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Posted to user@commons.apache.org by Tr...@VerizonWireless.com on 2006/07/15 00:19:36 UTC
BeanUtils problem
i have two beans:
1:
class Zoo {
private String firstName = "Zoo1";
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
}
2:
class Pojo {
private String firstName = "Pojo1";
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
}
and engine class is:
import org.apache.commons.beanutils.BeanUtils;
public class ZipcodeLookup {
public static void main(String[] args){
Pojo p = new Pojo();
Zoo z = new Zoo();
try {
BeanUtils.copyProperties(z, p);
String ss = 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());
}
}
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 = new String("ssss");
BeanUtils.setProperty(z, "firstName", ss);
it dies by saying java.lang.reflect.InvocationTargetException: Cannot set firstName
see log:
[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 'java.lang.String'
[20060714 17:46:23] DEBUG ConvertUtils : Using converter org.apache.commons.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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Re: BeanUtils problem
Posted by Fabian Sergio de Rosa <fd...@gmail.com>.
first try using public class Pojo, because if you don't put it the access is
protected o package. then you can try creating first a bean utils
BeanUtils util = new BeanUtils();
2006/7/14, will pugh <wi...@sourcelabs.com>:
>
> I believe the problem here may be that class Zoo and class Pojo are not
> declared public.
>
> When BeanUtils tries to find an setter that is accessible to it, it
> needs to check for a public method as well as a public class.
>
> --Will
>
> Tripurari.Sharma@VerizonWireless.com wrote:
>
> >i have two beans:
> >
> >1:
> >class Zoo {
> >
> > private String firstName = "Zoo1";
> >
> > public String getFirstName() {
> > return firstName;
> > }
> > public void setFirstName(String firstName) {
> > this.firstName = firstName;
> > }
> >}
> >
> >2:
> >
> >class Pojo {
> >
> > private String firstName = "Pojo1";
> >
> > public String getFirstName() {
> > return firstName;
> > }
> > public void setFirstName(String firstName) {
> > this.firstName = firstName;
> > }
> >}
> >
> >and engine class is:
> >
> >import org.apache.commons.beanutils.BeanUtils;
> >
> >public class ZipcodeLookup {
> >
> > public static void main(String[] args){
> >
> > Pojo p = new Pojo();
> > Zoo z = new Zoo();
> > try {
> > BeanUtils.copyProperties(z, p);
> > String ss = 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());
> >
> > }
> >
> > }
> >
> >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 = new String("ssss");
> >BeanUtils.setProperty(z, "firstName", ss);
> >
> >it dies by saying java.lang.reflect.InvocationTargetException: Cannot set
> firstName
> >
> >see log:
> >[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 '
> java.lang.String'
> >[20060714 17:46:23] DEBUG ConvertUtils : Using converter
> org.apache.commons.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?
> >
> >
> >
> >The information contained in this message and any attachment may be
> >proprietary, confidential, and privileged or subject to the work
> >product doctrine and thus protected from disclosure. If the reader
> >of this message is not the intended recipient, or an employee or
> >agent responsible for delivering this message to the intended
> >recipient, you are hereby notified that any dissemination,
> >distribution or copying of this communication is strictly prohibited.
> >If you have received this communication in error, please notify me
> >immediately by replying to this message and deleting it and all
> >copies and backups thereof. Thank you.
> >
> >
> >
> >
>
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Re: BeanUtils problem
Posted by will pugh <wi...@sourcelabs.com>.
I believe the problem here may be that class Zoo and class Pojo are not
declared public.
When BeanUtils tries to find an setter that is accessible to it, it
needs to check for a public method as well as a public class.
--Will
Tripurari.Sharma@VerizonWireless.com wrote:
>i have two beans:
>
>1:
>class Zoo {
>
> private String firstName = "Zoo1";
>
> public String getFirstName() {
> return firstName;
> }
> public void setFirstName(String firstName) {
> this.firstName = firstName;
> }
>}
>
>2:
>
>class Pojo {
>
> private String firstName = "Pojo1";
>
> public String getFirstName() {
> return firstName;
> }
> public void setFirstName(String firstName) {
> this.firstName = firstName;
> }
>}
>
>and engine class is:
>
>import org.apache.commons.beanutils.BeanUtils;
>
>public class ZipcodeLookup {
>
> public static void main(String[] args){
>
> Pojo p = new Pojo();
> Zoo z = new Zoo();
> try {
> BeanUtils.copyProperties(z, p);
> String ss = 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());
>
> }
>
> }
>
>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 = new String("ssss");
>BeanUtils.setProperty(z, "firstName", ss);
>
>it dies by saying java.lang.reflect.InvocationTargetException: Cannot set firstName
>
>see log:
>[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 'java.lang.String'
>[20060714 17:46:23] DEBUG ConvertUtils : Using converter org.apache.commons.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?
>
>
>
>The information contained in this message and any attachment may be
>proprietary, confidential, and privileged or subject to the work
>product doctrine and thus protected from disclosure. If the reader
>of this message is not the intended recipient, or an employee or
>agent responsible for delivering this message to the intended
>recipient, you are hereby notified that any dissemination,
>distribution or copying of this communication is strictly prohibited.
>If you have received this communication in error, please notify me
>immediately by replying to this message and deleting it and all
>copies and backups thereof. Thank you.
>
>
>
>
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