blocks|key|519484|text|Slanec的回答是正确的--+WebDriver没有这方面的原生功能。我在Windows中解决这个问题的方法是使用System.Windows.Forms.SendKeys对象：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|519485|++++SendKeys.SendWait("%5Ep");
++++System.Threading.Thread.Sleep(500);
++++SendKeys.SendWait("~");

++++//+give+it+a+minute+to+spool+onto+the+printer
++++System.Threading.Thread.Sleep(5000);|code-block|syntax|javascript|519486|实际上，我已经在一个循环中打印了一堆语句。就像一种护身符。|519487|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

Slanec's answer is correct - WebDriver doesn't have native capability for this. The way I solved this in Windows is with the System.Windows.Forms.SendKeys object:

<pre><code> SendKeys.SendWait("^p");
 System.Threading.Thread.Sleep(500);
 SendKeys.SendWait("~");

 // give it a minute to spool onto the printer
 System.Threading.Thread.Sleep(5000);
</code></pre>

I've actually got this in a loop printing off a bunch of statements. Works like a charm.

blocks|key|302802|text|在使用Selenium和Facebook+WebDriver时，我遇到了相同的问题，- the测试场景将停止运行，因为打印对话框阻止了与页面的任何交互。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|302803|我最终没有在test环境中打开打印对话框(例如使用Symfony和Twig)：|offset|length|style|CODE|302804|{#+Selenium+can't+interact+with+the+OS+native+print+dialog.+#}
{#+Therefore,+it's+disabled+in+the+test+environment.+#}
{%25+if+app.environment+!=+'test'+%25}
++++$(document).ready(function+()+{
++++++++var+orderShouldBePrinted+=+window.location.href.indexOf(
++++++++++++'print=true'
++++++++)+!==+-1;

++++++++if+(orderShouldBePrinted)+{
++++++++++++window.print();
++++++++}
++++});
{%25+endif+%25}|code-block|syntax|javascript|302805|这样做的好处是不会停止测试。但是，它不允许测试实际出现的print对话框。|302806|作为冒烟测试，我添加了$I->seeInCurrentUrl('print=true');+(因为这个URL参数会触发window.print())。|302807|entityMap^0|0|6|4|0|0|0|B|Y|1N|E|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@$D|U|E|V|F|G]]|9|@]|A|$]]|$1|H|3|I|5|J|7|W|8|@]|9|@]|A|$K|L]]|$1|M|3|N|5|6|7|X|8|@]|9|@]|A|$]]|$1|O|3|P|5|6|7|Y|8|@$D|Z|E|10|F|G]|$D|11|E|12|F|G]]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|13|8|@]|9|@]|A|$]]]|R|$]]

Using Selenium and Facebook WebDriver with Codeception, I had the same problem – the test scenario would stop running because the print dialog prevented any interaction with the page.

I ended up not opening the print dialog in the <code>test</code> environment (example using Symfony and Twig):

<pre><code>{# Selenium can't interact with the OS native print dialog. #}
{# Therefore, it's disabled in the test environment. #}
{% if app.environment != 'test' %}
 $(document).ready(function () {
 var orderShouldBePrinted = window.location.href.indexOf(
 'print=true'
 ) !== -1;

 if (orderShouldBePrinted) {
 window.print();
 }
 });
{% endif %}
</code></pre>

This has the advantage of not stopping the test. However, it doesn't allow testing that the print dialog actually appears.

As a smoke test, I added <code>$I-&gt;seeInCurrentUrl('print=true');</code> (because this URL parameter triggers <code>window.print()</code>).

blocks|key|519576|text|可以在Chrome中使用Selenium处理打印对话框。不确定是否使用其他浏览器。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|519577|在ChromeDriver-2.17中添加了对打印对话框的访问。详情可在此处找到：https://bugs.chromium.org/p/chromedriver/issues/detail?id=1087|offset|length|519578|右击Print对话框->+Inspect+Element。因此，DOM+of+Print对话框将在单独的窗口中打开。现在，您可以为对话框上的任何元素生成定位器，并在测试中使用它们。|519579|要关闭打印对话框，可以执行以下操作：|519580|//Switch+to+Print+dialog
Set<String>+windowHandles+=+driver.getWindowHandles();
if+(!windowHandles.isEmpty())+{
++++driver.switchTo().window((String)+windowHandles.toArray()[windowHandles.size()+-+1]);
}
//Now+work+with+the+dialog+as+with+an+ordinary+page:++
driver.findElement(By.className("cancel")).click();|code-block|syntax|javascript|519581|entityMap|0|LINK|mutability|MUTABLE|url|https://bugs.chromium.org/p/chromedriver/issues/detail?id=1087^0|0|15|1Q|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|X|8|@]|9|@$D|Y|E|Z|1|10]]|A|$]]|$1|F|3|G|5|6|7|11|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|12|8|@]|9|@]|A|$]]|$1|J|3|K|5|L|7|13|8|@]|9|@]|A|$M|N]]|$1|O|3|-4|5|6|7|14|8|@]|9|@]|A|$]]]|P|$Q|$5|R|S|T|A|$U|V]]]]

One CAN handle Print dialog with Selenium in Chrome. Not sure about other browsers.

Access to Print dialog was added in ChromeDriver-2.17. Details can be found here:
<a href="https://bugs.chromium.org/p/chromedriver/issues/detail?id=1087" rel="noreferrer">https://bugs.chromium.org/p/chromedriver/issues/detail?id=1087</a>

Right-click on Print dialog -> Inspect Element. As a result, the DOM of Print dialog will open in a separate window. Now you can produce locators for any element on the dialog and use them in your tests.

To close the Print dialog one can do the following: 

<pre><code>//Switch to Print dialog
Set&lt;String&gt; windowHandles = driver.getWindowHandles();
if (!windowHandles.isEmpty()) {
 driver.switchTo().window((String) windowHandles.toArray()[windowHandles.size() - 1]);
}
//Now work with the dialog as with an ordinary page: 
driver.findElement(By.className("cancel")).click();
</code></pre>

blocks|key|519642|text|我能够通过添加--kiosk-printing来解决这个问题，它完全绕过了打印对话框。我将我的默认打印设置为pdf，所以我最终在我的Downloads文件夹中得到了一个pdf，但至少selenium不会挂起。下面是代码的样子：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|519643|++++++++ChromeOptions+cOptions+=+new+ChromeOptions();
++++++++cOptions.addArguments("kiosk-printing");
++++++++RemoteWebDriver+driver+=+new+RemoteWebDriver(hostUrl,+cOptions);|code-block|syntax|javascript|519644|entityMap^0|7|G|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

I was able to resolve this issue by adding <code>--kiosk-printing</code> which bypasses the print dialog completely. I have my default print set to pdf, so I end up with a pdf in my Downloads folder, but at least selenium doesn't hang. Here's what the code looks like:

<pre><code> ChromeOptions cOptions = new ChromeOptions();
 cOptions.addArguments("kiosk-printing");
 RemoteWebDriver driver = new RemoteWebDriver(hostUrl, cOptions);
</code></pre>

blocks|key|519733|text|我试图从一个网站上的模式化列表打印100%2B页面，而这个网站不允许“全部打印”。所以从理论上讲，selenium会自动帮我解决这个问题。我为打印对话框窗口想出了一个完全非正统的解决方案。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|519734|##Python+code
import+time
import+threading
from+pynput.mouse+import+Button,+Controller
mouse+=+Controller()

##selenium+starting+up+website+stuff+here

def+website_print_button():
++++browser.find_element_by_id('printButton').click()

def+push():
++++time.sleep(4)++++#4+second+delay+to+give+the+computer+time+to+open+print+dialog
++++mouse.position+=+[1131,+733]+#where+my+print+button+is+located
++++mouse.click(Button.left,+1)

def+letsgo():

++++for+x+in+range(printing_amount):
++++++++browser.find_element_by_xpath('/html/body/div[1]/form/table[4]/tbody/tr['%2Bstr(x%2B1)%2B']/td[1]/a/b').click()
++++++++browser.find_element_by_css_selector('ul.light-green.button').click()
++++++++browser.switch_to.window(browser.window_handles[1])
++++++++t2+=+threading.Thread(target=push)
++++++++t2.start()
++++++++t1+=+threading.Thread(target=website_print_button)
++++++++t1.start()
++++++++time.sleep(5)
++++++++browser.close()
++++++++browser.switch_to.window(browser.window_handles[0])
++++++++browser.find_element_by_class_name('c').click()|code-block|syntax|javascript|519735|Selenium通常会等待打印对话框窗口打开时发生的事情。我使用了我最近学到的叫做“线程”的东西，这让我在技术上可以同时做两件事。我会要求点击在4秒内启动(推送功能)，然后，Selenium会立即点击网站打印按钮。当Selenium打开打印对话框窗口时，它被卡住等待，但在selenium打开打印窗口的4秒后，延迟的单击仍在运行并等待单击。然后，单击将执行，selenium重新获得控制权，因为打印窗口已得到处理。|519736|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

I was trying to print 100+ pages from a patterned list on a website that did not allow for a 'print-all'. So selenium would help me with this automatically in theory.
I came up with a completely unorthodox solution to the print dialog window.
<pre><code>##Python code
import time
import threading
from pynput.mouse import Button, Controller
mouse = Controller()

##selenium starting up website stuff here

def website_print_button():
 browser.find_element_by_id('printButton').click()

def push():
 time.sleep(4) #4 second delay to give the computer time to open print dialog
 mouse.position = [1131, 733] #where my print button is located
 mouse.click(Button.left, 1)

def letsgo():

 for x in range(printing_amount):
 browser.find_element_by_xpath('/html/body/div[1]/form/table[4]/tbody/tr['+str(x+1)+']/td[1]/a/b').click()
 browser.find_element_by_css_selector('ul.light-green.button').click()
 browser.switch_to.window(browser.window_handles[1])
 t2 = threading.Thread(target=push)
 t2.start()
 t1 = threading.Thread(target=website_print_button)
 t1.start()
 time.sleep(5)
 browser.close()
 browser.switch_to.window(browser.window_handles[0])
 browser.find_element_by_class_name('c').click()
</code></pre>
Selenium would usually get stuck waiting for something to happen when the print dialog window opened up. I used something I recently learned called 'Threading' and this allowed me to do two things at once technically. I would call for a click to initiate in 4 seconds (push function) and then immediately after, Selenium would click on the websites print button. When Selenium opened up the print dialog window, it became stuck waiting around, but the delayed click was still running and waiting to click after 4 seconds of selenium opening the print window. Then the click would execute, and selenium retook control because the print window was taken care of.

I have to handle print dialog (the same one that appears when clicking ctrl-p in browser). I tried with:

<pre><code>Alert printDialog = driver.switchTo().alert();
printDialog.dismiss();
</code></pre>

but it didn't work. Also I couldn't catch its window handle, because it's not a window... 

Is it possible to handle these objects and how?

How to handle print dialog in Selenium?

Windows

Python

我必须处理打印对话框(与在浏览器中单击ctrl-p时出现的对话框相同)。我尝试过：Alert printDialog = driver.switchTo().alert();printDialog.dismiss();但它并没有起作用。我也不能抓住它的窗口句柄，因为它不是一个窗口...是否可以处理这些对象以及如何处理这...

问在Selenium中如何处理打印对话框？
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