lucaato · GitHub

Hi everyone,
I just started using HtmlUnit so I hope I'm not doing anything wrong.
The problem I have is a com.gargoylesoftware.htmlunit.ScriptException when i click on a page button, i debugged the code to see where the exception is generated and i found out that in some cases it's possible that the getStyleAttribute method of the CSSStyleDeclaration class throw an ArrayIndexOutOfBoundsException.
The specific line are theese ones (from 203 to 207 in the CSSStyleDeclaration class):

if (values.length > 3) {
    return values[3];
} else {
    return values.length > 1 ? values[1] : values[0];
}

In some case i get a zero length values array that in the last return line results in an java.lang.ArrayIndexOutOfBoundsException: Index 0 out of bounds for length 0.

This are the variables i see while debugging (if you need other details please just ask 👍):
image

This is the complete exception as logged by HtmlUnit:

mag 17, 2020 6:44:15 PM com.gargoylesoftware.htmlunit.javascript.DefaultJavaScriptErrorListener scriptException
SEVERE: Error during JavaScript execution
======= EXCEPTION START ========
Exception class=[java.lang.RuntimeException]
com.gargoylesoftware.htmlunit.ScriptException: Exception invoking getScreenX
	at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine$HtmlUnitContextAction.run(JavaScriptEngine.java:891)
	at net.sourceforge.htmlunit.corejs.javascript.Context.call(Context.java:624)
	at net.sourceforge.htmlunit.corejs.javascript.ContextFactory.call(ContextFactory.java:537)
	at com.gargoylesoftware.htmlunit.javascript.HtmlUnitContextFactory.callSecured(HtmlUnitContextFactory.java:354)
	at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine.callFunction(JavaScriptEngine.java:820)
	at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine.callFunction(JavaScriptEngine.java:792)
	at com.gargoylesoftware.htmlunit.html.HtmlPage.executeJavaScriptFunction(HtmlPage.java:2601)
	at com.gargoylesoftware.htmlunit.html.HtmlPage.executeJavaScriptFunction(HtmlPage.java:2594)
	at com.gargoylesoftware.htmlunit.javascript.host.event.EventListenersContainer.executeEventListeners(EventListenersContainer.java:342)
	at com.gargoylesoftware.htmlunit.javascript.host.event.EventListenersContainer.executeBubblingListeners(EventListenersContainer.java:361)
	at com.gargoylesoftware.htmlunit.javascript.host.event.EventTarget.fireEvent(EventTarget.java:190)
	at com.gargoylesoftware.htmlunit.html.DomElement.lambda$fireEvent$0(DomElement.java:1463)
	at net.sourceforge.htmlunit.corejs.javascript.Context.call(Context.java:624)
	at net.sourceforge.htmlunit.corejs.javascript.ContextFactory.call(ContextFactory.java:537)
	at com.gargoylesoftware.htmlunit.javascript.HtmlUnitContextFactory.callSecured(HtmlUnitContextFactory.java:354)
	at com.gargoylesoftware.htmlunit.html.DomElement.fireEvent(DomElement.java:1463)
	at com.gargoylesoftware.htmlunit.html.DomElement.doClickFireClickEvent(DomElement.java:1131)
	at com.gargoylesoftware.htmlunit.html.DomElement.click(DomElement.java:1062)
	at com.gargoylesoftware.htmlunit.html.HtmlAnchor.click(HtmlAnchor.java:85)
	at com.gargoylesoftware.htmlunit.html.DomElement.click(DomElement.java:1002)
	at com.gargoylesoftware.htmlunit.html.DomElement.click(DomElement.java:898)
	at com.gargoylesoftware.htmlunit.html.DomElement.click(DomElement.java:879)
	at com.gargoylesoftware.htmlunit.html.DomElement.click(DomElement.java:860)
	at com.github.lucaa.tools.cloudflare.CloudflareParser.generateApis(CloudflareParser.java:56)
	at com.github.lucaa.tools.cloudflare.Main.main(Main.java:9)
Caused by: java.lang.RuntimeException: Exception invoking getScreenX
	at net.sourceforge.htmlunit.corejs.javascript.MemberBox.invoke(MemberBox.java:214)
	at net.sourceforge.htmlunit.corejs.javascript.ScriptableObject$GetterSlot.getValue(ScriptableObject.java:348)
	at net.sourceforge.htmlunit.corejs.javascript.ScriptableObject.get(ScriptableObject.java:475)
	at com.gargoylesoftware.htmlunit.javascript.SimpleScriptable.get(SimpleScriptable.java:79)
	at net.sourceforge.htmlunit.corejs.javascript.ScriptableObject.getProperty(ScriptableObject.java:2340)
	at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.getObjectElem(ScriptRuntime.java:1544)
	at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.getObjectElem(ScriptRuntime.java:1525)
	at net.sourceforge.htmlunit.corejs.javascript.Interpreter.doGetElem(Interpreter.java:2414)
	at net.sourceforge.htmlunit.corejs.javascript.Interpreter.interpretLoop(Interpreter.java:1461)
	at net.sourceforge.htmlunit.corejs.javascript.Interpreter.interpret(Interpreter.java:1009)
	at net.sourceforge.htmlunit.corejs.javascript.InterpretedFunction.call(InterpretedFunction.java:111)
	at net.sourceforge.htmlunit.corejs.javascript.BoundFunction.call(BoundFunction.java:53)
	at net.sourceforge.htmlunit.corejs.javascript.ContextFactory.doTopCall(ContextFactory.java:427)
	at com.gargoylesoftware.htmlunit.javascript.HtmlUnitContextFactory.doTopCall(HtmlUnitContextFactory.java:340)
	at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.doTopCall(ScriptRuntime.java:3607)
	at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine$3.doRun(JavaScriptEngine.java:813)
	at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine$HtmlUnitContextAction.run(JavaScriptEngine.java:876)
	... 24 more
Caused by: java.lang.ArrayIndexOutOfBoundsException: Index 0 out of bounds for length 0
	at com.gargoylesoftware.htmlunit.javascript.host.css.CSSStyleDeclaration.getStyleAttribute(CSSStyleDeclaration.java:465)
	at com.gargoylesoftware.htmlunit.javascript.host.css.CSSStyleDeclaration.getPaddingLeft(CSSStyleDeclaration.java:1901)
	at com.gargoylesoftware.htmlunit.javascript.host.css.ComputedCSSStyleDeclaration.getPaddingLeft(ComputedCSSStyleDeclaration.java:837)
	at com.gargoylesoftware.htmlunit.javascript.host.css.ComputedCSSStyleDeclaration.getPaddingLeftValue(ComputedCSSStyleDeclaration.java:1696)
	at com.gargoylesoftware.htmlunit.javascript.host.css.ComputedCSSStyleDeclaration.getLeft(ComputedCSSStyleDeclaration.java:1557)
	at com.gargoylesoftware.htmlunit.javascript.host.html.HTMLElement.getOffsetLeft(HTMLElement.java:1770)
	at com.gargoylesoftware.htmlunit.javascript.host.html.HTMLElement.getPosX(HTMLElement.java:1792)
	at com.gargoylesoftware.htmlunit.javascript.host.event.MouseEvent.getScreenX(MouseEvent.java:192)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
	at net.sourceforge.htmlunit.corejs.javascript.MemberBox.invoke(MemberBox.java:188)
	... 40 more
Enclosed exception:
java.lang.RuntimeException: Exception invoking getScreenX
	at net.sourceforge.htmlunit.corejs.javascript.MemberBox.invoke(MemberBox.java:214)
	at net.sourceforge.htmlunit.corejs.javascript.ScriptableObject$GetterSlot.getValue(ScriptableObject.java:348)
	at net.sourceforge.htmlunit.corejs.javascript.ScriptableObject.get(ScriptableObject.java:475)
	at com.gargoylesoftware.htmlunit.javascript.SimpleScriptable.get(SimpleScriptable.java:79)
	at net.sourceforge.htmlunit.corejs.javascript.ScriptableObject.getProperty(ScriptableObject.java:2340)
	at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.getObjectElem(ScriptRuntime.java:1544)
	at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.getObjectElem(ScriptRuntime.java:1525)
	at net.sourceforge.htmlunit.corejs.javascript.Interpreter.doGetElem(Interpreter.java:2414)
	at net.sourceforge.htmlunit.corejs.javascript.Interpreter.interpretLoop(Interpreter.java:1461)
	at net.sourceforge.htmlunit.corejs.javascript.Interpreter.interpret(Interpreter.java:1009)
	at net.sourceforge.htmlunit.corejs.javascript.InterpretedFunction.call(InterpretedFunction.java:111)
	at net.sourceforge.htmlunit.corejs.javascript.BoundFunction.call(BoundFunction.java:53)
	at net.sourceforge.htmlunit.corejs.javascript.ContextFactory.doTopCall(ContextFactory.java:427)
	at com.gargoylesoftware.htmlunit.javascript.HtmlUnitContextFactory.doTopCall(HtmlUnitContextFactory.java:340)
	at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.doTopCall(ScriptRuntime.java:3607)
	at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine$3.doRun(JavaScriptEngine.java:813)
	at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine$HtmlUnitContextAction.run(JavaScriptEngine.java:876)
	at net.sourceforge.htmlunit.corejs.javascript.Context.call(Context.java:624)
	at net.sourceforge.htmlunit.corejs.javascript.ContextFactory.call(ContextFactory.java:537)
	at com.gargoylesoftware.htmlunit.javascript.HtmlUnitContextFactory.callSecured(HtmlUnitContextFactory.java:354)
	at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine.callFunction(JavaScriptEngine.java:820)
	at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine.callFunction(JavaScriptEngine.java:792)
	at com.gargoylesoftware.htmlunit.html.HtmlPage.executeJavaScriptFunction(HtmlPage.java:2601)
	at com.gargoylesoftware.htmlunit.html.HtmlPage.executeJavaScriptFunction(HtmlPage.java:2594)
	at com.gargoylesoftware.htmlunit.javascript.host.event.EventListenersContainer.executeEventListeners(EventListenersContainer.java:342)
	at com.gargoylesoftware.htmlunit.javascript.host.event.EventListenersContainer.executeBubblingListeners(EventListenersContainer.java:361)
	at com.gargoylesoftware.htmlunit.javascript.host.event.EventTarget.fireEvent(EventTarget.java:190)
	at com.gargoylesoftware.htmlunit.html.DomElement.lambda$fireEvent$0(DomElement.java:1463)
	at net.sourceforge.htmlunit.corejs.javascript.Context.call(Context.java:624)
	at net.sourceforge.htmlunit.corejs.javascript.ContextFactory.call(ContextFactory.java:537)
	at com.gargoylesoftware.htmlunit.javascript.HtmlUnitContextFactory.callSecured(HtmlUnitContextFactory.java:354)
	at com.gargoylesoftware.htmlunit.html.DomElement.fireEvent(DomElement.java:1463)
	at com.gargoylesoftware.htmlunit.html.DomElement.doClickFireClickEvent(DomElement.java:1131)
	at com.gargoylesoftware.htmlunit.html.DomElement.click(DomElement.java:1062)
	at com.gargoylesoftware.htmlunit.html.HtmlAnchor.click(HtmlAnchor.java:85)
	at com.gargoylesoftware.htmlunit.html.DomElement.click(DomElement.java:1002)
	at com.gargoylesoftware.htmlunit.html.DomElement.click(DomElement.java:898)
	at com.gargoylesoftware.htmlunit.html.DomElement.click(DomElement.java:879)
	at com.gargoylesoftware.htmlunit.html.DomElement.click(DomElement.java:860)
	at com.github.lucaa.tools.cloudflare.CloudflareParser.generateApis(CloudflareParser.java:56)
	at com.github.lucaa.tools.cloudflare.Main.main(Main.java:9)
Caused by: java.lang.ArrayIndexOutOfBoundsException: Index 0 out of bounds for length 0
	at com.gargoylesoftware.htmlunit.javascript.host.css.CSSStyleDeclaration.getStyleAttribute(CSSStyleDeclaration.java:465)
	at com.gargoylesoftware.htmlunit.javascript.host.css.CSSStyleDeclaration.getPaddingLeft(CSSStyleDeclaration.java:1901)
	at com.gargoylesoftware.htmlunit.javascript.host.css.ComputedCSSStyleDeclaration.getPaddingLeft(ComputedCSSStyleDeclaration.java:837)
	at com.gargoylesoftware.htmlunit.javascript.host.css.ComputedCSSStyleDeclaration.getPaddingLeftValue(ComputedCSSStyleDeclaration.java:1696)
	at com.gargoylesoftware.htmlunit.javascript.host.css.ComputedCSSStyleDeclaration.getLeft(ComputedCSSStyleDeclaration.java:1557)
	at com.gargoylesoftware.htmlunit.javascript.host.html.HTMLElement.getOffsetLeft(HTMLElement.java:1770)
	at com.gargoylesoftware.htmlunit.javascript.host.html.HTMLElement.getPosX(HTMLElement.java:1792)
	at com.gargoylesoftware.htmlunit.javascript.host.event.MouseEvent.getScreenX(MouseEvent.java:192)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
	at net.sourceforge.htmlunit.corejs.javascript.MemberBox.invoke(MemberBox.java:188)
	... 40 more
== CALLING JAVASCRIPT ==
function () {
    [native code]
}
======= EXCEPTION END ========

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