【Selenium专题】 FAQ_对象识别_Compound class names are not supported

测试代码

    public void login(){

        WebDriver driver = new ChromeDriver();

        driver.get("http://IP:Port/client/login.html");

        driver.findElement(By.id("username")).sendKeys("admin");

        driver.findElement(By.id("pwd")).sendKeys("111111");

        driver.findElement(By.className("btn btn-primary")).click();

    }

报错信息

Starting ChromeDriver (v2.9.248315) on port 8850

Starting ChromeDriver (v2.9.248315) on port 26269

Exception in thread "main" org.openqa.selenium.IllegalLocatorException: Compound class names are not supported. Consider searching for one class name and filtering the results.

Build info: version: '2.23.1', revision: '17143', time: '2012-06-08 18:59:28'

System info: os.name: 'Windows 7', os.arch: 'x86', os.version: '6.1', java.version: '1.7.0_60'

Driver info: driver.version: unknown

    at org.openqa.selenium.By.className(By.java:131)

    at omstest.find.main(find.java:52)

问题分析

WerbDriver中by.className() 不支持含有空格的class名称，第1行代码中，className"btn btn-primary"中包含空格，引发报错。

解决方案 

1. 使用通配符，修改className,使其不包含空格
2. 更换其他属性识别