selenium 加载jquery

 packagecom.example.tests;

 import staticorg.junit.Assert.*;
 importjava.util.*;
 importorg.junit.*;
 importorg.openqa.selenium.*;
 importorg.openqa.selenium.ie.InternetExplorerDriver;

 public classSelenium2{
     WebDriver driver = newInternetExplorerDriver();
     JavascriptExecutor jse = (JavascriptExecutor) driver;

     @Test
     public voidjQueryTest() {
         driver.get("http://www.baidu.com/");
         injectjQueryIfNeeded();

         List<WebElement> elements = (List<WebElement>) jse.executeScript("return jQuery.find('#nv a')");

         assertEquals(7, elements.size()); // 验证超链接的数量
         for (inti = 0; i < elements.size(); i++) {
             System.out.print(elements.get(i).getText() + "、");
         }

         driver.close();
     }

     private voidinjectjQueryIfNeeded() {
         if(!jQueryLoaded())
             injectjQuery();
     }

     // 判断是已加载jQuery
     publicBoolean jQueryLoaded() {
         Boolean loaded;
         try{
             loaded = (Boolean) jse.executeScript("return "+ "jQuery()!=null");
         } catch(WebDriverException e) {
             loaded = false;
         }
         returnloaded;
     }

     // 通过注入jQuery
     public voidinjectjQuery() {
         jse.executeScript(" var headID = "
                 + "document.getElementsByTagName(\"head\")[0];"
                 + "var newScript = document.createElement('script');"
                 + "newScript.type = 'text/javascript';" + "newScript.src = "
                 + "'http://ajax.googleapis.com/ajax/"
                 + "libs/jquery/1.7.2/jquery.min.js';"
                 + "headID.appendChild(newScript);");
     }
 }