 6:29:10 PM GMT
</div></td></tr></table></div></form>

鉴于这些新信息，我还有几个问题：

我是否需要将其他隐藏的输入添加到我的有效负载中，或者它们是否嵌入到Html中，因此无论如何都要提交。
urlfecthapp命令是否会触发onchange事件，或者我是否必须执行一些特殊操作才能触发该事件。
ViewState，ViewStateGenerator和EventValidation的作用是什么。这些都存在于登录表单中，但我不需要将它们包含在有效负载中以便成功登录。

如果有人想尝试并亲自查看结果，这是我的完整脚本。

Full Script

再次感谢。

为什么我的urlfetchapp Post无法工作并抛出500响应代码

0 个答案: