Selenium 等待 Ajax 内容加载 - 通用方法 [英] Selenium wait for Ajax content to load - universal approach

问题描述

Selenium 是否有一种通用的方法可以等待所有 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)

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)

推荐答案

您需要等待 Javascript 和 jQuery 完成加载.执行 Javascript 来检查 jQuery.active 是否为 0 和 document.readyState 是否为 complete，这意味着 JS 和jQuery 加载完成.

You need to wait for Javascript and jQuery to finish loading. Execute Javascript to check if jQuery.active is 0 and document.readyState is complete, which means the JS and jQuery load is complete.

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);
}

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