在selenium2中定位元素时出错

Question

我在testNG中使用selenium2.0。当使用XPATH或CSS为元素定位时，会显示错误“unable to locate the element”。我已经用Java编写了如下代码：

public class mytest {

    public static WebDriver driver;
    public Alert alert;

    @BeforeClass
    public static void setUpBeforeClass() throws Exception {
        driver=new FirefoxDriver();

    driver.get("http://localhost:4503/xyz.html");

    }

    public static void clickButton(WebDriver driver, String identifyBy, String locator){
        if (identifyBy.equalsIgnoreCase("xpath")){
            driver.findElement(By.xpath(locator)).click();
        }else if (identifyBy.equalsIgnoreCase("id")){
            driver.findElement(By.id(locator)).click();
        }else if (identifyBy.equalsIgnoreCase("name")){
            driver.findElement(By.name(locator)).click();
        }

    }

    public static void typeinEditbox(WebDriver driver, String identifyBy, String locator, String valuetoType){
        if (identifyBy.equalsIgnoreCase("xpath")){
            driver.findElement(By.xpath(locator)).sendKeys(valuetoType);
        }else if (identifyBy.equalsIgnoreCase("id")){
            driver.findElement(By.id(locator)).sendKeys(valuetoType);
        }else if (identifyBy.equalsIgnoreCase("name")){
            driver.findElement(By.name(locator)).sendKeys(valuetoType);
        }

    }


    public static void openApplication(WebDriver driver, String url) {
        driver.get(url);
    }






    @Test
    public void testAcrolinxApplication() throws InterruptedException {
        openApplication(driver,"http://xyz.com");
        typeinEditbox(driver,"name","p_user","xxx");
        typeinEditbox(driver,"name","p_pas","yyy");
        clickButton(driver,"id","input-submit");

/*Up to this its working fine …..

At below line this throws error could not locate the xpath element "//a[@id='cq-gen100']/em/span/span" BUT THIS IS WOKING FINE IN Selenium1.0 api that is with 
selenium.click("//a[@id='cq-gen100']/em/span/span"); */

driver.findElement(By.xpath("//a[@id='cq-gen100']/em/span/span")).click();




    }

}

请在这方面帮帮我。预先感谢…

Answer 1

我用过driver.manage().timeouts().implicitlyWait(10，TimeUnit.SECONDS)；等了一段时间，没看到它起作用了。

Answer 2

确保XPath/CSS查询正确

下载Firefinder之类的东西，或者可以直接在页面上测试XPath查询的任何其他东西。一旦确定查询是正确的，就可以在Selenium中缩小问题的范围。

缩小了Selenium中的问题范围

例如，如果您的查询"//a[@id='cq-gen100']/em/span/span"不工作，请尝试查询的基础，看看Selenium是否能找到它(现在不用担心单击)。从那里开始递增，直到错误再次出现。

示例：

driver.findElement(By.xpath("//a@id='cq-gen100'")；//工作吗？driver.findElement(By.xpath("//a@id='cq-gen100'/em")；//工作吗？driver.findElement(By.xpath("//a@id='cq-gen100'/em/span")；//工作? //etc