Question

我在“显式等待”中遇到了麻烦，但它并不总是有效。他们会随机失败，我不确定为什么。我正在击中找不到元素或陈旧元素。我该怎么做才能使它们更可靠？

public class FrameRegisterAccount extends BasicTests
{
// Generates Email
String userName = ""+(int)(Math.random()*Integer.MAX_VALUE);
String emailID = "Otto"+userName+"@gmail.com";

@Test (priority=1)
public void NewAccount() throws Exception {
    WebDriverWait wait = new WebDriverWait(driver, 15, 2500L);
    WebElement signButton = wait.until(ExpectedConditions.visibilityOfElementLocated(By.xpath("//a[@class='button-sign']")));
    signButton.click();
    log.info("New Account Creation Screen Opened");

    // Fill out Form
    WebElement nameField = wait.until(ExpectedConditions.visibilityOfElementLocated(By.name("first_name")));
    nameField.sendKeys("Otto");

    driver.findElement(By.name("last_name")).sendKeys("Mation Tester");
    driver.findElement(By.name("phone_number")).sendKeys("555-555-3231");
    driver.findElement(By.name("listings")).sendKeys("4");

    // Enter Email and Password
    driver.findElement(By.xpath("//input[@name='email']")).clear();
    driver.findElement(By.xpath("//input[@name='email']")).sendKeys(emailID);
    driver.findElement(By.xpath("//input[@name='password']")).clear();
    driver.findElement(By.xpath("//input[@name='password']")).sendKeys("password");

    // Click buttons
    driver.findElement(By.xpath("//div[@class='input input-term']//div[@class='checkbox-icon']")).click();
    driver.findElement(By.xpath("//span[contains(text(),'Sign Up')]")).click();
    Thread.sleep(3000);
    log.info("New Account Created");
}

@Test (priority=2)
public void ChangePassword() {

    // Wait for Dashboard Button
    WebDriverWait wait = new WebDriverWait(driver, 15, 2500L);
    WebElement dashButton = wait.until(ExpectedConditions.elementToBeClickable(By.xpath("//button[contains(@class,'success-dashboard')]")));
    dashButton.click();
    log.info("Go to Dashboard Button Pressed");

    // Change Password
    WebElement proNameX = wait.until(ExpectedConditions.elementToBeClickable(By.xpath("//div[@id='sidebar-top-item']")));
    proNameX.click();
    WebElement changePass = wait.until(ExpectedConditions.visibilityOfElementLocated(By.xpath("//div[@id='nf-change-password-btn']")));
    changePass.click();

    //driver.findElement(By.xpath("//div[@id='nf-change-password-btn']")).click();
    driver.findElement(By.name("old_password")).sendKeys("password");
    driver.findElement(By.name("new_password")).sendKeys("wordpass");
    driver.findElement(By.name("new_password2")).sendKeys("wordpass");
    driver.findElement(By.xpath("//button[@type='button']")).click();
    log.info("Password Change Completed");
}

Stacktrace：

org.openqa.selenium.StaleElementReferenceException: 
stale element reference: element is not attached to the page document
  (Session info: headless chrome=72.0.3626.109)
  (Driver info: chromedriver=2.46.628388 (4a34a70827ac54148e092aafb70504c4ea7ae926),platform=Linux 4.14.88-88.76.amzn2.x86_64 x86_64) (WARNING: The server did not provide any stacktrace information)
Command duration or timeout: 0 milliseconds
For documentation on this error, please visit: https://www.seleniumhq.org/exceptions/stale_element_reference.html
Build info: version: '3.141.59', revision: 'e82be7d358', time: '2018-11-14T08:17:03'
System info: host: 'ip-172-31-36-12.us-west-2.compute.internal', ip: '172.31.36.12', os.name: 'Linux', os.arch: 'amd64', os.version: '4.14.88-88.76.amzn2.x86_64', java.version: '1.8.0_131'
Driver info: org.openqa.selenium.chrome.ChromeDriver
Capabilities {acceptInsecureCerts: false, acceptSslCerts: false, applicationCacheEnabled: false, browserConnectionEnabled: false, browserName: chrome, chrome: {chromedriverVersion: 2.46.628388 (4a34a70827ac54..., userDataDir: /tmp/.org.chromium.Chromium...}, cssSelectorsEnabled: true, databaseEnabled: false, goog:chromeOptions: {debuggerAddress: localhost:42199}, handlesAlerts: true, hasTouchScreen: false, javascriptEnabled: true, locationContextEnabled: true, mobileEmulationEnabled: false, nativeEvents: true, networkConnectionEnabled: false, pageLoadStrategy: normal, platform: LINUX, platformName: LINUX, proxy: Proxy(), rotatable: false, setWindowRect: true, strictFileInteractability: false, takesHeapSnapshot: true, takesScreenshot: true, timeouts: {implicit: 0, pageLoad: 300000, script: 30000}, unexpectedAlertBehaviour: ignore, unhandledPromptBehavior: ignore, version: 72.0.3626.109, webStorageEnabled: true}
Session ID: 1a448c188bc68362fa3dc7858ee770b3
    at registerAuto.FrameRegisterAccount.ChangePassword(FrameRegisterAccount.java:57)

堆栈2：

org.openqa.selenium.TimeoutException：预期条件失败：等待元素可单击：By.xpath：// div [@ id ='sidebar-top-item']（尝试15秒，间隔2500毫秒）构建信息：版本：'3.141.59'，修订版本：'e82be7d358'，时间：'2018-11-14T08：17：03' 系统信息：主机：'ip-172-31-36-12.us-west-2.compute.internal'，ip：'172.31.36.12'，操作系统名称：'Linux'，os.arch：'amd64' ，os.version：“ 4.14.88-88.76.amzn2.x86_64”，java.version：“ 1.8.0_131” 驱动程序信息：org.openqa.selenium.chrome.ChromeDriver 功能{acceptInsecureCerts：false，acceptSslCerts：false，applicationCacheEnabled：false，browserConnectionEnabled：false，browserName：chrome，chrome：{chromedriverVersion：2.46.628388（4a34a70827ac54 ...，userDataDir：/tmp/.org.chromium.Chromium ... }，cssSelectorsEnabled：true，databaseEnabled：false，goog：chromeOptions：{debuggerAddress：localhost：42977}，handlesAlerts：true，hasTouchScreen：false，javascriptEnabled：true，locationContextEnabled：true，mobileEmulationEnabled：false，nativeEvents：true，networkConnectionEnabled：false， pageLoadStrategy：正常，平台：LINUX，平台名称：LINUX，代理：Proxy（），可旋转：false，setWindowRect：true，strictFileInteractability：false，takesHeapSnapshot：true，takesScreenshot：true，超时：{隐式：0，pageLoad：300000，脚本：30000}，unexpantedAlertBehaviour：忽略，unhandledPromptBehavior：忽略，版本：72.0.3626.109，webStorageEnabled：true} 会话ID：7b255ab6a2cf5b58cf3919904e703b2a 完全没有StagingAutomation.FrameRegisterAccountStaging.ChangePassword（FrameRegisterAccountStaging.java:55）

Answer 1

StaleElementReference异常在您尝试交互的元素不再在dom中或已过时时出现。因此，您需要刷新页面，然后再次获取该元素，它将起作用。

因此，请在要获取异常的元素之前添加AppContainer.js: class CompanyNavWrapper extends Component { constructor(props){ super(props); } render(){ return ( <CompanyNavigator screenProps={{ rootNavigation: this.props.navigation}} /> ) } } const CompanyNavigator = createStackNavigator({ CompanyList: { screen: CompanyList, navigationOptions: ({ navigation }) => ({ title: "Companies" }) }, PartnershipEdit: { screen: PartnershipEdit, navigationOptions: ({ navigation }) => ({ title: "Partnership Edit", headerMode: 'screen' }) } }, { headerMode: 'screen' } ); export const SignInNavigator = createDrawerNavigator({ Menu: { screen: Menu, navigationOptions: { title: "Menu", } }, PartnershipList: { screen: PartnershipList, navigationOptions: ({ navigation }) => ({ title: "Partnerships", headerLeft: <Icon name="three-bars" size={35} onPress={ () => navigation.navigate('DrawerOpen') } /> }) }, Company: { screen: CompanyNavWrapper, navigationOptions:{ title:'Companies' } } }, { contentComponent:(props) => ( <View style={{flex:1}}> <SafeAreaView forceInset={{ top: 'always', horizontal: 'never' }}> <DrawerItems {...props} /> <TouchableHighlight onPress={async () => { await deleteUser(); NavigationService.navigate('Auth'); }} underlayColor='#ffffff'> <Text style={{marginLeft: 15, marginTop: 10, color: '#000000', fontWeight: 'bold', backgroundColor: '#ffffff'}}>Logout</Text> </TouchableHighlight> </SafeAreaView> </View> ), drawerOpenRoute: 'DrawerOpen', drawerCloseRoute: 'DrawerClose', drawerToggleRoute: 'DrawerToggle' },{ headerMode: 'float', navigationOptions: ({ navigation }) => ({ headerLeft: <Icon name="three-bars" size={35} onPress={ () => navigation.navigate('DrawerOpen') } />, }) } ); export const mainNav = createStackNavigator({ DrawerStack: { screen: SignInNavigator } }, { headerMode: 'float', navigationOptions: ({navigation}) => ({ headerLeft: <Icon name="three-bars" size={18} style={{paddingLeft: 10}} onPress={ () => { navigation.state.index == 0 ? navigation.navigate('DrawerOpen') : navigation.navigate('DrawerClose') } } />, headerStyle: { backgroundColor: '#ffffff', height: 20 }, headerTitleStyle: { color: '#000000', textAlign: 'center', alignSelf: 'center', flex: 0.85 }, headerRight: <View/> }) } ) export const SignedOutNavigator = createStackNavigator( { Login: { screen: Login }, Register: { screen: Register }, ForgotPassword: {screen: ForgotPassword }, ForgotPasswordReset: {screen: ForgotPasswordReset } }, { headerMode: 'none', cardStyle: { backgroundColor: 'transparent' } } ); export const AppNavigator = createSwitchNavigator( { AuthLoading: AuthLoadingScreen, App: mainNav, Auth: SignedOutNavigator }, { initialRouteName: 'AuthLoading', } ); const AppContainer = createAppContainer(AppNavigator); export default AppContainer; app.js: render() { if (!this.state.isLoadingComplete && !this.props.skipLoadingScreen) { return ( <AppLoading startAsync={this._loadResourcesAsync} onError={this._handleLoadingError} onFinish={this._handleFinishLoading} /> ); } else { return ( <View style={styles.container}> {Platform.OS === 'ios' && <StatusBar barStyle="default" />} <Provider store={store}> <AlertProvider> <AppContainer ref={navigatorRef => { NavigationService.setTopLevelNavigator(navigatorRef); }} /> </AlertProvider> </Provider> </View> ); } }行代码，然后对该元素进行操作，即可正常工作。

Answer 2

此代码出现“没有这样的元素：无法找到元素”错误。它找不到“ // div [@ class ='airgms-input airgms-input-text'] // input [@ type ='text']” xpath。我尝试了不同的xpath。

@Test(priority = 1)
public void LogIns() {
    driver.findElement(By.id("login-email")).sendKeys("admin.test@gmail");
    driver.findElement(By.id("login-password")).sendKeys("password");
    driver.findElement(By.xpath("//button[@href='javascript:void(0);']")).click();
    log.info("Log in Successful");
}

@Test(priority = 2)
public void LoadInboxTab() throws Exception {
    WebDriverWait wait = new WebDriverWait(driver, 20, 2000L);
    WebElement InboxTab = wait.until(ExpectedConditions.elementToBeClickable(By.xpath("//div[@class='team-member-sections']//div[1]")));
    InboxTab.click();
    Thread.sleep(3000);
    log.info("Inbox Opened Successfully");

Stacktrace

org.openqa.selenium.NoSuchElementException：没有这样的元素：无法找到元素：{“ method”：“ xpath”，“ selector”：“ // div [@ class ='airgms-input airgms-input-text'] // input [@ type ='text ']“} （会议信息：headless chrome = 72.0.3626.109）（驱动程序信息：chromedriver = 2.46.628388（4a34a70827ac54148e092aafb70504c4ea7ae926），平台= Linux 4.14.88-88.76.amzn2.x86_64 x86_64）（警告：服务器未提供任何堆栈跟踪信息）命令持续时间或超时：0毫秒有关此错误的文档，请访问：https://www.seleniumhq.org/exceptions/no_such_element.html 构建信息：版本：'3.141.59'，修订版本：'e82be7d358'，时间：'2018-11-14T08：17：03' 系统信息：主机：'ip-172-31-36-12.us-west-2.compute.internal'，ip：'172.31.36.12'，操作系统名称：'Linux'，os.arch：'amd64' ，os.version：“ 4.14.88-88.76.amzn2.x86_64”，java.version：“ 1.8.0_131” 驱动程序信息：org.openqa.selenium.chrome.ChromeDriver 功能{acceptInsecureCerts：false，acceptSslCerts：false，applicationCacheEnabled：false，browserConnectionEnabled：false，browserName：chrome，chrome：{chromedriverVersion：2.46.628388（4a34a70827ac54 ...，userDataDir：/tmp/.org.chromium.Chromium ... }，cssSelectorsEnabled：true，databaseEnabled：false，goog：chromeOptions：{debuggerAddress：localhost：40837}，handlesAlerts：true，hasTouchScreen：false，javascriptEnabled：true，locationContextEnabled：true，mobileEmulationEnabled：false，nativeEvents：true，networkConnectionEnabled：false， pageLoadStrategy：正常，平台：LINUX，平台名称：LINUX，代理：Proxy（），可旋转：false，setWindowRect：true，strictFileInteractability：false，takesHeapSnapshot：true，takesScreenshot：true，超时：{隐式：0，pageLoad：300000，脚本：30000}，unexpantedAlertBehaviour：忽略，unhandledPromptBehavior：忽略，版本：72.0.3626.109，webStorageEnabled：true} 会话ID：d31d6d2119c6586877f2f9ba5e73ee0d ***元素信息：{使用= xpath，值= // div [@ class ='airgms-input airgms-input-text'] // input [@ type ='text']} 完全没有StagingAutomation.FramePriceAvailabilityStaging.RevertPriceAvailandChanges（FramePriceAvailabilityStaging.java:122）

等待结果并不总是相同

2 个答案: