建设＆＃34;尝试/捕获＆＃34;没有捕获异常＆＃34; NoSuchElementException＆＃34;

时间：2017-10-26 09:40:29

标签： java selenium selenium-webdriver automated-tests qa

我是SELENIUM的新手，所以如果这个问题听起来很愚蠢，请备用。 我写了一个测试，打开页面并检查页面上是否存在一些元素。 当元素不存在时，尝试/捕获拦截错误消息并打印到控制台通知。虽然我有积极的结果（元素存在）鳕鱼到TRY块工作良好。但是如果我有负面结果并且元素没有找到建筑CATCH不起作用。请解释一下为什么？

package ua.com.local;

import org.openqa.selenium.By;
import org.openqa.selenium.NoSuchElementException;
import org.openqa.selenium.WebElement;
import org.testng.Assert;
import org.testng.annotations.Test;

public void OpenPage() {
    driver.findElement(By.xpath("//button[@class='filter-submit__btn']")).click();
            Assert.assertTrue(isElementPresent(driver.findElement(By.xpath("//form[@class='section-filter__form']"))));
            driver.quit();
        }

    public boolean isElementPresent(WebElement element) {
        try {
            element.isEnabled();
            System.out.println("Element found!!! " + element);
            return true;
        } catch (org.openqa.selenium.NoSuchElementException e)  {
            System.out.println("NoSuchElementException!!");
            return false;
        }
    }

控制台输出 

Starting ChromeDriver 2.32.498550 (9dec58e66c31bcc53a9ce3c7226f0c1c5810906a) on port 5367
Only local connections are allowed.
окт 25, 2017 3:57:38 PM org.openqa.selenium.remote.ProtocolHandshake createSession
INFO: Detected dialect: OSS
Element found!!! [[ChromeDriver: chrome on XP (be9a3b360b5258e093a80c82282b0a23)] -> xpath: //a[@href='/category/dulkiu-siurbliai/']]
Element found!!! [[ChromeDriver: chrome on XP (be9a3b360b5258e093a80c82282b0a23)] -> xpath: //a[@href='/category/sulankstomos-dziovykles/']]
Element found!!! [[ChromeDriver: chrome on XP (be9a3b360b5258e093a80c82282b0a23)] -> xpath: //a[@href='/category/indaploves/']]

org.openqa.selenium.NoSuchElementException: no such element: Unable to locate element: {"method":"xpath","selector":"//form[@class='section-filter__form']"}
  (Session info: chrome=61.0.3163.100)
  (Driver info: chromedriver=2.32.498550 (9dec58e66c31bcc53a9ce3c7226f0c1c5810906a),platform=Windows NT 10.0.14393 x86_64) (WARNING: The server did not provide any stacktrace information)
Command duration or timeout: 0 milliseconds
For documentation on this error, please visit: http://seleniumhq.org/exceptions/no_such_element.html
Build info: version: '3.6.0', revision: '6fbf3ec767', time: '2017-09-27T15:28:36.4Z'
System info: host: 'AMELNYCHENKO', ip: '192.168.110.2', os.name: 'Windows 10', os.arch: 'amd64', os.version: '10.0', java.version: '1.8.0_144'
Driver info: org.openqa.selenium.chrome.ChromeDriver
Capabilities [{mobileEmulationEnabled=false, hasTouchScreen=false, platform=XP, acceptSslCerts=true, webStorageEnabled=true, browserName=chrome, takesScreenshot=true, javascriptEnabled=true, platformName=XP, setWindowRect=true, unexpectedAlertBehaviour=, applicationCacheEnabled=false, rotatable=false, networkConnectionEnabled=false, chrome={chromedriverVersion=2.32.498550 (9dec58e66c31bcc53a9ce3c7226f0c1c5810906a), userDataDir=C:\Users\Andrey\AppData\Local\Temp\scoped_dir5444_8929}, takesHeapSnapshot=true, pageLoadStrategy=normal, unhandledPromptBehavior=, databaseEnabled=false, handlesAlerts=true, version=61.0.3163.100, browserConnectionEnabled=false, nativeEvents=true, locationContextEnabled=true, cssSelectorsEnabled=true}]
Session ID: be9a3b360b5258e093a80c82282b0a23
*** Element info: {Using=xpath, value=//form[@class='section-filter__form']}

    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:82)
    at org.openqa.selenium.remote.http.AbstractHttpResponseCodec.decode(AbstractHttpResponseCodec.java:45)
    at org.openqa.selenium.remote.HttpCommandExecutor.execute(HttpCommandExecutor.java:164)
    at org.openqa.selenium.remote.service.DriverCommandExecutor.execute(DriverCommandExecutor.java:83)
    at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:586)
    at org.openqa.selenium.remote.RemoteWebDriver.findElement(RemoteWebDriver.java:356)
    at org.openqa.selenium.remote.RemoteWebDriver.findElementByXPath(RemoteWebDriver.java:458)
    at org.openqa.selenium.By$ByXPath.findElement(By.java:361)
    at org.openqa.selenium.remote.RemoteWebDriver.findElement(RemoteWebDriver.java:348)
    at ua.com.local.ZudMainPageTest.OpenPage(ZudMainPageTest.java:24)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:108)
    at org.testng.internal.Invoker.invokeMethod(Invoker.java:661)
    at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:869)
    at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1193)
    at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:126)
    at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:109)
    at org.testng.TestRunner.privateRun(TestRunner.java:744)
    at org.testng.TestRunner.run(TestRunner.java:602)
    at org.testng.SuiteRunner.runTest(SuiteRunner.java:380)
    at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:375)
    at org.testng.SuiteRunner.privateRun(SuiteRunner.java:340)
    at org.testng.SuiteRunner.run(SuiteRunner.java:289)
    at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
    at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86)
    at org.testng.TestNG.runSuitesSequentially(TestNG.java:1301)
    at org.testng.TestNG.runSuitesLocally(TestNG.java:1226)
    at org.testng.TestNG.runSuites(TestNG.java:1144)
    at org.testng.TestNG.run(TestNG.java:1115)
    at org.testng.IDEARemoteTestNG.run(IDEARemoteTestNG.java:72)
    at org.testng.RemoteTestNGStarter.main(RemoteTestNGStarter.java:123)


===============================================
ZudSuite1
Total tests run: 1, Failures: 1, Skips: 0
===============================================

1 个答案:

答案 0 :(得分：1)

原因是，行

df['moving_avg'] = df['your_column'].rolling(7).mean()
抛出异常的

不在driver.findElement(By.xpath("//form[@class='section-filter__form']")); 块内。 

try

你可以像这样检查。 

public boolean isElementPresent(By identifier) {
    try {
        element = driver.findElement(identifier);
    } catch (org.openqa.selenium.NoSuchElementException e)  {
        System.out.println("NoSuchElementException!!");
        return false;
    }

    element.isEnabled();
    System.out.println("Element found!!! " + element);
    return true;
}
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