使用C＃selenium进行简单的抓取/数据收集 [英] Simple scraping / data collecting with C# selenium not working

问题描述

因此我尝试使用C＃与Selenium收集一些数据并且我对它很新，至少收集数据部分，我试图实现的是，当我按下按钮时收集一些数据并将其放入文本框中，简单，只有当我运行我的代码它不收集任何东西



我使用标签作为按钮

 私人  void  label11_Click（ object  sender，EventArgs e）
 {
  var  getTopFive = 新 FirefoxDriver（）; 
 getTopFive.Navigate（）。GoToUrl（  http://www.rottentomatoes.com/top/bestofrt / top_100_action__adventure_movies /）; 
 
  foreach （ var  item  in  getTopFive.FindElements（By.TagName（  a）））
 
  //  这是我离开的地方 
 
 { 
 activeTextBox.Text =（item.GetAttribute（  class））; 
 
} 
 

我觉得我把它与FindElements& GetAttribute但我不确定



我尝试过：



我我们试过搞乱FindElements& GetAttribute但没有运气

解决方案

for（int i = 0; i< 5; ++ i）

{

activeTextBox.Text + = movies [i] .Text +\\\\ n;





}

我看了一下页面。有一些< a class =......> 主播。



那又怎样？你没有检索任何东西。典型的锚看起来像< a class =unstyled articleLink...> ，因此您将检索字符串unstyled articleLink。任何一点？ :-)



但你真的没有那么做。请注意，您将一个字符串分配给 activeTextBox.Text ...一次又一次...循环... :-)



每次丢弃先前的属性值，然后写入新的属性值。 :-)



询问做什么没有任何意义。除了应用一些基本思想之外没什么可以帮助。



顺便说一下，没有必要使用任何第三方软件来完成这么简单的任务。您甚至不需要真正的HTML浏览器，因为它可以通过原始文本搜索完成，并且可以使用 HttpWebRequest 类轻松获取HTML字符串，甚至更简单，基本 HttpClient ...所有人都需要快速查看文档，然后关注它。



-SA

So im trying to collect some data with Selenium using C# and I am fairly new to it, atleast the collecting data part, what im trying to achieve is, when I press a button is collects some data and puts it in a textbox, simple as that, the only thing is when I run my code it doesnt collect anything

im using a label as a button

private void label11_Click(object sender, EventArgs e)
{
    var getTopFive = new FirefoxDriver();
    getTopFive.Navigate().GoToUrl("http://www.rottentomatoes.com/top/bestofrt/top_100_action__adventure_movies/");

    foreach (var item in getTopFive.FindElements(By.TagName("a")))

        //this is where I left off

    {
        activeTextBox.Text = (item.GetAttribute("class"));

    }

I think I messed it with the FindElements & GetAttribute but im not sure

What I have tried:

I've tried messing with the FindElements & GetAttribute but no luck

解决方案

for (int i = 0; i < 5; ++i)
{
activeTextBox.Text += movies[i].Text + "\r\n";


}

I looked at the page. There is a number of <a class="…" … > anchors.

So what? You are not retrieving anything. A typical anchor looks like <a class="unstyled articleLink" … >, so you would "retrieve" the string "unstyled articleLink". Any point? :-)

But you don't really do even that. Note that you assign a string to activeTextBox.Text… again and again… in a loop… :-)

Each time, the previous property value is discarded, and then new one is written. :-)

Asking "what to do" would not make any sense. Nothing except applying some elementary thinking can help.

By the way, there is no a serious need to use any 3rd-party software for such a simple task. You don't even need a real HTML browser, as it can be done with primitive text search, and the HTML string can be easily obtained with HttpWebRequest class, even simpler, with rudimentary HttpClient… All one needs is quick look at the documentation, and following it.

—SA

这篇关于使用C＃selenium进行简单的抓取/数据收集的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！