webdriver | 易学教程

PhantomJS with Selenium: Message: 'phantomjs' executable needs to be in PATH

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问题 I having trouble installing PhantomJS to my project Following the suggestions from the similar question from so I defined the $PATH variable with executable path cd Users/zkid18/project/venv/venv_name/lib/python3.6/site-packages/phantomjs-2.1.1/bin export PATH=$PWD Then I try to create a driver with a virtual browser import from selenium import webdriver browser = webdriver.PhantomJS() On this step I got an error No such file or directory: 'phantomjs': 'phantomjs' What I am missing? 回答1: You

How to mouse hover a parent element and subsequently click on child element using Selenium and Action class

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问题 I wrote a test to hover mouse on an Element which has a link underneath it and to click the subElement. I keep getting NullPointerException. It had work previously and stopped working again. Actions mouseHover = new Actions(driver); mouseHover.moveToElement(ParentElement); mouseHover.moveToElement(subElement); mouseHover.click(subElement); 回答1: As per your code attempts you havn't invoked the perform() method for Mouse Hover . You need to induce WebDriverWait for the elements and can use the

拉钩爬虫

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#!/usr/bin/env python# -*- coding:utf-8 -*-import jsonimport reimport timeimport lxml.htmlfrom selenium import webdriverfrom selenium.webdriver.common.by import Byfrom selenium.webdriver.support.ui import WebDriverWaitfrom selenium.webdriver.support import expected_conditions as ECfrom redis_cache import RedisCacheclass LagouSpider(object): def __init__(self): # 调用webdriver.Chrome()启动浏览器 self.driver = webdriver.Chrome() self.url = 'https://www.lagou.com/jobs/list_python?labelWords=&fromSearch=true&suginput=' self.detail_url = None def run(self): # 获得url打开浏览器 self.driver.get(self.url) while

Selenium WebDriver的使用（一）

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Selenium WebDriver的相关介绍及资源下载：http://docs.seleniumhq.org/ 在2016年2月份Selenium WebDriver更新到了2.52.0版本，建议在使用旧版本的更新至该版本，在稳定性和性能上提高不少。 Selenium支持驱动众多的浏览器，包括PC、移动端及PhantomJS等。以在windows下的JAVA开发环境为例，下载http://selenium-release.storage.googleapis.com/2.52/selenium-java-2.52.0.zip，解压后添加到工程中。PC端建议使用Google Chrome和PhantomJS。PhantomJS可以理解为没有界面的Safari（QtWebkit作为渲染引擎，JS引擎是JavascriptCore）。要使Selenium能驱动Google Chrome，还需要根据你的系统环境下载chromedriver，下载地址：https://sites.google.com/a/chromium.org/chromedriver/downloads。在本文撰写的时候，chromedriver最新版本为2.21。需要注意的是，2.21版本支持Chrome的版本为v46-50，如果chromedriver和你使用的Chome版本不匹配，程序可能无法正常工作。

解决:selenium.common.exceptions.WebDriverException: Message: 'chromedriver' execu

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# http://chromedriver.storage.googleapis.com/index.html 在准备写个脚本去爬取网易云歌曲信息时。用selenium去戳。这里采用的是chrome浏览器，链接网页时报错：File “C:\Python37\lib\site-packages\selenium\webdriver\chrome\webdriver.py”, line 73, in init self.service.start() File “C:\Python37\lib\site-packages\selenium\webdriver\common\service.py”, line 83, in start os.path.basename(self.path), self.start_error_message) selenium.common.exceptions.WebDriverException: Message: ‘chromedriver’ executable needs to be in PATH. Please see https://sites.google.com/a/chromium.org/chromedriver/home 解决办法：安装与浏览器版本匹配的webdriver 1、打开谷歌浏览器，在地址栏输入 chrome:/

【python-selenium】python-selenium安装配置

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selenium 是一个web的自动化测试工具，不少学习功能自动化的同学开始首选selenium ，相因为它相比QTP有诸多有点： * 免费，也不用再为破解QTP而大伤脑筋 * 小巧，对于不同的语言它只是一个包而已，而QTP需要下载安装1个多G 的程序。 * 这也是最重要的一点，不管你以前更熟悉C、 java、ruby、python、或都是C# ，你都可以通过selenium完成自动化测试，而QTP只支持VBS * 支持多平台：windows、linux、MAC ，支持多浏览器：ie、ff、safari、opera、chrome * 支持分布式测试用例的执行，可以把测试用例分布到不同的测试机器的执行，相当于分发机的功能。关于selenium的基础知识与java平台的结合，我之前写过一个《菜鸟学习自动化测试》系列，最近学python，所以想尝试一下selenium的在python平台如何搭建；还好这方法的文章很容易，在此将搭建步骤整理分享。搭建平台windows 准备工具如下： ------------------------------------------------------------- 下载python https://www.python.org/ ----------------------------------------------------------

How does dot(.) in xpath to take multiple form in identifying an element and matching a text

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问题 I have the below dom structure: <h3 class="popover-title"> <div class="popup-title"> <div class="title-txt">Associated Elements &nbsp(5)</div> </div> </h3> I am trying to write an xpath which will identify the title "Associated Elements" under h3 tag. When my xpath is //div[contains(@class, popover)]//h3[contains(.,'Associated Elements')] the element is identified. However when my xpath is //div[contains(@class, popover)]//h3[contains(text(),'Associated Elements')] the element is not

How does dot(.) in xpath to take multiple form in identifying an element and matching a text

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Selenium - Python webdriver path error system can't find the path specified

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问题 Please help, whats wrong with the FF profile. I want to save a file from the website using Firefox and python webdriver from selenium import webdriver from selenium.webdriver.common.keys import Keys from selenium.webdriver.common.by import By from selenium.webdriver.support.ui import WebDriverWait from selenium.webdriver.support import expected_conditions as EC from selenium.webdriver.support.select import Select import os """from bs4 import BeautifulSoup""" fp = webdriver.FirefoxProfile() fp

python爬虫 --多线程【晋级版】--阻塞--队列--公共缓冲区

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阻塞 import time from selenium import webdriver from selenium . webdriver . support . wait import WebDriverWait from selenium . webdriver . support import expected_conditions as EC from selenium . webdriver . common . by import By import os import threading from queue import Queue class Tencent ( threading . Thread ) : def __init__ ( self , q , name ) : super ( ) . __init__ ( ) self . q = q self . name = name # self.page = page def save_to_html ( self , html_str , filename ) : dirname = os . path . dirname ( filename ) if not os . path . exists ( dirname ) : os . mkdir ( dirname ) with open (

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