Java Selenium 等待 Ajax 内容加载 - 通用方法
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/33348600/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Selenium wait for Ajax content to load - universal approach
提问by Fabian Lurz
Is there a universal approach for Selenium to wait till all ajax content has loaded? (not tied to a specific website - so it works for every ajax website)
Selenium 是否有一种通用的方法可以等到所有 ajax 内容加载完毕？（不绑定到特定网站 - 所以它适用于每个 ajax 网站）
采纳答案by LINGS
You need to wait for Javascript and jQuery to finish loading. Execute Javascript to check if jQuery.activeis 0and document.readyStateis complete, which means the JS and jQuery load is complete.
您需要等待 Javascript 和 jQuery 完成加载。执行 Javascript 来检查jQuery.activeis0和document.readyStateis complete，这意味着 JS 和 jQuery 加载完成。
public boolean waitForJSandJQueryToLoad() {
WebDriverWait wait = new WebDriverWait(driver, 30);
// wait for jQuery to load
ExpectedCondition<Boolean> jQueryLoad = new ExpectedCondition<Boolean>() {
@Override
public Boolean apply(WebDriver driver) {
try {
return ((Long)((JavascriptExecutor)getDriver()).executeScript("return jQuery.active") == 0);
}
catch (Exception e) {
// no jQuery present
return true;
}
}
};
// wait for Javascript to load
ExpectedCondition<Boolean> jsLoad = new ExpectedCondition<Boolean>() {
@Override
public Boolean apply(WebDriver driver) {
return ((JavascriptExecutor)getDriver()).executeScript("return document.readyState")
.toString().equals("complete");
}
};
return wait.until(jQueryLoad) && wait.until(jsLoad);
}
回答by Slav Kurochkin
As Mark Collin described in his book "Mastering Selenium Webdriver", use JavascriptExecutor let you figure out whether a website using jQuery has finished making AJAX calls
正如 Mark Collin 在他的《掌握 Selenium Webdriver》一书中所描述的，使用 JavascriptExecutor 可以让你判断一个使用 jQuery 的网站是否已经完成了 AJAX 调用
public class AdditionalConditions {
public static ExpectedCondition<Boolean> jQueryAJAXCallsHaveCompleted() {
return new ExpectedCondition<Boolean>() {
@Override
public Boolean apply(WebDriver driver) {
return (Boolean) ((JavascriptExecutor) driver).executeScript("return (window.jQuery != null) && (jQuery.active === 0);");
}
};
}
}
回答by eagle12
I don't believe that there is a universal approach out of the box. I typically make a method that does a .waituntilrowcount(2)or waituntilvisible()that polls an element.
我不相信有一种开箱即用的通用方法。我通常会创建一个方法来执行.waituntilrowcount(2)或waituntilvisible()轮询元素。
回答by Aniket Wadkar
I have been using this simple do while to iterate until an AJAX is finished. It consistently works for me.
我一直在使用这个简单的 do while 进行迭代，直到 AJAX 完成。它始终对我有用。
public void waitForAjax() throws InterruptedException{
while (true)
{
Boolean ajaxIsComplete = (Boolean) ((JavascriptExecutor)driver).executeScript("return jQuery.active == 0");
if (ajaxIsComplete){
info("Ajax Call completed. ");
break;
}
Thread.sleep(150);
}
}
