英文:
Executing a test on Headless (HtmlUnitDriver) mode, passes on Eclipse IDE but fails when executed in JMeter
问题
以下是翻译好的部分：
我在Eclipse IDE中编写了一个简单的java-selenium-maven脚本，将其导出为JAR文件，并尝试从JMeter中执行。我有两个版本的这个脚本，一个是普通的`ChromeDriver`，另一个是无头的，它使用了`HtmlUnitDriver`。这里是第二个版本，因为它是出问题的那个：package testing1;import org.junit.After;import org.junit.Before;import org.junit.Test;import org.openqa.selenium.By;import org.openqa.selenium.WebDriver;import org.openqa.selenium.WebElement;import org.openqa.selenium.htmlunit.HtmlUnitDriver;public class NewTestHeadless {@Testpublic void testGoogleSearch() throws InterruptedException {WebDriver driver = new HtmlUnitDriver();driver.get("http://www.google.com/");Thread.sleep(5000);WebElement searchBox = driver.findElement(By.name("q"));searchBox.sendKeys("ChromeDriver");searchBox.submit();Thread.sleep(5000);driver.quit();}@Beforepublic void beforeT() {System.out.println("BEFOREEEE");}@Afterpublic void afterT() {System.out.println("AFTEERRRR");}}
这是我的 pom.xml 文件：
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><groupId>selenium.example</groupId><artifactId>testing-example-selenium</artifactId><version>0.0.1-SNAPSHOT</version><name>testing</name><dependencies><dependency><groupId>org.seleniumhq.selenium</groupId><artifactId>selenium-java</artifactId><version>4.0.0-alpha-2</version></dependency><dependency><groupId>org.seleniumhq.selenium</groupId><artifactId>selenium-server</artifactId><version>4.0.0-alpha-2</version></dependency><dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>4.11</version><scope>test</scope></dependency><dependency><groupId>org.seleniumhq.selenium</groupId><artifactId>htmlunit-driver</artifactId><version>2.43.1</version></dependency></dependencies></project>
这是我在Eclipse IDE中的项目结构。
这是我如何导出为JAR文件的。
我已经将此文件放在apache-jmeter-5.3\lib\junit下，我可以在JUnit Request Samplers中正确看到该脚本的类和方法。
当我在Eclipse中执行时，两个测试（无头 + Chrome）都通过，但当我从JMeter中执行时，无头测试失败。
有关可能问题的任何想法吗？
这是Results Tree监听器中的采样器响应，响应为空：
Thread Name:Scenario 27 - Selenium JUnit 5-1
Sample Start:2020-08-25 12:26:16 EEST
Load time:980
Connect Time:0
Latency:0
Size in bytes:0
Sent bytes:0
Headers size in bytes:0
Body size in bytes:0
Sample Count:1
Error Count:1
Data type ("text"|"bin"|"" ):text
Response code:1000
Response message:
SampleResult fields:
ContentType:
DataEncoding: windows-1252
请注意，我只提供了代码和XML配置的翻译，其他的问题和内容我都没有回答。<details><summary>英文:</summary>I have a simple java-selenium-maven script written in Eclipse IDE which I have exported in a JAR file and I tried to execute from JMeter.I have two versions of this script, one is with normal `ChromeDriver` and the other one is headless and it uses the `HtmlUnitDriver`.Here is the second one as it is the one that misbehaves:package testing1;import org.junit.After;import org.junit.Before;import org.junit.Test;import org.openqa.selenium.By;import org.openqa.selenium.WebDriver;import org.openqa.selenium.WebElement;import org.openqa.selenium.htmlunit.HtmlUnitDriver;public class NewTestHeadless {@Testpublic void testGoogleSearch() throws InterruptedException {WebDriver driver = new HtmlUnitDriver();driver.get("http://www.google.com/");Thread.sleep(5000); // Let the user actually see something!WebElement searchBox = driver.findElement(By.name("q"));searchBox.sendKeys("ChromeDriver");searchBox.submit();Thread.sleep(5000); // Let the user actually see something!driver.quit();}@Beforepublic void beforeT() {System.out.println("BEFOREEEE");}@Afterpublic void afterT() {System.out.println("AFTEERRRR");}}This is my `pom.xml` file:<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><groupId>selenium.example</groupId><artifactId>testing-example-selenium</artifactId><version>0.0.1-SNAPSHOT</version><name>testing</name><dependencies><dependency><groupId>org.seleniumhq.selenium</groupId><artifactId>selenium-java</artifactId><version>4.0.0-alpha-2</version></dependency><dependency><groupId>org.seleniumhq.selenium</groupId><artifactId>selenium-server</artifactId><version>4.0.0-alpha-2</version></dependency><dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>4.11</version><scope>test</scope></dependency><dependency><groupId>org.seleniumhq.selenium</groupId><artifactId>htmlunit-driver</artifactId><version>2.43.1</version></dependency></dependencies></project>And this is the structure of my project in Eclipse IDE[![enter image description here][1]][1]Here is how i exported to JAR file[![enter image description here][2]][2]I have put this file under `apache-jmeter-5.3\lib\junit` and I can see correctly in JUnit Request Samplers the classes and methods from that script[![enter image description here][3]][3]When i execute in Eclipse, both test (headless + chrome) passes but when i execute from JMeter, the headless one failsAny ideas of what might be the problem?This is the sampler response in the Results Tree listener and the response is empty:Thread Name:Scenario 27 - Selenium JUnit 5-1Sample Start:2020-08-25 12:26:16 EESTLoad time:980Connect Time:0Latency:0Size in bytes:0Sent bytes:0Headers size in bytes:0Body size in bytes:0Sample Count:1Error Count:1Data type ("text"|"bin"|""):textResponse code:1000Response message:SampleResult fields:ContentType:DataEncoding: windows-1252[1]: https://i.stack.imgur.com/NYqxX.png[2]: https://i.stack.imgur.com/MXOns.png[3]: https://i.stack.imgur.com/Hkezp.png</details># 答案1**得分**: 1你漏掉了一个重要的步骤：你的.jar文件只包含了你的代码，没有包含`htmlunit-driver`、`selenium-java`等内容，所以我预期如果你查看[jmeter.log文件][1]，你会看到JMeter找不到与Selenium相关的类。一个简单粗暴的解决方案是执行[`mvn dependency:copy-dependencies`命令][2]，一旦完成，将项目的`target/dependencies`文件夹中的所有内容复制到你的JMeter安装目录下的“lib”文件夹中（或[JMeter类路径][3]中的其他位置）。重新启动后，你应该能看到你的测试在工作。一个更好的选择是[使用Maven Shade插件创建“uber jar”][4]，其中包含了运行你的测试所需的所有内容。最后但同样重要的是，你可能会发现[JMeter WebDriver采样器][5]更容易使用。[1]: https://jmeter.apache.org/usermanual/get-started.html#logging[2]: https://maven.apache.org/plugins/maven-dependency-plugin/copy-dependencies-mojo.html[3]: https://jmeter.apache.org/usermanual/get-started.html#classpath[4]: https://maven.apache.org/plugins/maven-shade-plugin/examples/includes-excludes.html[5]: https://www.blazemeter.com/blog/jmeter-webdriver-sampler/<details><summary>英文:</summary>You're missing one important step: your .jar file has only your code and doesn't contain `htmlunit-driver`, `selenium-java`, etc. so my expectation is that if you look into [jmeter.log file][1] you will see that JMeter cannot find Selenium-related classes.Quick and dirty solution would be executing [`mvn dependency:copy-dependencies` command][2] and once it is done copy everything from `target/dependencies` folder of your project to the "lib" folder of your JMeter installation (or other place in [JMeter Classpath][3])After restart you should see your test working.A better option would be [using Maven Shade plugin for creating a "uber jar"][4] containing everyting which is needed for running your testAnd last but not the least you may find [JMeter WebDriver Sampler][5] much easier to use[1]: https://jmeter.apache.org/usermanual/get-started.html#logging[2]: https://maven.apache.org/plugins/maven-dependency-plugin/copy-dependencies-mojo.html[3]: https://jmeter.apache.org/usermanual/get-started.html#classpath[4]: https://maven.apache.org/plugins/maven-shade-plugin/examples/includes-excludes.html[5]: https://www.blazemeter.com/blog/jmeter-webdriver-sampler/</details>
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