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java-7htmlunitkotlin

How to include HtmlUnit in a Kotlin project

I'm trying to use HtmlUnit in a Kotlin project but I get the following error when I compile:

Error:Kotlin: Supertypes of the following classes cannot be resolved. Please make sure you have the required dependencies in the classpath:
    class com.gargoylesoftware.htmlunit.html.DomElement, unresolved supertypes: ElementTraversal

This is because ElementTraversal is a java 7 feature. How can I solve this?

Solution

  • The org.w3c.dom.ElementTraversal is part of xml-apis which is a dependency of xerces:xercesImpl. The xerces:xercesImpl is in turn a dependency of htmlunit.

    Make sure to add the transitive dependencies of htmlunit to your project.

    With gradle all that is needed is:

    compile 'net.sourceforge.htmlunit:htmlunit:2.22'