在机械化中执行LoadControl XHR请求

问题描述 投票:0回答:1

我有一个带有Mechanize的Python脚本,可以浏览外部网站。该网站显然是用ASP.NET编写的,并且正在使用动态控件。我正在尝试模拟XHR以加载控件(通常是通过单击<button>来触发),但是每当我执行XHR时,ASP服务器都会返回500错误。我匹配了通常发送的POST请求的有效负载。

基本上,我正在这样做:

browser = mechanize.Browser()

browser.open('https://external.site/page.html')
# Here would be code to parse the content and extract the
# parameters for the XHR.

# Now we're making the XHR to update the control:
body = urllib.parse.urlencode({
    'request': {
                'control': 'Control_Name',
                'parameters': parameters,
            }
        })

request = mechanize.Request(
    url='https://external.site/server.asmx/LoadControl',
    data=body,
    method='POST',
)

response = browser.open(request)

[我这样做时,浏览器引发异常,因为它从服务器收到500。

这可能由于CORS检查或类似原因而无法实现,但是我感觉我根本没有正确地提出请求。 URL和数据有效负载与通过浏览器使用外部网站时通常发送的内容匹配。

是否有一种方法可以通过Mechanize发出LoadControl请求?

作为参考,我尝试浏览的网站上的按钮如下所示:

<button type="button"
     data-focus="{&quot;LoadParams&quot;:{&quot;ControlName&quot;: [lots of key/value pairs here here]"}}"
     data-action="GB.LoadControl">Button</button>

当我单击按钮时,XHR包含此有效载荷:

{
    "request": {
        [the data here matches data-focus from the button]
    }
}

和请求标头:

POST /MyService.asmx/LoadControl HTTP/1.1
Host: myservice.com
Connection: keep-alive
Content-Length: 367
Accept: application/json, text/javascript, */*; q=0.01
X-Requested-With: XMLHttpRequest 
User-Agent: Mozilla/5.0 (X11; CrOS x86_64 12871.23.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.31 Safari/537.36 
Content-Type: application/json; charset=UTF-8 
Origin: https://myservice.com 
Sec-Fetch-Site: same-origin 
Sec-Fetch-Mode: cors 
Sec-Fetch-Dest: empty 
Referer: https://myservice.comService.aspx?AGU=1&[...] 
Accept-Encoding: gzip, deflate, br 
Accept-Language: en-US,en;q=0.9,de-DE;q=0.8,de;q=0.7 
Cookie: BIGipServerSD_Home=224813834.20480.0000; ASP.NET_SessionId=152i5tiwq1r2cbiuamxxxxxx; PVUE=00
python asp.net mechanize
1个回答
0
投票

发送到服务器的机械化请求中的Content-type headerContent-type

application/x-www-form-urlencoded中传递的Content-type参数中将application/json设置为headers

request
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