Hello Mayank,
That just did the trick! Thanks a lot for your response.
Thank you!!!
TS
2009/12/24 Mayank Singh <want2meetmay...@yahoo.co.in>
>
>
> In your page.jsp
>
> you have written
>
> *"<html:text property="onlyChild.name"/>"*
>
> *now you are trying to access "name" field within "onlyChild" object, which
> is null or not initialized.*
>
> To get rid of this problem, you can modify your getter method of
> "onlyChild"
> field in Father class from
>
> public Child getOnlyChild() {
> return this.onlyChild
> }
>
> to
>
> public Child getOnlyChild() {
> if(this.onlyChild == null)
> this.onlyChild = new Child(); //Initialize the object
> return this.onlyChild
> }
>
> From next time, make sure that whenever you have to access any property of
> an object within JSP, the parent object is initialized. Struts tag library
> can only take of uninitialized property if they are of primitive data type
> or wrapper classed. For eg. String, Integer, Float, Double etc...
>
> I hope this helps.
>
> Thanks.
>
> On Tue, Dec 22, 2009 at 11:22 PM, Thiago Santana
> <thiagoeca...@gmail.com<thiagoecatia%40gmail.com>
> >wrote:
>
>
> >
> >
> > Hello,
> >
> > My previous use of Struts was on a very very simple application and I was
> > able to do well with it. But now I am have a more complex model which I
> am
> > not being able to get around with as I have to build a html form whose
> > property maps to the attribute of an attribute of the ActionForm. My
> doubt
> > relies on how to access this "sub-attribute" on teh html form?
> >
> > In case this is not to clear, I have the following, very unreal scenario:
> >
> > package sample;
> >
> > import java.util.*;
> > import org.apache.actions.*;
> >
> > public class Father extends ActionForm{
> >
> > private String name;
> > private Child onlyChild;
> >
> > //....Getters and setters....//
> > }
> >
> > ---------------------------------------------------------
> >
> > package sample;
> >
> > import java.util.*;
> > import org.apache.actions.*;
> >
> > public class Child extends ActionForm{
> >
> > private String name;
> > private int age;
> >
> > //...Getters and setters...//
> > }
> >
> > ----------------------------------------------------------
> >
> > page.jsp
> >
> > (...)
> >
> > <html:form action="fatherAction">
> > Name: <html:text property="name"/><br/>
> > <b>Child details</b><br/>
> > Only child name: <html:text
> > property="onlyChild.name"/><!--????????--><br/>
> > Only child age: <html:text
> > property="onlyChild.age"/><!----????????????--->
> > </html:form>
> >
> > (...)
> >
> > ----------------------------------------------------------
> >
> > When I try it like the example above I get error as it the
> > onlyChild.whatever does not exist, does no map to a known attribute it is
> > null.... Please let me know how to achieve that... Your help is much
> > appreciated...
> >
> > Merry Xmas in advance!!!
> >
> > --
> > Thank you,
> > TS
> > +55 21 7524-9415
> >
> > [Non-text portions of this message have been removed]
> >
> >
> >
>
> --
> Mayank
>
> [Non-text portions of this message have been removed]
>
> __._,_.___
> Reply to sender <?subject=Re:+%5BJava%5D+Guidance+on+Struts+1.3> | Reply
> to
> group<java_offic...@yahoogroups.com?subject=re:+%5BJava%5D+Guidance+on+Struts+1.3>
> Messages in this
> topic<http://groups.yahoo.com/group/Java_Official/message/32292;_ylc=X3oDMTM2YmNhZWdiBF9TAzk3MzU5NzE0BGdycElkAzYzMDcxNjIEZ3Jwc3BJZAMxNzA1MDA2OTA1BG1zZ0lkAzMyMjk1BHNlYwNmdHIEc2xrA3Z0cGMEc3RpbWUDMTI2MjA0MjUxNwR0cGNJZAMzMjI5Mg-->(
> 2)
> Recent Activity:
>
> - New
> Members<http://groups.yahoo.com/group/Java_Official/members;_ylc=X3oDMTJmMDUwdTduBF9TAzk3MzU5NzE0BGdycElkAzYzMDcxNjIEZ3Jwc3BJZAMxNzA1MDA2OTA1BHNlYwN2dGwEc2xrA3ZtYnJzBHN0aW1lAzEyNjIwNDI1MTc-?o=6>
> 35
> - New
> Files<http://groups.yahoo.com/group/Java_Official/files;_ylc=X3oDMTJnaGN2YTU0BF9TAzk3MzU5NzE0BGdycElkAzYzMDcxNjIEZ3Jwc3BJZAMxNzA1MDA2OTA1BHNlYwN2dGwEc2xrA3ZmaWxlcwRzdGltZQMxMjYyMDQyNTE3>
> 2
>
> Visit Your
> Group<http://groups.yahoo.com/group/Java_Official;_ylc=X3oDMTJlNWlxYnNiBF9TAzk3MzU5NzE0BGdycElkAzYzMDcxNjIEZ3Jwc3BJZAMxNzA1MDA2OTA1BHNlYwN2dGwEc2xrA3ZnaHAEc3RpbWUDMTI2MjA0MjUxNw-->
> Start
> a New
> Topic<http://groups.yahoo.com/group/Java_Official/post;_ylc=X3oDMTJlNm9lbGs3BF9TAzk3MzU5NzE0BGdycElkAzYzMDcxNjIEZ3Jwc3BJZAMxNzA1MDA2OTA1BHNlYwNmdHIEc2xrA250cGMEc3RpbWUDMTI2MjA0MjUxNw-->
> Visit http://aiaiai.com or http://jgame.org for more groups to join.
> Java Official Group is created for the following topics: Java 2 Enterprise
> Edition - J2EE, Java 2 Standard Edition - J2SE, Java 2 Micro Edition - J2ME,
> XML, XSL, XSD, XPATH, Web Services, Jini, JXTA for all type of Java Geeks.
> Whoever posts spam / ads / job related message will be BANNED IMMEDIATELY
> MARKETPLACE
>
> Going Green: Your Yahoo! Groups resource for green
> living<http://us.ard.yahoo.com/SIG=14kt9nmkb/M=493064.13814333.13821539.13298430/D=groups/S=1705006905:MKP1/Y=YAHOO/EXP=1262049717/L=/B=EqsweEPDhFE-/J=1262042517905605/K=BGMZytxE4EK1CMEgC7551g/A=5922843/R=0/SIG=11ckn2mo6/*http://advision.webevents.yahoo.com/green/>
> ------------------------------
>
> Going Green: Your Yahoo! Groups resource for green
> living<http://us.ard.yahoo.com/SIG=14k7nrsi9/M=493064.13814537.13821737.10835568/D=groups/S=1705006905:MKP1/Y=YAHOO/EXP=1262049717/L=/B=E6sweEPDhFE-/J=1262042517905605/K=BGMZytxE4EK1CMEgC7551g/A=5922843/R=0/SIG=11ckn2mo6/*http://advision.webevents.yahoo.com/green/>
> [image: Yahoo!
> Groups]<http://groups.yahoo.com/;_ylc=X3oDMTJkbGY2ajhzBF9TAzk3MzU5NzE0BGdycElkAzYzMDcxNjIEZ3Jwc3BJZAMxNzA1MDA2OTA1BHNlYwNmdHIEc2xrA2dmcARzdGltZQMxMjYyMDQyNTE3>
> Switch to:
> Text-Only<java_official-traditio...@yahoogroups.com?subject=change+delivery+format:+Traditional>,
> Daily
> Digest<java_official-dig...@yahoogroups.com?subject=email+delivery:+Digest>•
> Unsubscribe<java_official-unsubscr...@yahoogroups.com?subject=unsubscribe>•
> Terms
> of Use <http://docs.yahoo.com/info/terms/>
> .
>
> __,_._,___
>
--
Thank you,
TS
+55 21 7524-9415
--
You received this message because you are subscribed to the Google
Groups "Java EE (J2EE) Programming with Passion!" group.
To post to this group, send email to
java-ee-j2ee-programming-with-passion@googlegroups.com
To unsubscribe from this group, send email to
java-ee-j2ee-programming-with-passion+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/java-ee-j2ee-programming-with-passion?hl=en?hl=en
