执行 selenium 程序时出错答案

【问题标题】：Error while executing the selenium program执行 selenium 程序时出错
【发布时间】：2015-11-09 01:49:37
【问题描述】：

package Com.Automation;


import java.util.concurrent.TimeUnit;

import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;

import org.openqa.selenium.firefox.FirefoxDriver;

public class Second_Findelements {

    public static void main(String[] args) {
        WebDriver driver=new FirefoxDriver();
        driver.manage().timeouts().implicitlyWait(50, TimeUnit.SECONDS);
        driver.get("http://www.google.com");
        System.out.println(driver.getCurrentUrl());
        System.out.println(driver.getTitle());

                driver.findElement(By.name("q")).sendKeys("gmail");
        driver.findElement(By.xpath("//a[(text()='Gmail - Google']")).click();
        driver.quit();
    }
}

错误是：

Exception in thread "main" org.openqa.selenium.InvalidSelectorException:
 The given selector //a[(text()='Gmail - Google'] is either invalid or does not result in a WebElement. The following error occurred:

 InvalidSelectorError: Unable to locate an element with the xpath expression //a[(text()='Gmail - Google'] because of the following error:

SyntaxError: The expression is not a legal expression.
    Command duration or timeout: 30 milliseconds
    For documentation on this error, please visit: 

http://seleniumhq.org/exceptions/invalid_selector_exception.html
    Build info: version: '2.48.2', revision: '41bccdd', time: '2015-10-09 19:55:52'
    System info: host: 'shaheena-PC', ip: '100.68.111.156', os.name: 'Windows 7', os.arch: 'amd64', os.version: '6.1', java.version: '1.8.0_51'
    Driver info: org.openqa.selenium.firefox.FirefoxDriver
    Capabilities [{applicationCacheEnabled=true, rotatable=false, handlesAlerts=true, databaseEnabled=true, version=43.0, platform=WINDOWS, nativeEvents=false, acceptSslCerts=true, webStorageEnabled=true, locationContextEnabled=true, browserName=firefox, takesScreenshot=true, javascriptEnabled=true, cssSelectorsEnabled=true}]
    Session ID: 62a7b699-fabb-4742-82dc-6f7785f33275
    *** Element info: {Using=xpath, value=//a[(text()='Gmail - Google']}
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
        at java.lang.reflect.Constructor.newInstance(Unknown Source)
        at org.openqa.selenium.remote.ErrorHandler.createThrowable(ErrorHandler.java:206)
        at org.openqa.selenium.remote.ErrorHandler.throwIfResponseFailed(ErrorHandler.java:158)
        at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:647)
        at org.openqa.selenium.remote.RemoteWebDriver.findElement(RemoteWebDriver.java:353)
        at org.openqa.selenium.remote.RemoteWebDriver.findElementByXPath(RemoteWebDriver.java:490)
        at org.openqa.selenium.By$ByXPath.findElement(By.java:361)
        at org.openqa.selenium.remote.RemoteWebDriver.findElement(RemoteWebDriver.java:345)
        at Com.Automation.Second_Findelements.main(Second_Findelements.java:23)
    Caused by: org.openqa.selenium.InvalidSelectorException: The given selector //a[(text()='Gmail - Google'] is either invalid or does not result in a WebElement. The following error occurred:
    InvalidSelectorError: Unable to locate an element with the xpath expression //a[(text()='Gmail - Google'] because of the following error:
    SyntaxError: The expression is not a legal expression.
    For documentation on this error, please visit: http://seleniumhq.org/exceptions/invalid_selector_exception.html
    Build info: version: '2.48.2', revision: '41bccdd', time: '2015-10-09 19:55:52'
    System info: host: 'shaheena-PC', ip: '100.68.111.156', os.name: 'Windows 7', os.arch: 'amd64', os.version: '6.1', java.version: '1.8.0_51'
    Driver info: driver.version: unknown
        at <anonymous class>.FirefoxDriver.annotateInvalidSelectorError_(file:///C:/Users/shaheena/AppData/Local/Temp/anonymous3401694128124177427webdriver-profile/extensions/fxdriver@googlecode.com/components/driver-component.js:10633)
        at <anonymous class>.FirefoxDriver.prototype.findElementInternal_(file:///C:/Users/shaheena/AppData/Local/Temp/anonymous3401694128124177427webdriver-profile/extensions/fxdriver@googlecode.com/components/driver-component.js:10664)
        at <anonymous class>.FirefoxDriver.prototype.findElement(file:///C:/Users/shaheena/AppData/Local/Temp/anonymous3401694128124177427webdriver-profile/extensions/fxdriver@googlecode.com/components/driver-component.js:10668)
        at <anonymous class>.DelayedCommand.prototype.executeInternal_/h(file:///C:/Users/shaheena/AppData/Local/Temp/anonymous3401694128124177427webdriver-profile/extensions/fxdriver@googlecode.com/components/command-processor.js:12534)
        at <anonymous class>.DelayedCommand.prototype.executeInternal_(file:///C:/Users/shaheena/AppData/Local/Temp/anonymous3401694128124177427webdriver-profile/extensions/fxdriver@googlecode.com/components/command-processor.js:12539)
        at <anonymous class>.DelayedCommand.prototype.execute/<(file:///C:/Users/shaheena/AppData/Local/Temp/anonymous3401694128124177427webdriver-profile/extensions/fxdriver@googlecode.com/components/command-processor.js:12481)

【问题讨论】：

那么你的问题是什么？你做了一个代码和错误转储，然后走开了。这不是 SO 的工作方式。你读过错误吗？它说了什么？你用谷歌搜索错误吗？你发现了什么？你是怎么解决的？
实际上我的问题不是 id 我试图使用 text() ， contains() 但它不起作用
我正在尝试传递电子邮件，例如：driver.findElement(By.xpath("//*[text()='Enter your email']")).sendKeys("shaheenashaik03@gmail .com");但它显示错误
你回答了我的六个问题之一。您需要花一些时间阅读和研究错误。网上已经有很多类似的信息。去找它，如果你有一个更具体的问题回来。
你写错了xpath。对 xpath = "//a[text()='Gmail - Google']" 你写了额外的 "("

标签： java selenium webdriver

【解决方案1】：

你写错了xpath：

//a[(text()='Gmail - Google']

真正的 xpath 是：

//a[text()='Gmail - Google']

你已经添加了额外的“（”

如果要使用包含

//a[contains(text(),'Gmail')]

在上面的 xpath 中使用唯一文本而不是 Gmail

【讨论】：