消息“org.openqa.selenium.InvalidSelectorException:无效选择器：无法使用sendKeys定位XPath表达式的元素”

Question

我在使用Selenium上传文件时遇到问题。由于浏览按钮没有输入标记，我无法使用sendKeys（）函数传递路径。它是用角写的。

以下是浏览按钮元素：

<a id="attachmentUpload-browse0" name="attachmentUpload-browse0" ng-click="clickBrowse($index)" class="btn-pri" xpath="1"></a>

我确实在源代码中的上面代码的正下方找到了一个输入标记，但在尝试使用. sendKeys（）时遇到了错误。

<input type="file" id="attachmentUpload-file0" name="attachmentUpload-file0" fileread="$parent.attachments[$index].fileData" class="attachmentUpload-inputfile ng-isolate-scope" onchange="angular.element(this).scope().onFileChange(this)" style="" xpath="1">

编辑：使用时出错。sendKeys（）到输入标记

Exception in thread "main" org.openqa.selenium.InvalidSelectorException: invalid selector: Unable to locate an element with the xpath expression //input[@id="attachmentUpload-file0"]// because of the following error:
SyntaxError: Failed to execute 'evaluate' on 'Document': The string '//input[@id="attachmentUpload-file0"]//' is not a valid XPath expression.
*** Element info: {Using=xpath, value=//input[@id="attachmentUpload-file0"]//}
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at org.openqa.selenium.remote.ErrorHandler.createThrowable(ErrorHandler.java:214)
at org.openqa.selenium.remote.ErrorHandler.throwIfResponseFailed(ErrorHandler.java:166)
at org.openqa.selenium.remote.http.JsonHttpResponseCodec.reconstructValue(JsonHttpResponseCodec.java:40)
at org.openqa.selenium.remote.http.AbstractHttpResponseCodec.decode(AbstractHttpResponseCodec.java:80)
at org.openqa.selenium.remote.http.AbstractHttpResponseCodec.decode(AbstractHttpResponseCodec.java:44)
at org.openqa.selenium.remote.HttpCommandExecutor.execute(HttpCommandExecutor.java:158)
at org.openqa.selenium.remote.service.DriverCommandExecutor.execute(DriverCommandExecutor.java:83)
at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:545)
at org.openqa.selenium.remote.RemoteWebDriver.findElement(RemoteWebDriver.java:319)
at org.openqa.selenium.remote.RemoteWebDriver.findElementByXPath(RemoteWebDriver.java:421)
at org.openqa.selenium.By$ByXPath.findElement(By.java:361)
at org.openqa.selenium.remote.RemoteWebDriver.findElement(RemoteWebDriver.java:311)
at com.ibm.esh.o2c.art.Tester.runTest(Tester.java:61)
at com.ibm.esh.o2c.art.Tester.main(Tester.java:70)

为attachmentUpload-Browse0使用标签时出错：

Exception in thread "main" org.openqa.selenium.WebDriverException: unknown error: cannot focus element

Answer 1

此错误消息...

org.openqa.selenium.InvalidSelectorException: invalid selector: Unable to locate an element with the xpath expression //input[@id="attachmentUpload-file0"]// because of the following error:
SyntaxError: Failed to execute 'evaluate' on 'Document': The string '//input[@id="attachmentUpload-file0"]//' is not a valid XPath expression.

...意味着您的XPath表达式无效。

您可以使用以下代码行：

driver.findElement(By.xpath("//input[@id='attachmentUpload-file0']")).sendKeys("test");