java - 使用 Selenium WebDriver 进行简单测试设置失败

Question

我只是想执行基本的 Selenium 测试。没什么特别的，只是为了确保它有效。但是会引发异常。我可能做错了什么？

当然，我使用以下命令启动服务器:java -jar selenium-server-standalone-2.24.1.jar

import static org.junit.Assert.fail;

import java.util.concurrent.TimeUnit;

import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.openqa.selenium.By;
import org.openqa.selenium.NoSuchElementException;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.firefox.FirefoxDriver;

public class Selenium {
    private WebDriver driver;
    private String baseUrl;
    private StringBuffer verificationErrors = new StringBuffer();

    @Before
    public void setUp() throws Exception {
        driver = new FirefoxDriver();
        baseUrl = "http://www.google.de/";
        driver.manage().timeouts().implicitlyWait(20, TimeUnit.SECONDS);
    }

    @Test
    public void testSeleniumWeb() throws Exception {
    //empty just for testing
    }
}

抛出:

java.lang.AbstractMethodError: org.apache.crimson.tree.ElementNode2.getTextContent()Ljava/lang/String;
    at org.openqa.selenium.firefox.internal.FileExtension.readIdFromInstallRdf(FileExtension.java:134)
    at org.openqa.selenium.firefox.internal.FileExtension.writeTo(FileExtension.java:61)
    at org.openqa.selenium.firefox.internal.ClasspathExtension.writeTo(ClasspathExtension.java:64)
    at org.openqa.selenium.firefox.FirefoxProfile.installExtensions(FirefoxProfile.java:547)
    at org.openqa.selenium.firefox.FirefoxProfile.layoutOnDisk(FirefoxProfile.java:525)
    at org.openqa.selenium.firefox.internal.NewProfileExtensionConnection.start(NewProfileExtensionConnection.java:74)
    at org.openqa.selenium.firefox.FirefoxDriver.startClient(FirefoxDriver.java:149)
    at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:78)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:128)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:79)
    at de.coconet.soapui.selenium.setUp(selenium.java:15)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:45)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42)
    at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:27)
    at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:30)
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:68)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:300)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:49)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)

Answer 1

这与你的代码无关。你有一个类路径问题。有些类依赖于与类路径中第一个找到的版本不同的 ElementNode2 版本。

如果你看jarfinder可以看到，JDK 1.4之后，该类包含在Java运行时(rt.jar)中。

我怀疑您使用的 JDK 版本比 WebDriver 编译所针对的版本旧。 WebDriver 需要 JDK 1.6+。