带有Selenium的Python：从文件系统拖放到WebDriver？ [英] Python with Selenium: Drag and Drop from file system to webdriver?

问题描述

我必须自动化一个Web应用程序，该应用程序包含一个拖放区域，用于从本地文件系统上载文件。我的测试环境是使用Python开发的。对于自动化测试，我使用了Selenium，但是一旦上传区域是div标签（没有输入标签-这样我就很容易），就不可能从文件系统中拖动文件。

I have to automate a web-application, which contains a drag and drop area for uploading files from the local file system. My test environment is developed using Python. For the automation tests I have used Selenium, but it is not possible to drag files from the file system, once the upload area is a div tag (No input tag - this way I know it would be easy).

我读了很多不同的文章，但目前没有一篇对我有用。需要特别强调的是，我对使用AutoIT并不感兴趣，仅对带有硒的本机python感兴趣。

I read a lot of different articles, but by the moment none worked for me. It's important to highlight that I'm not interested in using AutoIT, only native python with selenium.

我发现了硒：从文件系统拖放至webdriver？看起来真正有希望的是，但是我

I found this Selenium: Drag and Drop from file system to webdriver? what looks really promising, however I do not know to adapt to Python.

非常感谢！

推荐答案

这是通过脚本进行输入注入的技巧的python版本。

Here's the python version of the trick with input injection via script.

JS_DROP_FILE = """
    var target = arguments[0],
        offsetX = arguments[1],
        offsetY = arguments[2],
        document = target.ownerDocument || document,
        window = document.defaultView || window;

    var input = document.createElement('INPUT');
    input.type = 'file';
    input.onchange = function () {
      var rect = target.getBoundingClientRect(),
          x = rect.left + (offsetX || (rect.width >> 1)),
          y = rect.top + (offsetY || (rect.height >> 1)),
          dataTransfer = { files: this.files };

      ['dragenter', 'dragover', 'drop'].forEach(function (name) {
        var evt = document.createEvent('MouseEvent');
        evt.initMouseEvent(name, !0, !0, window, 0, 0, 0, x, y, !1, !1, !1, !1, 0, null);
        evt.dataTransfer = dataTransfer;
        target.dispatchEvent(evt);
      });

      setTimeout(function () { document.body.removeChild(input); }, 25);
    };
    document.body.appendChild(input);
    return input;
"""

def drag_and_drop_file(drop_target, path):
    driver = drop_target.parent
    file_input = driver.execute_script(JS_DROP_FILE, drop_target, 0, 0)
    file_input.send_keys(path)

由于 drop_target 传递了一些在

方法是使用Selenium的 execute_script 函数来模拟拖放事件来调用javascript。该代码的工作方式如下：

The approach is to invoke a javascript using selenium's execute_script function to emulate drag and drop events. The code works as following:

1. 硒调用javascript代码


2. javascript创建输入元素并将其附加到DOM


3. javascript将处理程序附加到输入上，以模拟当用户实际放下文件时发生的鼠标事件，即 dragenter ，拖放，拖放。


4. 硒使用文件路径更新输入。此时，将调用步骤2中的处理程序，它会模拟拖放事件。

1. selenium invokes javascript code
2. javascript creates input element and attaches it to DOM
3. javascript attaches a handler to the input which emulates mouse events that happens when user actually drops a file, namely dragenter, dragover, drop.
4. selenium updates the input with the path to the file. At this point the handler from step 2 is invoked and it emulates drag and drop events.

这篇关于带有Selenium的Python：从文件系统拖放到WebDriver？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！