WebDriver拾级而上·之十三调用Java Script-优快云博客

在用selenium 1.X的时候常常会用到geteval_r()方法来执行一段js脚本来对页面进行处理。
当然selenium webdriver也提供这样的一个方法: JavascriptExecutor. executeScript(string)
例如：
import org.openqa.selenium.JavascriptExecutor;
import org.openqa.selenium.WebDriver;

public classSimpleExample { public static void main(String[] args) { ChromeDriver driver = new ChromeDriver(); <div style="color:rgb(73,73,73); font-family:simsun; font-size:14px; line-height:21px; background-color:rgb(202,207,207)"> driver.executeAsyncScript("arguments[0](); alert('Hello')"); </div> <div style="color:rgb(73,73,73); font-family:simsun; font-size:14px; line-height:21px; background-color:rgb(202,207,207)"> try {</div> <div style="color:rgb(73,73,73); font-family:simsun; font-size:14px; line-height:21px; background-color:rgb(202,207,207)"> Thread.sleep(3000);</div> <div style="color:rgb(73,73,73); font-family:simsun; font-size:14px; line-height:21px; background-color:rgb(202,207,207)"> } catch (InterruptedException e) {</div> <div style="color:rgb(73,73,73); font-family:simsun; font-size:14px; line-height:21px; background-color:rgb(202,207,207)"> e.printStackTrace();</div> <div style="color:rgb(73,73,73); font-family:simsun; font-size:14px; line-height:21px; background-color:rgb(202,207,207)"> }</div> <div style="color:rgb(73,73,73); font-family:simsun; font-size:14px; line-height:21px; background-color:rgb(202,207,207)"> driver.switchTo().alert().accept();</div> } } 上面是一个最简单的例子，打开一个浏览器，然后弹层一个alert框。注意这里的driver要被强制转换成JavascriptExecutor。 下面演示在打开51.com首页如何得到帐号输入框中显示的字符，并打印输出。 <div style="color:rgb(73,73,73); font-family:simsun; font-size:14px; line-height:21px; background-color:rgb(202,207,207)"> <a href="http://photo.blog.sina.com.cn/showpic.html#blogid=6966650401012dxv&url=http://s8.sinaimg.cn/orignal/69666504gc0ab3c7fe647" target="_blank" style="text-decoration:none; color:rgb(106,120,123)"><img src="http://s8.sinaimg.cn/middle/69666504gc0ab3c7fe647&690" width="690" height="37" name="image_operate_68481337755557771" alt="WebDriver拾级而上路之十三调用JavaScript" title="WebDriver拾级而上路之十三调用JavaScript" style="margin:0px; padding:0px; border:0px; list-style:none"></a> </div> <div style="color:rgb(73,73,73); font-family:simsun; font-size:14px; line-height:21px; background-color:rgb(202,207,207)"> <div>package com.test;</div> <div> </div> <div>import org.openqa.selenium.JavascriptExecutor;</div> <div>import org.openqa.selenium.WebDriver;</div> <div>import org.openqa.selenium.chrome.ChromeDriver;</div> <div> </div> <div>public class Test_JsExecutor {</div> <div>public static void main(String[] args) {</div> <div>String url = "http://www.51.com";</div> <div>//打开chrome</div> <div>WebDriver dr = new ChromeDriver();</div> <div>String js = "var user_input = document.getElementByIdx_x_x_x(\"passport_51_user\").title;return user_input;";</div> <div>String title =(String)((JavascriptExecutor)dr).executeScript( js); </div> <div>System.out.println(title);</div> <div> </div> <div>dr.quit();</div> <div>}</div> <div>}</div> 输出结果为：用户名/彩虹号/邮箱 其他用例： JavascriptExecutor js = (JavascriptExecutor) driver; js.executeScript("(function(){ inventoryGridMgr.setTableFieldValue('"+ inventoryId + "','" + fieldName + "','"+ value + "'); } )()" ); </div>