[英]How to get the raw JSON response of a HTTP request from `driver.page_source` in Selenium webdriver Firefox
如果我浏览到https://httpbin.org/headers我希望得到以下 JSON 响应：
{
"headers": {
"Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8",
"Accept-Encoding": "gzip, deflate, br",
"Accept-Language": "en-US,en;q=0.5",
"Connection": "close",
"Host": "httpbin.org",
"Upgrade-Insecure-Requests": "1",
"User-Agent": "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:64.0) Gecko/20100101 Firefox/64.0"
}
}
但是，如果我使用硒
from selenium import webdriver
from selenium.webdriver.firefox.options import Options
options = Options()
options.headless = True
driver = webdriver.Firefox(options=options)
url = 'https://httpbin.org/headers'
driver.get(url)
print(driver.page_source)
driver.close()
我得到
<html platform="linux" class="theme-light" dir="ltr"><head><meta http-equiv="Content-Security-Policy" content="default-src 'none' ; script-src resource:; "><link rel="stylesheet" type="text/css" href="resource://devtools-client-jsonview/css/main.css"><script type="text/javascript" charset="utf-8" async="" data-requirecontext="_" data-requiremodule="viewer-config" src="resource://devtools-client-jsonview/viewer-config.js"></script><script type="text/javascript" charset="utf-8" async="" data-requirecontext="_" data-requiremodule="json-viewer" src="resource://devtools-client-jsonview/json-viewer.js"></script></head><body><div id="content"><div id="json">{
"headers": {
"Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8",
"Accept-Encoding": "gzip, deflate, br",
"Accept-Language": "en-US,en;q=0.5",
"Connection": "close",
"Host": "httpbin.org",
"Upgrade-Insecure-Requests": "1",
"User-Agent": "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:64.0) Gecko/20100101 Firefox/64.0"
}
}
</div></div><script src="resource://devtools-client-jsonview/lib/require.js" data-main="resource://devtools-client-jsonview/viewer-config.js"></script></body></html>
HTML 标签从何而来？ 如何从driver.page_source获取 HTTP 请求的原始 JSON 响应？
在您的网址中使用“view-source:”参数
简单模式：
例子：
url = 'view-source:https://httpbin.org/headers'
driver.get(url)
content = driver.page_source
print(content)
输出：
'<html><head><meta name="viewport" content="width=device-width"><title>https://httpbin.org/headers</title><link rel="stylesheet" type="text/css" href="resource://content-accessible/viewsource.css"></head><body id="viewsource" class="highlight" style="-moz-tab-size: 4"><pre>{\n "headers": {\n "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8", \n "Accept-Encoding": "gzip, deflate, br", \n "Accept-Language": "en-US,en;q=0.5", \n "Host": "httpbin.org", \n "Upgrade-Insecure-Requests": "1", \n "User-Agent": "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:67.0) Gecko/20100101 Firefox/67.0"\n }\n}\n</pre></body></html>'
最佳模式：（对于 JSON）
例子：
url = 'view-source:https://httpbin.org/headers'
driver.get(url)
content = driver.page_source
content = driver.find_element_by_tag_name('pre').text
parsed_json = json.loads(content)
print(parsed_json)
输出：
{'headers': {'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
'Accept-Encoding': 'gzip, deflate, br',
'Accept-Language': 'en-US,en;q=0.5',
'Host': 'httpbin.org',
'Upgrade-Insecure-Requests': '1',
'User-Agent': 'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:67.0) Gecko/20100101 Firefox/67.0'}}
除了原始 JSON 响应之外， driver.page_source还包含 HTML 以在浏览器中“漂亮地打印”响应。 如果您使用 Firefox DOM 和 Style Inspector 在浏览器中查看 JSON 响应的来源，您将获得相同的结果。
要获取原始 JSON 响应，您可以像往常一样导航 HTML 元素：
print(driver.find_element_by_xpath("//div[@id='json']").text)
这篇文章帮助我解决了 firefox 的问题： https : //blog.francium.tech/firefox-selenium-disable-json-formatting-cfaf466fd20f
我已将此首选项添加到我的驱动程序工厂：
from selenium.webdriver.firefox.options import Options as FirefoxOptions
@staticmethod
def get_firefox_options(headless):
options = FirefoxOptions()
options.set_preference('devtools.jsonview.enabled', False)
if headless:
options.headless = True
return options
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