問題描述
當我執行以下代碼時:
driver.findElement(By.className("qview-product-name")).click();
我收到以下錯誤
Session ID: d5df6f837164b1738991e8dc09027fe0
*** Element info: {Using=class name, value=qview-product-name}
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.http.W3CHttpResponseCodec.createException(W3CHttpResponseCodec.java:187)
at org.openqa.selenium.remote.http.W3CHttpResponseCodec.decode(W3CHttpResponseCodec.java:122)
at org.openqa.selenium.remote.http.W3CHttpResponseCodec.decode(W3CHttpResponseCodec.java:49)
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:552)
at org.openqa.selenium.remote.RemoteWebDriver.findElement(RemoteWebDriver.java:323)
at org.openqa.selenium.remote.RemoteWebDriver.findElementByClassName(RemoteWebDriver.java:412)
at org.openqa.selenium.By$ByClassName.findElement(By.java:389)
at org.openqa.selenium.remote.RemoteWebDriver.findElement(RemoteWebDriver.java:315)
at Logins.bcLogin(Logins.java:140)
at Exception.main(Exception.java:54)
我正在處理的網頁肯定包含以下 HTML 代碼，我已嘗試等待適當的時間來執行.
The webpage I am working on definately contains the following HTML code and I have tried waiting an appropriate amount of time to execute.
<dd class="qview-product-name">
<span class="note">1 x </span>
<a href="Link_here"_blank">Title</a>
</dd>
我以為我在使用各種方法定位元素方面已經做得很好了，但這讓我很難過.關于我應該如何進行故障排除的任何想法?謝謝！
I thought I was getting pretty good at locating elements using the various methods, but this has me stumped. Any ideas on how I should go about troubleshooting? Thanks!
推薦答案
您需要注意以下幾點:
By.className("qview-product-name")指的是父<dd>標簽，可能不是您想要單擊的所需元素.相反，您的用例必須是單擊<a href="Link_here"_blank">Title</a>元素.根據最佳實踐，在調用
click()時，您需要為elementToBeClickable()WebDriverWait> 并且您可以使用以下任一定位器策略:
By.className("qview-product-name")refers to the parent<dd>tag and perhaps is not the desired element you want to click. Rather your usecase must be to click on the<a href="Link_here"_blank">Title</a>element.As per best practices, while invoking
click()you need to induce you need to induce WebDriverWait for theelementToBeClickable()and you can use either of the following Locator Strategies:
linkText:
new WebDriverWait(driver, 20).until(ExpectedConditions.elementToBeClickable(By.linkText("Title"))).click();
cssSelector:
new WebDriverWait(driver, 20).until(ExpectedConditions.elementToBeClickable(By.cssSelector("dd.qview-product-name a[href='Link_here']"))).click();
xpath:
new WebDriverWait(driver, 20).until(ExpectedConditions.elementToBeClickable(By.xpath("http://dd[@class='qview-product-name']//a[@href='Link_here' and text()='Title']"))).click();
確保:
- JDK 升級到當前級別 JDK 8u222.
- Selenium 已升級到當前級別版本 3.141.59.
- ChromeDriver 已更新為當前 ChromeDriver v77.0 級別.
- Chrome 已更新至當前 Chrome 版本 77.0 級別.(根據 ChromeDriver v77.0 發行說明)
- 清理你的項目工作區通過你的IDE和重建你的項目只需要依賴.
- 如果您的基本 Web 客戶端 版本太舊，請卸載它并安裝最新的 GA 和發布版本的 Web 客戶端.
- 進行一次系統重啟.
- 以 非 root 用戶身份執行您的
@Test.
- JDK is upgraded to current levels JDK 8u222.
- Selenium is upgraded to current levels Version 3.141.59.
- ChromeDriver is updated to current ChromeDriver v77.0 level.
- Chrome is updated to the current Chrome Version 77.0 level. (as per ChromeDriver v77.0 release notes)
- Clean your Project Workspace through your IDE and Rebuild your project with required dependencies only.
- If your base Web Client version is too old, then uninstall it and install a recent GA and released version of Web Client.
- Take a System Reboot.
- Execute your
@Testas non-root user.
這篇關于sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) 通過 Selenium 和 Java 使用 findElement(By.className())的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網！