正在获取org.openqa.selenium.NoSuchElementException：无此类元素：无法找到元素：{“ method”：“ xpath”，“ selector”：错误

如何解决正在获取org.openqa.selenium.NoSuchElementException：无此类元素：无法找到元素：{“ method”：“ xpath”，“ selector”：错误

我正在做自动化测试，并且是该领域的新手。我收到如下错误：

“ org.openqa.selenium.NoSuchElementException：无此类元素：无法找到元素：{“ method”：“ xpath”，“ selector”：“

如果条件失败。 else if和else部分没有得到执行。

下面是对象类：

公共类createNewItemObjects扩展了BaseClass {

CommonActions commonActions = new CommonActions();
ReadAndWriteProperties readwriteprop = new ReadAndWriteProperties();

int totalItems = commonActions.getExcelRowNumbers(readwriteprop.getCompletePropertyCreationExcelPath(),readwriteprop.getItemsMenusTextDataSheetName());
static int i = 0;


//Constructor to initialize all web elements located by @FindBy annotation.
public createNewItemObjects(){
    PageFactory.initElements(driver,this);
}

//'New Item' button
@FindBy(xpath = "//input[@name='new00N1U000006qwz9']")
public WebElement newItemBtn;

//'Item Record Type' DDB
@FindBy(xpath = "//select[@id='p3']")
WebElement itemRecordTypeDDB;

//'Continue' button
@FindBy(xpath = "//input[@value='Continue']")
WebElement continueBtn;

//'Item Name' text box
@FindBy(xpath = "//input[@name='Name']")
WebElement itemNameTxtBox;

//'Revenue Classification' Lookup button
@FindBy(xpath = "//img[@alt='Revenue Classification Lookup (New Window)']")
WebElement revenueClassificationLookupBtn;

//'Search Frame' on Lookup window
@FindBy(xpath = "//frame[@name='searchFrame']")
WebElement searchFrameName;

//'Revenue Classification' search box
@FindBy(xpath = "//div[@class='pBody']//input[@id='lksrch']")
WebElement revenueClassificationsSearchBox;

//'Go' button
@FindBy(xpath = "//input[@title='Go!']")
WebElement goBtn;

//'Result Frame' on Lookup window
@FindBy(xpath = "//frame[@name='resultsFrame']")
WebElement resultFrame;

//Revenue Classification 'Food'
@FindBy(linkText = "Food")
WebElement revenueClassificationNameFoodLinkTxt;

//Revenue Classification 'Beverage'
@FindBy(linkText = "Beverage")
WebElement revenueClassificationNameBeverageLinkTxt;

//'Quantity Calculation' DDB
@FindBy(xpath = "//select[@name='00N1U000006qwzC']")
WebElement quantityCalculationDDB;

//'Save' button
@FindBy(xpath = "//td[@id='bottomButtonRow']//input[@name='save']")
WebElement saveItemBtn;

//'Save and New' button
@FindBy(xpath = "//td[@id='topButtonRow']//input[@name='save_new']")
WebElement saveAndNewItemBtn;

//Property name after clicking on 'Save' Item button
@FindBy(xpath = "//div[@id='Name_ileinner']")
WebElement itemNm;



//Method for clicking on 'New Item' button
public void newItemButton(){
    
    //Click on 'New Item' button.
    newItemBtn.click();
}

//Method for adding multiple Items
public void addNewItem(String selectItemRecordType,String itemName,String wildCard,String foodRevenueClassificationsName,String beverageRevenueClassificationsName,String quantityCalculationPerPerson){

    //Explicit wait to visible the Text
    commonActions.waitForVisibility(itemRecordTypeDDB);

    //Select Item Record Type from DDB
    Select chooseItemRecordType = new Select(itemRecordTypeDDB);
    chooseItemRecordType.selectByVisibleText(selectItemRecordType);

    //Click on 'Continue' button.
    continueBtn.click();

    //Enter 'Item' name.
    itemNameTxtBox.sendKeys(itemName);
    String enteredItemName = itemNameTxtBox.getAttribute("value");

    //Parent window id
    String parentWindow = driver.getWindowHandle();

    //Explicit wait to visible the Text
    commonActions.waitForVisibility(revenueClassificationLookupBtn);

    //Click on 'Revenue Classification' lookup button.
    revenueClassificationLookupBtn.click();

    //Explicit wait for 'Number of Windows'
    commonActions.waitForNumberOfWindows();

    //To get all window's ids
    Set<String> allWindows = driver.getWindowHandles();

    for(String childWindow:allWindows){

        if(!childWindow.equalsIgnoreCase(parentWindow)){

            //Focus on Child window.
            driver.switchTo().window(childWindow);

            //Focus on 'Search Frame' window.
            driver.switchTo().frame(searchFrameName);

            //Explicit wait to visible the Text
            commonActions.waitForVisibility(revenueClassificationsSearchBox);

            //Clear the text box
            revenueClassificationsSearchBox.clear();
            
            //Explicit wait to visible the Text
            commonActions.waitForVisibility(revenueClassificationsSearchBox);
            
            //Enter 'Wildcard' symbols
            revenueClassificationsSearchBox.sendKeys(wildCard);

            //Explicit wait to visible the Text
            commonActions.waitForVisibility(goBtn);

            //Click on 'Go' button.
            goBtn.click();

            //Focus on 'Main' window.
            driver.switchTo().defaultContent();

            //Explicit wait to visible the Text
            commonActions.waitForVisibility(resultFrame);

            //Focus on 'Result Frame' window.
            driver.switchTo().frame(resultFrame);

            //Explicit wait to visible the Text
            commonActions.waitForVisibility(revenueClassificationNameFoodLinkTxt);

            //Click on 'Food' Revenue Classification.
            if(enteredItemName.equalsIgnoreCase(foodRevenueClassificationsName)){
                revenueClassificationNameFoodLinkTxt.click();
            }
            //Click on 'Beverage' Revenue Classification.
            else if(enteredItemName.equalsIgnoreCase(beverageRevenueClassificationsName)){
                revenueClassificationNameBeverageLinkTxt.click();
            }
        }
    }

    //Focus on Parent window.
    driver.switchTo().window(parentWindow);

    //Select 'Quantity Calculation' from DDB.
    Select quantityCalculation = new Select(quantityCalculationDDB);
    quantityCalculation.selectByVisibleText(quantityCalculationPerPerson);

    if(i < totalItems)
    {
        saveAndNewItemBtn.click();
        i = i + 1;
    }
    else{
        saveItemBtn.click();
        commonActions.waitForVisibility(itemNm);
    }
}

//Method to compare with 'Available Item Record Types' static text 
public String getavailableItemRecordTypesTxtAfterSaveAndNewBtn(){
    String availableItemRecordTypesTxt = "";
    try{
        ***availableItemRecordTypesTxt = driver.findElement(By.xpath("//h3[@class='recordTypesHeading']")).getText();***
    }
    catch (NoSuchElementException exp){
        System.out.println("This is exception message " + exp);
    }
    return availableItemRecordTypesTxt;
}

//Method to compare with 'Property' name 
public String getitenNameAfterSaveButton(){
    String itenNameAfterSaveButton = driver.findElement(By.xpath("//div[@id='Name_ileinner']")).getText();
    return itenNameAfterSaveButton;
}

}

下面是测试类别：

公共类TC_CreateNewItem扩展了BaseClass {

CreateNewItemObjects createNewItem;
ReadAndWriteProperties readwriteprop = new ReadAndWriteProperties();
CommonActions commonActions;

@Test(priority = 1)
public void clickNewItemButton(){

    createNewItem = new CreateNewItemObjects();
    commonActions = new CommonActions();

    commonActions.waitForVisibility(createNewItem.newItemBtn);
    createNewItem.newItemButton();
}


@Test(priority = 2,dataProvider = "getNewItemCreationDataThroughExcel")
public void addNewItemsForProperty(String selectItemRecordTypeDDL,String itemNm,String wildCardSymbols,String revenueClassificationsNameFood,String revenueClassificationsNameBeverage,String quantityCalculationEachPerson,String availableItemRecordTypesText,String itenNameAfterSaveBttn){

    createNewItem = new createNewItemObjects();

    //Executing Object class method
    createNewItem.addNewItem(selectItemRecordTypeDDL,itemNm,wildCardSymbols,revenueClassificationsNameFood,revenueClassificationsNameBeverage,quantityCalculationEachPerson);

    //Checking whether 'Available Item Record Types' or 'Property Name' available or not
    try{
        ***if(createNewItem.getavailableItemRecordTypesTxtAfterSaveAndNewBtn().equalsIgnoreCase(availableItemRecordTypesText)){***
            Assert.assertTrue(true);
            logger().info("Item is created successfully.");
        }
        else if(createNewItem.getitenNameAfterSaveButton().equalsIgnoreCase(itenNameAfterSaveBttn)){
            Assert.assertTrue(true);
            logger().info("Item is created succussfully.");
        }
        else{
            logger().warn("Item creation is failed.");
            Assert.assertTrue(false);
        }
    }
    catch(Exception exp){
        exp.printStackTrace();
    }

}

//The 'DataProvider' annotation to fetch the data from excel.
@DataProvider
public Object[][] getNewItemCreationDataThroughExcel(){
    return ReadAndWriteExcel.getExcelData(readwriteprop.getCompletePropertyCreationExcelPath(),readwriteprop.getItemsMenusTextDataSheetName());
}

}

错误代码：

org.openqa.selenium.NoSuchElementException：否这样的元素：无法找到元素：{“ method”：“ xpath”，“ selector”：“ // h3 [@ class ='recordTypesHeading']”} （会议信息：chrome = 84.0.4147.125）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：'DATTAC-WIN8'，ip：'10 .75.8.53'，操作系统名称：'Windows 10'，os.arch：'amd64'，os.version：'10 .0'，java.version：'1.8 .0_161' 驱动程序信息：org.openqa.selenium.chrome.ChromeDriver 功能{acceptInsecureCerts：false，browserName：chrome，browserVersion：84.0.4147.125，chrome：{chromedriverVersion：84.0.4147.30（48b3e868b4cc0 ...，userDataDir：C：\ Users \ dattac \ AppData \ Loc ...}，goog：chromeOptions ：{debuggerAddress：localhost：63652}，javascriptEnabled：true，networkConnectionEnabled：false，pageLoadStrategy：none，平台：WINDOWS，platformName：WINDOWS，proxy：Proxy（），setWindowRect：true，strictFileInteractability：false，超时：{implicit：0， pageLoad：300000，脚本：30000}，unhandledPromptBehavior：关闭并通知，webauthn：virtualAuthenticators：true} 会话ID：6543ce8946621a7081bac5786eabaf73 ***元素信息：{Using = xpath，value = // h3 [@ class ='recordTypesHeading']} 在sun.reflect.NativeConstructorAccessorImpl.newInstance0（本机方法）处在sun.reflect.NativeConstructorAccessorImpl.newInstance（NativeConstructorAccessorImpl.java:62）在sun.reflect.DelegatingConstructorAccessorImpl.newInstance（DelegatingConstructorAccessorImpl.java:45）在java.lang.reflect.Constructor.newInstance（Constructor.java:423）在org.openqa.selenium.remote.http.W3CHttpResponseCodec.createException（W3CHttpResponseCodec.java:187）在org.openqa.selenium.remote.http.W3CHttpResponseCodec.decode（W3CHttpResponseCodec.java:122）在org.openqa.selenium.remote.http.W3CHttpResponseCodec.decode（W3CHttpResponseCodec.java:49）在org.openqa.selenium.remote.HttpCommandExecutor.execute（HttpCommandExecutor.java:158）在org.openqa.selenium.remote.service.DriverCommandExecutor.execute（DriverCommandExecutor.java:83）在org.openqa.selenium.remote.RemoteWebDriver.execute（RemoteWebDriver.java:552）在org.openqa.selenium.remote.RemoteWebDriver.findElement（RemoteWebDriver.java:323）在org.openqa.selenium.remote.RemoteWebDriver.findElementByXPath（RemoteWebDriver.java:428）在org.openqa.selenium.By $ ByXPath.findElement（By.java:353）在org.openqa.selenium.remote.RemoteWebDriver.findElement（RemoteWebDriver.java:315）在com.test.qa.pageobjects.CreateNewItemObjects.getavailableItemRecordTypesTxtAfterSaveAndNewBtn（CreateNewItemObjects.java:191）在com.test.qa.testcases.TC_CreateNewItem_0007.addNewItemsForProperty（TC_CreateNewItem_0007.java:36）在sun.reflect.NativeMethodAccessorImpl.invoke0（本机方法）处在sun.reflect.NativeMethodAccessorImpl.invoke（NativeMethodAccessorImpl.java:62）在sun.reflect.DelegatingMethodAccessorImpl.invoke（DelegatingMethodAccessorImpl.java:43）在java.lang.reflect.Method.invoke（Method.java:498）在org.testng.internal.MethodInvocationHelper.invokeMethod（MethodInvocationHelper.java:124）在org.testng.internal.Invoker.invokeMethod（Invoker.java:583）在org.testng.internal.Invoker.invokeTestMethod（Invoker.java:719）在org.testng.internal.Invoker.invokeTestMethods（Invoker.java:989）在org.testng.internal.TestMethodWorker.invokeTestMethods（TestMethodWorker.java:125）在org.testng.internal.TestMethodWorker.run（TestMethodWorker.java:109）在org.testng.TestRunner.privateRun（TestRunner.java:648）在org.testng.TestRunner.run（TestRunner.java:505）在org.testng.SuiteRunner.runTest（SuiteRunner.java:455）在org.testng.SuiteRunner.runSequentially（SuiteRunner.java:450）在org.testng.SuiteRunner.privateRun（SuiteRunner.java:415）在org.testng.SuiteRunner.run（SuiteRunner.java:364）在org.testng.SuiteRunnerWorker.runSuite（SuiteRunnerWorker.java:52）在org.testng.SuiteRunnerWorker.run（SuiteRunnerWorker.java:84）在org.testng.TestNG.runSuitesSequentially（TestNG.java:1208）在org.testng.TestNG.runSuitesLocally（TestNG.java:1137）在org.testng.TestNG.runSuites（TestNG.java:1049）在org.testng.TestNG.run（TestNG.java:1017）在org.testng.remote.AbstractRemoteTestNG.run（AbstractRemoteTestNG.java:132）在org.testng.remote.RemoteTestNG.initAndRun（RemoteTestNG.java:236）在org.testng.remote.RemoteTestNG.main（RemoteTestNG.java:81）

解决方法

由于未处理异常而失败。

每次致电此行：

if(createNewItem.getavailableItemRecordTypesTxtAfterSaveAndNewBtn().equalsIgnoreCase(availableItemRecordTypesText)){

您正在运行此方法：

//Method to compare with 'Available Item Record Types' static text 
public String getavailableItemRecordTypesTxtAfterSaveAndNewBtn(){
    String availableItemRecordTypesTxt = driver.findElement(By.xpath("//h3[@class='recordTypesHeading']")).getText();
    return availableItemRecordTypesTxt;
}

在您的评论中，您说您执行了7次，但由于文本不存在，因此在上一次迭代中失败。你说：

当脚本单击“保存”按钮时，UI会有所不同，并且没有“保存并新建”按钮。

我想您正在期待，因为此方法位于IF中（从第一个代码块开始），如果对象不存在，它将不返回任何内容。但是，硒不能那样工作。

实际上发生的是，您要让硒查看元素是否存在，并且硒是否找不到对象，它会抛出NoSuchElementException

使用硒的最佳方法是仅对预期对象编程代码。检查对象-不-存在会更加困难，因为您需要确保已为页面准备就绪，所有脚本都已执行并完成而充分等待（隐式或显式等待时间）返回所有数据。这通常会导致脚本花费时间。如果您不等那么多时间，就会得到 false-passes ，这在测试世界中是非常糟糕的。例如，假设您将隐式等待时间设置为30秒-并想验证某个元素不存在，则每次调用该元素都必须等待30秒。如果该方法随后被多个脚本调用，则总执行时间将迅速增加。

也就是说-如果您想要快速解决方案。像这样向您的代码添加错误处理：

public String getavailableItemRecordTypesTxtAfterSaveAndNewBtn(){
    //create a new blank string
    String availableItemRecordTypesTxt = "";
    try 
    {
        // only set the string if the object exists
         availableItemRecordTypesTxt = driver.findElement(By.xpath("//h3[@class='recordTypesHeading']")).getText();
    }
    catch (NoSuchElementException ex)
    {
       //Allow this error the be thrown but not stop your test
       //error handle here - e.g. reporting or another action
    }
    return availableItemRecordTypesTxt;
}

这将使您的对象出错，并且如果不存在该对象，该方法将不返回任何文本，并且从理论上讲，如果该文本不存在，则继续进行下一个文本。

根据评论进行更新。

错误处理到位，但未捕获到异常。我相信您添加了错误的例外。要明确，并在您的下层方法中替换此行：

catch (org.openqa.selenium.NoSuchElementException exp){

我已经在问题的简化版本上运行了一些代码。我添加了一个xpath，该xpath显然将不存在，并且代码捕获了错误并且不返回任何文本。

这是代码：

 @Test
    public void demo()
    {
        String WhatIsTheReturn = getavailableItemRecordTypesTxtAfterSaveAndNewBtn();
        System.out.println("the return is... " + WhatIsTheReturn);
    }

    public String getavailableItemRecordTypesTxtAfterSaveAndNewBtn(){
        String availableItemRecordTypesTxt = "";
        try{
            availableItemRecordTypesTxt = driver.findElement(By.xpath("//a[text()='I do not exist']")).getText();
        }
        catch (org.openqa.selenium.NoSuchElementException exp){
            System.out.println("Excpetion was handled!");
        }
        return availableItemRecordTypesTxt;
    }

这是输出（捕获到异常，返回为空）

期望得到处理！

返回是...

选择器值可能错误。尝试使用硒IDE与该特定元素进行交互，然后使用IDE显示的选择器。

正在获取org.openqa.selenium.NoSuchElementException：无此类元素：无法找到元素：{“ method”：“ xpath”，“ selector”：错误

如何解决正在获取org.openqa.selenium.NoSuchElementException：无此类元素：无法找到元素：{“ method”：“ xpath”，“ selector”：错误

解决方法

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