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社区首页 >问答首页 >Selenium "NoSuchAlertError:无警报打开“错误

问Selenium "NoSuchAlertError:无警报打开“错误
EN

Stack Overflow用户
提问于 2014-05-07 20:54:50
回答 5查看 18.1K关注 0票数 7

在Selenium中，我单击一个按钮，就会出现一个警告框，我试图接受这个警告框，但是它给了我一个错误。

代码语言：javascript
复制
          element.click();
          driver.switchTo().alert().accept();

这很矛盾..。有时测试通过，有时会给我错误.

该错误看起来如下：

代码语言：javascript
复制
NoSuchAlertError: no alert open
  (Session info: chrome=34.0.1847.131)
  (Driver info: chromedriver=2.9.248307,platform=Mac OS X 10.9.2 x86_64)
      at new bot.Error (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/atoms/error.js:109:18)
      at Object.bot.response.checkResponse (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/atoms/response.js:106:9)
      at /Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/webdriver.js:276:20
      at /Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/goog/base.js:1178:15
      at webdriver.promise.ControlFlow.runInNewFrame_ (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:1598:20)
      at notify (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:428:12)
      at notifyAll (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:397:7)
      at resolve (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:375:7)
      at fulfill (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:493:5)
      at /Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:1465:10
      at /Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/goog/base.js:1178:15
      at webdriver.promise.ControlFlow.runInNewFrame_ (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:1598:20)
      at notify (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:428:12)
      at notifyAll (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:397:7)
      at resolve (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:375:7)
      at fulfill (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:493:5)
      at /Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/goog/base.js:1178:15
      at webdriver.promise.ControlFlow.runInNewFrame_ (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:1598:20)
      at notify (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:428:12)
      at notifyAll (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:397:7)
      at resolve (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:375:7)
      at fulfill (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:493:5)
      at /Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:678:49
      at /Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/http/http.js:96:5
      at IncomingMessage.<anonymous> (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/http/index.js:114:7)
      at IncomingMessage.EventEmitter.emit (events.js:117:20)
      at _stream_readable.js:920:16
      at process._tickCallback (node.js:415:13)
  ==== async task ====
  WebDriver.switchTo().alert()
      at webdriver.WebDriver.schedule (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/webdriver.js:267:15)
      at webdriver.WebDriver.TargetLocator.alert (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/webdriver.js:1429:27)
      at /Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/test/bandbooking/form.js:87:39
      at /Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/goog/base.js:1178:15
      at webdriver.promise.ControlFlow.runInNewFrame_ (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:1598:20)
      at notify (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:428:12)
      at notifyAll (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:397:7)
      at resolve (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:375:7)
      at fulfill (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:493:5)
      at /Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/goog/base.js:1178:15
      at /Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/goog/base.js:1178:15
      at webdriver.promise.ControlFlow.runInNewFrame_ (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:1598:20)
      at notify (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:428:12)
      at notifyAll (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:397:7)
      at resolve (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:375:7)
      at fulfill (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:493:5)
      at /Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/goog/base.js:1178:15
      at webdriver.promise.ControlFlow.runInNewFrame_ (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:1598:20)
      at notify (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:428:12)
      at then (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:478:7)
      at Object.webdriver.promise.asap (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:723:11)
      at webdriver.promise.ControlFlow.runInNewFrame_ (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:1609:25)
      at notify (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:428:12)
      at notifyAll (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:397:7)
      at /Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/goog/base.js:1178:15
      at /Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/goog/base.js:1178:15
      at webdriver.promise.ControlFlow.runInNewFrame_ (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:1598:20)
      at notify (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:428:12)
      at then (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:478:7)
      at resolve (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:369:18)
      at fulfill (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:493:5)
      at /Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/goog/base.js:1178:15
      at webdriver.promise.ControlFlow.runInNewFrame_ (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:1598:20)
      at notify (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:428:12)
      at then (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:478:7)
      at Object.webdriver.promise.asap (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:723:11)
      at webdriver.promise.ControlFlow.runInNewFrame_ (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:1609:25)
      at notify (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:428:12)
      at notifyAll (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:397:7)
      at /Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/goog/base.js:1178:15
      at /Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/goog/base.js:1178:15
      at webdriver.promise.ControlFlow.runInNewFrame_ (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:1598:20)
      at notify (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:428:12)
      at then (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:478:7)
      at resolve (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:369:18)
      at fulfill (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:493:5)
      at /Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:1465:10
      at /Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/goog/base.js:1178:15
      at webdriver.promise.ControlFlow.runInNewFrame_ (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:1598:20)
      at notify (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:428:12)
      at then (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:478:7)
      at Object.webdriver.promise.asap (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:723:11)
      at newFrame.then.e (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:1614:25)
      at /Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/goog/base.js:1178:15
      at webdriver.promise.ControlFlow.runInNewFrame_ (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:1598:20)
      at notify (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:428:12)
      at notifyAll (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:397:7)
      at resolve (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:375:7)
      at fulfill (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:493:5)
      at webdriver.promise.ControlFlow.resolveFrame_ (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:1519:9)
      at webdriver.promise.ControlFlow.getNextTask_ (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:1488:12)
      at webdriver.promise.ControlFlow.runEventLoop_ (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:1446:59)
      at wrapper [as _onTimeout] (timers.js:252:14)
      at Timer.listOnTimeout [as ontimeout] (timers.js:110:15)
  ==== async task ====
      at Context.<anonymous> (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/testing/index.js:126:14)
      at Test.Runnable.run (/usr/local/lib/node_modules/mocha/lib/runnable.js:196:15)
      at Runner.runTest (/usr/local/lib/node_modules/mocha/lib/runner.js:374:10)
      at /usr/local/lib/node_modules/mocha/lib/runner.js:452:12
      at next (/usr/local/lib/node_modules/mocha/lib/runner.js:299:14)
      at /usr/local/lib/node_modules/mocha/lib/runner.js:309:7
      at next (/usr/local/lib/node_modules/mocha/lib/runner.js:247:23)
      at /usr/local/lib/node_modules/mocha/lib/runner.js:271:7
      at done (/usr/local/lib/node_modules/mocha/lib/runnable.js:185:5)
      at /usr/local/lib/node_modules/mocha/lib/runnable.js:199:9
      at /Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/testing/index.js:92:5
      at /Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/goog/base.js:1178:15
      at webdriver.promise.ControlFlow.runInNewFrame_ (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:1598:20)
      at notify (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:428:12)
      at notifyAll (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:397:7)
      at resolve (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:375:7)
      at fulfill (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:493:5)
      at /Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:1465:10
      at Object.webdriver.promise.asap (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:732:5)
      at newFrame.then.e (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:1614:25)
      at /Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/goog/base.js:1178:15
      at webdriver.promise.ControlFlow.runInNewFrame_ (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:1598:20)
      at notify (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:428:12)
      at notifyAll (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:397:7)
      at resolve (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:375:7)
      at fulfill (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:493:5)
      at webdriver.promise.ControlFlow.resolveFrame_ (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:1519:9)
      at webdriver.promise.ControlFlow.getNextTask_ (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:1488:12)
      at webdriver.promise.ControlFlow.runEventLoop_ (/Users/kstrife/Desktop/experiments/seleniumNode/selenium-webdriver/lib/webdriver/promise.js:1446:59)
      at wrapper [as _onTimeout] (timers.js:252:14)
      at Timer.listOnTimeout [as ontimeout] (timers.js:110:15)
javascript
node.js
selenium
selenium-webdriver
selenium-chromedriver
EN

回答 5

Stack Overflow用户

回答已采纳

发布于 2014-09-05 20:41:36

documented solution不起作用。

代码语言：javascript
复制
// this is the documented solution, which doesn't work
driver.switchTo().alert().dismiss().then(null, function(e) {
  if (e.code !== webdriver.ErrorCode.NO_SUCH_ALERT) {
    throw e;
  }
});

不管发生什么，它都会抛出NoSuchAlertError: no alert open。然而，这种修改后的方法有效：

代码语言：javascript
复制
driver.switchTo().alert().thenCatch(function (e) {
    // 27 maps to bot.ErrorCode.NO_MODAL_DIALOG_OPEN: http://selenium.googlecode.com/git/docs/api/javascript/source/lib/atoms/error.js.src.html#l31
    if (e.code !== 27) { throw e; }
})
.then(function (alert) {
    if (alert) { return alert.dismiss(); }
});
  • 这将尝试切换到一个打开的警报。
  • 如果没有找到警报，则处理NoSuchAlertError异常，但抛出其他错误(因为我们不想吞噬所有错误)。
  • 如果找到了，然后调用dismiss来拒绝它。如果你愿意的话，可以随时打电话给accept。

注意到：thenCatch的地位是至关重要的。这是违反推理和他们的文档控制流，但这就是今天的工作。

票数 7
EN

Stack Overflow用户

发布于 2014-05-08 06:01:08

不必使用Thread.sleep，您可以使用显式等待警报，如下所示：

代码语言：javascript
复制
WebDriverWait wait = new WebDriverWait(driver, 10);
WebElement element = wait.until(ExpectedConditions.alertIsPresent());

然后接受警告：

代码语言：javascript
复制
driver.switchTo().alert().accept();
票数 4
EN

Stack Overflow用户

发布于 2014-05-07 21:15:22

我只是睡了1秒才接受。

代码语言：javascript
复制
element.click();
driver.sleep(1000);
driver.switchTo().alert().accept();
票数 1
EN
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：

https://stackoverflow.com/questions/23528233

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