Java bean, BeanUtils and Boolean wrapper classes

I used bean utils to manipulate Java objects created through JAXB, and I encountered an interesting problem Sometimes, JAXB creates such a Java object:

public class Bean {
    protected Boolean happy;

    public Boolean isHappy() {
        return happy;
    }

    public void setHappy(Boolean happy) {
        this.happy = happy;
    }
}

The following codes work correctly:

Bean bean = new Bean();
BeanUtils.setProperty(bean,"happy",true);

However, the property that seeks happiness is as follows:

Bean bean = new Bean();
BeanUtils.getProperty(bean,"happy");

Cause this exception:

Exception in thread "main" java.lang.NoSuchMethodException: Property 'happy' has no getter method in class 'class Bean'

Changing everything to the original Boolean allows both set and get calls to work However, I don't have this option because these are generated classes I think this is because the Java Bean library only considers a method that represents an attribute if the return type is an original Boolean value rather than a wrapper type Boolean Does anyone have any suggestions on how to access such properties through BeanUtils? Are there any solutions you can use?

Solution

Finally, I found that the law confirmed:

From JavaBeans specification Are you sure you haven't encountered a jaxb-131 error?