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如何使用Python处理警报?_Python_Selenium_Selenium Webdriver_Phantomjs_Alert - Fatal编程技术网

如何使用Python处理警报?

如何使用Python处理警报?,python,selenium,selenium-webdriver,phantomjs,alert,Python,Selenium,Selenium Webdriver,Phantomjs,Alert,我喜欢用Python处理警报。我喜欢做的是: 打开url 提交表单或单击某些链接 检查新页面中是否出现警报 我用Javascript和PhantomJS实现了这一点,但我甚至可以用Python实现 以下是javascript代码: 文件test.js: var webPage = require('webpage'); var page = webPage.create(); var url = 'http://localhost:8001/index.html' page.onCons

我喜欢用Python处理警报。我喜欢做的是:

  • 打开url
  • 提交表单或单击某些链接
  • 检查新页面中是否出现警报
我用
Javascript
PhantomJS
实现了这一点,但我甚至可以用Python实现

以下是javascript代码:

文件test.js:

var webPage = require('webpage');
var page = webPage.create();

var url = 'http://localhost:8001/index.html'

page.onConsoleMessage = function (msg) {
    console.log(msg);
}    
page.open(url, function (status) {                
    page.evaluate(function () {
        document.getElementById('myButton').click()       
    });        
    page.onConsoleMessage = function (msg) {
        console.log(msg);
    }    
    page.onAlert = function (msg) {
        console.log('ALERT: ' + msg);
    };    
    setTimeout(function () {
        page.evaluate(function () {
            console.log(document.documentElement.innerHTML)
        });
        phantom.exit();
    }, 1000);
});
文件index.html

<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
    <title></title>
    <meta charset="utf-8" />
</head>
<body>
    <form>
        <input id="username" name="username" />
        <button id="myButton" type="button" value="Page2">Go to Page2</button>
    </form>
</body>
</html>

<script>
    document.getElementById("myButton").onclick = function () {
        location.href = "page2.html";
    };
</script>
现在,如何使用Python检查page2.html上是否出现警报?首先打开index.html页面,然后打开page2.html页面。 我才刚开始,所以任何建议都将不胜感激

p、 美国。 我还测试了webdriver.Firefox(),但速度非常慢。 我还读到这个问题:

但它不起作用(下面是与前面相同的脚本加上答案中建议的解决方案)

我得到一个错误:

“selenium.common.exceptions.WebDriverException:消息:无效 命令方法..”


PhantomJS使用GhostDriver实现WebDriver Wire协议,这就是它在Selenium中作为无头浏览器的工作方式

不幸的是,GhostDriver目前不支持警报。尽管看起来他们希望帮助实现这些功能:

您可以切换到PhantomJS的javascript版本,或者在Selenium中使用Firefox驱动程序

from selenium import webdriver
from selenium.common.exceptions import NoAlertPresentException

if __name__ == '__main__':
    # Switch to this driver and switch_to_alert will fail.
    # driver = webdriver.PhantomJS('<Path to Phantom>')
    driver = webdriver.Firefox()
    driver.set_window_size(1400, 1000)
    driver.get('http://localhost:8001/page2.html')

    try:
        driver.switch_to.alert.accept()
        print('Alarm! ALARM!')
    except NoAlertPresentException:
        print('*crickets*')
从selenium导入webdriver
从selenium.common.exceptions导入NoAlertPresentException
如果uuuu name uuuuuu='\uuuuuuu main\uuuuuuu':
#切换到此驱动程序和切换到警报将失败。
#driver=webdriver.PhantomJS(“”)
driver=webdriver.Firefox()
驱动程序。设置窗口大小(1400,1000)
司机,上车http://localhost:8001/page2.html')
尝试:
driver.switch_to.alert.accept()
打印('Alarm!Alarm!')
除NoAlertPresentException外:
打印(“*蟋蟀*”)

嗨!谢谢你的回答。我试图运行你的解决方案,但它不起作用。它打开一个空白页,什么也没发生。我遗漏了什么吗?脚本使用Python 3.5解释器运行,这就是您使用的吗?我建议将“main”下的代码和import语句复制并粘贴到您自己的脚本中。如果运行正常,它应该会打开一个firefox窗口指向您的URL,并将两条消息中的一条打印到控制台。我切换到Python3.5,但结果是一样的。我也采纳了你的建议。我使用的是selenium v.2.53.6,当所有其他操作都失败时,调试:)打开python控制台并逐行执行。(跳过if name=='main':行)。我认为这是Python没有看到webdriver或webdriver无法连接到URL的问题。脚本真正做的就是打开URL,尝试切换到警报,然后打印到控制台
import requests
from test import BasicTest
from selenium import webdriver
from bs4 import BeautifulSoup   

url = 'http://localhost:8001/index.html'    

def main():
    #browser = webdriver.Firefox()
    browser = webdriver.PhantomJS()
    browser.get(url)
    html_source = browser.page_source
    #browser.quit()    
    soup = BeautifulSoup(html_source, "html.parser")
    soup.prettify()    
    request = requests.get('http://localhost:8001/page2.html')
    print request.text    
    #Handle Alert    
if __name__ == "__main__":
    main();
.....    
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium.common.exceptions import TimeoutException

....

def main():
    .....
    #Handle Alert
    try:
        WebDriverWait(browser, 3).until(EC.alert_is_present(),
                                        'Timed out waiting for PA creation ' +
                                        'confirmation popup to appear.')

        alert = browser.switch_to.alert()
        alert.accept()
        print "alert accepted"
    except TimeoutException:
        print "no alert"

if __name__ == "__main__":
    main();
from selenium import webdriver
from selenium.common.exceptions import NoAlertPresentException

if __name__ == '__main__':
    # Switch to this driver and switch_to_alert will fail.
    # driver = webdriver.PhantomJS('<Path to Phantom>')
    driver = webdriver.Firefox()
    driver.set_window_size(1400, 1000)
    driver.get('http://localhost:8001/page2.html')

    try:
        driver.switch_to.alert.accept()
        print('Alarm! ALARM!')
    except NoAlertPresentException:
        print('*crickets*')