Phantomjs | python 使用 PhantomJS 渲染带 JS 的页面 进行爬虫抓取 | Test Automation library
kandi X-RAY | Phantomjs Summary
kandi X-RAY | Phantomjs Summary
你当然要有Phantomjs，废话！（Linux下最好用supervisord守护，必须保持抓取的时候Phantomjs一直处于开启状态） 用项目路径下的phantomjs_fetcher.js启动：phantomjs phantomjs_fetcher.js [port] 安装tornado依赖（使用了tornado的httpclient模块）.
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QUESTION
- inside
I am new to Selenium, Python, and programming in general but I am trying to write a small web scraper. I have encountered a website that has multiple links but their HTML code is not available for me using
...ANSWER
Answered 2021-Jun-08 at 23:08When you visit the page in a browser, and log your network traffic, every time the page loads (or you press the Mehr Pressemitteilungen anzeigen button) an XHR (XmlHttpRequest) request is made to some kind of API(?) - the response of which is JSON, which also contains HTML. It's this HTML that contains the list-item elements you're looking for. You don't need selenium for this:
QUESTION
I am just trying to get deals items from this amazon URL :
when I open this link in browser and write the query in console, it works:
document.querySelectorAll('div[class*="DealItem-module__dealItem_"]')
but when I try to fetch this through this phantomjs script, it seems to always returning nothing:
ANSWER
Answered 2021-May-31 at 18:23According to the documentation on the evaluate method in PhantomJS
Note: The arguments and the return value to the evaluate function must be a simple primitive object. The rule of thumb: if it can be serialized via JSON, then it is fine.
Closures, functions, DOM nodes, etc. will not work!
Instead, you should perform your length calculation inside the evaluate, then return the simple primitive length.
QUESTION
Inertia is providing a very cool helper method, which is based on axios, I suggest, e.g.:
...ANSWER
Answered 2021-May-20 at 18:57As far as I am aware of; no, you cannot do multiple HTTP requests with Inertia like it's possible with axios. So, I would use axios to do that.
I interpret the docs as follows: Inertia works by intercepting clicks on the frontend, and making the visit by XHR. As such it is designed to do this one click at a time. The visit method also shows that it makes this visit by calling axios with one url.
Also, since you're requesting plain JSON, the Inertia's author recommends to use XHR directly when dealing with plain JSON, because "an Inertia request must receive an Inertia response" (source).
QUESTION
I'm trying to scrape this site but I get a part of HTML. I wanted to get token's price
it should be contained inside
...ANSWER
Answered 2021-Apr-25 at 08:39Try this:
QUESTION
The tutorial here describes how to set up Stormcrawler to run with phantomJS, but phantomJS doesn't seem capable of sourcing and executing outlinking javascript pages (e.g., javascript code that's linked to outside of the immediate page's context). Chromedriver appears to be able to handle this case, however. How can I set up Stormcrawler to run with chromedriver instead of phantomJS?
...ANSWER
Answered 2021-May-06 at 15:41The basic set of steps you need to follow are:
- Install latest versions of Chrome and Chromedriver (below based on the tutorial here):
QUESTION
This is my first time using stack overflow so apologies if I do this wrong.
I'm fairly new to coding in R and I'm trying to make a simple Shiny app using a TidyTuesday dataset. I wanted to make a map with points showing the different types of water systems ("water_tech") and radio buttons to choose which type of water system is plotted on the map. I got the app to load without an error message, however no matter which button is selected, all of the different types of water systems are plotted on the map, not just the one I selected (essentially, the buttons don't work). If anyone has any ideas about what could be causing this to happen I would greatly appreciate it!
Reproducible code:
...ANSWER
Answered 2021-May-06 at 07:47rwater() has no effect in this code:
QUESTION
Im trying to install Chocolatey into a docker windows container, on a Windows 10 Machine using a Windows Container and not linux containers. Im running the docker build command in the PowerShell console and every time it get to trying to install Chocolatey using the line: Set-ExecutionPolicy Bypass -Scope Process -Force; [System.Net.ServicePointManager]::SecurityProtocol = [System.Net.ServicePointManager]::SecurityProtocol -bor 3072; iex ((New-Object System.Net.WebClient).DownloadString('https://chocolatey.org/install.ps1'))
It comes back with:
...ANSWER
Answered 2021-Apr-28 at 15:38I managed to fix this frustrating problem today, here is what I did for when the next person has this issue, as Docker is not going to fix it any time soon.
What I did, is in the desktop app on Windows / Mac you can edit the Daemon file. Under Settings in the Docker App under Docker Engine, I added the line at the bottom of the file just above the last curly brace. "dns": [ "192.168.4.100", "8.8.8.8" ]
This then allows the Docker Containers all that you now build to use your host's DNS server. Technically if you can access: https://chocolatey.org/install.ps1 then you should be able to access the choco repository.
I have also built the image in https://github.com/jasric89/vsts-agent-docker/tree/master/windows/servercore/10.0.14393 and labeled it in the repo:
microsoft/windowsservercore:10.0.14393.1358
I then set: RUN choco feature enable --name allowGlobalConfirmation before my first Choco Install command, this enables choco to install all the files and not error.
With all that set my Docker File Ran and built the image. Well in my Test Env now testing in my prod env. :)
Links that helped me:
https://github.com/moby/moby/issues/24928 https://github.com/jasric89/vsts-agent-docker/blob/master/windows/servercore/10.0.14393/standard/VS2017/Dockerfile https://docs.chocolatey.org/en-us/troubleshooting https://github.com/moby/moby/issues/25537
QUESTION
I am trying to scrape hover text content from some plotly traces published on the web. I have not performed this type of scraping before and am trying to do this in R without selenium or phantomjs if possible... perhaps using V8? I was wondering if someone could point me in the right direction. Link to plots are below. Specifically looking for data in plots from Figure 21: Positivity rate for COVID-19 in Alberta by zone. Thanks!
https://www.alberta.ca/stats/covid-19-alberta-statistics.htm
...ANSWER
Answered 2021-Apr-26 at 17:04Using rvest and jsonlite the following code will get you the data you are looking for. The data for the plot.ly diagrams is stored in
QUESTION
i try to use this python code this but i dont know what wrong pls help
...ANSWER
Answered 2021-Apr-22 at 23:05Here is the problem:
QUESTION
I was trying to scrape the household links from this page :
https://www.sreality.cz/en/search/to-rent/apartments?page=2
For instance, for the first apartment I would like to obtain the link with:
However the website is quite heavy on javascript. By using requests.get() I only obtain an uninformative chunk of html code:
...ANSWER
Answered 2021-Apr-22 at 19:30First ask website, if they provide any API to get the desired information.
To deal with javascript during the scraping only request will not work. You should go Selenium only or for scrapy in combination of scrapy-selenium. These two allow loading of javascript during scraping.
Feel free to ask if you have any other question.
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