我正在尝试使用selenium的getAttribute
函数获取属性值,但得到NullPointerException
。可能的原因似乎是属性值开头的双引号。
有人可以建议其他选择吗?
Selenium Java 命令:
driver.findElement(By.xpath("//tbody[@role='alert']/tr[@class='error']")).getAttribute("data-suppression-reason");
HTML 代码片段:
<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>
堆栈跟踪:
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)
最佳答案
测试了你的 xpath,你的 html 有 2 个问题。
关闭您的
tr
元素。 html 可能没问题,但 xpath 需要格式良好的 xml属性值上的双引号也将被视为格式错误的 xml。请避开他们,例如使用
"
代替""
关于java - Selenium WebDriver - 尝试使用 "java.lang.NullPointerException"获取属性值时获取 "getAttribute",我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/41164352/