我正在做以下事情并获得奖励：
Exception in thread "main" java.lang.NoClassDefFoundError:
javassist/CannotCompileException
有谁知道为什么？
package javaapplication1;
import ma.glasnost.orika.MapperFactory;
import ma.glasnost.orika.impl.DefaultMapperFactory;
public class JavaApplication1 {
public static void main(String[] args) {
MapperFactory factory = new DefaultMapperFactory();
}
}