三，Selenium3 + java 查找页面元素

1, 通过ID 查找

package seleniumtest.seleniumtest;

import java.net.MalformedURLException;

import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.openqa.selenium.firefox.FirefoxBinary;
import org.openqa.selenium.chrome.*;

/**
 * test Baidu By Id
 *
 */
public class testBaiduById
{
    public static void main( String[] args ) throws InterruptedException
    {
        System.setProperty("webdriver.gecko.driver","C:\\Program Files (x86)\\Mozilla Firefox\\geckodriver.exe");

        WebDriver driver = new FirefoxDriver();

        driver.get("");
        WebElement searchBox = driver.findElement(By.id("kw"));
        searchBox.sendKeys("test Baidu by Id");

        WebElement searchButton = driver.findElement(By.id("su"));
        searchButton.submit();

        Thread.sleep(2000);

        driver.close();
    }
}

2, 通过name 查找

package seleniumtest.seleniumtest;

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

public class searchbyname {
    public static void main( String[] args ) throws InterruptedException
    {
        System.setProperty("webdriver.gecko.driver","C:\\Program Files (x86)\\Mozilla Firefox\\geckodriver.exe");

        WebDriver driver = new FirefoxDriver();

        driver.get("");
        WebElement searchBox = driver.findElement(By.name("q"));
        searchBox.sendKeys("test Douban by Name");
        searchBox.submit();

        Thread.sleep(10000);

        driver.close();
    }
}

3， 通过classname查找

package seleniumtest.seleniumtest;

import java.net.MalformedURLException;
import java.net.URL;

import org.openqa.selenium.By;
import org.openqa.selenium.JavascriptExecutor;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.openqa.selenium.remote.DesiredCapabilities;
import org.openqa.selenium.remote.RemoteWebDriver;

public class searchbyclassname {
    public static void main(String[] args) throws InterruptedException {

       System.setProperty("webdriver.gecko.driver","C:\\Users\\liutaoxa\\geckodriver.exe");
        //第一个参数：表示服务器的地址。第二个参数：表示预期的执行对象，其他的浏览器都可以以此类推
          WebDriver driver = new FirefoxDriver();
        driver.manage().window().maximize();
        driver.get("");

        WebElement searchBox = driver.findElement(By.className("search-combobox-input"));
        searchBox.sendKeys("test Taobao by Classname");
        searchBox.submit();

        Thread.sleep(5000);

        driver.quit();
    }
}

4, 通过tagname 查找

package seleniumtest.seleniumtest;

import java.net.MalformedURLException;
import java.net.URL;
import java.util.List;

import org.openqa.selenium.By;
import org.openqa.selenium.JavascriptExecutor;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.openqa.selenium.remote.DesiredCapabilities;
import org.openqa.selenium.remote.RemoteWebDriver;

public class searchbytagname {
    public static void main(String[] args) throws InterruptedException {

       System.setProperty("webdriver.gecko.driver","C:\\Users\\liutaoxa\\geckodriver.exe");
        //第一个参数：表示服务器的地址。第二个参数：表示预期的执行对象，其他的浏览器都可以以此类推
          WebDriver driver = new FirefoxDriver();
        driver.manage().window().maximize();
        driver.get("");

        List<WebElement> scriptlist = driver.findElements(By.tagName("script"));
        System.out.println("There are "+scriptlist.size()+" Scripts in Xiaomi’s main page");

        Thread.sleep(5000);

        driver.quit();
    }
}

5, 通过linkText 查找：

package seleniumtest.seleniumtest;

import java.net.MalformedURLException;
import java.net.URL;
import java.util.List;

import org.openqa.selenium.By;
import org.openqa.selenium.JavascriptExecutor;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.openqa.selenium.remote.DesiredCapabilities;
import org.openqa.selenium.remote.RemoteWebDriver;

public class searchbylinktext {
    public static void main(String[] args) throws InterruptedException {

       System.setProperty("webdriver.gecko.driver","C:\\Users\\liutaoxa\\geckodriver.exe");
        //第一个参数：表示服务器的地址。第二个参数：表示预期的执行对象，其他的浏览器都可以以此类推
          WebDriver driver = new FirefoxDriver();
        //driver.manage().window().maximize();
        driver.get("");

        WebElement contactLink = driver.findElement(By.linkText("联系方式"));
        contactLink.click();

        Thread.sleep(5000);

        driver.quit();
    }
}

6，通过PartialLinkText查找：

package seleniumtest.seleniumtest;

import java.net.MalformedURLException;
import java.net.URL;
import java.util.List;

import org.openqa.selenium.By;
import org.openqa.selenium.JavascriptExecutor;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.openqa.selenium.remote.DesiredCapabilities;
import org.openqa.selenium.remote.RemoteWebDriver;

public class searchbyPartialLinkText {
    public static void main(String[] args) throws InterruptedException {

       System.setProperty("webdriver.gecko.driver","C:\\Users\\liutaoxa\\geckodriver.exe");
        //第一个参数：表示服务器的地址。第二个参数：表示预期的执行对象，其他的浏览器都可以以此类推
          WebDriver driver = new FirefoxDriver();
        //driver.manage().window().maximize();
        driver.get("");

        WebElement contactLink = driver.findElement(By.partialLinkText("联系"));
        contactLink.click();

        Thread.sleep(5000);

        driver.quit();
    }
}

7，通过CSS selector查找：

package seleniumtest.seleniumtest;

import java.net.MalformedURLException;
import java.net.URL;
import java.util.List;

import org.openqa.selenium.By;
import org.openqa.selenium.JavascriptExecutor;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.openqa.selenium.remote.DesiredCapabilities;
import org.openqa.selenium.remote.RemoteWebDriver;

public class searchbyCSSselector {
    public static void main(String[] args) throws InterruptedException {

       System.setProperty("webdriver.gecko.driver","C:\\Users\\liutaoxa\\geckodriver.exe");
        //第一个参数：表示服务器的地址。第二个参数：表示预期的执行对象，其他的浏览器都可以以此类推
          WebDriver driver = new FirefoxDriver();
        //driver.manage().window().maximize();
        driver.get("");

        WebElement searchBox = driver.findElement(By.cssSelector("#kw"));
        searchBox.sendKeys("webdriver");
        searchBox.submit();

        Thread.sleep(5000);

        driver.quit();
    }
}

8, 通过XPath查找：

package seleniumtest.seleniumtest;

import org.openqa.selenium.firefox.FirefoxDriver;
import org.testng.annotations.Test;
import org.testng.annotations.AfterClass;
import org.testng.annotations.BeforeClass;
import org.openqa.selenium.*;
import org.openqa.selenium.support.ui.Wait;
import org.openqa.selenium.support.ui.WebDriverWait;
import static org.openqa.selenium.support.ui.ExpectedConditions.visibilityOfElementLocated;


public class searchbyXPathTest {

  WebDriver driver;
  @BeforeClass
  public void setup() {
     System.setProperty("webdriver.gecko.driver","C:\\Users\\liutaoxa\\geckodriver.exe");
        driver = new FirefoxDriver();
  }

  @AfterClass
  public void tearDown() {
        driver.close();
     // driver.quit();
  }

  @Test
  public void testBaidu() throws InterruptedException {
        driver.get("");

        WebElement searchBox = driver.findElement(By.xpath("/html/body/div[2]/div[1]/div/div[1]/div/form/span[1]/input"));
        searchBox.sendKeys("Selenium");

        WebElement searchButton = driver.findElement(By.xpath("//*[@id='su']"));
        searchButton.click();

        Wait <WebDriver> wait = new WebDriverWait(driver,30);
        wait.until(visibilityOfElementLocated(By.xpath("/html/body/div[2]/div[5]/div[1]/div[3]")));

  }
}

9, 通过jQuery查找：
  (1)处理已经加载jQuery的页面：

package seleniumtest.seleniumtest;

import java.net.MalformedURLException;
import java.net.URL;
import java.util.List;

import static org.testng.Assert.assertEquals;
import org.openqa.selenium.By;
import org.openqa.selenium.JavascriptExecutor;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.openqa.selenium.remote.DesiredCapabilities;
import org.openqa.selenium.remote.RemoteWebDriver;

public class searchbyjQuery {
    public static void main(String[] args) throws InterruptedException {

       System.setProperty("webdriver.gecko.driver","C:\\Users\\liutaoxa\\geckodriver.exe");
        //第一个参数：表示服务器的地址。第二个参数：表示预期的执行对象，其他的浏览器都可以以此类推
          WebDriver driver = new FirefoxDriver();

        driver.get("");

        JavascriptExecutor jse = (JavascriptExecutor)driver;

        List <WebElement> elements = (List <WebElement>) jse.executeScript("return jQuery.find('.menu-itm')");

        System.out.println(elements.size());
        assertEquals(10,elements.size());
        assertEquals("Members",elements.get(2).getText());

        driver.quit();
    }
}

(2)处理未加载jQuery的页面：

package seleniumtest.seleniumtest;

import java.net.MalformedURLException;
import java.net.URL;
import java.util.List;

import org.testng.annotations.*;
import static org.testng.AssertJUnit.assertEquals;
import org.openqa.selenium.By;
import org.openqa.selenium.JavascriptExecutor;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebDriverException;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.openqa.selenium.remote.DesiredCapabilities;
import org.openqa.selenium.remote.RemoteWebDriver;

public class loadjQuery{
    WebDriver driver;
    JavascriptExecutor jse;

    @BeforeClass
    public void setup()
    {
        System.setProperty("webdriver.gecko.driver", "C:\\Users\\liutaoxa\\geckodriver.exe");
        driver = new FirefoxDriver();
        jse = (JavascriptExecutor)driver;
    }

    @AfterClass
    public void tearDown()
    {
        driver.close();
        driver.quit();
    }

    @Test
    public void testBaidu() throws InterruptedException
    {
        driver.get("");

        //load jQuery dynamically if needed
        injectjQueryIfNeeded();

        //find the top menu items on baidu page
        List <WebElement> elements = (List <WebElement>)jse.executeScript("return jQuery.find('li.gbt span.gbts')");

        //verify the count of the menu items
        assertEquals(0,elements.size());

        //verify the property of element "Images"
        assertEquals("Images",elements.get(2).getAttribute("textContent"));
    }

    private void injectjQueryIfNeeded()
    {
        if( !jQueryLoaded() )
        {
            injectjQuery();
        }
    }

    public Boolean jQueryLoaded(){
        Boolean loaded = true;
        try{
            loaded = (Boolean)jse.executeScript("return jQuery()! = null");
        }catch(WebDriverException e){
            loaded = false;
        }
        return loaded;
    }

    public void injectjQuery(){
        //load jQuery dynamically in the head of web page
        jse.executeScript(
                "var headID = document.getElementsByTagName(\"head\")[0];" +
                "var newScript = document.createElement('script');" +
                "newScript.src = '" +
                "/jQuery/jquery-1.8.0.js';" +
                "headID.appendChild(newScript)");
    }
}