WebDriver中使用JQuery选择器

package com.example.tests;
import static org.junit.Assert.*;
import java.util.*;
import org.junit.*;
import org.openqa.selenium.*;
import org.openqa.selenium.ie.InternetExplorerDriver;

public class test {
    WebDriver driver = new InternetExplorerDriver();
    JavascriptExecutor jse = (JavascriptExecutor)driver;
    @Test
    public void jQueryTest() {
        driver.get("http://www./");
            //在executeScript中调用jQuery.find(jquerySelector);
             List<WebElement> elements =
                     (List<WebElement>)jse.executeScript("return jQuery.find" +"('.menu-item a:even')");
             assertEquals(3,elements.size());
             assertEquals("Download",elements.get(0).getText());
             assertEquals("Blog",elements.get(1).getText());
             assertEquals("Browser Support",elements.get(2).getText());
            driver.close();
    }
}

2. 另一种情况就是页面没有另载jQuery，我们需要先 判断再自已手动注入，以百度为例，百度首页是没有加载的

package com.example.tests;

import static org.junit.Assert.*;
import java.util.*;
import org.junit.*;
import org.openqa.selenium.*;
import org.openqa.selenium.ie.InternetExplorerDriver;

public class Selenium2{
    WebDriver driver = new InternetExplorerDriver();
    JavascriptExecutor jse = (JavascriptExecutor) driver;

    @Test
    public void jQueryTest() {
        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 (int i = 0; i < elements.size(); i++) {
            System.out.print(elements.get(i).getText() + "、");
        }
        driver.close();
    }
    private void injectjQueryIfNeeded() {
        if (!jQueryLoaded())
            injectjQuery();
    }

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

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