问题
Below is my exported java headless selenium testcase code that runs fine from IDE.
package pack;
import java.util.regex.Pattern;
import java.util.concurrent.TimeUnit;
import org.junit.*;
import static org.junit.Assert.*;
import static org.hamcrest.CoreMatchers.*;
import org.openqa.selenium.*;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.openqa.selenium.support.ui.Select;
import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.support.ui.*;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.htmlunit.HtmlUnitDriver;
public class QScan {
private static HtmlUnitDriver driver;
private static String baseUrl;
private boolean acceptNextAlert = true;
private static StringBuffer verificationErrors = new StringBuffer();
public static void setUp() throws Exception {
driver = new HtmlUnitDriver();
driver.manage().timeouts().implicitlyWait(60, TimeUnit.SECONDS);
}
public static void testQScan() throws Exception {
driver.get("https://qualysguard.mybank.com/fo/login.php?idm_key=saml2_70d8552f0974");
WebElement element = new WebDriverWait(driver, 20).until(ExpectedConditions.elementToBeClickable(By.cssSelector("#userNameInput")));
System.out.println("Title of the page is -> " + driver.getTitle());
System.out.println("Entering userName!");
driver.findElement(By.id("userNameInput")).click();
System.out.println("Clear userName!");
driver.findElement(By.id("userNameInput")).clear();
System.out.println("Title of the page is 2 -> " + driver.getTitle());
}
public static void main(String[] args) throws Exception
{
QScan.setUp();
QScan.testQScan();
QScan.tearDown();
}
private static boolean isElementPresent(By by) {
try {
driver.findElement(by);
return true;
} catch (NoSuchElementException e) {
return false;
}
}
private boolean isAlertPresent() {
try {
driver.switchTo().alert();
return true;
} catch (NoAlertPresentException e) {
return false;
}
}
}
I was able to compile this real quick using below command-line:
javac -d . -cp /app/lib/selenium-server-standalone-3.141.59.jar:/app/lib/selenium-htmlunit-driver-2.52.0.jar:/app/lib/junit.jar:/app/lib/hamcrest-core-1.2.jar QScan.java
The CLASSPATH was set as below before running the java code:
$ echo $CLASSPATH
/app/lib/guava-25.0-jre.jar:/app/lib/httpclient-4.5.9.jar:/app/lib/selenium-java-3.141.0.jar:/app/lib/selenium-api-3.141.0.jar:/app/lib/selenium-firefox-driver-3.141.0.jar:/app/lib/selenium-support-3.141.0.jar:/app/lib/selenium-htmlunit-driver-2.52.0.jar:/app/lib/selenium-server-standalone-2.53.0.jar:/app/lib/htmlunit-2.36.0.jar:/app/lib/sac-1.3.jar.zip:/app/lib/htmlunit-core-js-2.36.0.jar:/app/lib/sac-1.3/sac.jar:/app/lib/selenium-remote-driver-4.0.0-alpha-3.jar:/app/lib/selenium-remote-driver-2.44.0.jar:/app/lib/commons-logging-1.2.jar:/app/lib/httpclient-4.5.9.jar:/app/lib/httpcore-4.4.11.jar:/app/lib/commons-codec-1.11.jar:/app/lib/htmlunit-cssparser-1.5.0.jar:/app/lib/commons-lang3-3.9.jar:/app/lib/dec-0.1.2.jar:/app/lib/httpmime-4.5.9.jar:/app/lib/xalan-2.7.2.jar:/app/lib/websocket-api-9.4.20.v20190813.jar:/app/lib/websocket-client-9.4.20.v20190813.jar:/app/lib/websocket-common-9.4.20.v20190813.jar:/app/lib/jetty-util-9.4.20.v20190813.jar:/app/lib/commons-io-2.6.jar:/app/lib/xerces-2.9.0.jar:/app/lib/neko-htmlunit-2.36.0.jar:/app/lib/com.google.collections.jar:/app/lib/junit.jar:/app/lib/hamcrest-core-1.2.jar:.
However, I got the below error running the java testcase.
java pack.QScan
Title of the page is -> null
Exception in thread "main" java.lang.IllegalStateException: Unable to locate element by xpath for com.gargoylesoftware.htmlunit.UnexpectedPage@42039326
at org.openqa.selenium.htmlunit.HtmlUnitDriver.findElementByXPath(HtmlUnitDriver.java:1152)
at org.openqa.selenium.By$ByXPath.findElement(By.java:353)
at org.openqa.selenium.htmlunit.HtmlUnitDriver$5.call(HtmlUnitDriver.java:1725)
at org.openqa.selenium.htmlunit.HtmlUnitDriver$5.call(HtmlUnitDriver.java:1721)
at org.openqa.selenium.htmlunit.HtmlUnitDriver.implicitlyWaitFor(HtmlUnitDriver.java:1367)
at org.openqa.selenium.htmlunit.HtmlUnitDriver.findElement(HtmlUnitDriver.java:1721)
at org.openqa.selenium.htmlunit.HtmlUnitDriver.findElement(HtmlUnitDriver.java:606)
at org.openqa.selenium.support.ui.ExpectedConditions$7.apply(ExpectedConditions.java:205)
at org.openqa.selenium.support.ui.ExpectedConditions$7.apply(ExpectedConditions.java:201)
at org.openqa.selenium.support.ui.ExpectedConditions$22.apply(ExpectedConditions.java:641)
at org.openqa.selenium.support.ui.ExpectedConditions$22.apply(ExpectedConditions.java:638)
at org.openqa.selenium.support.ui.FluentWait.until(FluentWait.java:249)
at pack.QScan.testQScan(QScan.java:46)
at pack.QScan.main(QScan.java:183)
After some research, in order to solve the above error, I decided to download htmlunit 2.9 jar and its dependencies from here:
https://jar-download.com/artifacts/net.sourceforge.htmlunit/htmlunit/2.9/source-code
I then updated my CLASSPATH by adding the below new jars ahead in the CLASSPATH:
/app/lib/gaygoyle/cssparser-0.9.5.jar:/app/lib/gaygoyle/commons-collections-3.2.1.jar:/app/lib/gaygoyle/commons-lang-2.6.jar:/app/lib/gaygoyle/htmlunit-2.9.jar:/app/lib/selenium-htmlunit-driver-2.52.0.jar:<previous classpath as mentioned before>
Now running the java testcase resolve the previous error and other dependencies, however, I get a new error that I have no clue on how to resolve. See error below:
java pack.QScan
Exception in thread "main" java.lang.NoSuchMethodError: com.gargoylesoftware.htmlunit.WebClient.getOptions()Lcom/gargoylesoftware/htmlunit/WebClientOptions;
at org.openqa.selenium.htmlunit.HtmlUnitDriver.createWebClient(HtmlUnitDriver.java:320)
at org.openqa.selenium.htmlunit.HtmlUnitDriver.<init>(HtmlUnitDriver.java:191)
at org.openqa.selenium.htmlunit.HtmlUnitDriver.<init>(HtmlUnitDriver.java:181)
at org.openqa.selenium.htmlunit.HtmlUnitDriver.<init>(HtmlUnitDriver.java:171)
at org.openqa.selenium.htmlunit.HtmlUnitDriver.<init>(HtmlUnitDriver.java:161)
at pack.QScan.setUp(QScan.java:32)
at pack.QScan.main(QScan.java:182)
I don't use or wish to use any IDE as I wish this to run as a command-line.
A Second Approach:
After having no clue; I tried changing the classpath to below:
export CLASSPATH="/app/lib/commons-lang-2.6.jar:/app/lib/commons-logging-1.2.jar:/app/lib/commons-codec-1.11.jar:/app/lib/httpclient-4.5.9.jar:/app/lib/commons-io-2.6.jar:/app/lib/selenium-remote-driver-2.44.0.jar:/app/lib/gaygoyle/htmlunit-core-js-2.9.jar:/app/lib/gaygoyle/htmlunit-2.9.jar:/app/lib/selenium-htmlunit-driver-2.52.0.jar:/app/lib/selenium-server-standalone-3.141.59.jar:/app/lib/gaygoyle/sac-1.3.jar:."
However, running the code gave me the below error.
[user1@host1 vapt]$ java pack.QScan
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/commons/lang/StringUtils
at com.gargoylesoftware.htmlunit.util.URLCreator$URLCreatorStandard.toUrlUnsafeClassic(URLCreator.java:66)
at com.gargoylesoftware.htmlunit.util.UrlUtils.toUrlUnsafe(UrlUtils.java:193)
at com.gargoylesoftware.htmlunit.util.UrlUtils.toUrlSafe(UrlUtils.java:171)
at com.gargoylesoftware.htmlunit.WebClient.<clinit>(WebClient.java:162)
at org.openqa.selenium.htmlunit.HtmlUnitDriver.newWebClient(HtmlUnitDriver.java:353)
at org.openqa.selenium.htmlunit.HtmlUnitDriver.createWebClient(HtmlUnitDriver.java:319)
at org.openqa.selenium.htmlunit.HtmlUnitDriver.<init>(HtmlUnitDriver.java:191)
at org.openqa.selenium.htmlunit.HtmlUnitDriver.<init>(HtmlUnitDriver.java:181)
at org.openqa.selenium.htmlunit.HtmlUnitDriver.<init>(HtmlUnitDriver.java:171)
at org.openqa.selenium.htmlunit.HtmlUnitDriver.<init>(HtmlUnitDriver.java:161)
at pack.QScan.setUp(QScan.java:32)
at pack.QScan.main(QScan.java:182)
Caused by: java.lang.ClassNotFoundException: org.apache.commons.lang.StringUtils
at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 12 more
The most strange thing here was "org/apache/commons/lang/StringUtils" is present in /app/lib/commons-lang-2.6.jar which is in the classpath. Yet I get "java.lang.NoClassDefFoundError" See below s a proof of the above statement.
[user1@host1 lib]$ find . -name commons-lang-2.6.jar -printf "%f%h" -exec jar tvf {} \; | grep -i 'org/apache/commons/lang/StringUtils'
37671 Thu Jan 13 23:06:38 IST 2011 org/apache/commons/lang/StringUtils.class
37671 Thu Jan 13 23:06:38 IST 2011 org/apache/commons/lang/StringUtils.class
I never knew it is going to be this bad. Can someone please guide how can I get this to work?
This post is after I made progress on the original post here:Unable to run java junit selenium code for my test case
回答1:
Here's a list of libs I use. Hopefully this helps:
byte-buddy-1.8.3.jar
commons-codec-1.10.jar
commons-exec-1.3.jar
commons-io-2.5.jar
commons-logging-1.2.jar
gson-2.8.4.jar
guava-25.0-jre.jar
htmlunit-driver-2.33.3-jar-with-dependencies.jar
httpclient-4.5.5.jar
httpcore-4.4.9.jar
okhttp-3.10.0.jar
okio-1.14.1.jar
selenium-server-standalone-3.141.59.jar
回答2:
HtmlUnit 2.9 is really, really outdated. The current version is 2.36 (http://htmlunit.sourceforge.net/)
If you like to download the jar together with all required dependencies, please download the stuff from the project download page. You can find the download at https://sourceforge.net/projects/htmlunit/files/htmlunit/2.36.0/ and the zip with all the dependencies is htmlunit-2.36.0-bin.zip.
If you really need this old version download the similar named file from the corresponding subfolder of https://sourceforge.net/projects/htmlunit/files/htmlunit/
来源：https://stackoverflow.com/questions/59059614/getting-error-running-java-selenium-headless-testcase-due-to-classpath-uncertain