此例为上传图片：

ublic class up {

    public  static  void main(String[] args) throws Exception {

        //驱动设置
        System.setProperty("webdriver.chrome.driver", "D:\\driver\\chromedriver.exe");
        WebDriver driver = new ChromeDriver ();
        driver.manage ().window ().maximize ();
        driver.get ( "http://www.baidu.com" );

        //指定图片路径
        StringSelection ss=new StringSelection ( " C:\\Users\\quelingfei\\Desktop\\2018111601.jpg");

        //图片路径复制到剪贴板
        Toolkit.getDefaultToolkit ().getSystemClipboard ().setContents ( ss,null );
        System.out.println ("selection" + ss);

        //点击相机按钮
        driver.findElement ( By.xpath ("//*/span[@class='soutu-btn']") ).click ();

        //点击本地上传图片
        driver.findElement ( By.xpath ("//*/input[@class='upload-pic']") ).click ();

        Thread.sleep ( 2000 );

        Robot robot = new Robot ( );
        Thread.sleep ( 2000 );
        robot.keyPress ( KeyEvent.VK_ENTER );

        // 释放回车
        robot.keyRelease(KeyEvent.VK_ENTER);

        // 按下 CTRL+V
        robot.keyPress(KeyEvent.VK_CONTROL);
        robot.keyPress(KeyEvent.VK_V);

        // 释放 CTRL+V
        robot.keyRelease(KeyEvent.VK_CONTROL);
        robot.keyRelease(KeyEvent.VK_V);
        Thread.sleep(1000);

        // 点击回车 Enter
        robot.keyPress(KeyEvent.VK_ENTER);
        robot.keyRelease(KeyEvent.VK_ENTER);

        driver.quit ();
    }
}