__VIEWSTATE、__EVENTVALIDATION、__EVENTTARGET 和scrapy & 的问题溅 [英] Problem with __VIEWSTATE, __EVENTVALIDATION, __EVENTTARGET and scrapy & splash

问题描述

我如何使用scrapy/splash处理__VIEWSTATE、__EVENTVALIDATION、__EVENTTARGET?

How do i handle __VIEWSTATE, __EVENTVALIDATION, __EVENTTARGET with scrapy/splash?

我试过

return FormRequest.from_response(response,
    [...]
    '__VIEWSTATE': response.css(
    'input#__VIEWSTATE::attr(value)').extract_first(),

但这不起作用.

推荐答案

您需要使用 dict 作为 formdata 关键字参数.

You'll need to use a dict as the formdata keyword arg.

(为了便于阅读，我还建议先提取到变量中)

(I'd also recommend extracting into variables first for readability)

def parse(self, response):
    vs = response.css('input#__VIEWSTATE::attr(value)').extract_first()
    ev = # another extraction
    et = # a third extraction
    return scrapy.FormRequest.from_response(
        response,
        formdata={'__VIEWSTATE': vs,
            '__EVENTVALIDATION': ev,
            '__EVENTTARGET': et },
        callback=self.your_callback
    )

见本文档 了解更多信息.

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