java.lang.NoSuchMethodError:org.openqa.selenium.os.CommandLine.find(Ljava/lang/String;)Ljava/lang/String;在将PhantomJS 2.1.1与Selenium一起使用时 [英] java.lang.NoSuchMethodError: org.openqa.selenium.os.CommandLine.find(Ljava/lang/String;)Ljava/lang/String; while using PhantomJS 2.1.1 with Selenium

问题描述

OS-Windows 7

OS - Windows 7

PhantomJS版本-2.1.1

PhantomJS version - 2.1.1

硒-3.8.1(硒服务器).

Selenium - 3.8.1(selenium-server).

JDK-152.

我正在尝试使用PhantomJS运行简单的测试:

I'm trying to run simple test, using PhantomJS:

1)初始化驱动程序:

1) initializing the driver:

System.setProperty("phantomjs.binary.path","src\\main\\resources\\phantomjs.exe");
WebDriver driver = new PhantomJSDriver();

2)进行任何测试，让它在en.wikipedia.org上验证文本"welcome":

2) any test, let it be verifying text "welcome" on en.wikipedia.org:

driver.get("http://en.wikipedia.org");
System.out.println(driver.findElement(By.xpath("//div[contains(text(),'Welcome')]")).isDisplayed());

3)运行测试，但收到错误:

3) Running test, but receiving errors:

Exception in thread "main" java.lang.NoSuchMethodError: org.openqa.selenium.os.CommandLine.find(Ljava/lang/String;)Ljava/lang/String;
    at org.openqa.selenium.phantomjs.PhantomJSDriverService.findPhantomJS(PhantomJSDriverService.java:232)
    at org.openqa.selenium.phantomjs.PhantomJSDriverService.createDefaultService(PhantomJSDriverService.java:181)
    at org.openqa.selenium.phantomjs.PhantomJSDriver.<init>(PhantomJSDriver.java:104)
    at org.openqa.selenium.phantomjs.PhantomJSDriver.<init>(PhantomJSDriver.java:94)

Google搜索显示，此类问题有时会发生(不兼容selenium/PhantomJS). 问:结交最后一个硒和2.1.1 PhantomJS的好朋友有什么解决方法吗?

Googling showed, that such troubles occur time to time (non-compatible selenium/PhantomJS). Question: is there any workaround for making last selenium(s) and 2.1.1 PhantomJS good friends?

注意:任何其他驱动程序都可以正常工作(edge，chrome，ff).

note: any other driver works fine (edge, chrome, ff).

推荐答案

您所看到的错误说明了一切:

The error you are seeing says it all :

NoSuchMethodError: org.openqa.selenium.os.CommandLine.find(Ljava/lang/String;)Ljava/lang/String;

班级 NoSuchMethodError

NoSuchMethodError > 扩展了 IncompatibleClassChangeError ，并且根据 Java Docs ，如果应用程序尝试调用类(静态或实例)的指定方法，并且该类不再具有该方法的定义.通常，此错误由编译器捕获，并且只有在类的定义发生不兼容更改的情况下，此错误才可能在运行时发生.

Class NoSuchMethodError

NoSuchMethodError extends IncompatibleClassChangeError and as per the Java Docs it is thrown if an application tries to call a specified method of a class (either static or instance), and that class no longer has a definition of that method. Normally, this error is caught by the compiler and this error can only occur at run time if the definition of a class has incompatibly changed.

执行以下步骤:

• 将您的 JDK 更新到最新版本( Java 8 Update 151 )
• 从IDE中清理 Project Space .
• 运行 CCleaner 工具以清除所有OS系统琐事.
• 接受 System Reboot
• 仅添加 Selenium-Java客户端v3.8.1 jar.

• 使用 PhantomJSDriver(GhostDriver)时，您需要添加以下 Maven依赖项:

• Update your JDK to the most recent versions (Java 8 Update 151)
• Clean up the Project Space from the IDE.
• Run CCleaner tool to wipe off all the OS system chores.
• Take a System Reboot
• Add only Selenium-Java Clients v3.8.1 jar.

• As you are using PhantomJSDriver (GhostDriver) you need to add the following Maven Dependency :

<dependency>
    <groupId>com.github.detro</groupId>
    <artifactId>phantomjsdriver</artifactId>
    <version>1.4.0</version>
</dependency> 

您需要使用 phantomjs 二进制文件的绝对路径更新 System.setProperty 行，如下所示:

You need to update the line System.setProperty with the absolute path of the phantomjs binary as follows :

File path=new File("C:\\path\\\to\phantomjs-2.1.1-windows\\bin\\phantomjs.exe");
System.setProperty("phantomjs.binary.path",path.getAbsolutePath());
WebDriver driver= new PhantomJSDriver();
driver.navigate().to("https://www.google.co.in/");

执行您的 Test

Execute your Test

这篇关于java.lang.NoSuchMethodError:org.openqa.selenium.os.CommandLine.find(Ljava/lang/String;)Ljava/lang/String;在将PhantomJS 2.1.1与Selenium一起使用时的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！