WebDriver中不支持复合类名称错误

Question

我有一种方法来计算元素的数量divs并返回它们的数量.

 public int getNumberOfOpenBets() {

     openBetsSlip = driver.findElement(By.id("form_open_bets"));
     openBets = openBetsSlip.findElements(By.className(" cashout_noCash"));
     return openBets.size();
 }

这是页面源

<form id="form_open_bets" method="post" name="form_open_bets">
    <input type="hidden" value="" name="action">
    <input type="hidden" value="" name="bet_id">
    <input type="hidden" value="" name="cashout_price">
    <input id="target_page" type="hidden" value="" name="target_page">
    <div id="By.id" class="slipWrapper ">
        <div id="openBets_header"></div>
        <div id="cashout_1626" class=" cashout_noCash">
            <div id="cashout_1625" class=" cashout_noCash">
                <div id="cashout_1615" class=" cashout_noCash">
                    <div id="cashout_1614" class=" cashout_noCash">
                        <div id="cashout_1613" class=" cashout_noCash">
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>
</form>

WebDriver抛出以下错误:不支持复合类名.考虑搜索一个类名并过滤结果或使用CSS选择器.

org.openqa.selenium.InvalidSelectorException: Compound class names are not supported. Consider searching for one class name and filtering the results or use CSS selectors.
For documentation on this error, please visit: http://seleniumhq.org/exceptions/invalid_selector_exception.html
Build info: version: '2.31.0', revision: '1bd294d185a80fa4206dfeab80ba773c04ac33c0', time: '2013-02-27 13:51:26'
System info: os.name: 'Windows 7', os.arch: 'amd64', os.version: '6.1', java.version: '1.7.0_17'
Driver info: driver.version: unknown
    at org.openqa.selenium.By.className(By.java:131)
    at elements.betslip.Betslip.getNumberOfOpenBets(Betslip.java:136)
    at testSomething(SomethingTest.java:117)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)

编辑:

事实证明WerbDriver,不支持类名中的空格,omg.

你能帮助我CSS在这种情况下使用选择器来找到元素吗？

Answer 1

这完全符合预期.如果您的类名包含空格,WebDriver会将其视为"复合选择器".您可以删除By.className()定位器中的空间,该空间仍应找到您要查找的元素; 或者你可以通过CSS选择器来寻找,使用类似的东西By.cssSelector(".cashout_noCash"),为类似的功能提供更多的灵活性.这正是异常消息所说的.

Answer 2

您可以通过在它们之间不留任何间隙来包括复合类名称选择器.

例如,如果你div是:

<div class="k-calendar-container k-popup k-group k-reset"></div>

然后你的selector意志是:

driver.findElement(By.cssSelector("k-calendar-container.k-popup.k-group.k-reset"));