Pyk*_*ler 371
在python中使用PhantomJS的最简单方法是通过Selenium.最简单的安装方法是
npm -g install phantomjs-prebuilt安装后,您可以使用幻像,如下所示:
from selenium import webdriver
driver = webdriver.PhantomJS() # or add to your PATH
driver.set_window_size(1024, 768) # optional
driver.get('https://google.com/')
driver.save_screenshot('screen.png') # save a screenshot to disk
sbtn = driver.find_element_by_css_selector('button.gbqfba')
sbtn.click()
如果未正确设置系统路径环境变量,则需要将确切路径指定为参数webdriver.PhantomJS().替换这个:
driver = webdriver.PhantomJS() # or add to your PATH
......以下内容:
driver = webdriver.PhantomJS(executable_path='/usr/local/lib/node_modules/phantomjs/lib/phantom/bin/phantomjs')
参考文献:
Mar*_*ers 80
PhantomJS最近完全放弃了Python支持.但是,PhantomJS现在嵌入了Ghost Driver.
自那以后,一个新项目加紧填补空白:ghost.py.您可能想要使用它:
from ghost import Ghost
ghost = Ghost()
with ghost.start() as session:
page, extra_resources = ghost.open("http://jeanphi.me")
assert page.http_status==200 and 'jeanphix' in ghost.content
Pan*_*aj 40
现在,由于GhostDriver与PhantomJS捆绑在一起,因此通过Selenium使用它变得更加方便.
我按照Pykler的建议尝试了PhantomJS的Node安装,但实际上我发现它比PhantomJS的独立安装慢.我想独立安装没有提前提供这些功能,但从v1.9开始,它就是这样做的.
现在你可以像这样使用
import selenium.webdriver
driver = selenium.webdriver.PhantomJS()
driver.get('http://google.com')
# do some processing
driver.quit()
以下是我使用PhantomJS和Django测试javascript的方法:
mobile/test_no_js_errors.js:
var page = require('webpage').create(),
system = require('system'),
url = system.args[1],
status_code;
page.onError = function (msg, trace) {
console.log(msg);
trace.forEach(function(item) {
console.log(' ', item.file, ':', item.line);
});
};
page.onResourceReceived = function(resource) {
if (resource.url == url) {
status_code = resource.status;
}
};
page.open(url, function (status) {
if (status == "fail" || status_code != 200) {
console.log("Error: " + status_code + " for url: " + url);
phantom.exit(1);
}
phantom.exit(0);
});
mobile/tests.py:
import subprocess
from django.test import LiveServerTestCase
class MobileTest(LiveServerTestCase):
def test_mobile_js(self):
args = ["phantomjs", "mobile/test_no_js_errors.js", self.live_server_url]
result = subprocess.check_output(args)
self.assertEqual(result, "") # No result means no error
运行测试:
manage.py test mobile
@Pykler的答案很棒,但Node要求已经过时了.该答案中的评论提出了更简单的答案,我在这里为了节省其他时间而放在这里:
安装PhantomJS
正如@ Vivin-Paliath指出的那样,它是一个独立的项目,而不是Node的一部分.
苹果电脑:
brew install phantomjs
Ubuntu的:
sudo apt-get install phantomjs
等等
设置一个virtualenv(如果你还没有):
virtualenv mypy # doesn't have to be "mypy". Can be anything.
. mypy/bin/activate
如果您的机器同时具有Python 2和3,则可能需要运行virtualenv-3.6 mypy或类似.
安装硒:
pip install selenium
尝试一个简单的测试,就像借用文档一样:
from selenium import webdriver
from selenium.webdriver.common.keys import Keys
driver = webdriver.PhantomJS()
driver.get("http://www.python.org")
assert "Python" in driver.title
elem = driver.find_element_by_name("q")
elem.clear()
elem.send_keys("pycon")
elem.send_keys(Keys.RETURN)
assert "No results found." not in driver.page_source
driver.close()
小智 5
这就是我所做的,python3.3.我正在处理庞大的站点列表,因此在超时失败对于完成整个列表的工作至关重要.
command = "phantomjs --ignore-ssl-errors=true "+<your js file for phantom>
process = subprocess.Popen(command, shell=True, stdout=subprocess.PIPE)
# make sure phantomjs has time to download/process the page
# but if we get nothing after 30 sec, just move on
try:
output, errors = process.communicate(timeout=30)
except Exception as e:
print("\t\tException: %s" % e)
process.kill()
# output will be weird, decode to utf-8 to save heartache
phantom_output = ''
for out_line in output.splitlines():
phantom_output += out_line.decode('utf-8')
如果使用Anaconda，请安装：
conda install PhantomJS
在您的脚本中：
from selenium import webdriver
driver=webdriver.PhantomJS()
完美地工作。