Yes there is a contentType of file type not recognized by server. The problem is, that InputFile doesn't return null if file doesn't exist. What is more UploadFile dosen't have a method to check it. So I can even get InputStream from UploadFile object with length = 0. There is no way to differ an empty file from not existing file. So I wonder if it is a bug.
-----Original Message----- From: Volker Weber [mailto:[EMAIL PROTECTED] Sent: Thursday, July 26, 2007 12:51 PM To: MyFaces Discussion Subject: Re: [Trinidad] How to check if file exists using InputFile compon ent? Hi, is there a contentType if the file does not exists? Regards, Volker 2007/7/26, Piotr Pikusa <[EMAIL PROTECTED]>: > Thank you for reply. Unfortunately your method doesn't work with > org.apache.myfaces.trinidad.model.UploadedFile object returned by InputFile. > UploadFile has a method getFilename() which returns name given by user. It > still doesn't check if file exists, so it is not a name of real file. So the > problem still isn't solved. > > -----Original Message----- > From: Volker Weber [mailto:[EMAIL PROTECTED] > Sent: Thursday, July 26, 2007 11:40 AM > To: MyFaces Discussion > Subject: Re: [Trinidad] How to check if file exists using InputFile > compon ent? > > > Hi Piotr, > > i don't know the tomahawk InputFile component, but maybe you can check > the uploaded filename? > > In tobago we check the filename to determine if a file was uploaded: > > if (file == null || file.getName().length() == 0) { > addErrorMessage(facesContext); > setValid(false); > } > > > Regards, > Volker > > > 2007/7/26, Piotr Pikusa <[EMAIL PROTECTED]>: > > In many toutorials about InputFile component (e.g on Oracle and Trinidad > > sites) there is if instruction to check if uploadFile is not null. But it > > would never be null, event if the file doesn't exist. Is it a bug in > > compoment? Is there any way to check file existence using InputFile > > component? > > > > > > -----Original Message----- > > From: Piotr Pikusa [mailto:[EMAIL PROTECTED] > > Sent: Wednesday, July 25, 2007 3:10 PM > > To: 'MyFaces Discussion' > > Subject: RE: [Trinidad] How to check if file exists using InputFile compon > > ent? > > > > > > Unfotunately not. If the existing file is empty the getLength() method > > returns 0 too. So the problem isn't still solved. > > > > > > Matthias Wessendorf wrote: > > > > hi piotr, > > > > the UploadedFile interfaces has a getLength() method > > > > it's 0, when the file isn't there.. > > > > -M > > > > On 7/25/07, Piotr Pikusa <[EMAIL PROTECTED]> wrote: > > > Hey! > > > > > > As it is mentioned in the subject I wonder if there is any possibility > to > > > check file existence. > > > I got this code on my jsp page: > > > > > > [code] > > > > > > <tr:inputFile > > > required="true" > > > rendered="true" > > > label="Load File:" > > > value="#{backingBean.file}" > > > /> > > > <af:commandButton > > > text="#{"Button"}" > > > action="#{backingBean.importFile}" /> > > > > > > [/code] > > > > > > which bind the value to the file property. The type of file is > UploadFile. > > > In backingBean I have this code: > > > > > > [code] > > > > > > UploadFile file; > > > > > > public void importFile(){ > > > if(file != null) { > > > doSomeAction(); > > > } > > > else{ > > > returnError(); > > > } > > > } > > > > > > public UploadedFile getFile() { > > > return file; > > > } > > > > > > public void setFile(UploadedFile file) { > > > this.file = file; > > > } > > > > > > [/code] > > > > > > The point of the problem is that the file is never null, no matter if > file > > > exists or not. If file doesn't exist the InputFile component doesn't > > return > > > null. The UploadFile doesn't have a method to check file existence. > > > So my question is when file property can be null. And how to check if > file > > > exists using InputFile component and UploadFile object? (I cannot use > > other > > > type, but UploadFile). > > > > > > > > > -- > > Matthias Wessendorf > > > > further stuff: > > blog: http://matthiaswessendorf.wordpress.com/ > > mail: matzew-at-apache-dot-org > > >
