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Subject: BeanUtils problem
Date: Fri, 14 Jul 2006 18:19:36 -0400
Thread-Topic: BeanUtils problem
Thread-Index: Acank5dvV5QO6TcxQhm5por0OYTlNw==
To: <commons-user@jakarta.apache.org>
Message-Id: <20060714221958.7CDC410FB001@asf.osuosl.org>

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i have two beans:

1:=20
class Zoo {
=09
	private String firstName =3D "Zoo1";

	public String getFirstName() {
		return firstName;
	}
	public void setFirstName(String firstName) {
		this.firstName =3D firstName;
	}
}

2:=20

class Pojo {
=09
	private String firstName =3D "Pojo1";

	public String getFirstName() {
		return firstName;
	}
	public void setFirstName(String firstName) {
		this.firstName =3D firstName;
	}
}

and engine class is:

import org.apache.commons.beanutils.BeanUtils;

public class ZipcodeLookup {
=09
	public static void main(String[] args){
	=09
		Pojo p =3D new Pojo();
		Zoo z =3D new Zoo();
		try {
			BeanUtils.copyProperties(z, p);
			String ss =3D new String("ssss");
			BeanUtils.setProperty(z, "firstName", ss);
		} catch (Exception e) {
			System.out.println("ex... "+e.toString());
		}

		System.out.println("Zip: "+z.getFirstName());
		System.out.println("Pojo: "+p.getFirstName());

	}
=09
 }

when it executes this line:
BeanUtils.copyProperties(z, p);
it does noting, its not copying the properties to z,

and when it executes this line

String ss =3D new String("ssss");
BeanUtils.setProperty(z, "firstName", ss);

it dies by saying java.lang.reflect.InvocationTargetException: Cannot set f=
irstName

see log:=20
[20060714 17:46:23] DEBUG BeanUtils : BeanUtils.copyProperties(Zoo@116ab4e,=
 Pojo@148aa23)
[20060714 17:46:23] DEBUG BeanUtils :   setProperty(Zoo@116ab4e, firstName,=
 ssss)
[20060714 17:46:23] DEBUG ConvertUtils : Convert string 'ssss' to class 'ja=
va.lang.String'
[20060714 17:46:23] DEBUG ConvertUtils :   Using converter org.apache.commo=
ns.beanutils.converters.StringConverter@bb7465
ex... java.lang.reflect.InvocationTargetException: Cannot set firstName
Zip: Zoo1
Pojo: Pojo1

what is the problem, i try injecting data using reflection that works, why =
its not?


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