我正在尝试使用selenium的getAttribute
函数获取属性值,但获取NullPointerException
。可能的原因似乎是属性值开头的双引号。
有人可以提出其他选择吗?
Selenium Java命令:
driver.findElement(By.xpath("//tbody[@role='alert']/tr[@class='error']")).getAttribute("data-suppression-reason");
HTML code snippet:
<tbody role="alert" aria-live="polite" aria-relevant="all">
<tr class="odd">
<tr class="even">
<tr class="error" data-suppression-reason=""Email" is empty.">
<tr class="error" data-suppression-reason=""Email" is empty.">
<tr class="odd">
</tbody>
堆栈追踪:
java.lang.NullPointerException
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.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:84)
at org.testng.internal.Invoker.invokeMethod(Invoker.java:714)
at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:901)
at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1231)
at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:127)
at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:111)
at org.testng.TestRunner.privateRun(TestRunner.java:767)
at org.testng.TestRunner.run(TestRunner.java:617)
at org.testng.SuiteRunner.runTest(SuiteRunner.java:334)
at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:329)
at org.testng.SuiteRunner.privateRun(SuiteRunner.java:291)
at org.testng.SuiteRunner.run(SuiteRunner.java:240)
at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86)
at org.testng.TestNG.runSuitesSequentially(TestNG.java:1224)
at org.testng.TestNG.runSuitesLocally(TestNG.java:1149)
at org.testng.TestNG.run(TestNG.java:1057)
at org.testng.remote.AbstractRemoteTestNG.run(AbstractRemoteTestNG.java:132)
at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:236)
at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:81)
答案 0 :(得分:1)
用你的html测试了你的xpath,2个问题。
关闭tr
个元素。它可能适用于html但xpath期望格式良好的xml
属性值的双引号也将被视为格式错误的xml。请逃避他们,例如使用"
代替""
答案 1 :(得分:1)
试试这个
List <WebElement> trElement = driver.findElements(By.xpath("//tbody[@role='alert']/tr[@class='error']"));
for(WebElement tr_ele : trElement){
sysout(tr_ele.getAttribute("data-suppression-reason"));
}
这应该使用class = Error打印每个元素的属性内容。考虑你的xpath是否合适。如果不工作,那么你需要调查你的Element xpath。
或者您可以在上面的代码中尝试以下定位器。
By.xpath("//td[@class='error']")
By.Classname("error")
css = "td[class='error']"
希望这会有所帮助