HtmlUnit ScriptException errors

Question

I am using HtmlUnitDriver,& here is my code.

   HtmlUnitDriver driver = new HtmlUnitDriver(true);
   driver.get("some url here");

I am getting following Exception:

Caused by: com.gargoylesoftware.htmlunit.ScriptException: Wrapped com.gargoylesoftware.htmlunit.ScriptException: SyntaxError: missing ; before statement (http://sales.liveperson.net/hcp/html/mTag.js?site=7824460#1(eval)#1)
    at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine$HtmlUnitContextAction.run(JavaScriptEngine.java:595)
    at net.sourceforge.htmlunit.corejs.javascript.Context.call(Context.java:537)
    at net.sourceforge.htmlunit.corejs.javascript.ContextFactory.call(ContextFactory.java:538)
    at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine.callFunction(JavaScriptEngine.java:545)
    at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine.callFunction(JavaScriptEngine.java:520)
    at com.gargoylesoftware.htmlunit.html.HtmlPage.executeJavaScriptFunctionIfPossible(HtmlPage.java:896)
    at com.gargoylesoftware.htmlunit.javascript.host.EventListenersContainer.executeEventListeners(EventListenersContainer.java:162)
    at com.gargoylesoftware.htmlunit.javascript.host.EventListenersContainer.executeBubblingListeners(EventListenersContainer.java:221)
    at com.gargoylesoftware.htmlunit.javascript.host.Node.fireEvent(Node.java:735)
    at com.gargoylesoftware.htmlunit.html.HtmlElement$2.run(HtmlElement.java:866)
    at net.sourceforge.htmlunit.corejs.javascript.Context.call(Context.java:537)
    at net.sourceforge.htmlunit.corejs.javascript.ContextFactory.call(ContextFactory.java:538)
    at com.gargoylesoftware.htmlunit.html.HtmlElement.fireEvent(HtmlElement.java:871)
    at com.gargoylesoftware.htmlunit.html.HtmlPage.executeEventHandlersIfNeeded(HtmlPage.java:1162)
    at com.gargoylesoftware.htmlunit.html.HtmlPage.initialize(HtmlPage.java:202)
    at com.gargoylesoftware.htmlunit.WebClient.loadWebResponseInto(WebClient.java:440)
    at com.gargoylesoftware.htmlunit.WebClient.getPage(WebClient.java:311)
    at com.gargoylesoftware.htmlunit.WebClient.getPage(WebClient.java:373)
    at org.openqa.selenium.htmlunit.HtmlUnitDriver.get(HtmlUnitDriver.java:346)
    ... 8 more

Please help me to sort out this issue.

Put little more code , and what actually you are putting as URL. — Sumit Singh
– Sumit Singh, Commented Oct 4, 2012 at 6:17
It's most likely the string isn't formatted correctly. It sounds like it wants a specific format and not just a URL. — Cole Tobin
– Cole Tobin, Commented Oct 4, 2012 at 6:17
Well it looks like that's complaining about the Javascript, not the Java code... what does your Javascript look like? — Jon Skeet
– Jon Skeet, Commented Oct 4, 2012 at 6:17
Can you post some more code, as exception says you have missed a semi-colon somewhere... We want to see that "Somewhere".. — Rohit Jain
– Rohit Jain, Commented Oct 4, 2012 at 6:17

Mosty Mostacho · Accepted Answer · 2012-10-08 14:58:28Z

7

Many questions are asked referencing this kind of issues. The ScriptException is raised because you have a syntactical error in your javascript. Most browsers manage to interpret the JS even with some kind of errors but HtmlUnit is a bit inflexible in that sense.

Your options are:

Correct JS code
Disable JS in the WebClient
Don't use HtmlUnit. Use a different framework with better JS support such as PhantomJS (note it is not a Java-based framework)

edited Oct 8, 2012 at 14:58

answered Oct 5, 2012 at 1:55

Mosty Mostacho

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Comments

Robert · Accepted Answer · 2014-02-06 11:11:54Z

6

_webClient.getOptions().setThrowExceptionOnScriptError(false);

works in this incorrect JS scenario.

edited Feb 6, 2014 at 11:11

Robert

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answered Feb 6, 2014 at 10:52

ƒαrнαη

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Comments

Ittiel · Accepted Answer · 2012-10-11 23:15:46Z

4

I had the same error with the liveperson mTag.js

The problem is with the compacted mTag.js response.

There are several workaround:

Replace the compacted mTag.js with a clear one (requires LivePerson support)
Work with a 'real' Selenium WebDriver (Firefox Driver or similar)

edited Oct 11, 2012 at 23:15

answered Oct 11, 2012 at 23:03

Ittiel

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