java 无法执行 Selenium 异步脚本
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Unable to execute Selenium asynchronous script
提问by redochka
Why am I getting an exception with selenium 2.25.0 when trying to execute asynchronous script.
为什么我在尝试执行异步脚本时遇到 selenium 2.25.0 异常。
//navigate to my test page.
String script = "var callback = arguments[arguments.length - 1];" +
"getResult(callback)";
Object result = ((JavascriptExecutor)driver).executeAsyncScript(script, "");
System.out.println(result);
The test page contains the following script:
测试页包含以下脚本：
var result = true;
function getResult(callback){
window.setTimeout(function(){callback(true);}, 3000);
}
This throws an exception:
这会引发异常：
FAILED: testSeleniumAsync
org.openqa.selenium.TimeoutException: Script execution failed. Script: var callback = arguments[arguments.length - 1];getResult(callback);
Timed out waiting for asyncrhonous script result after 2 ms (WARNING: The server did not provide any stacktrace information)
Command duration or timeout: 11 milliseconds
Build info: version: '2.25.0', revision: '17482', time: '2012-07-18 22:18:01'
System info: os.name: 'Linux', os.arch: 'amd64', os.version: '3.2.0-27-generic', java.version: '1.6.0_26'
Driver info: driver.version: RemoteWebDriver
Session ID: 6347b507cf22b6c2d3312937a82a0a02
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
If I remove the setTimeout from my script and I call callback it works. But this is not what I want.
如果我从我的脚本中删除 setTimeout 并调用回调，它会起作用。但这不是我想要的。
Thanks.
谢谢。
回答by Ashwin Prabhu
Its very strange that the API is timing out in 2 ms.
API 在 2 毫秒内超时，这很奇怪。
I am guessing that the script time out is somehow incorrectly configured (<= 0sec). Since your window timeout occurs after 3 secs, try setting the script time out to some value greater than 3 secs, before you make the call.
我猜脚本超时在某种程度上配置不正确（<= 0sec）。由于您的窗口超时发生在 3 秒后，请尝试将脚本超时设置为大于 3 秒的某个值，然后再进行调用。
Like so:
像这样：
driver.manage().timeouts().setScriptTimeout(5, TimeUnit.SECONDS);
That might work.
那可能会奏效。
