Struts2PrepareTransformer.java

package com.highway2urhell.transformer;

import javassist.CtClass;
import javassist.CtMethod;

public class Struts2PrepareTransformer extends AbstractLeechTransformer {

    public Struts2PrepareTransformer() {
        super("org/apache/struts2/dispatcher/ng/filter/StrutsPrepareFilter");
        addImportPackage(Struts2Transformer.collectPackages());
    }

    @Override
    protected void doTransform(CtClass cc) throws Exception {
        CtMethod m = cc
                .getMethod("postInit",
                        "(Lorg/apache/struts2/dispatcher/Dispatcher;Ljavax/servlet/FilterConfig;)V");
        m.insertBefore(Struts2Transformer.collectBody());
    }
}