Selenium清空列數據

org.openqa.selenium.InvalidElementStateException: invalid element state: Element must be user-editable in order to clear it.

注意：（1）報上邊的錯誤，原因是不是input框，不能進行clear和delete操作，要定位到input

           （2）clear清空數據，value值變為0；要想為空，用delete

rowList.get(i).sendKeys(Keys.chord(Keys.CONTROL, "a"));
rowList.get(i).sendKeys(Keys.DELETE);

public class TestCase  {
    public static void main(String[] args) {
        // 初始化
        WebDriver driver = new ChromeDriver();
        driver.get("http://demo.jeecms.com/jeeadmin/jeecms/index.do#/channel/list");//訪問jeecms網站
        driver.findElement(By.xpath("//*[@id=\"app\"]/div/div[1]/div/div[1]/input")).clear();//清除用戶名輸入框
        driver.findElement(By.xpath("//*[@id=\"app\"]/div/div[1]/div/div[1]/input")).sendKeys("test");//輸入用戶名
        driver.findElement(By.xpath("//*[@id=\"app\"]/div/div[1]/div/div[2]/input")).clear();//清除秘密輸入框
        driver.findElement(By.xpath("//*[@id=\"app\"]/div/div[1]/div/div[2]/input")).sendKeys("test");//輸入密碼
        driver.findElement(By.xpath("//*[@id=\"login\"]")).click();//點擊“登錄”
        driver.manage().window().maximize();//放大頁面
        driver.findElement(By.xpath("//*[@id=\"aside\"]/ul/li[3]/span")).click();//點擊"欄目管理"
        List<WebElement>  roleName=driver.findElements(By.xpath("//*[@id=\"app\"]/div/div[1]/div/section/div[2]/div[2]/div[3]/table/tbody/tr/td[5]/div/div/div/input"));
        for (int i=0;i<roleName.size();i++){
 roleName.get(i).clear();         }

    }
}