使用PhantomJS的webdriver ExecutePhantomJS过滤掉图像的C＃示例 [英] C# example of using PhantomJS webdriver ExecutePhantomJS to filter out images

问题描述

我期待能够有选择地打开和关闭特定的图像。我遇到下面的文章：

I am looking to be able to selectively turn on and off certain images. I've come across the following article:

的 PhantomJS如何跳过下载资源

我还发现这篇文章是使用python很相似：

I've also found this article which is very similar using python:

的硒通过PhantomJS / Python的驱动

我假设我可以通过 webdriver.ExecutePhantomJS（字符串脚本，params对象[]参数）。

我不知道是，如果我需要创建一些页面第一个对象通过硒PageFactory，然后调用这个函数呢？我怎么会再次将其关闭。如何做到这一点的例子是非常有益的。

What I don't know is if I need to create some page object first via the Selenium PageFactory and then call this function? How would I turn it off again. An example of how to do this would be very helpful.

推荐答案

我只是在寻找类似的东西...

I was just looking for something similar...

本，例如，会忽略所有网址以巴纽结尾的：

This, for example, will ignore all urls ending with ".png":

using (var driver = new PhantomJSDriver())
{
    const string phantomScript = "var page=this;page.onResourceRequested = function(requestData, request) { var reg =  /\\.png/gi; var isPng = reg.test(requestData['url']); console.log(isPng,requestData['url']); if (isPng){console.log('Aborting: ' + requestData['url']);request.abort();}}";
    var script = driver.ExecutePhantomJS(phantomScript);
    driver.Navigate().GoToUrl("https://www.google.com/");                
    driver.GetScreenshot().SaveAsFile("googlewithoutimage.png",ImageFormat.Png);
}   

注意，如果您正在寻找的页对象这个在ExecutePhantomJS范围内，也注意到我写的日志，以获得更好的了解所发生的事情的。

note that the 'page' object that you're looking for is 'this' in the ExecutePhantomJS scope, also note that I'm writing to the log to get a better understanding of what's happening.

这使您可以灵活地开启或关闭图像选择，当你需要的。

This gives you the flexibility to turn on or off images selectively, as you required.

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