What does BeanUtils.populate(); do? I used BeanUtils.copyProperties(); Does it make any difference?
--- Robert Taylor <[EMAIL PROTECTED]> wrote: > Have you checked to make sure that the fields you > expect > actually exist in the form before calling > BeanUtils.populate()? > > If so, have you checked to see if the data was > copied properly > just after BeanUtils.populate()? > > BeanUtils.populate() uses reflection to copy > properties. > Are you usingproper JavaBeans naming convention? > > Try and isolate exactly where the data is getting > "lost". > > I use BeanUtils.populate() all the time with > DynaXXXXForms and > have no problems. Usually when I do, I find that my > data member > names don't correspond. > > robert > > > -----Original Message----- > > From: Caroline Jen [mailto:[EMAIL PROTECTED] > > Sent: Wednesday, January 07, 2004 1:42 PM > > To: [EMAIL PROTECTED] > > Subject: All The Bean Properties Are Null in the > Business Tier!!! (Used > > BeanUtils to Convert DynaValidatorForm) > > > > > > Hi, my program compiled OKay. When I ran the > > application, somehow, the properties of my > > DynaValidatorForm are not passed from the action > class > > to the business tier and then to the data access > tier. > > Please help me taking a look at what went wrong. > > > > > It looks that the validation worked fine: > > > > <form-bean > > name="postForm" > > > > > type="org.apache.struts.validator.DynaValidatorForm"> > > <form-property > > name="receiver" > > type="java.lang.String"/> > > <form-property > > name="sender" > > type="java.lang.String"/> > > ..... > > ..... > > </form-bean> > > because when I intentionally left several of the > text > > fields blank and submitted my JSP form, an applet > got > > prompted showing something in those fields are > > required. > > > > In my action class (see below), I used BeanUtils > to > > copy all the properties of the DynaValidatorForm > to a > > bean (ThreadBean): > > > > DynaActionForm postForm = ( DynaActionForm )form; > > ThreadBean threadBean = new ThreadBean(); > > BeanUtils.copyProperties( threadBean, postForm ); > > > > I then added a number of properties with > pre-defined > > values to the ThreadBean in the Action class: > > > > Timestamp now = DateUtil.getCurrentGMTTimestamp(); > > threadBean.setThreadCreationDate( now ); > > threadBean.setThreadViewCount( 0 ); > > > > I then called a method in a service class > > ThreadHandler and passing threadBean as the > parameter > > of that method: > > > > ThreadHandler thandler = new ThreadHandler(); > > threadID = thandler.insertThread( threadBean ); > > > > In the ThreadHandler class (see below), I first > tried > > to retrieve the values of those properties from > the > > ThreadBean. I FOUND OUT ALL THOSE VALUES ARE > NULL! > > > > class ThreadHandler extends ThreadBean > > { > > int threadID = getThreadID(); > > String receiver = getReceiver(); > > String sender = getSender(); > > Timestamp threadCreationDate = > > getThreadCreationDate(); > > int threadViewCount = getThreadViewCount(); > > > > public ThreadHandler() {} > > > > MessageDAO md = new MySQLMessageDAO(); > > > > public int insertThread( ThreadBean threadBean > ) > > throws > > MessageDAOSysException, ObjectNotFoundException > > { > > md.createThread( receiver, sender, > > threadCreationDate, > threadViewCount > > ); > > > > ..... > > ..... > > > > return threadID; > > } > > } > > > > > > > > > > > > __________________________________ > > Do you Yahoo!? > > Yahoo! Hotjobs: Enter the "Signing Bonus" > Sweepstakes > > http://hotjobs.sweepstakes.yahoo.com/signingbonus > > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: > [EMAIL PROTECTED] > > For additional commands, e-mail: > [EMAIL PROTECTED] > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: > [EMAIL PROTECTED] > For additional commands, e-mail: > [EMAIL PROTECTED] > __________________________________ Do you Yahoo!? Yahoo! Hotjobs: Enter the "Signing Bonus" Sweepstakes http://hotjobs.sweepstakes.yahoo.com/signingbonus --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
