1）我正在做一个教程来展示xpath的findElements是如何工作的。我想知道为什么它返回<div>带有attribute元素之后的所有文本id=container。

xpath的代码： By.xpath("//div[@id='container']

2）我应该如何修改代码，使其仅返回跟随父注释的第一个或前几个节点，例如第一个节点（如“ Home”），第一个节点（如Home，手动测试和自动化测试）。

感谢您的建议和帮助！

这是本教程的代码片段：

import java.util.List;

import org.junit.Test;
import org.junit.Before;
import org.junit.After;

import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.firefox.FirefoxDriver;

public class WD_findElements 
{
    @Test
    public void test_byxpath(){

        WebDriver driver = new FirefoxDriver();

        try{
            driver.get("http://www.hexbytes.com");

        List<WebElement> elements = driver.findElements(By.xpath("//div[@id='container']"));    
            System.out.println("Test7 number of elements: " + elements.size());

            for(WebElement ele : elements){
                //ele.sendKeys("hexbyes");
                System.out.println(ele.getText());
                //System.out.println(ele.getAttribute("id"));
                //System.out.println(ele.getTagName());
            } 
        }
        finally {
            driver.close();
        }

    }//end of test_byxpath

 public void xpathDemo2() {
           WebDriver driver = new FirefoxDriver();
           try{
               driver.get("http://www.hexbytes.com");
               WebElement webelement = driver.findElement(By.id("container"));
               //matching single element with attribute value=container
               System.out.println("The id value is: " + webelement.getAttribute("id"));
               System.out.println("The tag name is: " + webelement.getTagName());
           }
           finally {
               driver.close();
           }
       }//end of xpathDemo2

public void xpathDemo3() {
       WebDriver driver = new FirefoxDriver();
       try{
           driver.get("http://www.hexbytes.com");
          //find first child node of div element with attribute=container
          List<WebElement> elements = driver.findElements(By.xpath("//div[@id='container']/*[1]"));
          System.out.println("Test1 number of elements: " + elements.size());

          for(WebElement ele : elements){
              System.out.println(ele.getTagName());
              System.out.println(ele.getAttribute("id"));
              System.out.println("");
              System.out.println("");
          }
   }
   finally {
       driver.close();
   }
 }//end of xpathDemo3
 }